* Note: Pins 3, 4 and 17, 18 are internally connected for 14-lead TSSOP socket compatibility.
SPI Serial
E
2
PROMs
128K (16384 x 8)
AT25128
Preliminary
Features
•
Serial Peripheral Interface (SPI) Compatible
•
Supports SPI Modes 0 (0,0) and 3 (1,1)
•
Low Voltage and Standard Voltage Operation
5.0 (V
CC
= 4.5V to 5.5V)
2.7 (V
CC
= 2.7V to 5.5V)
1.8 (V
CC
= 1.8V to 3.6V)
•
2.1 MHz Clock Rate
•
32-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 (5 ms Typical)
•
High Reliability
Endurance: 100,000 Cycles
Data Retention: 100 Years
•
Automotive Grade and Extended Temperature Devices Available
•
8-Pin PDIP, 14-pin, 16-pin JEDEC SOIC, and 20-Pin TSSOP Packages
Description
The AT25128 provides 131,072 bits of serial electrically erasable programmable read
only memory (EEPROM) organized as 16,384 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 AT25128 is available in space saving
8-pin PDIP, JEDEC SOIC, and 14-pin and 20-pin TSSOP packages.
(continued)
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
NC No Connect
DC Don’t Connect
1
2
3
4
8
7
6
5
CS
SO
WP
GND
VCC
HOLD
SCK
SI
8-Pin PDIP
1
2
3
4
5
6
7
14
13
12
11
10
9
8
CS
SO
NC
NC
NC
WP
GND
VCC
HOLD
NC
NC
NC
SCK
SI
14-Pin SOIC
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
CS
SO
NC
NC
NC
NC
WP
GND
VCC
HOLD
NC
NC
NC
NC
SCK
SI
16-Lead SOIC
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
NC
CS
SO
SO
NC
NC
WP
GND
DC
NC
NC
VCC
HOLD
HOLD
NC
NC
SCK
SI
DC
NC
20-Lead TSSOP*