AT25010N-10SJ-2.7 - Atmel Corporation

Features

•Serial Peripheral Interface (SPI) Compatible

•Supports SPI Modes 0 (0,0) and 3 (1,1)

•Low-voltage and Standard-voltage Operation

–2.7(V

CC =2.7Vto5.5V)

•3.0 MHz Clock Rate (5V)

•8-byte Page Mode

•Block Write Protection

– Protect 1/4, 1/2, or Entire Array

•Write Protect (WP) Pin and Write Disable Instructions for

Both Hardware and Software Data Protection

•Self-timed Write Cycle (10 ms max)

•High Reliability

– Endurance: One Million Write Cycles

– Data Retention: 100 Years

•Automotive Grade, Extended Temperature and Lead-Free Devices Available

•8-lead PDIP, 8-lead JEDEC SOIC, 8-lead MAP and 8-lead TAP Packages

Description

The AT25010/020/040 provides 1024/2048/4096 bits of serial electrically erasable

programmable read only memory (EEPROM) organized as 128/256/512 words of 8

bits each. The device is optimized for use in many industrial and commercial applica-

tions where low-power and low voltage operation are essential. The AT25010/020/040

is available in space saving 8-lead PDIP, 8-lead JEDEC SOIC, 8-lead MAP and 8-lead

TAP packages.

The AT25010/020/040 is enabled through the Chip Select pin (CS) and accessed via a

3-wire interface consisting of Serial Data Input (SI), Serial Data Output (SO), and

Serial Clock (SCK). All programming cycles are completely self-timed, and no sepa-

rate ERASE cycle is required before WRITE.

BLOCK WRITE protection is enabled by programming the status register with one of

four blocks of write protection. Separate program enable and program disable instruc-

tions are provided for additional data protection. Hardware data protection is provided

via the WP pin to protect against inadvertent write attempts. The HOLD pin may be

used to suspend any serial communication without resetting the serial sequence.

SPI Serial

EEPROMs

1K(128x8)

2K(256x8)

4K(512x8)

AT25010

AT25020

AT25040

Pin Configurations

Pin Name Function

CS Chip Select

SCK Serial Data Clock

SI Serial Data Input

SO Serial Data Output

GND Ground

VCC Power Supply

WP Write Protect

HOLD Suspends Serial Input

8-lead PDIP

GND

VCC

HOLD

SCK

8-lead SOIC

GND

VCC

HOLD

SCK

Rev. 0606K–SEEPR–01/03

8-lead MAP/TAP

Bottom View

VCC

HOLD

SCK

GND

2AT25010/020/040

0606K–SEEPR–01/03

Block Diagram

Absolute Maximum Ratings*

Operating Temperature................................. -55°Cto+125°C*NOTICE: Stresses beyond those listed under “Absolute

Maximum Ratings”may cause permanent dam-

age to the device. This is a stress rating only and

functional operation of the device at these or any

other conditions beyond those indicated in the

operational sections of this specification is not

implied. Exposure to absolute maximum rating

conditions for extended periods may affect

device reliability.

Storage Temperature .................................... -65°Cto+150°C

Voltage on Any Pin

with Respect to Ground ....................................-1.0V to + 7.0V

Maximum Operating Voltage .......................................... 6.25V

DC Output Current........................................................ 5.0 mA

AT25010/020/040

0606K–SEEPR–01/03

Note: 1. This parameter is characterized and is not 100% tested.

Note: 1. This parameter is preliminary and Atmel may change the specifications upon further characterization.

2. VIL min and VIH max are reference only and are not tested.

Pin Capacitance(1)

Applicable over recommended operating range from TA=25°C, f = 1.0 MHz, VCC = +5.0V (unless otherwise noted).

Symbol Test Conditions Max Units Conditions

COUT Output Capacitance (SO) 8 pF VOUT =0V

CIN Input Capacitance (CS,SCK,SI,WP,HOLD)6pFV

IN =0V

DC Characteristics

Applicable over recommended operating range from: TAI =-40°Cto+85°C, VCC = +2.7V to +5.5V, TAE =-40°Cto+125°C,

VCC = +2.7V to +5.5V (unless otherwise noted).

Symbol Parameter Test Condition Min Max Units

VCC1 Supply Voltage 2.7 5.5 V

VCC2 Supply Voltage 4.5 5.5 V

ICC1 Supply Current VCC = 5.0V at 1 MHz, SO = Open, Read 3.0 mA

ICC2 Supply Current VCC = 5.0V at 2 MHz, SO = Open,

Read, Write 6.0 mA

ISB1 Standby Current VCC =2.7V CS=V

CC 5µA

ISB2 Standby Current VCC =5.0V CS=V

CC 10 µA

IIL Input Leakage VIN =0VtoV

CC -0.6 3.0 µA

IOL Output Leakage VIN =0VtoV

CC,T

AC =0°Cto70°C -0.6 3.0 µA

VIL(2) Input Low Voltage -0.6 VCC x0.3 V

VIH(2) Input High Voltage VCC x0.7 V

CC +0.5 V

VOL1 Output Low Voltage 4.5V ≤VCC ≤ 5.5V IOL =2.0mA 0.4 V

VOH1 Output High Voltage IOH =-1.0mA V

CC -0.8 V

VOL2 Output Low Voltage

2.7V ≤VCC ≤ 5.5V

IOL =0.15mA 0.2 V

VOH2 Output High Voltage IOH = -100 µA VCC -0.2 V

4AT25010/020/040

0606K–SEEPR–01/03

Note: 1. This parameter is characterized and is not 100% tested.

AC Characteristics

Applicable over recommended operating range from TAI =-40°Cto+85°C, TAE =-40°C to +125°C, VCC = As Specified,

CL = 1 TTL Gate and 100 pF (unless otherwise noted).

Symbol Parameter Voltage Min Max Units

fSCK SCK Clock Frequency 4.5 - 5.5

2.7 - 5.5

3.0

2.1 MHz

tRI Input Rise Time 4.5 - 5.5

2.7 - 5.5

2µs

tFI Input Fall Time 4.5 - 5.5

2.7 - 5.5

2µs

tWH SCK High Time 4.5 - 5.5

2.7 - 5.5

133

200 ns

tWL SCK Low Time 4.5 - 5.5

2.7 - 5.5

133

200 ns

tCS CS High Time 4.5 - 5.5

2.7 - 5.5

250

250 ns

tCSS CS Setup Time 4.5 - 5.5

2.7 - 5.5

250

250 ns

tCSH CS Hold Time 4.5 - 5.5

2.7 - 5.5

250

250 ns

tSU Data In Setup Time 4.5 - 5.5

2.7 - 5.5

50 ns

tHData In Hold Time 4.5 - 5.5

2.7 - 5.5

100 ns

tHD Hold Setup Time 4.5 - 5.5

2.7 - 5.5

100

100 ns

tCD Hold Hold Time 4.5 - 5.5

2.7 - 5.5

200

200 ns

tVOutput Valid 4.5 - 5.5

2.7 - 5.5

133

200 ns

tHO Output Hold Time 4.5 - 5.5

2.7 - 5.5

0ns

tLZ Hold to Output Low Z 4.5 - 5.5

2.7 - 5.5

100

100 ns

tHZ Hold to Output High Z 4.5 - 5.5

2.7 - 5.5

100

100 ns

tDIS Output Disable Time 4.5 - 5.5

2.7 - 5.5

250

500 ns

tWC WriteCycleTime 4.5 - 5.5

2.7 - 5.5

10 ms

Endurance(1) 5.0V, 25°C, Page Mode 1M Write Cycles

AT25010/020/040

0606K–SEEPR–01/03

Serial Interface

Description

MASTER: The device that generates the serial clock.

SLAVE: Because the Serial Clock pin (SCK) is always an input, the AT25010/020/040

always operates as a slave.

TRANSMITTER/RECEIVER: The AT25010/020/040 has separate pins designated for

data transmission (SO) and reception (SI).

MSB: The Most Significant Bit (MSB) is the first bit transmitted and received.

SERIAL OP-CODE: After the device is selected with CS going low, the first byte will be

received. This byte contains the op-code that defines the operations to be performed.

The op-code also contains address bit A8 in both the READ and WRITE instructions.

INVALID OP-CODE: If an invalid op-code is received, no data will be shifted into the

AT25010/020/040, and the serial output pin (SO) will remain in a high impedance state

until the falling edge of CS is detected again. This will reinitialize the serial

communication.

CHIP SELECT: The AT25010/020/040 is selected when the CS pin is low. When the

device is not selected, data will not be accepted via the SI pin, and the serial output pin

(SO) will remain in a high impedance state.

HOLD: The HOLD pinisusedinconjunctionwiththeCSpin to select the

AT25010/020/040. When the device is selected and a serial sequence is underway,

HOLD can be used to pause the serial communication with the master device without

resetting the serial sequence. To pause, the HOLD pin must be brought low while the

SCK pin is low. To resume serial communication, the HOLD pin is brought high while the

SCK pin is low (SCK may still toggle during HOLD). Inputs to the SI pin will be ignored

while the SO pin is in the high impedance state.

WRITE PROTECT: The write protect pin (WP) will allow normal read/write operations

when held high. When the WP pin is brought low, all write operations are inhibited.

WP going low while CS is still low will interrupt a write to the AT25010/020/040. If the

internal write cycle has already been initiated, WP going low will have no effect on any

write operation.

6AT25010/020/040

0606K–SEEPR–01/03

SPI Serial Interface

Functional

Description

The AT25010/020/040 is designed to interface directly with the synchronous serial

peripheral interface (SPI) of the 6805 and 68HC11 series of microcontrollers.

The AT25010/020/040 utilizes an 8-bit instruction register. The list of instructions and

their operation codes are contained in Table 1. All instructions, addresses, and data are

transferred with the MSB first and start with a high-to-low CS transition.

Note: “A”represents MSB address bit A8.

Table 1. Instruction Set for the AT25010/020/040

Instruction Name Instruction Format Operation

WREN 0000 X110 Set Write Enable Latch

WRDI 0000 X100 Reset Write Enable Latch

RDSR 0000 X101 Read Status Register

WRSR 0000 X001 Write Status Register

READ 0000 A011 Read Data from Memory Array

WRITE 0000 A010 Write Data to Memory Array

AT25010/020/040

0606K–SEEPR–01/03

WRITE ENABLE (WREN): The device will power up in the write disable state when VCC

is applied. All programming instructions must therefore be preceded by a Write Enable

instruction. The WP pin must be held high during a WREN instruction.

WRITE DISABLE (WRDI): To protect the device against inadvertent writes, the Write

Disable instruction disables all programming modes. The WRDI instruction is indepen-

dent of the status of the WP pin.

READ STATUS REGISTER (RDSR): The Read Status Register instruction provides

access to the status register. The READY/BUSY and Write Enable status of the device

can be determined by the RDSR instruction. Similarly, the Block Write Protection bits

indicate the extent of protection employed. These bits are set by using the WRSR

instruction.

WRITE STATUS REGISTER (WRSR): The WRSR instruction allows the user to select

one of four levels of protection. The AT25010/020/040 is divided into four array seg-

ments. Top quarter (1/4), Top half (1/2), or all of the memory segments can be

protected. Any of the data within any selected segment will therefore be READ only. The

block write protection levels and corresponding status register control bits are shown in

Table 4.

The two bits, BP1 and BP0 are nonvolatile cells that have the same properties and func-

tions as the regular memory cells (e.g. WREN, tWC,RDSR).

Table 2. Status Register Format

Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

X X X X BP1 BP0 WEN RDY

Table 3. Read Status Register Bit Definition

Bit Definition

Bit 0 (RDY)Bit 0 = 0 (RDY) indicates the device is READY. Bit 0 = 1 indicates the

writecycleisinprogress.

Bit 1 (WEN) Bit 1 = 0 indicates the device

is not

WRITE ENABLED. Bit 1 = 1 indicates

the device is WRITE ENABLED.

Bit 2 (BP0) See Table 4.

Bit 3 (BP1) See Table 4.

Bits 4-7 are 0s when device is not in an internal write cycle.

Bits 0-7 are 1s during an internal write cycle.

Table 4. Block Write Protect Bits

Level

Status Register Bits Array Addresses Protected

BP1 BP0 AT25010 AT25020 AT25040

000NoneNoneNone

1 (1/4) 0 1 60-7F C0-FF 180-1FF

2 (1/2) 1 0 40-7F 80-FF 100-1FF

3 (All) 1 1 00-7F 00-FF 000-1FF

8AT25010/020/040

0606K–SEEPR–01/03

READ SEQUENCE (READ): Reading the AT25010/020/040 via the SO (Serial Output)

pin requires the following sequence. After the CS line is pulled low to select a device,

the READ op-code (including A8) is transmitted via the SI line followed by the byte

address to be read (A7-A0). Upon completion, any data on the SI line will be ignored.

The data (D7-D0) at the specified address is then shifted out onto the SO line. If only

one byte is to be read, the CS line should be driven high after the data comes out. The

READ sequence can be continued since the byte address is automatically incremented

and data will continue to be shifted out. When the highest address is reached, the

address counter will roll over to the lowest address allowing the entire memory to be

read in one continuous READ cycle.

WRITE SEQUENCE (WRITE): In order to program the AT25010/020/040, the Write

Protect pin (WP) must be held high and two separate instructions must be executed.

First, the device must be write enabled via the Write Enable (WREN) Instruction. Then

a Write (WRITE) Instruction may be executed. Also, the address of the memory loca-

tion(s) to be programmed must be outside the protected address field location selected

by the Block Write Protection Level. During an internal write cycle, all commands will be

ignored except the RDSR instruction.

A Write Instruction requires the following sequence. After the CS line is pulled low to

selectthedevice,theWRITEop-code(includingA8)istransmittedviatheSIlinefol-

lowed by the byte address (A7-A0) and the data (D7-D0) to be programmed.

Programming will start after the CS pin is brought high. (The LOW to High transition of

the CS pin must occur during the SCK low time immediately after clocking in the D0

(LSB) data bit.

The READY/BUSY status of the device can be determined by initiating a READ STA-

TUS REGISTER (RDSR) Instruction. If Bit 0 = 1, the WRITE cycle is still in progress. If

Bit 0 = 0, the WRITE cycle has ended. Only the READ STATUS REGISTER instruction

is enabled during the WRITE programming cycle.

The AT25010/020/040 is capable of an 8-byte PAGE WRITE operation. After each byte

of data is received, the three low order address bits are internally incremented by one;

the six high order bits of the address will remain constant. If more than 8 bytes of data

are transmitted, the address counter will roll over and the previously written data will be

overwritten. The AT25010/020/040 is automatically returned to the write disable state at

the completion of a WRITE cycle.

NOTE: If the WP pin is brought low or if the device is not Write enabled (WREN), the

device will ignore the Write instruction and will return to the standby state, when CS is

brought high. A new CS falling edge is required to re-initiate the serial communication.

AT25010/020/040

0606K–SEEPR–01/03

Timing Diagrams

Synchronous Data Timing (for mode 0)

WREN Timing

WRDI Timing

HI-Z HI-Z

VALID IN

DIS

SCK

CSH

CSS

10 AT25010/020/040

0606K–SEEPR–01/03

RDSR Timing

WRSR Timing

READ Timing

SCK

01234567891011121314

INSTRUCTION

SO 76543210

DATA OUT

MSB

HIGH IMPEDANCE

SCK

01234567891011121314

INSTRUCTION

76543210

DATA IN

HIGH IMPEDANCE

AT25010/020/040

0606K–SEEPR–01/03

WRITE Timing

HOLD Timing

SCK

01234567891011121314

INSTRUCTION

76543210

DATA IN

HIGH IMPEDANCE

15 16 17 18 19 20 21 22

801234567

9TH BIT OF ADDRESS

BYTE ADDRESS

SCK

HOLD

tCD

tHD

tHZ

tLZ

tCD

tHD

12 AT25010/020/040

0606K–SEEPR–01/03

Note: For 2.7V devices used in the 4.5V to 5.5V range, please refer to performance values in the AC and DC Characteristics tables.

AT25010 Ordering Information

Ordering Code Package Operation Range

AT25010-10PI-2.7

AT25010N-10SI-2.7

AT25010Y1-10YI-2.7

AT25010Y2-10YI-2.7

8P3

8S1

8Y1

8Y2

Industrial

(-40°Cto85°C)

AT25010N-10SJ-2.7 8S1 Lead-Free/Industrial Temperature

(-40°Cto85°C)

AT25010N-10SE-2.7 8S1 High Grade/Extended Temperature

(-40°C to 125°C)

Package Type

8P3 8-lead, 0.300" Wide, Plastic Dual Inline Package (PDIP)

8S1 8-lead, 0.150" Wide, Plastic Gull Wing Small Outline Package (JEDEC SOIC)

8Y1 8-lead, 4.90 x 3.00 mm Body, Dual Footprint, Non-leaded, Miniature Array Package (MAP)

8Y2 8-lead, 6.40 x 3.00 mm Body, Dual Footprint, Non-leaded, Thin Array Package (TAP)

Options

-2.7 Low Voltage (2.7V to 5.5V)

AT25010/020/040

0606K–SEEPR–01/03

Note: For 2.7V devices used in the 4.5V to 5.5V range, please refer to performance values in the AC and DC Characteristics tables.

AT25020 Ordering Information

Ordering Code Package Operation Range

AT25020-10PI-2.7

AT25020N-10SI-2.7

AT25020Y1-10YI-2.7

AT25020Y2-10YI-2.7

8P3

8S1

8Y1

8Y2

Industrial

(-40°Cto85°C)

AT25020N-10SJ-2.7 8S1 Lead-Free/Industrial Temperature

(-40°Cto85°C)

AT25020N-10SE-2.7 8S1 High Grade/Extended Temperature

(-40°C to 125°C)

Package Type

8P3 8-lead, 0.300" Wide, Plastic Dual Inline Package (PDIP)

8S1 8-lead, 0.150" Wide, Plastic Gull Wing Small Outline Package (JEDEC SOIC)

8Y1 8-lead, 4.90 x 3.00 mm Body, Dual Footprint, Non-leaded, Miniature Array Package (MAP)

8Y2 8-lead, 6.40 x 3.00 mm Body, Dual Footprint, Non-leaded, Thin Array Package (TAP)

Options

-2.7 Low Voltage (2.7V to 5.5V)

14 AT25010/020/040

0606K–SEEPR–01/03

Note: For 2.7V devices used in the 4.5V to 5.5V range, please refer to performance values in the AC and DC Characteristics tables.

AT25040 Ordering Information

Ordering Code Package Operation Range

AT25040-10PI-2.7

AT25040N-10SI-2.7

AT25040Y1-10YI-2.7

AT25040Y2-10YI-2.7

8P3

8S1

8Y1

8Y2

Industrial

(-40°Cto85°C)

AT25040N-10SJ-2.7 8S1 Lead-Free/Industrial Temperature

(-40°Cto85°C)

AT25040N-10SE-2.7 8S1 High Grade/Extended Temperature

(-40°C to 125°C)

Package Type

8P3 8-lead, 0.300" Wide, Plastic Dual Inline Package (PDIP)

8S1 8-lead, 0.150" Wide, Plastic Gull Wing Small Outline Package (JEDEC SOIC)

8Y1 8-lead, 4.90 x 3.00 mm Body, Dual Footprint, Non-leaded, Miniature Array Package (MAP)

8Y2 8-lead, 6.40 x 3.00 mm Body, Dual Footprint, Non-leaded, Thin Array Package (TAP)

Options

-2.7 Low Voltage (2.7V to 5.5V)

AT25010/020/040

0606K–SEEPR–01/03

Packaging Information

8P3 – PDIP

2325 Orchard Parkway

San Jose, CA 95131

TITLE DRAWING NO.

REV.

8P3, 8-lead, 0.300" Wide Body, Plastic Dual

In-line Package (PDIP)

01/09/02

8P3 B

A2 A

4 PLCS

Top View

Side View

End View

COMMON DIMENSIONS

(Unit of Measure = inches)

SYMBOL MIN NOM MAX NOTE

Notes: 1. This drawing is for general information only; refer to JEDEC Drawing MS-001, Variation BA for additional information.

2. Dimensions A and L are measured with the package seated in JEDEC seating plane Gauge GS-3.

3. D, D1 and E1 dimensions do not include mold Flash or protrusions. Mold Flash or protrusions shall not exceed 0.010 inch.

4. E and eA measured with the leads constrained to be perpendicular to datum.

5. Pointed or rounded lead tips are preferred to ease insertion.

6. b2 and b3 maximum dimensions do not include Dambar protrusions. Dambar protrusions shall not exceed 0.010 (0.25 mm).

A 0.210 2

A2 0.115 0.130 0.195

b 0.014 0.018 0.022 5

b2 0.045 0.060 0.070 6

b3 0.030 0.039 0.045 6

c 0.008 0.010 0.014

D 0.355 0.365 0.400 3

D1 0.005 3

E 0.300 0.310 0.325 4

E1 0.240 0.250 0.280 3

e 0.100 BSC

eA 0.300 BSC 4

L 0.115 0.130 0.150 2

16 AT25010/020/040

0606K–SEEPR–01/03

8S1 – JEDEC SOIC

2325 Orchard Parkway

San Jose, CA 95131

TITLE DRAWING NO.

REV.

Note:

10/10/01

8S1, 8-lead (0.150" Wide Body), Plastic Gull Wing

Small Outline (JEDEC SOIC) 8S1 A

Top View

End View

Side View

COMMON DIMENSIONS

(Unit of Measure = mm)

SYMBOL MIN NOM MAX NOTE

This drawing is for general information only. Refer to JEDEC Drawing MS-012 for proper dimensions, tolerances, datums, etc.

A – – 1.75

B – – 0.51

C – – 0.25

D – – 5.00

E – – 4.00

e 1.27 BSC

H – – 6.20

L – – 1.27

AT25010/020/040

0606K–SEEPR–01/03

8Y1 – MAP

A––0.90

A1 0.00 –0.05

D 4.70 4.90 5.10

E 2.80 3.00 3.20

D1 0.85 1.00 1.15

E1 0.85 1.00 1.15

b 0.25 0.30 0.35

e 0.65 TYP

L 0.50 0.60 0.70

PIN 1 INDEX AREA

A1 b

876

PIN 1 INDEX AREA

1234

2325 Orchard Parkway

San Jose, CA 95131

TITLE DRAWING NO.

REV.

8Y1, 8-lead (4.90 x 3.00 mm Body) MSOP Array Package

(MAP) Y1 B

8Y1

7/25/02

COMMON DIMENSIONS

(Unit of Measure = mm)

SYMBOL

MIN NOM MAX

NOTE

18 AT25010/020/040

0606K–SEEPR–01/03

8Y2 – TAP

2325 Orchard Parkway

San Jose, CA 95131

TITLE DRAWING NO.

REV.

8Y2, 8-lead (6.40 x 3.00 mm Body) TSSOP Array Package

(TAP) Y2 A

8Y2

7/25/02

PIN 1 INDEX AREA

COMMON DIMENSIONS

(Unit of Measure = mm)

SYMBOL

MIN NOM MAX NOTE

A––0.90

A1 0.00 –0.05

D 6.20 6.40 6.60

E 2.80 3.00 3.20

D1 2.85 3.00 3.15

E1 0.85 1.00 1.15

b 0.20 0.25 0.30

e 0.65 TYP

L 0.30 0.40 0.50

PIN 1 INDEX AREA

Printed on recycled paper.

0606K–SEEPR–01/03 xM

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