FUJITSU MICROELECTRONICS
DATA SHEET
Copyright©2009 FUJITSU MICROELECTRONICS LIMITED All rights reserved
2009.11
ASSP For Power Management
BIPOLAR
POWER-VOLTAGE MONITORING IC
WITH WATCHDOG TIMER
MB3793-34A
■DESCRIPTION
The MB3793 is an integrated circuit to monitor power voltage; it incorporates a watchdog timer.
A reset signal is output when the pow er is cut or f alls abruptly. When the po wer reco v ers normally after resetting,
a pow er-on r eset signal i s output to microprocessor unit s (MPUs). An inte rnal watchdog time r with tw o inputs for
system operation diagnosis can provide a fail-safe function for various application systems.
■FEATURES
• Precise detection of power voltage fall: ±2.5%
• Detection voltage with hysteresis
• Low power disper sion: ICC = 38 μA (Typ)
• Internal dual-input watchd og timer
• Watchdog timer halt function
• Independently-set watchdog and reset times
■APPLICATION
Arcade Amusement etc.
Model No. Marking Code Detection voltage
MB3793-34A 3793AJ 3.4 V
DS04-27407-1E
MB3793-34A
2DS04-27407-1E
■PIN ASSIGNMENT
■PIN DESCRIPTION
Pin No. Symbol Description
1 RESET Outputs reset pin
2 CTW Sets watchdog timer monitoring time pin
3 CTP Sets power-on reset hold time pin
4 GND Ground pin
5V
CC Power supply pin
6INH
This pin forces the watchd og timer on /off. When this pin is High
level, the watchdog timer is stopped.
7 CK2 Inputs clock 2 pin
8 CK1 Inputs clock 1 pin
RESET
CTW
CTP
GND
CK1
CK2
INH
VCC
(FPT-8P-M02)
(T OP VIEW)
1
2
3
4
8
7
6
5
MB3793-34A
DS04-27407-1E 3
■BLOCK DIAGRAM
I1 = 3 μA
..I2 = 30 μA
..
R1 =
435 kΩ
..
3
1
6
2
8
7
5
4
CTP
To VCC of all blocks
Pulse generator 1
Watchdog
timer
Reference
voltage
generator
To GND of
all blocks
Pulse generator 2
Output circuit Logic circuit
RESET
INH
CTW
CK1
CK2
VCC
GND
Comp.S
−
+
VS
VREF = 1.24 V
..
R2 =
240 kΩ
..
MB3793-34A
4DS04-27407-1E
■BLOCK FUNCTIONS
1. Comp.S
Comp.S is a comparator with hysteresis to compare the reference voltage with a voltage (VS) that is the result
of dividing the power voltage (VCC) by resistors R1 and R2. When VS fa lls below 1.24 V, a reset signal is output.
This function enables the MB 37 9 3 to dete ct an ab no rmality with i n 1 μs when the power is cut or falls abruptly.
2. Output circuit
The output circuit has a comparator to control the reset signal (RESET) output. When the voltage at the CTP
pin for setting th e power-on reset hold time exceeds the threshold voltage, resetting is canceled.
Since the reset (RESET) output buffer has the CMOS organization, no pull-up resistor is needed.
3. Pulse generator
The pulse gener ator generates pulses when the v oltage at the CK1 and CK2 input clo ck pins changes from Lo w
level to High level (positive-edge trigger) and exceeds the threshold voltage; it sends the clock signal to the
watchdog timer.
4. Watchdog timer
The w atchdog time r can m onitor tw o cloc k pulses . Short-circuit the CK1 and CK2 cloc k pins to monitor a single
clock pulse.
5. Logic circuit
Logic circuit contr ols charging and discharging of the power -on reset hold time setting capacity (C TP) on a signal
of Comp.S and Watchdog timer.
MB3793-34A
DS04-27407-1E 5
■ABSOLUTE MAXIMUM RATINGS
* : The voltage is based on the ground voltage (0 V).
WARNING: Semiconductor devices can be permanently damaged by application of stress (voltage, current,
temperature, etc.) in excess of absolute maximum ratings. Do not exceed these ratings.
■RECOMMENDED OPERATING CONDITIONS
* : The watchdog time r monitor time range depends on the rating of the setting capacitor.
WARNING: The recommended operating conditions are req uired in order to ensure the normal operation of
the semiconductor device. All of the device's electrical characteristics are warranted when the
device is operated within these ranges.
Always use semiconductor devices within their recommen ded operating condition ranges.
Operation outside these ranges may adversely affect reliability and could result in device failure.
No warranty is made with respect to uses, operating conditions, or combinations not represented
on the data sh eet. Users consider ing application outside th e listed conditio ns are advised to contact
their representatives beforehand.
Parameter Symbol Conditions Rating Unit
Min Max
Power supply voltage* VCC ⎯−0.3 +7V
Input voltage*
CK1 VCK1 ⎯
−0.3 VCC + 0.3
( ≤ +7) VCK2 VCK2 ⎯
INH VINH ⎯
Reset output voltage* RESET
VOL
VOH ⎯−0.3 VCC + 0.3
( ≤ +7) V
Reset output current IOL
IOH ⎯−10 +10 mA
Power dissipation PDTa ≤ +85 °C⎯200 mW
Storage temperature Tstg ⎯−55 +125 °C
Parameter Symbol Conditions Value Unit
Min Typ Max
Power supply voltage VCC ⎯1.2 5.0 6.0 V
Reset (RESET) output current IOL ⎯0— + 5 mA
IOH ⎯−5— 0
Power-on reset hold time setting
capacity CTP ⎯0.001 0.1 10 μF
Watchdog-timer monitoring time
setting capacity* CTW ⎯0.001 0.01 1 μF
Operating ambient temperature Ta ⎯−40 +25 +85 °C
MB3793-34A
6DS04-27407-1E
■ELECTRICAL CHARACTERISTICS
1. DC Characteristics
* : This parameter is guaranteed by design, which is not sup ported by a final test.
(VCC = +5 V, Ta = +25°C)
Parameter Symbol Conditions Value Unit
Min Typ Max
Power current ICC1 After exit from reset ⎯38 50 μA
Detection voltage
VSL VCC falling Ta = +25°C 3.32 3.40 3.48 V
Ta = −40 to +85°C 3.27* 3.40 3.53*
VSH VCC rising Ta = +25°C 3.40 3.48 3.56 V
Ta = −40 to +85°C 3.35* 3.48 3.61*
Detection voltage
hysteresis difference VSHYS VSH - VSL 35 80 120 mV
CK input threshold voltage VCIH ⎯1.4* 1.9 2.5 V
VCIL ⎯0.8 1.3 1.8* V
CK input hysteresis VCHYS ⎯0.4* 0.6 0.8* V
INH input voltage VIIH ⎯3.5 ⎯VCC V
VIIL ⎯0⎯0.8 V
Input current
(CK1,CK2,INH) IIH VIH = VCC ⎯01.0μA
IIL VIL = 0 V −1.0 0 ⎯μA
Reset output voltage VOH IRESET = −5 mA 4.5 4.75 ⎯V
VOL IRESET = +5 mA ⎯0.12 0.4 V
Reset-output minimum
power voltage VCCL IRESET = +50 μA⎯0.8 1.2 V
MB3793-34A
DS04-27407-1E 7
2. AC Characteristics
*: The voltage range is 10% to 90% at testing the reset output transition time.
(VCC = +5 V, Ta = +25°C)
Parameter Symbol Conditions Value Unit
Min Typ Max
Power-on reset hold time tPR CTP = 0.1 μF 80 130 180 ms
Watchdog time r monitoring time tWD CTW = 0.01 μF
CTP = 0.1 μF7.5 15 22.5 ms
Watchdog timer reset time tWR CTP = 0.1 μF 5 10 15 ms
CK input pulse width tCKW ⎯500 ⎯⎯ns
CK input pulse cycle tCKT ⎯20 ⎯⎯μs
Reset (RESET) output transition time Rising tr* CL = 50 pF ⎯⎯500 ns
Falling tf* CL = 50 pF ⎯⎯500 ns
MB3793-34A
8DS04-27407-1E
■TIMING DIAGRAM
1. Basic operation (Positive clock pulse)
CTP
RESET
INH
CTW
CK1
CK2
VSH
VCC
VSL
Vth
VH
VL
(1) (2) (3) (4)(5) (5) (6) (7) (8) (9) (10) (11) (12) (13)
tPR tWD tPR
tWR
tCKW
tCKT
MB3793-34A
DS04-27407-1E 9
2. Basic operation (Negative clock pulse)
CTP
RESET
INH
CTW
CK1
CK2
VSH
VCC
VSL
Vth
VH
VL
tPR tWD tPR
tWR
tCKW
tCKT
(1) (2) (3) (4)(5) (5) (6) (7) (8) (9) (10) (11) (12) (13)
MB3793-34A
10 DS04-27407-1E
3. Single-clock input monitoring (Positive clock pulse)
CTP
RESET
CTW
CK1
Vth
VH
VL
CK2
tWR
tWD
tCKT
tCKW
Note : The MB3793 can monitor only one clock.
The MB3793 checks the clock signal at every other input pulse.
Therefore, set watchdog timer monitor time tWD to the time that allows the MB 37 93
to monitor the period twice as long as the input clock pu lse.
MB3793-34A
DS04-27407-1E 11
4. Inhibition operation (Positive clock pulse)
CTP
RESET
INH
CTW
CK1
CK2
VSH
VCC
VSL
Vth
VH
VL
tPR tWD tPR
tWR
tCKW
(1) (2) (3) (4)(5) (5) (6) (7) (11) (8) (9) (10) (12) (13)
tCKT
MB3793-34A
12 DS04-27407-1E
5. Clock pulse input supplementation (Positive clock pulse)
CTW
CK1
CK2
VH
VL
tCKT
tCKW *1
*2
Note : The MB3793 watchdog timer monitors Clock1 (CK1) and Clock2 (CK2) pulses alternately.
When a CK2 pulse is detected after dete cting a CK1 pulse, the monitor ing time se tting capacity
(CTW) switches to charging from discharging.
When two consecutive pulses occu r on one side of this a lternation befo re switching, the second
pulse is ignored.
In the above figure, pulse *1 and *2 are ignored.
MB3793-34A
DS04-27407-1E 13
■OPERATION SEQUENCE
1. Positive clock pulse input
Refer to “1. Basic operation (positive clock pulse)” under “■ TIMING DIAGRAM.”
2. Negative clock pulse input
Refer to “2. Basic operation (negativ e clock pulse)” under “■ TIMING DIAGRAM.”
The MB3793 oper ates in the same way whether it inputs positive or negative pulses.
3. Single-clock input monitoring
To use the MB3793 while monitoring only one clock, connect clock pins CK1 and CK2.
Although the MB3793 operates basically in the same way as when monitoring two clocks, it monitors the clock
signal at every other input pulse.
Refer to “3. Single-clock input monitoring (positive clock pulse)” under “■ TIMING DIAGRAM.”
4. Description of Operations
The numbers given to the following items correspond to numbers (1) to (13) used in “■ TIMING DIAGRAM.”
(1) The MB3793 outputs a reset signal when the supply voltage (VCC) reaches about 0.8 V (VCCL).
(2) If VCC reaches or exceed s the rise-time detected v oltage V SH, the MB3793 starts charging th e power-on
reset hold time setting capacitor C TP. At this time, the output remains in a reset state. The VSH value is
3.48 V (Typ).
(3) When CTP has been charged for a certain period of time TPR (until the CTP pin voltage exceeds the
threshold voltage (Vth) after the start of charging), the MB3793 cancels the reset (setting the RESET pin
to “H” level from “L” level).
The Vth value is about 3.6 V with VCC = 5.0 V
The power-on reset hold time tPR is set with the following equation:
tPR (ms) A × CTP (μF)
The value of A is about 1300 with VCC = 5.0 V. The MB3793 also starts charging the watchdog ti mer
monitor time setting capacitor (CTW).
(4) When the voltage at the watchdog timer monitor time setting pin CTW reaches the “H” level threshold
voltage VH, the CTW switches from the charge state to the discharge state.
The value of VH is always about 1.24 V regardless of the detected voltage.
(5) If the CK2 pin inputs a clock pulse (posit ive edge trigger) when the CTW is being discharged in the
CK1-CK2 order or simultaneously, the CTW switches from the discharge state to the char ge state.
The MB3793 repeats operations (4) and (5) as long as the CK1/CK2 pin inputs clock pulses with the
system logic circu it op eratin g no rmally.
(6) If no clock pulse is fed to the CK1 or CK2 pin within the watchdog timer monitor time tWD due to some
prob lem with the system logic circuit, th e CTW pin is set to the “L” le vel thre shold volta ge VL or less and
the MB3793 outputs a reset signal (setting the RESET pin to “L” level from “H” level).
The value of VL is always about 0.24 V regardless of the detected voltage.
The watchdog timer monitor time tWD is set with the following equation:
tWD (ms) B × CTW (μF) + C × CTP (μF)
The value of B is hardly affected by the powe r supply voltage; it is about 1500 with VCC = 5.0 V.
The value of C is 0.
F or this reason:
tWD (ms) B × CTW (μF)
..
=
..
=
..
=
MB3793-34A
14 DS04-27407-1E
(7) When a certain period of tim e tWR has passed (un til the CTP pin v oltage reaches or exceeds Vth again
after rech arging the CTP), the MB3 793 cancels the reset signal and starts operating the w atchdog timer.
The watchdog timer monitor reset time tWR is set with the following equation:
tWR (ms) D × CTP (μF)
The value of D is 100 with VCC = 5.0 V.
The MB3793 repeat s operation s (4) and (5) as long a s the CK1/CK2 pin input s cloc k pulses. If no cloc k
pulse is input, the MB 37 93 rep e at s ope rations (6 ) an d (7 ).
(8) If VCC is lowered to the fall-time detected voltage (VSL) or less, the CTP pin voltage decreases and the
MB3793 outputs a reset signal (setting the RESET pin to “L” level from “H” level).
The value of VSL is 3.40 V (Typ).
(9) When VCC reaches or exceeds VSH again, the MB3793 starts charging the CTP.
(10) When the CTP pin voltage reaches or exceeds Vth, the MB3793 cancels the reset and restarts operating
the watchdog timer. It repeats operations (4) and (5) as long as the CK1/CK2 pin inputs clock pulses.
(11) Making the inhibit pin active (setting the INH pin to “H” from “L”) forces the watchdog timer to stop
operation.
This stops only the watchdog timer, leaving the MB3793 monitoring VCC (operations (8) to (10)).
The watchdog timer remains inactive unless the inhibit input is canceled.
The inhibition (INH) pin must be connecting a voltage of more low impedance, to evade of the noise.
(12) Canceling the inhibit input (setting the INH pin to “ L” from “H”) restarts the watchdog timer.
(13) The reset signal is output when the power su pply is turned off to set VCC to VSL or less.
..
=
1. Equation of time-setting capacitances (CTP and CTW) and set time
tPR [ms] A × CTP [μF]
tWD [ms] B × CTW [μF] + C × CTP [μF]
However, when CTP/CTW 10 or less, tWD [ms] B × CTW [μF]
tWR [ms] D × CTP [μF]
Values of A, B, C, and D
Note: The width of v alue of tPR, tWD and tWR becomes the sa me ratio as widt h (Min, Max) of each
specification value.
2. Example (when CTP = 0.1 μF and CTW = 0.01 μF)
A B C D Remark
1300 1500 0 100 VCC = 5.0 V
time
(ms)
Symbol VCC = 5.0 V
tPR 130
tWD 15
tWR 10
=
..
=
..
=
..
=
..
=
..
MB3793-34A
DS04-27407-1E 15
■TYPICAL CHARACTERISTICS
(Continued)
45
40
35
30
25
20 0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0
MB3793VINH VCC
(VINH = 0 V)
Ta = +25 °C
Ta = +85 °C
Ta = -40 °C
0012345678910
0.1
0.2
0.3
0.4
0.5
0.6
3.2
-20-40 0 +20 +40 +60 +80 +100 +120
3.3
3.4
3.5
3.6
3.7
VSH
VSL
0-1-2-3-4 -5 -6 -7 -8-9 -10
Ta = +25 °C
Ta = +85 °C
Ta = -40 °C
4.0
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
5.0
MB3793-34A
16 DS04-27407-1E
(Continued)
7
6
5
4
3
2
1
001234567
Ta = +85 °C
Ta = +25 °C
Ta = -40 °C
-40 -20 0 +20 +40 +60 +80 +100 +120
0
20
40
60
80
100
120
140
160
180
200
220
240
260
at VCC = 5.0 V
−40 −20 0 +20 +40 +60 +80 +100 +120
0
2
4
6
8
10
12
14
16
18
20
22
24
26
at VCC = 5.0 V
−40 −20 0 +20 +40 +60 +80 +100 +120
0
2
4
6
8
10
12
14
16
18
20
22
24
26
at VCC = 5.0 V
VRESET - VCC characteristics
Power voltage VCC (V)
Reset output voltage
VRESET (V)
Pull-up resistance: 100 kΩ
tPR - Ta characteristics
Operating ambient temperature Ta (°C)
Power-on reset hold time
tPR (ms)
tWR - Ta characteristics tWD - Ta characteristics
Operating ambient temperat ure Ta (°C) Operating ambient temperature Ta ( °C)
Watchdog timer reset time
tWR (ms)
Watchdog timer monitoring time
tWD (ms)
MB3793-34A
DS04-27407-1E 17
(Continued)
104
103
102
101
1
10 −1
10−410−310−210−1110
1102
Ta = −40 °C
Ta = +25 °C
Ta = +85 °C
103
102
101
1
10−1
10−410−310−210−1110
1102
10−2
Ta = −40 °C
Ta = +25 °C
Ta = +85 °C
103
102
101
1
10−1
10−410−310−210−1110
1
10−5
Ta = −40 °C
Ta = +25 °C
Ta = +85 °C
CTP = 0.01 μF
MB3793-34A
18 DS04-27407-1E
■APPLICATION EXAMPLE
1. Supply voltage monitor and watchdog timer
(1) 1-clock monitor
(2) 2-clock monitor
5
2
3
647
8
1
RESET VCC
RESET
CK
GND
GND
GND
CTW*CTP*
VCC
VCC
CTW
CTP CK1
CK2INH
MB3793
* : Use a capacitor with less leakage current.
Microprocessor
2
3
6
1
8
7
4
5
VCC
CTW*CTP*
GND
INH GND
VCC
CTP
CTW RESET
CK1
CK2
RESET
CK
GND
VCC RESET
CK
GND
VCC
MB3793
* : Use a capacitor with less leakage current.
Microprocessor1 Microprocessor2
MB3793-34A
DS04-27407-1E 19
2. Supply voltage monitor and watchdog timer stop
3. Setting of compulsory reset
GND
CTW*CTP*
VCC
RESET VCC
CK
GND
RESET VCC
CK
GND
HALT
HALT
5
2
3
647
8
1RESET
GND
VCC
INH
CTW
CK1
CK2
CTP
MB3793
* : Use a capacitor with less leakage current.
Microprocessor1 Microprocessor2
5
2
3
647
8
1
RESET VCC
RESET
CK
GND
GND
GND
CTW*CTP*
RESIN
10 kΩ
VCC
VCC
CTW
CTP CK1
CK2INH
MB3793
* : Use a capacitor with le ss leakage current.
It is possible for the RESET pin to fix to “L” if the CTP pin is short-circuited to GND.
Take care not to change the value of the CTP capacity because of the influence of Tr that
is used at the time.
Microprocessor
MB3793-34A
20 DS04-27407-1E
■USAGE PRECAUTION
1. Do not configure the IC over the maximum ratings
If the lC is used over the maximum ratings, the LSl may be permanently damaged.
It is preferable for the device to normally operate within the recommended usage conditions. Usage outside of
these conditions can have a bad effect on the reliability of the LSI.
2. Use the devices within recommended operating conditions
The recommended operating conditions are under which the LSl is guaranteed to operate.
The electrical ratings are guaranteed when the device is used within the recommended operating conditions
and under the conditions stated for each item.
3. Printed circuit board ground lines should be set up with consideration for common
impedance
4. Take appropriate measures against static electricity
• Containers f or se miconductor mate rials should hav e an ti-sta tic pro tec tion o r be ma de of co nduct ive ma terial.
• After mounting, printed circuit boards should be stored and shipped in conductive bags or containers.
• W ork platforms, tools, and instruments should be properly grounded.
• W orking personnel should be grounded with resistance of 250 kΩ to 1 MΩ between body and ground.
5. Do not apply negative voltages
The use of neg at ive vo lta ge s be low –0.3 V may create parasitic transistors on LSI lines, which can cause
malfunctions.
MB3793-34A
DS04-27407-1E 21
■ORDERING INFORMATION
Part number Package Remarks
MB3793-34APNF 8-pin plastic SOP
(FPT-8P-M02)
MB3793-34A
22 DS04-27407-1E
■RoHS Compliance Information of Lead (Pb) Free version
The LSI products of Fujitsu Microelectronics with “E1” are compliant with RoHS Directive , and has obser ved
the standard of lead, cadmium, mercury, Hexa v alent chromium, polybrominated biphenyls (PBB) , and polybro-
minated diphenyl ethers (PBDE).
The product that conforms to this standard is added “E1” at the end of the part number.
■LABELING SAMPLE (Lead free version)
■MARKING FORMAT (Lead Free version)
2006/03/01
ASSEMBLED IN JAPAN
G
QC PASS
(3N) 1MB123456P-789-GE1
1000
(3N)2 1561190005 107210
1,000
PCS
0605 - Z01A
1000
1/1
1561190005
MB123456P - 789 - GE1
MB123456P - 789 - GE1
MB123456P - 789 - GE1
Pb
Lead-free mark
JEITA logo JEDEC logo
The part number of a lead-free product has
the trailing characters “E1”. “ASSEMBLED IN CHINA” is printed on the label
of a product assembled in China.
3793AJ
XXXX
E1 XXX
Lead Free version
SOP-8
(FPT-8P-M02)
MB3793-34A
DS04-27407-1E 23
■MB3793-34APNF
RECOMMENDED CONDITIONS OF MOISTURE SENSITIVITY LEVEL
[Temperature Profile for FJ Standard IR Reflow]
(1) IR (infrar ed reflow)
(2) Manu al soldering (p artial heating meth od)
Conditions : Temperature 400 °C Max
Times : 5 s max/pin
Item Condition
Mounting Method IR (infrared reflow) , Manual soldering (partial heating method)
Mounting times 2 times
Storage period
Before opening Please use it within two years after
Manufacture.
From opening to the 2nd
reflow Less than 8 days
When the storage period after
opening was exceeded Please processes within 8 days
after baking (125 °C, 24H)
Storage conditions 5 °C to 30 °C, 70%RH or less (the lowest possible humidity)
260 °C
(e)
(d')
(d)
255 °C
170 °C
190 °C
RT (b)
(a)
(c)
to
Note : Temperature : the top of the package body
(a) Temperatu re Increase gradient : Average 1 °C/s to 4 °C/s
(b) Preliminary heating : Temperature 170 °C to 190 °C, 60s to 180s
(c) Temperatur e Increa se gradient : Average 1 °C/s to 4 °C/s
(d) Peak temperature : Temperature 260 °C Max; 255 °C or more, 10s or less
(d’) Main heating : Temperature 230 °C or more, 40s or less
or
Temperature 225 °C or more, 60s or less
or
Temperature 220 °C or more, 80s or less
(e) Cooling : Natural cooling or forced cooling
H rank : 260 °C Max
Main heating
MB3793-34A
24 DS04-27407-1E
■PACKAGE DIMENSIONS
Please check the latest package dimension at the following URL.
http://edevice.fujitsu.com/package/en-search/
8-pin plastic SOP Lead pitch 1.27 mm
Package width
×
package length
3.9 × 5.05 mm
Lead shape Gullwing
Sealing method Plastic mold
Mounting height 1.75 mm MAX
Weigh t 0.0 6 g
8-pin plastic SOP
(FPT-8P-M02)
(FPT-8P-M02)
C
2002 FUJITSU LIMITED F08004S-c-4-7
1.27(.050)
3.90±0.30 6.00±0.40
.199 –.008
+.010
–0.20
+0.25
5.05
0.13(.005)
M
(.154±.012) (.236±.016)
0.10(.004)
14
58
0.44±0.08
(.017±.003)
–0.07
+0.03
0.22
.009 +.001
–.003
45
˚
0.40(.016) "A" 0~8
˚
0.25(.010)
(Mounting height)
Details of "A" part
1.55±0.20
(.061±.008)
0.50±0.20
(.020±.008)
0.60±0.15
(.024±.006)
0.15±0.10
(.006±.004)
(Stand off)
0.10(.004)
*1
*2
Dimensions in mm (inches).
Note: The values in parentheses are reference values.
©2002-2008 FUJITSU MICROELECTRONICS LIMITED F08004S-c-4-8
Note 1) *1 : These dimensions include resin protrusion.
Note 2) *2 : These dimensions do not include resin protrusion.
Note 3) Pins width and pins thickness include plating thickness.
Note 4) Pins width do not include tie bar cutting remainder.
MB3793-34A
DS04-27407-1E 25
■CONTENTS
page
-DESCRIPTION .................................................................................................................................................... 1
-FEATURES .......................................................................................................................................................... 1
-APPLICATION ..................................................................................................................................................... 1
-PIN ASSIGNMENT ............................................................................................................................................. 2
-PIN DESCRIPTION ............................................................................................................................................ 2
-BLOCK DIAGRAM .............................................................................................................................................. 3
-BLOCK FUNCTIONS ......................................................................................................................................... 4
-ABSOLUTE MAXIMUM RATINGS ................................................................................................................... 5
-RECOMMENDED OPERATING CONDITIONS ............................................................................................ 5
-ELECTRICAL CHARACTERISTICS ....................... .............. ......................... .......................... ........................ 6
-TIMING DIAGRAM .............................................................................................................................................. 8
-OPERATION SEQUENCE ........... ......................... ..................................... ......................... ......................... ..... 13
-TYPICAL CHARACTERISTICS ............................................. ......................... ..................................... ............. 15
-APPLICATION EXAMPLE ................................................................................................................................. 18
-USAGE PRECAUTION ...................................................................................................................................... 20
-ORDERING INFORMATION ............. .............. .......................... ......................... .......................... ..................... 21
-RoHS Compliance Information of Lead (Pb) Free version ........................................................................... 22
-LABELING SAMPLE (Lead free version) ............... .............. ..................................... ......................... ............. 22
-MARKING FORMAT (Lead Free version) ....................................................................................................... 22
-MB3793-34APNF RECOMMENDED CONDITIONS OF MOISTURE SENSITIVITY LEVEL ................. 23
-PACKAGE DIMENSIONS .................................................................................................................................. 24
MB3793-34A
26 DS04-27407-1E
MEMO
MB3793-34A
DS04-27407-1E 27
MEMO
MB3793-34A
FUJITSU MICROELECTRONICS LIMITED
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F or further inf ormation please contact:
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