鈥?/div>
Serial Peripheral Interface (SPI) Compatible
Supports SPI Modes 0 (0,0) and 3 (1,1)
128-byte Page Mode Only for Write Operations
Low-voltage and Standard-voltage Operation
鈥?5.0 (V
CC
= 4.5V to 5.5V)
鈥?2.7 (V
CC
= 2.7V to 5.5V)
鈥?1.8 (V
CC
= 1.8V to 3.6V)
10 MHz (5V), 5MHz (2.7V) and 2 MHz (1.8V) Clock Rate
Block Write Protection
鈥?Protect 1/4, 1/2, or Entire Array
Write Protect (WP) Pin and Write Disable Instructions for
both Hardware and Software Data Protection
High Reliability
鈥?Endurance: 100K Write Cycles
鈥?Data Retention: >40 Years
8-pin PDIP, 8-lead EIAJ SOIC, 16-lead JEDEC SOIC and 8-lead Leadless Array Package
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
SPI Serial
EEPROMs
256K (32,768 x 8)
512K (65,536 x 8)
Description
The AT25HP256/512 provides 262,144/524,288 bits of serial electrically erasable pro-
grammable read only memory (EEPROM) organized as 32,768/65,536 words of 8-bits
each. The device is optimized for use in many industrial and commercial applications
where high-speed, low-power, and low-voltage operation are essential. The
AT25HP256/512 is available in a space saving 8-pin PDIP (AT25HP256/512), 8-lead
EIAJ SOIC (AT25HP256), 16-lead JEDEC SOIC (AT25HP512) and 8-lead Leadless
(continued)
AT25HP256
AT25HP512
Pin Configurations
Pin Name
CS
SCK
SI
SO
GND
VCC
WP
HOLD
Function
Chip Select
Serial Data Clock
Serial Data Input
Serial Data Output
Ground
Power Supply
Write Protect
Suspends Serial Input
CS
SO
NC
NC
NC
NC
WP
GND
16-lead SOIC
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
VCC
HOLD
NC
NC
NC
NC
SCK
SI
8-pin PDIP
CS
SO
WP
GND
1
2
3
4
8
7
6
5
VCC
HOLD
8-lead SOIC
CS
SO
WP
GND
1
2
3
4
8
7
6
5
VCC
HOLD
8-lead Leadless Array
VCC
HOLD
SCK
SI
8
7
6
5
1
2
3
4
CS
SO
WP
GND
SCK
SI
SCK
SI
Bottom View
Rev. 1113D鈥?5/01
1
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