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产品概述
The Atmel 2Kb SPI Serial EEPROM, organized as 256 words x 8 bits, is accessed via a 3-wire serial bus supporting SPI Mode 0 and 3 operation. It is optimized for automotive applications where low-power and low-voltage operations are essential. The EEPROM is available in two 8-lead, space-saving packaging options and operates at 2.5V (Vcc = 2.5V to 5.5V). The 3-wire serial interface consists of a data input, output, and a shift clock. All programming cycles are completely self-timed, and no separate erase cycle is required before write. Block Write Protection is program enabled and separate program enable and disable instructions are provided for additional data protection. Hardware data protection is provided to protect against inadvertent write attempts to the status register. Any serial communication suspension can be accomplished without resetting the serial sequence.
关键参数
| Parameter | Value |
| Operating Voltage (Vcc): | 2.5 |
| Interface Type: | SPI |
| Density: | 2Kb |
| Organization: | 256 x 8 |
| Page Size (Bytes): | 8 |
| F.max (MHz): | 5 MHz |
| Max. Operating Freq. (MHz): | 5 MHz |
| I/O Pins: | 8 |
芯片订购型号
| Ordering Code | Package | Speed | Power Supply | Operational Range |
| AT25020B-SSPD-T | SOIC 8S1 8 | 5 | 2.5-5.5 | Automotive(Grade 1) (-40°C to 125°C) |
| AT25020B-XPD-T | TSSOP 8X 8 | 5 | 2.5-5.5 | Automotive(Grade 1) (-40°C to 125°C) |
