标题: 25AA020A,25LC020A Device Data Sheet [打印本页] 作者: admin 时间: 2010-4-24 11:52 标题: 25AA020A,25LC020A Device Data Sheet 25AA020A/25LC020A Device Data Sheet
The Microchip Technology Inc. 25XX020A* is a 2 Kbit Serial Electrically Erasable Programmable Read-Only Memory (EEPROM). 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, transitions on its inputs will be ignored, with the exception of Chip Select, allowing the host to service higher priority interrupts. The 25XX020A is available in standard packages including 8-lead PDIP and SOIC, and advanced packages including 8-lead MSOP, 8-lead TSSOP and rotated TSSOP, 8-lead 2x3 DFN, and 6-lead SOT-23.
参数名称 数值
Density 2 Kbit (x8)
Max. Clock Freq. 10 MHz
Page Size (bytes) 16
Write Protect Quarter, Half, Whole Array
Endurance 1,000,000
Op. Volt Range (V) 1.8 to 5.5
Temp Range (°C) -40°C to +85°C
特性
10 MHz max. Clock Frequency
Low-Power CMOS Technology:
- Max. Write Current: 5 mA at 5.5V, 10 MHz
- Read Current: 5 mA at 5.5V, 10 MHz
- Standby Current: 5 μA at 5.5V
256 x 8-bit Organization
Write Page mode (up to 16 bytes)
Sequential Read
Self-Timed Erase and Write Cycles (5 ms max.)
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
High Reliability:
- Endurance: 1,000,000 Erase/Write cycles
- Data retention: >200 years
- ESD protection: >4000V
