描述 Description

The Microchip AT28HC64B is a high-performance64Kbit Parallel EEPROM offering access times to 55ns with power dissipation of220mW. Deselected, CMOS standby current is less than 100μA. Accessed likestatic RAM for the read or write cycle without external components, it containsa 64-byte page register to allow writing of up to 64 bytes simultaneously.Optional Software Data Protection mechanismguards against inadvertent writes; and an extra 64 bytes of EEPROM enablesdevice identification or tracking.

特性 Features

8 Kbits x 8 (64 Kbit)
5 V ±10% Supply
Parallel Interface
70ns access time
Self-Timed Erase and Write Cycles (10 ms max)
Page Write and Byte Write
Data Polling for end of write detection
2 ms Maximum Option see AT28HC64BF datasheet
Low Power Consumption
Read / Write current 40 mA (Max)
Standby current TTL 2 mA (Max), CMOS 100 μA (Max)
Write-Protection
Hardware Protection
Software Data Protect
More than 100,000 erase/write cycles
Data retention > 10 years
Temperature Ranges
Standard Temperature Range: -40°C to 85°C
Available in Green (Pb/Halide-free) Packaging Only
32-lead, Plastic J-leaded Chip Carrier (PLCC)
28-lead, 0.300\" Wide, Plastic Gull Wing Small Outline (SOIC)
28-lead, Plastic Thin Small Outline Package (TSOP)

簡(jiǎn)介

AT28HC64B屬于集成電路（IC）的存儲(chǔ)器。由制造生產(chǎn)的AT28HC64B存儲(chǔ)器存儲(chǔ)器是集成電路上用作數(shù)據(jù)存儲(chǔ)設(shè)備的半導(dǎo)體器件。這些器件分為非易失性或易失性兩種，格式包括 CBRAM、DRAM、EEPROM、EERAM、EPROM、閃存、FRAM、NVSRAM、PCM (PRAM)、PSRAM、RAM 和 SRAM。這些器件的存儲(chǔ)容量為 64 b 至 6 Tb 不等，接口有 I2C、MMC、并行、eMMC、串行、單線、SPI、UFS、Xccela 總線和 1-線。