AT25256W-10SI Atmel, AT25256W-10SI Datasheet

IC EEPROM 256KBIT 3MHZ 8SOIC

AT25256W-10SI

Manufacturer Part Number
AT25256W-10SI
Description
IC EEPROM 256KBIT 3MHZ 8SOIC
Manufacturer
Atmel
Datasheet

Specifications of AT25256W-10SI

Format - Memory
EEPROMs - Serial
Memory Type
EEPROM
Memory Size
256K (32K x 8)
Speed
3MHz
Interface
SPI, 3-Wire Serial
Voltage - Supply
4.5 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Package / Case
8-SOIC (5.3mm Width), 8-SOP, 8-SOEIAJ
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Features
Description
The AT25128/256 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 (AT25128/256), 8-lead EIAJ SOIC (AT25128/256), 8-lead
and 16-lead JEDEC SOIC (AT25128), 14-lead TSSOP (AT25128), 20-lead TSSOP
(AT25128/256), and 8-lead Leadless Array (AT25256) 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.
Table 1. Pin Configuration
*Note: Pins 3, 4 and 17, 18 are internally connected for 14-lead TSSOP socket compatibility.
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
3 MHz Clock Rate
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 Typical)
High-reliability
Automotive Grade, Extended Temperature and Lead-Free Devices Available
8-lead PDIP, 8-lead EIAJ SOIC, 8-lead and 16-lead JEDEC SOIC, 14-lead and 20-lead
TSSOP, and 8-lead Leadless Array Packages
– 2.7 (V
– 1.8 (V
– Protect 1/4, 1/2, or Entire Array
– Endurance: 100,000 Write Cycles
– Data Retention: >200 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)
GND
WP
SO
NC
NC
NC
CS
GND
GND
WP
WP
SO
NC
NC
NC
NC
CS
SO
CS
14-lead TSSOP
8-lead PDIP
16-lead SOIC
1
2
3
4
5
6
7
1
2
3
4
5
6
7
8
1
2
3
4
8
7
6
5
14
13
12
11
10
9
8
16
15
14
13
12
11
10
9
VCC
HOLD
SCK
SI
VCC
HOLD
NC
NC
NC
SCK
SI
VCC
HOLD
NC
NC
NC
NC
SCK
SI
GND
WP
NC
CS
SO
SO
NC
NC
DC
NC
GND
8-lead Leadless Array
WP
SO
CS
HOLD
VCC
SCK
20-lead TSSOP*
SI
Bottom View
8-lead SOIC
1
2
3
4
5
6
7
8
9
10
1
2
3
4
8
7
6
5
20
19
18
17
16
15
14
13
12
11
8
7
6
5
1
2
3
4
CS
SO
WP
GND
VCC
HOLD
SCK
SI
NC
VCC
HOLD
HOLD
NC
NC
SCK
SI
DC
NC
Notes:
SPI Serial
EEPROMs
128K (16,384 x 8)
256K (32,768 x 8)
AT25128
AT25256
1. This device is not rec-
2. This device is not rec-
ommended
designs. Please refer
to AT25128A.
ommended
designs. Please refer
to AT25256A.
Rev. 0872O–SEEPR–03/05
(1)
(2)
for
for
new
new
1

Related parts for AT25256W-10SI

AT25256W-10SI Summary of contents

Page 1

... Description The AT25128/256 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 ...

Page 2

Absolute Maximum Ratings* Operating Temperature..................................–55°C to +125°C Storage Temperature .....................................–65°C to +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 Figure 1. Block Diagram AT25128/256 2 ...

Page 3

Table 2. Pin Capacitance Applicable over recommended operating range from T Symbol Test Conditions C Output Capacitance (SO) OUT C Input Capacitance (CS, SCK, SI, WP, HOLD) IN Note: 1. This parameter is characterized and is not 100% tested. ...

Page 4

Table 4. AC Characteristics Applicable over recommended operating range from TTL Gate and 100 pF (unless otherwise noted) Symbol Parameter f SCK Clock Frequency SCK t Input Rise Time RI t Input Fall Time FI t ...

Page 5

... Output Disable Time DIS t Write Cycle Time WC (1) Endurance 5.0V, 25°C, Page Mode Note: 1. This parameter is characterized and is not 100% tested. Contact Atmel for further information. Serial Interface Description 0872O–SEEPR–03/05 = 40° 85°C, T – AI Voltage 4.5 – 5.5 2.7 – 5.5 1.8 – ...

Page 6

... X100 RDSR 0000 X101 WRSR 0000 X001 READ 0000 X011 WRITE 0000 X010 AT25128/256 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 0872O–SEEPR–03/05 ...

Page 7

... WRITE STATUS REGISTER (WRSR): The WRSR instruction allows the user to select one of four levels of protection. The AT25128/256 is divided into four array segments. 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 pro- tection levels and corresponding status register control bits are shown in Table 8 ...

Page 8

... 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 AT25128/256, two separate instructions must be executed ...

Page 9

Timing Diagrams (for SPI Mode 0 (0, 0)) Figure 3. Synchronous Data Timing CSS V IH SCK HI 0872O–SEEPR–03/05 The AT25128/256 is ...

Page 10

Figure 4. WREN Timing Figure 5. WRDI Timing Figure 6. RDSR Timing CS 0 SCK SI INSTRUCTION HIGH IMPEDANCE SO AT25128/256 MSB ...

Page 11

Figure 7. WRSR Timing Figure 8. READ Timing Figure 9. WRITE Timing 0872O–SEEPR–03/05 AT25128/256 11 ...

Page 12

Figure 10. HOLD Timing CS SCK HOLD SO AT25128/256 0872O–SEEPR–03/05 ...

Page 13

AT25128 Ordering Information (2) Ordering Code AT25128-10PI-2.7 AT25128N-10SI-2.7 AT25128W-10SI-2.7 AT25128N1-10SI-2.7 AT25128T1-10TI-2.7 AT25128-10PI-1.8 AT25128N-10SI-1.8 AT25128W-10SI-1.8 AT25128N1-10SI-1.8 AT25128T1-10TI-1.8 AT25128N-10SJ-2.7 AT25128N-10SJ-1.8 AT25128N-10SE-2.7 Notes: 1. This device is not recommended for new designs. Please refer to AT25128A. 2. For 2.7V devices used in ...

Page 14

... Ordering Information (2) Ordering Code AT25256-10PI-2.7 AT25256W-10SI-2.7 AT25256-10CI-2.7 AT25256T2-10TI-2.7 AT25256-10PI-1.8 AT25256W-10SI-1.8 AT25256-10CI-1.8 AT25256T2-10TI-1.8 AT25256W-10SJ-2.7 AT25256W-10SJ-1.8 AT25256W-10SE-2.7 Notes: 1. This device is not recommended for new designs. Please refer to AT25256A. 2. 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

LAP Marked Pin1 Indentifier E Top View 0.10 mm TYP Bottom View Note: 1. Metal Pad Dimensions. 2. All exposed metal area shall have the following finished platings. Ni: 0.0005 to 0.015 ...

Page 19

JEDEC SOIC 3 2 Top View e D Side View End View Notes: 1. This drawing is for general information only; refer to JEDEC Drawing MS-012 for proper dimensions, tolerances, datums, etc. 2. Dimension D ...

Page 20

TSSOP Top View D A Side View Notes: 1. This drawing is for general information only. Please refer to JEDEC Drawing MO-153, Variation AB-1, for additional information. 2. Dimension D does not include mold ...

Page 21

TSSOP Top View A Side View Notes: 1. This drawing is for general information only. Please refer to JEDEC Drawing MO-153, Variation AC, for additional information. 2. Dimension D does not include mold Flash, protrusions ...

Page 22

... Disclaimer: The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products. EXCEPT AS SET FORTH IN ATMEL’S TERMS AND CONDI- TIONS OF SALE LOCATED ON ATMEL’S WEB SITE, ATMEL ASSUMES NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS, IMPLIED OR STATUTORY WARRANTY RELATING TO ITS PRODUCTS INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT ...

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