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Features
Max. clock 10 MHz
Low-power CMOS technology
1024 x 8-bit organization
16 byte page (‘A’ version devices)
32 byte page (‘B’ version devices)
Write cycle time: 5 ms max.
Self-timed ERASE and WRITE cycles
Block write protection
- Protect none, 1/4, 1/2 or all of array
Built-in write protection
- Power-on/off data protection circuitry
- Write enable latch
- Write-protect pin
Sequential read
High reliability
- Endurance: 1,000,000 erase/write cycles
- Data retention: > 200 years
- ESD protection: > 4000V
Pb-free and RoHS compliant
Temperature ranges supported;
Pin Function Table
Description
The Microchip Technology Inc. 25AA080A/B,
25LC080A/B (25XX080A/B
*
) are 8 Kbit Serial
Electrically Erasable PROMs. The memory is accessed
via a simple Serial Peripheral Interface (SPI)
compatible serial bus. The bus signals required are a
clock input (SCK) plus separate data in (SI) and data
out (SO) lines. Access to the device is controlled
through a Chip Select (CS) input.
Communication to the device can be paused via the
hold pin (HOLD). While the device is paused, transi-
tions on its inputs will be ignored, with the exception of
chip select, allowing the host to service higher priority
interrupts.
The 25XX080A/B is available in standard packages
including 8-lead PDIP and SOIC, and advanced
packaging including 8-lead MSOP, and 8-lead TSSOP.
All packages are Pb-free and RoHS compliant.
Package Types (not to scale)
Part Number VCC Range Page Size Temp. Ranges Packages
25LC080A 2.5-5.5V 16 Byte I, E P, SN, ST, MS
25AA080A 1.8-5.5V 16 Byte I P, SN, ST, MS
25LC080B 2.5-5.5V 32 Byte I, E P, SN, ST, MS
25AA080B 1.8-5.5V 32 Byte I P, SN, ST, MS
- Industrial (I): -40°Cto +85°C
- Automotive (E): -40°C to +125°C
Name Function
CS Chip Select Input
SO Serial Data Output
WP Write-Protect
VSS Ground
SI Serial Data Input
SCK Serial Clock Input
HOLD Hold Input
VCC Supply Voltage
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发表于 2012-11-2 15:47:38