Rev. 0.2 / Mar. 2005 1
512Mb A-ver. DDR2 SDRAM
512Mb DDR2 SDRAM
HY5PS12421AF[P]
HY5PS12821AF[P]
HY5PS121621AF[P]
Rev. 0.2 / Mar. 2005 2
512Mb A-ver. DDR2 SDRAM
Revision History
Rev. History Draft Date
0.1 Initial version(Preliminary) release. Mar.2005
0.2 Confirmed AC parameter spec. for DDR2-800 Mar. 2005
Rev. 0.2 / Mar. 2005 3
512Mb A-ver. DDR2 SDRAM
Contents
1. Description
1.1 Device Features and Ordering Information
1.1.1 Key Feaures
1.1.2 Ordering Information
1.1.3 Ordering Frequency
1.2 Pin configuration
1.3 Pin Description
2. Maximum DC ratings
2.1 Absolute Maximum DC Ratings
2.2 Operating Temperature Condition
3. AC & DC Operating Conditions
3.1 DC Operating Conditions
5.1.1 Recommended DC Operating Conditions(S STL_1.8)
5.1.2 ODT DC Electrical Characteristics
3.2 DC & AC Logic Input Levels
3.2.1 Input DC Lo gic Level
3.2.2 Input AC Logic Level
3.2.3 AC Input Test Conditions
3.2.4 Differential Input AC Logic Level
3.2.5 Differential AC output parameters
3.3 Output Buffer Levels
3.3.1 Output AC Test Conditions
3.3.2 Output DC Current Drive
3.3.3 OCD default chracteristics
3.4 IDD Specifications & Measurement Conditions
3.5 Input/Output Capacit ance
4. AC Timing Specifications
5. Package Dimensions
Rev. 0.2 / Mar. 2005 4
512Mb A-ver. DDR2 SDRAM
1. Description
1.1 Device Features & Ordering Information
1.1.1 Key Features
VDD ,VDDQ =1.8 +/- 0.1V
All inputs and outputs are compatible with SSTL_18 interface
Fully differential clock inputs (CK, /CK) operation
Double data rate interface
Source synchronous-data transaction aligned to bidirectional data strobe (DQS, DQS)
Differential Data Strobe ( D QS, DQS)
Data outputs on DQS, DQS edges when read (edged DQ)
Data inputs on DQS centers when write(centered DQ)
On chip DLL align DQ, DQS and DQS transition with CK transition
DM mask write data-in at the both rising and falling edges of the data strobe
All addresses and control inputs except data, data strobes and data masks latched on the rising edges of the clock
Programmable CAS latency 3, 4, 5 and 6 supported
Programmable additive latency 0, 1, 2, 3, 4 and 5 supported
Programmable burst length 4/8 with both nibble sequential and interleave mode
Internal four bank operations with single pulsed RAS
Auto refresh and self refresh supported
tRAS lockout supported
8K refresh cycles /64ms
JEDEC standard 60ball FBGA(x4/x8) & 84ball FBGA(x16)
Full strength driver option controlled by EMRS
On Die Termin ation supporte d
Off Chip Driver Impedance Adjustment supported
Read Data Strobe suupported (x8 only)
Self-Refresh High Temperature Entry
Preliminary
Ordering Information
Part No. Organization Package
HY5PS12421AF-X** 128Mx4
LeadedHY5PS12821AF-X** 64Mx8
HY5PS121621AF-X* 32Mx16
HY5PS12421AFP-X* 128Mx4
Lead free**HY5PS12821AFP-X* 64Mx8
HY5PS121621AFP-X* 32Mx16
Note:
1. -X* is the speed bin, refer to the Operation Fre quency
table for complete Part No.
2. Hynix Lead-free products are compliant to RoHS.
Operating Frequency
Speed Bin tCK(ns) CL tRCD tRP Unit
E3 5333
Clk
C3 3.75 3 3 3 Clk
C4 3.75 4 4 4 Clk
Y4 3444
Clk
Y5 3555
Clk
S5 2.5 5 5 5 Clk
S6 2.5 6 6 6 Clk
Rev. 0.2 / Mar. 2005 5
512Mb A-ver. DDR2 SDRAM
1.2 Pin Configuration & Address Table
128Mx4 DDR2 Pin Configuration(Top view: see balls through package)
3
VSS
DM
VDDQ
DQ3
VSS
WE
BA1
A1
A5
A9
NC
2
NC
VSSQ
DQ1
VSSQ
VREF
CKE
BA0
A10
A3
A7
A12
1
VDD
NC
VDDQ
NC
VDDL
NC
VSS
VDD
A
B
C
D
E
F
G
H
J
K
L
7
VSSQ
DQS
VDDQ
DQ2
VSSDL
RAS
CAS
A2
A6
A11
NC
8
DQS
VSSQ
DQ0
VSSQ
CK
CK
CS
A0
A4
A8
A13
9
VDDQ
NC
VDDQ
NC
VDD
ODT
VDD
VSS
ROW AND COLUMN ADDRESS TABLE
ITEMS 128Mx4
# of Bank 4
Bank Address BA0, BA1
Auto Precharge Flag A10/AP
Row Address A0 - A13
Column Address A0-A9, A11
Page size 1 KB
Rev. 0.2 / Mar. 2005 6
512Mb A-ver. DDR2 SDRAM
64Mx8 DDR2 PIN CONFIGURATION(Top view: see balls through package)
3
VSS
DM, RDQS
VDDQ
DQ3
VSS
WE
BA1
A1
A5
A9
NC
2
NU, RDQS
VSSQ
DQ1
VSSQ
VREF
CKE
BA0
A10
A3
A7
A12
1
VDD
DQ6
VDDQ
DQ4
VDDL
NC
VSS
VDD
A
B
C
D
E
F
G
H
J
K
L
7
VSSQ
DQS
VDDQ
DQ2
VSSDL
RAS
CAS
A2
A6
A11
NC
8
DQS
VSSQ
DQ0
VSSQ
CK
CK
CS
A0
A4
A8
A13
9
VDDQ
DQ7
VDDQ
DQ5
VDD
ODT
VDD
VSS
ROW AND COLUMN ADDRESS TABLE
ITEMS 64Mx8
# of Bank 4
Bank Address BA0, BA1
Auto Precharge Flag A10/AP
Row Address A0 - A13
Column Address A0-A9
Page size 1 KB
Rev. 0.2 / Mar. 2005 7
512Mb A-ver. DDR2 SDRAM
32Mx16 DDR2 PIN CONFIGURATION(Top view: see balls through package)
3
VSS
UDM
VDDQ
DQ11
VSS
WE
BA1
A1
A5
A9
NC
2
NC
VSSQ
DQ9
VSSQ
VREF
CKE
BA0
A10
A3
A7
A12
1
VDD
DQ14
VDDQ
DQ12
VDDL
NC
VSS
VDD
A
B
C
D
J
K
L
M
N
P
R
7
VSSQ
UDQS
VDDQ
DQ10
VSSDL
RAS
CAS
A2
A6
A11
NC
8
UDQS
VSSQ
DQ8
VSSQ
CK
CK
CS
A0
A4
A8
NC
9
VDDQ
DQ15
VDDQ
DQ13
VDD
ODT
VDD
VSS
VSS
LDM
VDDQ
DQ3
NC
VSSQ
DQ1
VSSQ
VDD
DQ6
VDDQ
DQ4
E
F
G
H
VSSQ
LDQS
VDDQ
DQ2
LDQS
VSSQ
DQ0
VSSQ
VDDQ
DQ7
VDDQ
DQ5
ROW AND COLUMN ADDRESS TABLE
ITEMS 32Mx16
# of Bank 4
Bank Address BA0, BA1
Auto Precharge Flag A10/AP
Row Address A0 - A12
Column Address A0-A9
Page size 2 KB
Rev. 0.2 / Mar. 2005 8
512Mb A-ver. DDR2 SDRAM
1.3 PIN DESCRIPTION
PIN TYPE DESCRIPTION
CK, CK Input Clock: CK and CK are differential clock inputs. All address and control input signals are samp led
on the crossing of the positive edge of CK and negative edge of CK. Output (read) data is refer-
enced to the crossings of CK and CK (both directions of cro ssing).
CKE Input
Clock Enable: CKE HIGH activates, and CKE LOW deactivates internal clock signals, and device
input buffers and output drivers. Taking CKE LOW provides PRECHARGE POWER DOWN and
SELF REFRESH operation (all banks idle), or ACTIVE POWER DOWN (row ACTIVE in any bank).
CKE is synchronous for POWER DOWN entry and exit, and for SELF REFRESH entry. CKE is asyn-
chronous for SELF REFRESH exit. After VREF has become stable during the power on and initial-
ization sequence, it m ust be maintained for proper operation of the CK E rec eiver. For proper
self-ref resh entry and exit, VREF must be maintained to this input. CKE must be maintained hi gh
throughout RE AD and WRITE accesses. Input bu ffers, excluding CK, CK and CKE are disabled
during POWER DOWN. Input buffers, excluding CKE are disabled during SELF REFRESH.
CS Input Chip Select : All commands are masked when CS is registered HIGH. CS provides for external
bank selection on systems with multiple banks. CS is considered part of the command code.
ODT Input
On Die Termination Control : ODT(registered HIGH) enables on die termination resistanc e int er-
nal to the DDR2 SDRAM. When enabled, ODT is only applied t o DQ, DQS, DQS, RDQS, RDQS ,
and DM signal for x4,x 8 configurations. Fo r x16 con figur at ion ODT is applied to each DQ, UDQS/
UDQS.LDQS/LDQS, UDM and LDM signal. The ODT pin will be ignored if the Extended Mode
Register(EMRS(1)) is programmed to disable ODT.
RAS, CAS, WE Input Command Inputs: RAS, CAS and WE (along with CS) define the command being entered.
DM
(LDM, UDM) Input
Input Data Mask : DM is an input mask signal for write data. Input Data is masked when DM is
sampled High coincident with that input data during a WRITE access. DM is sampled on both
edges of DQS, Although DM pins are input only, the DM loading matches the DQ and DQS load-
ing. For x8 device, the function of DM or RDQS/ RDQS is enabled by EMRS command.
BA0 - BA2 Input
Bank Address Inputs: BA0 - BA2 define to which bank an ACTIVE, Read, Write or PRECHARGE
command is being applie d(For 256Mb and 512Mb, BA2 is not ap plied). Bank address also deter-
mines if the mode register or extended mode register is to be accessed during a MRS or EMRS
cycle.
A0 -A15 Input
Address Inputs: Provide the row address for ACTIVE commands, and the column address and
AUTO PRECHARGE bit for READ/WRITE commands to select one location out of the memory
array in the respective bank. A10 is sampled during a precharge command to determine
whether the PRECHARGE applies to one bank (A10 LOW) or all banks (A10 HIGH). If only one
bank is to be precharg ed, the bank is select ed by BA0- BA2. The addres s inputs also pr ovide the
op code during MODE REGISTER SET commands.
DQ Input/
Output Data inpu t / outpu t : Bi-dir ectional data bus
DQS, (DQS)
(UDQS),(UDQS)
(LDQS),(LDQS)
(RDQS),(RDQS)
Input/
Output
Data Strobe : Output with read data, input with write data. Edge alig ned with read data, cen-
tered in write data. For the x16, LDQS correspond to the data on DQ0~DQ7; UDQS corresponds
to the data on DQ8~ DQ15. For the x8, an RDQS option us ing DM pin can be enabled via the
EMRS(1) to simplify read timing. The data strobes DQS, LDQS, UDQS, and RDQS may be used in
single ended mode or paired with optional complementary signals DQS, LDQS ,UDQS and RDQS
to provide dif ferential pair signaling to the system during both reads and wirtes. An EMRS(1)
control bit enables or disables all complementary data strobe signals.
In this data sheet, "differential DQS signals" refers to any of the following with A10 = 0 of
EMRS(1)
x4 DQS/DQS
x8 DQS/DQS if EMRS(1)[A11] = 0
x8 DQS/DQS, RDQS/RDQS, if EMRS(1)[A11] = 1
x16 LDQS/LDQS and UDQS/UDQS
"single-ended DQS signals" refers to any of the following with A10 = 1 of
EMRS(1)
x4 DQS
x8 DQS if EMRS(1)[A11] = 0
x8 DQS, RDQS, if EMRS(1)[A11] = 1
x16 LDQS and UDQS
Rev. 0.2 / Mar. 2005 9
512Mb A-ver. DDR2 SDRAM
PIN TYPE DESCRIPTION
NC No Connect : No internal electrical connection is present.
VDDQ Supply DQ Power Supply: 1.8V +/- 0.1V (Exclusively, 1.9V +/- 0.1V for C3 speed grade part)
VSSQ Supply DQ Ground
VDDL Supply DLL Power Supply : 1.8V +/- 0.1V (Exclusively, 1.9V +/- 0.1V for C3 speed grade part)
VSSDL Supply DLL Ground
VDD Supply Power Supply : 1.8V +/- 0.1V (Exclusively, 1.9V +/- 0.1V for C3 speed grade part)
VSS Supply Ground
VREF Supply Reference voltage for inputs for SSTL interface.
-Continue-
Rev. 0.2 / Mar. 2005 10
512Mb A-ver. DDR2 SDRAM
2. Maximum DC Ratings
2.1 Absolute Maximum DC Ratings
2.2 Operating Temperature Condition
Symbol Parameter Rating Units Notes
VDD Voltage on VDD pin relative to Vss - 1.0 V ~ 2.3 V V 1
VDDQ Voltage on VDDQ pin relative to Vss - 0.5 V ~ 2.3 V V 1
VDDL Voltage on VDDL pin relative to Vss - 0.5 V ~ 2.3 V V 1
VIN, VOUT Voltage on any pin relative to Vss - 0.5 V ~ 2.3 V V 1
TSTG Storage Temperature -55 to +100 °C 1, 2
1. Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a
stress rating only and functional operation of the device at these or any other conditions above those indicated in the opera-
tional sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may
affect reliability.
2. Storage Temperature is the case surface temperature on the denter/top side of the DRAM. For the measurement conditions.
Please refer to JESD51-2 standard.
Symbol Parameter Rating Units Notes
tOPER Operating Temperature 0 to 95 °C 1,2
1. Operating Temperature is the case surface temperature on the center/top side of the DRAM. For the measurement conditions,
please refer to JESD51-2 standard.
2. At tOPER 85~95℃, Double refresh rate(tREFI: 3.9us) is required, and to enter the self refresh mode at this temperature range
it must be reguired an EMRS command to change iself refresh rate.
Rev. 0.2 / Mar. 2005 11
512Mb A-ver. DDR2 SDRAM
3. AC & DC Operating Conditons
3.1 DC Operating Conditions
3.1.1 Recommended DC Operating Conditions (SSTL_1.8)
3.1.2 ODT DC electrical characteristics
Symbol Parameter Rating Units Notes
Min. Typ. Max.
VDD Supply Voltage 1.7 1.8 1.9 V 1
VDDL Supply Voltage for DLL 1.7 1.8 1.9 V 1,2
VDDQ Supply Voltage for Output 1.7 1.8 1.9 V 1,2
VREF Input Reference Voltage 0.49*VDDQ 0.50*VDDQ 0.51*VDDQ mV 3,4
VTT Termination Voltage VREF-0.04 VREF VREF+0.04 V 5
1. Min. Typ. and Max. values increase by 100mV for C3(DDR2-533 3-3-3) speed option.
2. VDDQ tracks with VDD,VDDL tracks with VDD. AC parameters are measured with VDD,VDDQ and VDD.
3. The value of VREF may be selected by the user to provide optimum noise margin in the system. Typically the value of VREF is
expected to be about 0.5 x VDDQ of the transmitting device and VREF is expected to track variations in VDDQ
4. Peak to peak ac noise on VREF may not exceed +/-2% VREF (dc).
5. VTT of transmitting device must track VREF of receiving device.
PARAMETER/CONDITION SYMBOL MIN NOM MAX UNITS NOTES
Rtt effective impedance value for EMRS(A6,A2)=0,1; 75 ohm Rtt1(eff) 60 75 90 ohm 1
Rtt effective impedance value for EMRS(A6,A2)=1,0; 150 ohm Rtt2(eff) 120 150 180 ohm 1
Rtt effective impedance value for EMRS(A6,A2)=1,1; 50 ohm Rtt3(eff) 40 50 60 ohm 1,2
Deviation of VM with respect to VDDQ/2 delta VM -6 +6 % 1
Note
1. Test condition for Rtt measurements
2. Optional for DDR2-400/533/667/800
Measurement Definition for Rtt(eff): Apply VIH (ac) and VIL (ac) to test pin separately, then measure current I(VIH (ac)) and
I(VIL(ac)) respectively. VIH (ac), VIL (ac), and VDDQ values defined in SSTL_18
Measurement Definition for VM : Measurement Voltage at test pin( mid point) with no load.
Rtt(eff) = VIH (ac) - VIL (ac)
I(VIH (ac)) - I(VIL (ac))
delta VM = 2 x Vm
VDDQ x 100%
- 1
Rev. 0.2 / Mar. 2005 12
512Mb A-ver. DDR2 SDRAM
3.2 DC & AC Logic Input Levels
3.2.1 Input DC Logic Level
3.2.2 Input AC Logic Level
3.2.3 AC Input Test Conditions
Note:
1. Input waveform timing is referenced to the input signal crossing through the VREF level applied to the device
under test.
2. The input signal minimum slew rate is to be maintained over the range from VREF to VIH(ac) min for rising
edges and the range from VREF to VIL(ac) max for falling edges as shown in the below figure.
3. AC timings are referenced with input waveforms switching from VIL(ac) to VIH(ac) on the positive transitions
and VIH(ac) to VIL(ac) on the negative transitions.
Symbol Parameter Min. Max. Units Notes
VIH(dc) dc input logic high VREF + 0.125 VDDQ + 0.3 V
VIL(dc) dc input logic low - 0.3 VREF - 0.125 V
Symbol Parameter DDR2 400,533 DDR2 667,800 Units Notes
Min. Max. Min. Max.
VIH (ac) ac input logic high VREF + 0.250 - VREF + 0.200 - V
VIL (ac) ac input logic low - VREF - 0.250 - VREF - 0.200 V
Symbol Condition Value Units Notes
VREF Input reference voltage 0.5 * VDDQ V1
VSWING(MAX) Input signal maximum peak to peak swing 1.0 V 1
SLEW Input signal minimum slew rate 1.0 V/ns 2, 3
VDDQ
VIH(ac) min
VREF
VSWING(MAX)
delta TRdelta TF
VIH(dc) min
VIL(dc) max
VIL(ac) max
VSS
Rising Slew = delta TR
VIH(ac) min - VREF
VREF - VIL(ac) max
delta TF
Falling Slew =
< Figure : AC Input Test Signal Waveform>
Rev. 0.2 / Mar. 2005 13
512Mb A-ver. DDR2 SDRAM
3.2.4 Differential Input AC logic Level
3.2.5 Differential AC output parameters
Symbol Parameter Min. Max. Units Notes
VID (ac) ac differential input voltage 0.5 VDDQ + 0.6 V 1
VIX (ac) ac differential cross point voltage 0.5 * VDDQ - 0.175 0.5 * VDDQ + 0.175 V 2
1. VIN(DC) specifies the allow able DC execution of each input of differential pair such as CK, CK, DQS, DQS, LDQS, LDQS, UDQS
and UDQS.
2. VID(DC) specifies the input differential voltage |VTR -VCP | required for switching, where VTR is the true input (such as CK,
DQS, LDQS or UDQS) lev el and VCP is the complement ary input (such as CK , DQS, LDQS or UDQS) level. The minimum value
is equal to VIH(DC) - V IL(DC).
Note:
1. VID(AC) specifies the input differential voltage |VTR -VCP | required for switchin g, where VT R is the true input signal (suc h as
CK, DQS, LDQS or UDQS) and VCP is the complement ary input signal (s uch as CK, DQS , LDQS or UDQS). The minimum v alue
is equal to V IH(AC) - V IL(AC).
2. The typical v alue of VIX(AC) is expected to be about 0.5 * VDDQ of the transmitting device and VIX(AC) is expected to track
variations in VDDQ . VIX(AC) indicates the voltage at which differential input signals must cross.
Symbol Parameter Min. Max. Units Notes
VOX (ac) ac differential cross point voltage 0.5 * VDDQ - 0.125 0.5 * VDDQ + 0.125 V 1
Note:
1. The typical value of VOX(AC) is expected to be about 0.5 * V DDQ of the transmitting device and VOX(AC) is expected to track
variations in VDDQ . VOX(AC) indicates the voltage at whitch differential output signals must cross.
VDDQ
Crossing point
VSSQ
VTR
VCP
VID VIX or VOX
< Differential signal levels >
Rev. 0.2 / Mar. 2005 14
512Mb A-ver. DDR2 SDRAM
3.3 Output Buffer Characteristics
3.3.1 Output AC Test Conditions
3.3.2 Output DC Current Drive
Symbol Parameter SSTL_18 Class II Units Notes
VOTR Output Timing Measurement Reference Level 0.5 * VDDQ V1
1. The VDDQ of the device under test is referenced.
Symbol Parameter SSTl_18 Units Notes
IOH(dc) Output Minimum Source DC Current - 13.4 mA 1, 3, 4
IOL(dc) Output Minimum Sink DC Current 13.4 mA 2, 3, 4
1. VDDQ = 1.7 V; VOUT = 1420 mV. (VOUT - VDDQ)/IOH must be less than 21 ohm for values of VOUT between VDDQ and VDDQ -
280 mV.
2. VDDQ = 1.7 V; VOUT = 280 mV. VOUT/IOL must be less than 21 ohm for values of VOUT between 0 V and 280 mV.
3. The dc value of VREF applied to the receiving device is set to VTT
4. The values of IOH(dc) and IOL(dc) are based on the conditions given in Notes 1 and 2. They are used to test device drive
current capability to ensure VIH min plus a noise margin and VIL max minus a noise margin are delive red to an SSTL_18
receiver. The actual current values are derived by shifting the desired driver operating point (see Section 3.3) along a 21 ohm
load line to define a convenient driver current for measurement.
Rev. 0.2 / Mar. 2005 15
512Mb A-ver. DDR2 SDRAM
3.3.3 OCD defalut characteristics
Description Parameter Min Nom Max Unit Notes
Output impedance - - - ohms 1
Output impedance step size for OCD calibra-
tion 0 1.5 ohms 6
Pull-up and pull-down mismatch 0 4 ohms 1,2,3
Output slew rate Sout 1.5 - 5 V/ns 1,4,5,6,7,8
Note
1. Absolute Specifications ( Toper; VDD = +1.8V ±0.1V, VDDQ = +1.8V ±0.1V)
2. Impedance measurement condition for output source dc current: VDDQ=1.7V; VOUT=1420mV; (VOUT-VDDQ)/Ioh must be
less than 23.4 ohms for values of VOUT between VDDQ and VDDQ-280mV. Impedance measurement condition for output sink
dc current: VDDQ = 1.7V; VOUT = 280mV; VOUT/Iol must be less than 23.4 ohms for values of VOUT between 0V and 280mV.
3. Mismatch is absolute value between pull-up and pull-dn, both are measured at same temperature and voltage.
4. Slew rate measured from vil(ac) to vih(ac).
5. The absolute value of the slew rate as measured from DC to DC is equal to or greater than the slew rate as measured from AC
to AC. This is guaranteed by design and characterization.
6. This represents the step size when the OCD is near 18 ohms at nominal conditions across all process corners/variations and
represents only the DRAM uncertainty. A 0 ohm value(no calibration) can only be achieved if the OCD impedance is 18 ohms
+/- 0.75 ohms under nominal conditions.
Output Slew rate load:
7. DRAM output slew rate specification applies to 400 , 533 and 667 MT/s speed bins.
8. Timing skew due to DRAM output slew rate mis-match between DQS / DQS and associated DQs is included in tDQSQ and
tQHS specification.
VTT
25 ohms
Output
(Vout) Reference
point
Rev. 0.2 / Mar. 2005 16
512Mb A-ver. DDR2 SDRAM
3.4 IDD Specifications & Test Conditions
IDD Specifications(max)_tbd
Symbol DDR2 667 DDR2 533(C4) DDR2 533(C3) DDR2 400 Units
x4/8 x16 x4/8 x16 x4/8 x16 x4/8 x16
IDD0 mA
IDD1 mA
IDD2P mA
IDD2Q mA
IDD2N mA
IDD3P FmA
SmA
IDD3N mA
IDD4W mA
IDD4R mA
IDD5B mA
IDD6
Normal mA
Low
power mA
IDD7 mA
Rev. 0.2 / Mar. 2005 17
512Mb A-ver. DDR2 SDRAM
IDD Test Conditions
(IDD values are for full operating range of Voltage and Temperature, Notes 1-5)
Symbol Conditions Units
IDD0 Operating one bank active-precharge current; tCK = tCK(IDD), tRC = tRC(IDD), tRAS = tRAS min(IDD) ;
CKE is HIGH, CS is HIGH between valid commands;Address bus inputs are SWITCHING;Data bus inputs
are SWITCHING mA
IDD1 Operating one bank active-read-precharge curren ; IOUT = 0mA;BL = 4, CL = CL(IDD), AL = 0;
tCK = tCK(IDD), tRC = tRC (IDD), tRAS = tRASmin(IDD), tRCD = tRCD(IDD) ; CKE is HIGH, CS is HIGH
between valid commands ; Address bus inputs are SWITCHING ; Data pattern is same as IDD4W mA
IDD2P Precharge power-down current ; All banks idle ; tCK = tCK(IDD) ; CKE is LOW ; Other control and
address bus inputs are STABLE; Data bus inputs are FLOATING mA
IDD2Q Precharge quiet standby current;All banks idle; tCK = tCK(IDD);CKE is HIGH, CS is HIGH; Other control
and address bus inputs are STABLE; Data bus inputs are FLOATING mA
IDD2N Precharge standby current; All banks idle; tCK = tCK(IDD); CKE is HIGH, CS is HIGH; Other control and
address bus inputs are SWITCHING; Data bus inputs are SWITCHING mA
IDD3P Active power-down current; All banks open; tCK = tCK(IDD); CKE is
LOW; Other control and address bus inputs are STABLE; Data bus
inputs are FLOATING
Fast PDN Exit MRS(12) = 0 mA
Slow PDN Exit MRS(12) = 1 mA
IDD3N Active standby current; All banks open; tCK = tCK(IDD), tRAS = tRASmax(IDD), tRP =tRP(IDD); CKE is
HIGH, CS is HIGH between valid commands; Other control and address bus inputs are SWITCHING; Data
bus inputs are SWITCHING mA
IDD4W Operating burst write current; All banks open, Continuous burst writes; BL = 4, CL = CL(IDD), AL = 0; tCK
= tCK(IDD), tRAS = tRASmax(IDD), tRP = tRP(IDD); CKE is HIGH, CS is HIGH between valid commands;
Address bus inputs are SWITCHING; Data bus inputs are SWITCHING mA
IDD4R Operating burst read current; All banks open, Continuous burst reads, IOUT = 0mA; BL = 4, CL =
CL(IDD), AL = 0; tCK = tCK(IDD), tRAS = tRASmax(IDD), tRP = tRP(IDD); CKE is HIGH, CS is HIGH
between valid commands; Address bus inputs are SWITCHING;; Data pattern is same as IDD4W mA
IDD5B Burst refresh current; tCK = tCK(IDD); Refresh command at every tRFC(IDD) interval; CKE is HIGH, CS is
HIGH between valid commands; Other control and address bus inputs are SWITCHING; Data bus inputs
are SWITCHING mA
IDD6 Self refresh current; CK and CK at 0V; CKE 0.2V; Other control and address bus inputs are FLOATING;
Data bus inputs are FLOATING mA
IDD7
Operating bank interleave read current; All bank interleaving reads, IOUT = 0mA; BL = 4, CL = CL(IDD),
AL = tRCD(IDD)-1*tCK(IDD); tCK = tCK(IDD), tRC = tRC(IDD), tRRD = tRRD(IDD), tRCD = 1*tCK(IDD);
CKE is HIGH, CS is HIGH between valid commands; Address bus inputs are STABLE during DESELECTs;
Data pattern is same as IDD4R; - Refer to the following page for detailed timing conditions
mA
Note:
1. VDDQ = 1.8 +/- 0.1V ; VDD = 1.8 +/- 0.1V (exclusively VDDQ = 1.9 +/- 0.1V ; VDD = 1.9 +/- 0.1V for C3 speed grade)
2. IDD specifications are tested after the device is properly initialized
3. Input slew rate is specified by AC Parametric Test Condition
4. IDD parameters are specified with ODT disabled.
5. Data bus consists of DQ, DM, DQS, DQS, RDQS, RDQS, LDQS, LDQS, UDQS, and UDQS. IDD values must be met with all
combinations of EMRS bits 10 and 11.
6. Definitions for IDD
LOW is defined as Vin VILAC(max)
HIGH is defined as Vin VIHAC(min)
STABLE is defined as inputs stable at a HIGH or LOW level
FLOATING is defined as inputs at VREF = VDDQ/2
SWITCHING is defined as: inputs changing between HIGH and LOW every other clock cycle (once per two clocks) for
address and control signals, and inputs changing between HIGH and LOW every other data transfer (once per clock) for DQ
signals not including masks or strobes.
Rev. 0.2 / Mar. 2005 18
512Mb A-ver. DDR2 SDRAM
For purposes of IDD testing, the following parameters are to be utilized
Detailed IDD7
The detailed timings are shown below for IDD7. Changes will be required if timing parameter changes are made to the specification.
Legend: A = Active; RA = Read with Autoprecharge; D = Deselect
IDD7: Operating Current: All Bank Interleave Read operation
All banks are being interlea ved at minimum tRC(I DD) without violating tRRD(IDD) using a burst length of 4. Control and address bus
inputs are ST ABLE during DESELECTs. IOUT = 0mA
Timing Patterns for 4 bank devices x4/ x8/ x16
-DDR2-400 3/3/3: A0 RA0 A1 RA1 A2 RA2 A3 RA3 D D D (11 clocks)
-DDR2-533 3/3/3: A0 RA0 D A1 RA1 D A2 RA2 D A3 RA3 D D D D (15 clocks)
-DDR2-533 4/4/4: A0 RA0 D A1 RA1 D A2 RA2 D A3 RA3 D D D D D (16 clocks)
-DDR2-667 4/4/4: A0 RA0 D D A1 RA1 D D A2 RA2 D D A3 RA3 D D D D D (19 clocks)
-DDR2-667 5/5/5: A0 RA0 D D A1 RA1 D D A2 RA2 D D A3 RA3 D D D D D D (20 clocks)
Speed
Bin
(CL-tRCD-tRP)
DDR2-800 DDR2-667 DDR2-533 DDR2-400 Units
5-5-5 6-6-6 4-4-4 5-5-5 3-3-3 4-4-4 3-3-3
CL(IDD) 5645 3 4 3 tCK
tRCD(IDD) 12.5 15 12 15 11.25 15 15 ns
tRC(IDD) 57.25 60 57 60 56.25 60 55 ns
tRRD(IDD)-x4/x8 7.5 7.5 7.5 7.5 7.5 7.5 7.5 ns
tRRD(IDD)-x16 10 10 10 10 10 10 10 ns
tCK(IDD) 2.5 2.5 3 3 3.75 3.75 5 ns
tRASmin(IDD) 45 45 45 45 45 45 40 ns
tRASmax(IDD) 70000 70000 70000 70000 70000 70000 70000 ns
tRP(IDD) 12.5 15 12 15 11.25 15 15 ns
tRFC(IDD)-256Mb 75 75 75 75 75 75 75 ns
tRFC(IDD)-512Mb 105 105 105 105 105 105 105 ns
tRFC(IDD)-1Gb 127.5 127.5 127.5 127.5 127.5 127.5 127.5 ns
Rev. 0.2 / Mar. 2005 19
512Mb A-ver. DDR2 SDRAM
3.5. Input/Output Capacitance
4. Electrical Characteristics & AC Timing Specification
( 0 TCASE 95℃; VDDQ = 1.8 V +/- 0.1V; VDD = 1.8V +/- 0.1V)
Refresh Parameters by Device Density
DDR2 SDRAM speed bins and tRCD, tRP and tRC for corresponding bin
Parameter Symbol
DDR2- 400
DDR2- 533 DDR2 667 DDR2 800 Units
Min Max Min Max Min Max
Input capacitanc e, CK and CK CCK 1.0 2.0 1.0 2.0 1.0 2.0 pF
Input capacitance delta, CK and CK CDCK x0.25 x0.25 x0.25 pF
Input capacitanc e, all other input-only pins CI 1.0 2.0 1.0 2.0 1.0 1.75 pF
Input capacitance delta, all other input-only pins CDI x0.25 x0.25 x0.25 pF
Input/output capacitance, DQ, DM, DQS, DQS CIO 2.5 4.0 2.5 3.5 2.5 3.5 pF
Input/output capacitance delta, DQ, DM, DQS,
DQS CDIO x0.5 x0.5 x0.5 pF
Parameter Symbol 256Mb 512Mb 1Gb 2Gb 4Gb Units
Refresh to Active/Refresh command time tRFC 75 105 127.5 195 327.5 ns
Average periodic refresh interval tREFI 0 ℃≤ TCASE 85℃ 7.8 7.8 7.8 7.8 7.8 ns
85< TCASE ≤95 3.9 3.9 3.9 3.9 3.9 ns
Speed DDR2-800 DDR2-800 DDR2-667 DDR2-667 DDR2-533 DDR2-533 DDR2-400 Units
Bin(CL-tRCD-tRP) 5-5-5 6-6-6 4-4-4 5-5-5 4-4-4 3-3-3 3-3-3
Parameter min min min min min min min
CAS Latency 564 5 4 3 5tCK
tRCD 12.5 15 12 15 15 11.25 15 ns
tRP 12.5 15 12 15 15 11.25 15 ns
tRAS 45 45 45 45 45 45 40 ns
tRC 57.25 60 57 60 60 56.25 55 ns
Rev. 0.2 / Mar. 2005 20
512Mb A-ver. DDR2 SDRAM
Timing Parameters by Speed Grade
(Refer to notes for information related to this table at the following pages of this table)
Parameter Symbol DDR2-533 DDR2-400 Unit Note
min max min max
DQ output access time from CK/CK tAC -500 +500 -600 +600 ps
DQS output access time from CK/CK tDQSCK -450 +450 -500 +500 ps
CK high-level width tCH 0.45 0.55 0.45 0.55 tCK
CK low-level width tCL 0.45 0.55 0.45 0.55 tCK
CK half period tHP min(tCL,tCH) -min(tCL,tCH) -ps 11,12
Clock cycle time, CL=x tCK 3750 8000 5000 8000 ps 15
DQ and DM input setup time(differential strobe) tDS(base) 100 -150-ps 6,7,8,
20
DQ and DM input hold time(differential strobe) tDH(base) 225 -275-ps 6,7,8,
21
DQ and DM input setup time(single ended strobe) tDS -25 -25-ps 6,7,8,
20
DQ and DM input hold time(single ended strobe) tDH -25 -25-ps 6,7,8,
21
Control & Addr es s input p ulse widt h f or ea ch i nput tIPW 0.6 -0.6-tCK
DQ and DM input pulse width for each input tDIPW 0.35 -0.35-tCK
Data-out high-impedance time from CK/CK tHZ - tAC max - tAC max ps 18
DQS low-impedance time from CK/CK tLZ(DQS) tAC min tAC max tAC min tAC max ps 18
DQ low-impedance time from CK/CK tLZ(DQ) 2*tAC min tAC max 2*tAC min tAC max ps 18
DQS-DQ skew for DQS and associated DQ signals tDQSQ -300-350ps 13
DQ hold skew factor tQHS -400-450ps 12
DQ/DQS output hold time from DQS tQH tHP - tQHS -tHP - tQHS -ps
First DQS latching transition to associated clock
edge tDQSS -0.25 + 0.25 -0.25 + 0.25 tCK
DQS input high pulse width tDQSH 0.35 -0.35 -tCK
DQS input low pulse width tDQSL 0.35 -0.35 -tCK
DQS falling edge to CK setup time tDSS 0.2 -0.2 -tCK
DQS falling edge hold time from CK tDSH 0.2 -0.2 -tCK
Mode register set command cycle time tMRD 2 - 2 - tCK
Write postamble tWPST 0.4 0.6 0.4 0.6 tCK 10
Write preamble tWPRE 0.35 -0.35 -tCK
Address and control input setup time tIS(base) 250 -350-ps 5,7,9,
23
Address and control input hold time tIH(base) 375 -475-ps 5,7,9,
23
Read preamble tRPRE 0.9 1.1 0.9 1.1 tCK
Read postamble tRPST 0.4 0.6 0.4 0.6 tCK
Active to active command peri od for 1KB page size
products tRRD 7.5 -7.5-ns 4
Active to active command peri od for 2KB page size
products tRRD 10 -10-ns 4
Four Active Window fo r 1KB page size products tFAW 37.5 -37.5-ns
Four Active Window fo r 2KB page size products tFAW 50 -50-ns
CAS to CAS command delay tCCD 2 2tCK
Rev. 0.2 / Mar. 2005 21
512Mb A-ver. DDR2 SDRAM
-Continue-
Parameter Symbol DDR2-533 DDR2-400 Unit Note
min max min max
Write recovery time tWR 15 -15-ns
Auto pre ch arge write reco ve r y + p r e c h a rg e time tDAL WR+tRP -WR+tRP -tCK 14
Internal write to read command delay tWTR 7.5 -10-ns 24
Internal read to precharge command delay tRTP 7.5 7.5 ns 3
Exit self refresh to a non-read command tXSNR tRFC + 10 tRFC + 10 ns
Exit self refresh to a read command tXSRD 200 -200 -tCK
Exit precharge power down to any non-read
command tXP 2 - 2 - tCK
Exit active power down to read command tXARD 2 2 tCK 1
Exit active power down to read command
(Slow exit, Lower power) tXARDS 6 - AL 6 - AL tCK 1, 2
CKE minimum pulse width
(high and low pulse width) tCKE 33tCK 27
ODT turn-on delay tAOND 2222tCK
ODT turn-on tAON tAC(min) tAC(max)+
1tAC(min) tAC(max)+
1ns 16
ODT turn-on(Power-Down mode) tAONPD tAC(min)+2 2tCK+
tAC(max)+
1tAC(min)+2 2tCK+
tAC(max)+
1ns
ODT turn-off delay tAOFD 2.5 2.5 2.5 2.5 tCK
ODT turn-off tAOF tAC(min) tAC(max)+
0.6 tAC(min) tAC(max)+
0.6 ns 17
ODT turn-off (Power-Down mode) tAOFPD tAC(min)+2 2.5tCK+
tAC(max)+
1tAC(min)+2 2.5tCK+
tAC(max)+
1ns
ODT to power down entry latency tANPD 3 3 tCK
ODT power down exit latency tAXPD 8 8 tCK
OCD drive mode output delay tOIT 0 12 0 12 ns
Minimum time clocks remains ON after CKE
asynchronously drops LOW tDelay tIS+tCK+tIH tIS+tCK+tIH ns 15
Rev. 0.2 / Mar. 2005 22
512Mb A-ver. DDR2 SDRAM
Parameter Symbol DDR2-800 DDR2-667 Unit Note
min max min max
DQ output access time from CK/CK tAC -400 +400 -450 +450 ps
DQS output access time from CK/CK tDQSCK -350 +350 -400 +400 ps
CK high-level width tCH 0.45 0.55 0.45 0.55 tCK
CK low-level width tCL 0.45 0.55 0.45 0.55 tCK
CK half period tHP min(tCL,
tCH) -min(tCL,
tCH) -ps 11,12
Clock cycle time, CL=x tCK 2500 3000 8000 ps 15
DQ and DM input setup time tDS(base) 50 - 100 - ps 6,7,8,20
DQ and DM input hold time tDH(base) 125 - 175 - ps 6,7,8,21
Control & Address input pulse width for each input tIPW 0.6 -0.6-tCK
DQ and DM input pulse width for each input tDIPW 0.35 -0.35-tCK
Data-out high-impedance time from CK/CK tHZ - tAC max - tAC max ps 18
DQS low-impedance time from CK/CK tLZ(DQS) tAC min tAC max tAC min tAC max ps 18
DQ low-impedance time from CK/CK tLZ(DQ) 2*tAC min tAC max 2*tAC min tAC max ps 18
DQS-DQ skew for DQS and associated DQ signals tDQSQ -200-240ps 13
DQ hold skew factor tQHS -300-340ps 12
DQ/DQS output hold time from DQS tQH tHP - tQHS -tHP - tQHS -ps
First DQS latching transition to associated clock
edge tDQSS - 0.25 + 0.25 - 0.25 + 0.25 tCK
DQS input high pulse width tDQSH 0.35 -0.35 -tCK
DQS input low pulse width tDQSL 0.35 -0.35 -tCK
DQS falling edge to CK setup time tDSS 0.2 -0.2 -tCK
DQS falling edge hold time from CK tDSH 0.2 -0.2 -tCK
Mode register set command cycle time tMRD 2 - 2 - tCK
Write postamble tWPST 0.4 0.6 0.4 0.6 tCK 10
Write preamble tWPRE 0.35 -0.35 -tCK
Address and control input setup time tIS(base) 175 -200 -ps 5,7,9,22
Address and control input hold time tIH(base) 250 -275 -ps 5,7,9,23
Read preamble tRPRE 0.9 1.1 0.9 1.1 tCK 19
Read postamble tRPST 0.4 0.6 0.4 0.6 tCK 19
Activate to precharge command tRAS 45 70000 45 70000 ns 3
Active to active command period for 1KB page size
products tRRD 7.5 -7.5 -ns 4
Active to active command period for 2KB page size
products tRRD 10 -10 -ns 4
Four Activ e Window fo r 1KB page siz e products tFAW 37.5 -37.5 -ns
Four Activ e Window fo r 2KB page siz e products tFAW 50 -50 -ns
CAS to CAS command delay tCCD 2 2tCK
Write recovery time tWR 15 -15 -ns
Auto pre ch arge write reco ve r y + p r e c h a rg e time tDAL WR+tRP -WR+tRP -tCK 14
Internal write to read command delay tWTR 7.5 -7.5-ns
Internal read to precharge command delay tRTP 7.5 7.5 ns 3
Exit self refresh to a non-read command tXSNR tRFC + 10 tRFC + 10 ns
Exit self refresh to a read command tXSRD 200 - 200 -tCK
Exit precharge power down to any non-read
command tXP 2 - 2 - tCK
Exit active power down to read command tXARD 2 2 tCK 1
Exit active power down to read command
(Slow exit, Lower power) tXARDS 8 - AL 7 - AL tCK 1, 2
Rev. 0.2 / Mar. 2005 23
512Mb A-ver. DDR2 SDRAM
-Continue-
Parameter Symbol DDR2-800 DDR2-667 Unit Note
min max min max
CKE minimum pulse width
(high and low pulse width) tCKE 33tCK
ODT turn-on delay tAOND 22 2 2tCK
ODT turn-on tAON tAC(min) tAC(max)
+0.7 tAC(min) tAC(max)
+0.7 ns 6,16
ODT turn-on(Power-Down mode) tAONPD tAC(min)
+2 2tCK+
tAC(max)+1 tAC(min)+2 2tCK+
tAC(max)+1 ns
ODT turn-off delay tAOFD 2.5 2.5 2.5 2.5 tCK
ODT turn-off tAOF tAC(min) tAC(max)
+0.6 tAC(min) tAC(max)+ 0.6 ns 17
ODT turn-off (Power-Down mode) tAOFPD tAC(min)
+2 2.5tCK+
tAC(max)+1 tAC(min)
+2 2.5tCK+
tAC(max)+1 ns
ODT to power down entry latency tANPD 3 3 tCK
ODT power down exit latency tAXPD 8 8 tCK
OCD drive mode output delay tOIT 0 12 0 12 ns
Minimum time clocks remains ON after CKE
asynchronously drops LOW tDelay tIS+tCK
+tIH tIS+tCK+tIH ns 15
Rev. 0.2 / Mar. 2005 24
512Mb A-ver. DDR2 SDRAM
General notes, which may apply for all AC parameters
1. Slew Rate Measurement Levels
a. Output slew rate for falling and rising edges is measured between VTT - 250 mV and VTT + 250 mV for single ended signals.
For differential signals (e.g. DQS - DQS) output slew rate is measured between DQS - DQS = -500 mV and DQS - DQS = +500mV.
Output slew rate is guaranteed by design, but is not necessarily tested on each device.
b. Input slew rate for single ended signals is measured from dc-level to ac-level: fro m VIL(dc) to VIH(ac) for rising edges and from
VIH(dc) and VIL(ac) for falling edges.
For differential signals (e.g. CK - CK ) slew rate for rising edges is measured from CK - CK = -250 mV to CK - CK = +500 mV(250mV
to -500 mV for falling egd es) .
c. VID is the magnitude of the dif ference bet ween the input voltage on CK and the input voltage on CK, or between DQS and DQS for
differential strobe.
2. DDR2 SDRAM AC timing reference load
The following figure represents the timing reference load used in defining the relevant timing parameters of the part. It is not
intended to be either a precise representation of the typical system environment nor a depiction of the actual load presented by a
production tester. System designers will use IBIS or other simulation tools to correlate the timing reference load to a system environ-
ment. Manufacturers will correlate to their production test conditions (generally a coaxial transmission line terminated at the tester
electronics).
The output timing reference voltage level for single ended signals is the crosspoint with VTT. The output timing reference voltage
level for differential signals is the crosspoi nt of the true (e.g. DQS) and the comp lement (e.g. DQS) sig nal.
3. DDR2 SDRAM output slew rate test load
Output slew rate is characterized under the test conditions as shown below.
4. Differential data strobe
DDR2 SDRAM pin timings are specified for either single ended mode or differential mode depending on the setting of the EMRS
“Enable DQS” mode bit; timing advantages of differential mode are realized in system design. The method by which the DDR2
SDRAM pin timings are measured is mode dependent. In single
VDDQ
DUT
DQ
DQS
DQS
RDQS
RDQS
Output VTT = VDDQ/2
25
Timing
reference
point
AC Timing Reference Load
VDDQ
DUT DQ
DQS, DQS
RDQS, RDQS
Output VTT = VDDQ/2
25
Test point
Slew Rate Test Load
Rev. 0.2 / Mar. 2005 25
512Mb A-ver. DDR2 SDRAM
VREF. In differential mode, these timing relationships are measured relative to the cr osspoint of DQS and its complement, DQS. This
distinction in timing meth ods is guaranteed by design and characterization. Note that when differential data strobe mode is disabled
via the EMRS, the complementary pin, DQS, must be tied externally to VSS through a 20 ohm to 10 K ohm resistor to insure proper
operation.
5. AC timings are for linear signal transitions. See System Derating for other sign al transitions.
6. These parameters guarantee device behavior, but they are not necessarily tested on each device.
They may be guaranteed by device design or tester correlation.
7. All voltages referenced to VSS.
8. Tests for AC timing, IDD, and electrical (AC and DC) characteristics, may be conducted at nominal reference/
supply voltage levels, but the related specifications and device operation are guaranteed for the full voltage
range specified.
tDS tDS tDH
tWPRE tWPST
tDQSH tDQSL
DQS
DQS
D
DMin
DQS/
DQ
DM
tDH
Figure -- Data input (write) timing
DMin DMin DMin
DDD
DQS
VIH(ac)
VIL(ac)
VIH(ac)
VIL(ac)
VIH(dc)
VIL(dc)
VIH(dc)
VIL(dc)
tCH tCL
CK
CK
CK/CK
DQS/DQS
DQ
DQS
DQS
tRPST
Q
tRPRE
tDQSQmax
tQH tQH
tDQSQmax
Figure -- Data output (read) timing
QQQ
Rev. 0.2 / Mar. 2005 26
512Mb A-ver. DDR2 SDRAM
Specific Notes for dedicated AC parameters
1. User can choose which active power down exit timing to use via MRS(bit 12). tXARD is expected to be used for fast active
power down exit timing. tXARDS is expected to be used for slow active power down exit timing where a lower power value is
defined by each vendor data sheet.
2. AL = Additive Latency
3. This is a minimum requirement. Minimum read to precharge timing is AL + BL/2 providing the tRTP and tRAS(min) have been
satisfied.
4. A minimum of two clocks (2 * tCK) is required irrespective of operating frequency
5. Timings are guaranteed with command/address input slew rate of 1.0 V/ns. See System Derating for other slew rate values.
6. Timings are guaranteed with data, mask, and (DQS/RDQS in singled ended mode) input slew rate of 1.0 V/ns. See System
Derating for other slew rate values.
7. Timings are guaranteed with CK/CK differential slew rate of 2.0 V/ns. Timings are guaranteed for DQS signals with a
differen tial slew rate of 2.0 V/ns in differential strobe mode and a slew rate of 1V/ns in single ended mode. See System
Derating for other slew rate values.
8. tDS and tDH derating table (for DDR2- 400 / 533)
1) For all input signals the total tDS(setup time) and tDH(hold time) required is calculated by adding the datasheet value to the derating
value listed in above Table.
Setup(tDS) nominal slew rate for a rising signal is defined as the slew rate between the last crossing of VREF(dc) and the first crossing
of Vih(ac)min. Setup(tDS) nominal slew rate for a falling signal is defined as the slew rate between the last crossing of VREF(dc) and
the first crossing of Vil(ac)max. If the actual signal is always earlier than the nominal slew rate line between shaded ‘ VREF(dc) to ac
region’, use nominal slew rate for derating value(see Fig a.) If the actual signal is later than the nominal slew rate line anywhere
between shaded ‘VREF(dc) to ac region’, the slew rate of a tangent line to the actual signal from the ac level to dc level is used for
derating value(see Fig b.)
Hold(tDH) nominal slew rate for a rising signal is defined as the slew rate rate between the last crossing of Vil(dc) max and the first
crossing of VREF(dc). Hold (tDH) nominal slew rate for a falling signal is defined as the slew rate between the last crossing of Vih(dc)
min and the fi rst cr ossi ng of V REF( dc). If the actual signal is earlier than the nominal slew rate line anywhere between shaded ‘dc to
VREF(dc) region, the slew rate of a tangent line to the actual signal from the dc level to VREF(dc) level is used for derating value(see
Fig d.)
Although for slow slew rates the total setup time might be negative(i.e. a valid inpu t si gnal will not have reached VIH/IL(ac) at the
tD
S
tD
H
tD
S
tD
H
tD
S
tD
H
tD
S
tD
H
tD
S
tD
H
tD
S
tD
H
tD
S
tD
H
tD
S
tD
H
tD
S
tD
H
2.0 125 45 125 45 +125 +45 - - - - - - - - - - - -
1.5 83218321+83+219533----------
1.0 00000012122424--------
0.9 - - -11-14-11-141 -213102522 - - - - - -
0.8 - - - - -25 -31 -13 -19 -1 -7 11 5 23 17 - - - -
0.7 -------31-42-42-19-7-85-6176--
0.6 ---------43-59-31-47-19-35-7-235-11
0.5 -----------74-89-62-77-50-65-38-53
0.4 - - - - - - - - - - - - -127 -140 -115 -128 -103 -116
t DS, tDH Derating V alues(ALL uni ts in ' ps', No te 1 appl ies to en t ire T able)
1.6 V/ns 1.4 V/n s 1. 2 V /n s 1. 0 V /n s4.0 V/n s 3.0 V/n s 0.8 V/n s
DQ
Slew
rate
V/ns
DQS, DQS Diff e rent ial Slew Rat e
2.0 V/n s 1.8 V/n s
Rev. 0.2 / Mar. 2005 27
512Mb A-ver. DDR2 SDRAM
time of the rising cl ock transition) a valid inp ut signal is still required to complete the transition and reach VIH/IL(ac).
For slew rate in between the values listed in table x, the derating valued may obtained by linear interpolation.
These values are typically not subject to production test. They are verified by design and characterization.
Hold(tDH) nominal slew rate for a rising signal is defined as the slew rate rate between the last crossing of Vil(dc) max and the first
crossing of VREF(dc). Hold (tDH) nominal slew rate for a falling signal is defined as the slew rate between the last crossing of Vih(dc)
min and the fi rst cr ossi ng of V REF( dc). If the actual signal is earlier than the nominal slew rate line anywhere between shaded ‘dc to
VREF(dc) region, the slew rate of a tangent line to the actual signal from the dc level to VREF(dc) level is used for derating value(see
Fig d.)
Although for slow slew rates the total setup time might be negative(i.e. a valid inpu t si gnal will not have reached VIH/IL(ac) at the
time of the rising cl ock transition) a valid inp ut signal is still required to complete the transition and reach VIH/IL(ac).
For slew rate in between the values listed in table x, the derating valued may obtained by linear interpolation.
These values are typically not subject to production test. They are verified by design and characterization.
Rev. 0.2 / Mar. 2005 28
512Mb A-ver. DDR2 SDRAM
Fig. a Illustration of nominal slew rate for tIS,tDS
CK,DQS
VDDQ
VIH(ac)min
VIH(dc)min
VREF(dc)
VIL(dc)max
VIL(ac)max
Vss
Delta TF Delta TR
VREF to ac
region
nominal
slew rate
nominal
slew rate
tIS,
tDS
VREF(dc)-VIL(ac)max
Setup Slew Rate
Falling Signal =Delta TF VIH(ac)min-VREF(dc)
Setup Slew Rate
Rising Signal =Delta TR
tIH,
tDH tIS,
tDS
tIH,
tDH
CK, DQS
Rev. 0.2 / Mar. 2005 29
512Mb A-ver. DDR2 SDRAM
Fig. -b Illustration of tangent line for tIS,tDS
CK, DQS
VDDQ
VIH(ac)min
VIH(dc)min
VREF(dc)
VIL(dc)max
VIL(ac)max
Vss
Del ta TF
Del ta TR
VREF to ac
region
tangent
line
Tangent
line
tIS,
tDS
CK, DQS
Nomial
line
nominal
line
Delta TR
Tangent line[VIH(ac)min-VREF(dc)]
Setup Slew Rate
Rising Signal =
Tangent line[VREF(dc)-VIL(ac)max]
Setup Slew Rate
Falling Signal =Delta TF
tIH,
tDH tIS,
tDS
tIH,
tDH
Rev. 0.2 / Mar. 2005 30
512Mb A-ver. DDR2 SDRAM
Fig. -c Illustration of nominal line for tIH, tDH
CK, DQS
VDDQ
VIH(ac)min
VIH(dc)min
VREF(dc)
VIL(dc)max
VIL(ac)max
Vss
Delta TR
nominal
slew ra te
nominal
sle w rate
tIS,
tDS
VREF(dc)-VIL(dc)max
Hold Slew Rate
Rising Signal =Delta TR VIH(dc )min - VREF(dc)
H old Sle w Ra te
Falling Signal =Delta TF
dc to VREF
region
Delta TF
CK, DQS
tIH,
tDH tIS,
tDS
tIH,
tDH
Rev. 0.2 / Mar. 2005 31
512Mb A-ver. DDR2 SDRAM
Fig. -d Illustration of tangent line for tIH , tDH
CK, DQS
VDDQ
VIH(ac)min
VIH(dc)min
VREF(dc)
VIL(dc)max
VIL(ac)max
Vss
Delta TF
tangent
line
Tangent
line
tIS,
tDS
CK, DQS
nominal
line
dc to VREF
region nominal
line
Delta T R
Tangent line[VIH(ac)min-VREF(dc)]
Hold Slew Rate
Falli ng Si g n al =Delta TF
Tangent line[VREF(dc)-VIL(ac)max]
Hold Slew Rate
Rising Signal =Delta TR
tIH,
tDH
tIS,
tDS
tIH,
tDH
Rev. 0.2 / Mar. 2005 32
512Mb A-ver. DDR2 SDRAM
9. tIS and tIH (input setup and hold) derating
tIS tIH tIS tIH tIS tIH Units Notes
4.0 +187 +94 +217 +124 +247 +124 ps 1
3.5 +179 +89 +209 +119 +239 +149 ps 1
3.0 +167 +83 +197 +113 +227 +143 ps 1
2.5 +150 +75 +180 +105 +210 +135 ps 1
2.0 +125 +45 +155 +75 +185 +105 ps 1
1.5 +83 +21 +113 +51 +143 +81 ps 1
1.0 +0 0 +30 +30 +60 60 ps 1
0.9 -11 -14 +19 +16 +49 +46 ps 1
0.8 -25 -31 +5 -1 +35 +29 ps 1
0.7 -43 -54 -37 -53 -7 +6 ps 1
0.6 -67 -83 -37 -53 -7 -23 ps 1
0.5 -100 -125 -80 -95 -50 -65 ps 1
0.4 -150 -188 -145 -158 -115 -128 ps 1
0.3 -223 -292 -255 -262 -225 -232 ps 1
0.25 -250 -375 -320 -345 -290 -315 ps 1
0.2 -500 -500 -495 -470 -465 -440 ps 1
0.15 -750 -708 -770 -678 -740 -648 ps 1
0.1 -1250 -1125 -1420 -1095 -1065 TBD ps 1
tIS tIH tIS tIH tIS tIH Units Notes
4.0 +150 +94 +180 +124 +210 +154 ps 1
3.5 +143 +89 +173 +119 +203 +149 ps 1
3.0 +133 +83 +163 +113 +193 +143 ps 1
2.5 +120 +75 +150 +105 +180 +135 ps 1
2.0 +100 +45 +130 +75 +160 +105 ps 1
1.5 +67 +21 +97 +51 +127 +81 ps 1
1.0 0 0 +30 +30 +60 60 ps 1
0.9 -5 -14 +25 +16 +55 +46 ps 1
0.8 -13 -31 +17 -1 +47 +29 ps 1
0.7 -22 -54 +8 -24 +38 +6 ps 1
0.6 -34 -83 -4 -53 -26 -23 ps 1
0.5 -60 -125 -30 -95 0 -65 ps 1
0.4 -100 -188 -70 -158 -40 -128 ps 1
0.3 -168 -292 -138 -262 -108 -232 ps 1
0.25 -200 -375 -170 -345 -140 -315 ps 1
0.2 -325 -500 -295 -470 -265 -440 ps 1
0.15 -517 -708 -487 -678 -457 -648 ps 1
0.1 -1000 -1125 -970 -1095 -940 -1065 ps 1
tIS, tIH Derating Values for DDR2 400, DDR2 533
Command /
Address Slew
rate(V/ns)
2.0 V/nsCK, CK
Differential Slew R ate
1.5 V/ns 1.0 V/ns
Command /
Address Slew
rate(V/ns)
tIS, tIH Derating Values for DDR2 667, DDR2 800
CK, CK Differential Slew R ate
2.0 V/ns 1.5 V/ns 1.0 V/n s
Rev. 0.2 / Mar. 2005 33
512Mb A-ver. DDR2 SDRAM
1) For all input signals the total tIS(setup time) and tIH(hold) time) required is calculated by adding the datasheet value to the derating
value listed in above Table.
Setup(tIS) nominal sl ew r at e fo r a risi ng signal is de fi ned as t he s lew r ate between the last cro ssing of VREF(dc ) and th e first c rossing
of VIH(ac)min. Setup(tIS) nominal slew rate for a falling signal is defined as the slew rate between the last crossing of VREF(dc) and
the first crossing of VIL(ac)max. If the actual signal is always earlier than the nominal slew rate for line between shaded ‘VREF(dc) to
ac region’, use nominal slew rate for derating value(see fig a.) If the actual signal is later than th e nominal slew rate line anywhere
between shaded ‘VREF(dc) to ac region, the slew rate of a tangent line to the actual signal from the ac level to dc level is used for der-
ating value(see Fig b.)
Hold(tIH) nominal slew rate for a risi ng signal is defi ned as th e slew r ate between the last cr ossing o f VIL(dc)max an d the fir st cross-
ing of VREF(dc). Hold(tIH) nominal slew rate for a falling signal is defined as the slew rate between the last crossing of VREF(dc). If the
actual signal signal is always later than the nominal slew rate line between shad ed ‘dc to VREF(dc) region, use nominal slew rate for
derating value(see Fig.c) If the actual signal is earlier than the nominal slew rate line anywhere between shaded ‘dc to VREF(dc)
region’, the slew rate of a tangent line to the actual signal from the dc level to VREF(dc) level is used for derating value(see Fig d.)
Although for slow rates the total setup time might be negative(i.e. a valid input signal will not have re ached VIH/IL(ac) at the time of
the rising clock transition) a valid input signal is still required to complete the transition and reach VIH/IL(ac).
For slew rates in between the values listed in table, the derating values may obtained by linear interpolation.
These values are typically not subject to production test. Th ey are verified by design and characterizat io n.
10. The maximum limit for this parameter is not a dev ice limit. The devi ce w il l operate with a greater value for this parameter, but
system performance (bus turnaround) will degrade accordingly.
11. MIN ( t CL, t CH) refers to the smaller of the actual clock low time and the actual clock high time as provided to the device
(i.e. this value can be greater than the minim um sp ecification l im i ts for t CL and t CH). For example, t CL and t CH are = 50%
of the period, less the half period jitter ( t JIT(HP)) of the clock source, and less the half period jitter due to crosstalk ( t
JIT(crosstalk)) into the clock traces.
12. t QH = t HP – t QHS, where:
tHP = minimum half clock period for any given cycle and is defined by clock high or clock low ( tCH, tCL).
tQHS accounts for:
1) The pulse duration distortion of on-chip clock circuits; and
2) The worst case push-out of DQS on one transition followed by the worst case pull-in of DQ on the next transition, both
of which are, separately, due to data pin skew and output pattern effects, and p-channel to n-channel variation of the
output drivers.
13. tDQSQ: Consists of data pin skew and output pattern effects, and p-channel to n-channel variation of th e out put drivers as
well as output slew rate mismatch between DQS/ DQS and associated DQ in any given cycle.
14. DAL = WR + RU{tRP(ns)/tCK(ns)}, where RU stands for round up. WR refers to the tWR parameter stored in the MRS. For
tRP, if the result of the division is not already an integer, round up to the next highest integer. tCK refers to the application
clock period.
Example: For DDR533 at tCK = 3.75ns with tWR programmed to 4 clocks.
tDAL = 4 + (15ns/3.75ns) clocks = 4+(4) clocks = 8 clocks.
15. The clock frequency is allowed to change during self–refresh mode or precharge power-down mode. In case of clock
frequency change during precharge power-down, a specific procedure is required as described in section 2.9.
16. ODT turn on time min is when the device leaves high impedance and ODT resistance begins to turn on.
ODT turn on time max is when the ODT resistance is fully on. Both are measured from tAOND.
17. ODT turn off time min is when the device starts to turn off ODT resistance.
ODT turn off time max is when the bus is in high impedance. Both are measured from tAOFD.
18. tHZ and tLZ transitions occur in the same access time as valid data t ransitions. Thesed parameters are referenced to a
specific voltage level which specifies when the device output is no longer driving(tHZ), or begins driving (t LZ). Below figure
Rev. 0.2 / Mar. 2005 34
512Mb A-ver. DDR2 SDRAM
shows a method to calculate the point when device is no l ong er driving (tHZ), or be gins driving (tLZ) by measuring th e signal
at two different voltages. The actual voltage measurement points are not critic al as long as the calculation is con sistenet.
19. tRPST end po int and tRPRE begin point are no t referenced to a specific voltage level but specify when the device output is no
longer driving (tRPST), or begins driving (tRPRE). Below figure shows a method to calculate these points when the device is
no longer driving (tRPST), or begins driving (tRPRE). Below Figure shows a meth od to calculate these points when the device
is no longer driving (tRPST), or begins driving (tRPRE) by measuring the signal at two different voltages. The actual voltage
measurement points are not critical as long as the calculation is consis tent.
20. Input wavefo rm timing with differential data strobe enabled MR[bit10] =0, is referenced from the input signal crossing at the
VIH(ac) level to the differential data strobe crosspoint for a rising signal, and from the input signal crossing at the VIL(ac) level
to the differential data strobe crosspoint for a falling signal applied to the device under test.
21. Input wavefo rm timing with differential data strobe enabled MR[bit10]=0, is referenced from the input signal crossing at the
VIH(dc) level to the differential data strobe crosspoint for a rising signal and VIL(dc) to the differential data strobe crosspoint
for a falling signal applied to the device under test.
22. Input waveform timing is referenced from the input signal crossing at the VIH(ac) level for a rising signal and VIL(ac) for a falling
signal applied to the device under test.
23. Input waveform timing is referenced from the input signal crossing at the VIL(dc) level for a rising signal and VIH(dc) for a falling
signal applied to the device under test.
tHZ , tRPST end point = 2*T1-T2 tLZ , tRPRE begin point = 2*T1-T2
VOH + xmV
VOH + 2xmV
VOL + 1xmV
VOL + 2xmV
tHZ
tRPST end po int
VTT + 2xmV
VTT + xmV
VTT -xmV
VTT - 2xm V
tHZ
tRPRE begin point
DQS
VDDQ
VIH(ac)min
VIH(dc)min
tDH
tDS
DQS
VREF(dc)
VSS
VIL(dc)max
VIL(ac)max
tDH
tDS
D iffere ntial Inp u t wav e form timing
Rev. 0.2 / Mar. 2005 35
512Mb A-ver. DDR2 SDRAM
24. tWTR is at least two clocks (2*tCK) independent of operation frequency.
25. Input waveform timing with single-ended data st ro be enabl e d MR[bit10] = 1, is referenced from the input sign al crossing at the
VIH(ac) level to the single-ended data strobe crossing VIH/L(dc) at the start of its tr ansition for a rising signal, and from the input sig-
nal crossing at the VIL(ac) level to t he single-ended data strob e crossi ng VIH/L(dc) at the start of its t ransition for a falling signal
applied to the device under test. The DQS signal must be monotonic between VIL(dc)max and VIH(dc) min.
26. Input waveform timing with single-ended data st ro be enabl e d MR[bit10] = 1, is referenced from the input signal crossing at the
VIH(dc) level to the single-ended data strobe crossing VIH/L(ac) at the end of its transition for a rising signal, and from the input sig-
nal crossing at the VIL(dc) level to the single-ended data strobe crossing VIH/L(ac) at the end of its transition for a falling signal
applied to the device under test. The DQS signal must be monotonic between VIL(dc) max and VIH(dc) min.
27 . tCKE min of 3 clocks means CKE must be registered on three consecutive positive clock edges. CKE must remain at the valid input
level the entire time it takes to achieve the 3 clocks of registration. Thus, after any CKE transition, CKE may not transition from i ts
valid level during the time period of tIS + 2*tCK + tIH.
DQS
VDDQ
VIH(ac)min
VIH(dc)min
tIH
tIS
DQS
VREF(dc)
VSS
VIL(dc)max
VIL(ac)max
tIHtIS
Rev. 0.2 / Mar. 2005 36
512Mb A-ver. DDR2 SDRAM
5. Package Dimensions
Package Dimension(x4,x8)
60Ball Fine Pitch Ball Grid Array O utl ine
A1 Ball Mark
14.00 +/- 0.10
<Top View>
12.00 +/- 0.10
0.8 x 10 = 8.0
A B C D E F G H J K L
1 2 3
7 8 9
0.34 +/- 0.05
1.20 Max.
0.80
0.80
0.80 x 8 = 6.40
A1 Ball Mark
<Bottom View> note: all dimension units are Millimeters.
60 - φ0.45 ±0.05
Rev. 0.2 / Mar. 2005 37
512Mb A-ver. DDR2 SDRAM
Package Dimension(x16)
84Ball Fine Pitch Ball Grid Array O utl ine
A1 Ball Mark
14.00 +/- 0.10
<Top View>
12.00 +/- 0.10
0.8 x 14 = 11.2
A B C D E F G H J K L M N P R
1 2 3
7 8 9
0.34 +/- 0.05
1.20 Max.
0.80
0.80
0.80 x 8 = 6.40
A1 Ball Mark 84 - φ0.45 ±0.05
<Bottom View>
note: all dimension units are Millimeters.