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1. Description
Microchip Technology Inc. 25LC128-H/SN devices are Mid-density 8- through 256-Kbit Serial Electrically Erasable PROMs (EEPROM). The devices are organized in blocks of x8-bit memory and support the Serial Peripheral Interface (SPI) compatible serial bus architecture. Byte-level and page-level functions are supported. 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.
2. Features
1. Maximum Clock: 5 MHz
2. Low-Power CMOS Technology:
- Write current: 5 mA at 5.5V (maximum)
- Read current: 5 mA at 5.5V, 5 MHz
- Standby current: 10 μA at 5.5V
3. 1,024 x 8 through 32,768 x 8-bit Organization
4. Byte and Page-Level Write Operations
5. Self-Timed Erase and Write Cycles (6 ms maximum)
6. Block Write Protection:
- Protect none, 1/4, 1/2 or all of array
7. Built-in Write Protection:
- Power-on/off data protection circuitry
- Write enable latch
- Write-protect pin
8. Sequential Read
9. High Reliability:
- Endurance: >1,000,000 erase/write cycles
- Data retention: >200 years
- ESD protection: >4000V
10. Temperature Range Supported:
- Extended (H): -40°C to +150°C
11. RoHS Compliant
12. Automotive AECQ-100 Qualified
3. Pin configuration
4. Pin Function
5. Package overview
