AT27C256R 256Kbit, OTP EPROM存储器

Density 256K
Organization 32K x 8
Speed 45,70 ns
Vcc (V) 5
Packages TSOP 28
PDIP 28
PLCC 32
SOIC (330mil) 28
Pb-Free Packages TSOP 28
PDIP 28
PLCC 32
SOIC (330mil) 28

256K EPROM

The AT27C256R is a low-power, high-performance 262,144-bit one-time programmable read-only memory (OTP EPROM) organized 32K by 8 bits. It requires only one 5V power supply in normal read mode operation. Any byte can be accessed in less than 45 ns, eliminating the need for speed reducing WAIT states on high-performance microprocessor systems. Atmel’s scaled CMOS technology provides low-active power consumption, and fast programming. Power consumption is typically only 8 mA in Active Mode and less than 10 μA in Standby.

The AT27C256R is available in a choice of industry-standard JEDEC-approved one time programmable (OTP) plastic DIP, PLCC, SOIC, and TSOP packages. All devices feature two-line control (CE, OE) to give designers the flexibility to prevent bus contention. With 32K byte storage capability, the AT27C256R allows firmware to be stored reliably and to be accessed by the system without the delays of mass storage media. Atmel’s AT27C256R has additional features to ensure high quality and efficient production use. The Rapid Programming Algorithm reduces the time required to program the part and guarantees reliable programming. Programming time is typically only 100 μs/byte. The Integrated Product Identification Code electronically identifies the device and manufacturer. This feature is used by industry-standard programming equipment to select the proper programming algorithms and voltages.

AT27C256R 特性
AT27C256R 订购型号
Ordering Code Package ICC (mA)
VCC = 3.6V
tACC
(ns)
Operation Range
Active AStandby
AT27C256R-45JU
AT27C256R-45PU
AT27C256R-45RU
AT27C256R-45TU
32J
28P6
28R(1)
28T
20 0.1 45 Industrial (-40°C to +85°C)
AT27C256R-70JU
AT27C256R-70PU
AT27C256R-70RU
AT27C256R-70TU
32J
28P6
28R(1)
28T
20 0.1 70 Industrial (-40°C to +85°C)
AT27C256R 应用技术支持与电子电路设计开发资源下载
  1. ATMEL 爱特梅尔EPROM 存储器AT27C256R 数据手册DataSheet 下载. PDF(PDF 文件格式完整版)
  2. EPROM 产品选型指南.xls
  3. EPROM 产品选型指南
  4. ATMEL 爱特梅尔公司全线产品目录. pdf
  5. AT27CXXX Series (1 pages, updated 10/98) . pdf