AT25256A-10CI-1.8 Atmel, AT25256A-10CI-1.8 Datasheet

IC EEPROM 256KBIT 20MHZ 8LAP

AT25256A-10CI-1.8

Manufacturer Part Number
AT25256A-10CI-1.8
Description
IC EEPROM 256KBIT 20MHZ 8LAP
Manufacturer
Atmel
Datasheet

Specifications of AT25256A-10CI-1.8

Format - Memory
EEPROMs - Serial
Memory Type
EEPROM
Memory Size
256K (32K x 8)
Speed
5MHz, 10MHz, 20MHz
Interface
SPI, 3-Wire Serial
Voltage - Supply
1.8 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Package / Case
8-LAP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Pin Configurations
Features
Description
The AT25128A/256A provides 131,072/262,144 bits of serial electrically-erasable pro-
grammable read only memory (EEPROM) organized as 16,384/32,768 words of 8 bits
each. The device is optimized for use in many industrial and commercial applications
where low-power and low-voltage operation are essential. The devices are available in
space saving 8-lead PDIP, 8-lead EIAJ SOIC, 8-lead JEDEC SOIC, 8-lead TSSOP
and 8-ball dBGA2 packages. In addition, the entire family is available in 2.7V (2.7V to
5.5V) and 1.8V (1.8V to 5.5V) versions.
The AT25128A/256A 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.
Pin Name
CS
SCK
SI
SO
GND
VCC
WP
HOLD
NC
DC
Serial Peripheral Interface (SPI) Compatible
Supports SPI Modes 0 (0,0) and 3 (1,1)
Low-voltage and Standard-voltage Operation
20 MHz Clock Rate (5V)
64-byte Page Mode and Byte Write Operation
Block Write Protection
Write Protect (WP) Pin and Write Disable Instructions for
Both Hardware and Software Data Protection
Self-timed Write Cycle (5 ms Max)
High-reliability
Automotive Grade, Extended Temperature and Lead-free/Halogen-free
Devices Available
8-lead PDIP, 8-lead EIAJ SOIC, 8-lead JEDEC SOIC, 8-lead TSSOP
and 8-ball dBGA2
– 2.7 (V
– 1.8 (V
– Protect 1/4, 1/2, or Entire Array
– Endurance: 100,000 Write Cycles
– Data Retention: >100 Years
CC
CC
Function
Chip Select
Serial Data Clock
Serial Data Input
Serial Data Output
Ground
Power Supply
Write Protect
Suspends Serial Input
No Connect
Don't Connect
= 2.7V to 5.5V)
= 1.8V to 5.5V)
Packages
GND
WP
SO
CS
HOLD
VCC
SCK
8-ball dBGA2
8-lead PDIP
Bottom View
SI
1
2
3
4
8
7
6
5
8
7
6
5
1
2
3
4
CS
SO
WP
GND
VCC
HOLD
SCK
SI
GND
WP
SO
GND
CS
WP
CS
SO
8-lead TSSOP
8-lead SOIC
1
2
3
4
1
2
3
4
8
7
6
5
8
7
6
5
VCC
HOLD
SCK
SI
VCC
HOLD
SCK
SI
SPI Serial
EEPROMs
128K (16,384 x 8)
256K (32,768 x 8)
AT25128A
AT25256A
Preliminary
Rev. 3368D–SEEPR–6/04
1

Related parts for AT25256A-10CI-1.8

AT25256A-10CI-1.8 Summary of contents

Page 1

... GND GND Bottom View 8-lead PDIP 8-lead SOIC VCC HOLD SCK WP GND GND SPI Serial EEPROMs 128K (16,384 x 8) 256K (32,768 x 8) AT25128A AT25256A Preliminary 1 8 VCC 2 7 HOLD 3 6 SCK VCC 2 7 HOLD 3 6 SCK Rev. 3368D–SEEPR–6/04 1 ...

Page 2

Absolute Maximum Ratings* Operating Temperature.................................. - +125 C Storage Temperature ..................................... - +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 Block ...

Page 3

Note: 1. This parameter is characterized and is not 100% tested. DC Characteristics Applicable over recommended operating range from - +125 +1.8V to +5.5V(unless otherwise noted Symbol Parameter V Supply ...

Page 4

... Hold to Output Low Hold to Output High Output Disable Time DIS t Write Cycle Time WC (1) Endurance 5.0V Page Mode Note: 1. This parameter is characterized and is not 100% tested. Contact Atmel for further information. AT25128A/256A [Preliminary - - +125 Voltage Min 4.5 - 5.5 20 2.7 - 5.5 40 1 ...

Page 5

Serial Interface MASTER: The device that generates the serial clock. Description SLAVE: Because the Serial Clock pin (SCK) is always an input, the AT25128A/256A always operates as a slave. TRANSMITTER/RECEIVER: The AT25128A/256A has seperate pins designated for data transmission (SO) ...

Page 6

SPI Serial Interface AT25128A/256A [Preliminary] 6 AT25128A/256A 3368D–SEEPR–6/04 ...

Page 7

... Bit 7 (WPEN) See Table 5. Bits are 1s during an internal write cycle. Operation Set Write Enable Latch Reset Write Enable Latch Read Status Register Write Status Register Read Data from Memory Array Write Data to Memory Array Bit 4 Bit 3 Bit 2 Bit 1 X BP1 BP0 WEN ...

Page 8

... Protected Unprotected Blocks Blocks Protected Protected Protected Writable Protected Protected Protected Writable Protected Protected Protected Writable AT25256A None 6000 - 7FFF 4000 - 7FFF 0000 - 7FFF Status Register Protected Writable Protected Protected Protected Writable 3368D–SEEPR–6/04 ...

Page 9

... NOTE: 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 fall- ing edge is required to re-initiate the serial communication. Table 6. Address Key 3368D–SEEPR–6/04 AT25128A/256A [Preliminary] Address AT25128A Don’t Care Bits A AT25256A - ...

Page 10

Timing Diagrams (for SPI Mode 0 (0, 0)) Synchronous Data Timing CSS V IH SCK HI WREN Timing WRDI Timing AT25128A/256A [Preliminary] ...

Page 11

RDSR Timing CS 0 SCK SI INSTRUCTION HIGH IMPEDANCE SO WRSR Timing READ Timing 3368D–SEEPR–6/04 AT25128A/256A [Preliminary MSB DATA OUT ...

Page 12

WRITE Timing HOLD Timing CS SCK HOLD SO AT25128A/256A [Preliminary 3368D–SEEPR–6/04 ...

Page 13

AT25128A Ordering Information Ordering Code AT25128A-10PI-2.7 AT25128AN-10SI-2.7 AT25128AW-10SI-2.7 AT25128AU2-10UI-2.7 AT25128A-10TI-2.7 AT25128A-10PI-1.8 AT25128AN-10SI-1.8 AT25128AW-10SI-1.8 AT25128AU2-10UI-1.8 AT25128A-10TI-1.8 AT25128AN-10SU-2.7 AT25128AN-10SU-1.8 AT25128A-10TU-2.7 AT25128A-10TU-1.8 AT25128AN-10SE-2.7 AT25128AN-10SQ-2.7 Note: For 2.7V devices used in the 4.5V to 5.5V range, please refer to performance values in the AC ...

Page 14

... Low-voltage (2.7V to 5.5V) -1.8 Low-voltage (1.8V to 5.5V) AT25256A Ordering Information Ordering Code AT25256A-10PI-2.7 AT25256AN-10SI-2.7 AT25256AW-10SI-2.7 AT25256AU2-10UI-2.7 AT25256A-10TI-2.7 AT25256A-10PI-1.8 AT25256AN-10SI-1.8 AT25256AW-10SI-1.8 AT25256AU2-10UI-1.8 AT25256A-10TI-1.8 AT25256AN-10SU-2.7 AT25256AN-10SU-1.8 AT25256A-10TU-2.7 AT25256A-10TU-1.8 AT25256AN-10SE-2.7 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. ...

Page 15

Packaging Information 8P3 – PDIP Top View PLCS Side View 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 ...

Page 16

JEDEC SOIC Top View e Side View Note: These drawings are for general information only. Refer to JEDEC Drawing MS-012, Variation AA for proper dimensions, tolerances, datums, etc. 1150 E. Cheyenne Mtn. Blvd. Colorado Springs, CO 80906 R ...

Page 17

EIAJ SOIC 1 N Top View e D Side View Notes: 1. This drawing is for general information only; refer to EIAJ Drawing EDR-7320 for additional information. 2. Mismatch of the upper and lower dies and resin burrs ...

Page 18

A1 BALL PAD CORNER e (e1) 1. Dimension 'b' is measured at the maximum solder ball diameter. This drawing is for general information only. 1150 E. Cheyenne Mtn. Blvd. Colorado Springs, CO 80906 R AT25128A/256A [Preliminary] 18 ...

Page 19

TSSOP Pin 1 indicator this corner N Top View Side View Notes: 1. This drawing is for general information only. Refer to JEDEC Drawing MO-153, Variation AA, for proper dimensions, tolerances, datums, ...

Page 20

... No licenses to patents or other intellectual property of Atmel are granted by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel’s products are not authorized for use as critical components in life support devices or systems. ...

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