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Atmel Electronic Components Datasheet

AT25HP512 Datasheet

SPI Serial EEPROMs

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Features
Serial Peripheral Interface (SPI) Compatible
Supports SPI Modes 0 (0,0) and 3 (1,1)
10 MHz Clock Rate
128-Byte Page Mode Only for Write Operations
Low-Voltage and Standard-Voltage Operation
– 5.0 (VCC = 4.5V to 5.5V)
– 2.7 (VCC = 2.7V to 5.5V)
– 1.8 (VCC = 1.8V to 3.6V)
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
High Reliability
– Endurance: 100K Write Cycles
– Data Retention: > 40 Years
– ESD Protection: > 3000V
8-Pin PDIP, 8-Pin EIAJ SOIC, and 8-Pin Leadless Array Package
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-pin
EIAJ SOIC (AT25HP256), and 8-pin Leadless Array (AT25HP256/512) packages. In
(continued)
SPI Serial
EEPROMs
256K (32,768 x 8)
512K (65,536 x 8)
AT25HP256
AT25HP512
Preliminary
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
8-Pin PDIP
CS
SO
WP
GND
1
2
3
4
8 VCC
7 HOLD
6 SCK
5 SI
8-Pin SOIC
CS
SO
WP
GND
1
2
3
4
8 VCC
7 HOLD
6 SCK
5 SI
8-Pin Leadless Array
VCC 8
HOLD 7
SCK 6
SI 5
1 CS
2 SO
3 WP
4 GND
Bottom View
Rev. 1113B–07/98
1


Atmel Electronic Components Datasheet

AT25HP512 Datasheet

SPI Serial EEPROMs

No Preview Available !

addition, the entire family is available in 5.0V (4.5V to
5.5V), 2.7V (2.7V to 5.5V), and 1.8V (1.8V to 3.6V) ver-
sions.
The AT25HP256/512 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 separate ERASE cycle is required before
WRITE.
BLOCK WRITE protection is enabled by programming the
status register with top ¼, top ½ or entire array of write pro-
tection. Separate program enable and program disable
instructions are provided for additional data protection.
Hardware data protection is provided via the WP pin to pro-
tect against inadvertent write attempts to the status regis-
ter. The HOLD pin may be used to suspend any serial
communication without resetting the serial sequence.
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
*NOTICE:
Stresses beyond those listed under “Absolute Maxi-
mum Ratings” may cause permanent damage to the
device. This is a stress rating only and functional
operation of the device at these or any other condi-
tions beyond those indicated in the operational sec-
tions of this specification is not implied. Exposure to
absolute maximum rating conditions for extended
periods may affect device reliability.
Block Diagram
32,768/65,536 x 8
2 AT25HP256/512


Part Number AT25HP512
Description SPI Serial EEPROMs
Maker ATMEL Corporation
Total Page 15 Pages
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