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Features
? Fast read access time – 55ns
? Low-power CMOS operation
– 100μA max standby
– 25mA max active at 5MHz
?
JEDEC standard packages
– 32-lead PDIP
– 32-lead PLCC
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5V ?? 10% supply
High-reliability CMOS technology
– 2,000V ESD protection
– 200mA latchup immunity
Rapid programming algorithm – 100μs/byte (typical)
CMOS- and TTL-compatible inputs and outputs
Integrated product identification code
Industrial and automotive temperature ranges
Green (Pb/halide-free) packaging option
2Mb (256K x 8)
One-time
Programmable,
Read-only Memory
Atmel AT27C020
1.
Description
The Atmel ? AT27C020 is a low-power, high-performance, 2,097,152-bit, one-time pro-
grammable, read-only memory (OTP EPROM) organized as 256K by 8 bits. It requires only
one 5V power supply in normal read mode operation. Any byte can be accessed in less than
55ns, eliminating the need for speed-reducing WAIT states on high-performance micropro-
cessor systems.
In read mode, the AT27C020 typically consumes 8mA. Standby mode supply current is
typically less than 10μA.
The AT27C020 is available in a choice of industry-standard, JEDEC approved, one-time pro-
grammable (OTP) PDIP and PLCC packages. All devices feature two-line control (CE, OE)
to give designers the flexibility to prevent bus c ontention.
With 256K byte storage capability, the AT27C020 allows firmware to be stored reliably and
to be accessed by the system without the delays of mass storage media.
The AT27C020 has additional features to ensure high quality and efficient production use.
The rapid programming algorithm reduces the time required to program the part and guar-
antees reliable programming. Programming time is typically only 100μs/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 pro-
gramming algorithms and voltages.
0570H–EPROM–4/11
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相关代理商/技术参数
AT27C020-55TC 功能描述:IC OTP 2MBIT 55NS 32TSOP RoHS:否 类别:集成电路 (IC) >> 存储器 系列:- 标准包装:32 系列:- 格式 - 存储器:闪存 存储器类型:FLASH 存储容量:1M (128K x 8) 速度:120ns 接口:并联 电源电压:2.7 V ~ 3.6 V 工作温度:0°C ~ 70°C 封装/外壳:32-LCC（J 形引线） 供应商设备封装:32-PLCC 包装:管件 其它名称:AT49BV00112JC
AT27C020-55TI 功能描述:可擦除可编程ROM 2Mb (128Kx8) OTP 5V 55ns RoHS:否 制造商:Maxim Integrated 类型: 存储容量:1024 bit 组织:1 K x 1 接口类型: 工作电流:5 uA 编程电压: 工作电源电压:2.8 V to 6 V 最大工作温度:+ 85 C 安装风格:Through Hole 封装 / 箱体:TO-92
AT27C020-55TU 功能描述:可擦除可编程ROM 2Mb (128Kx8) OTP 5V 55ns RoHS:否 制造商:Maxim Integrated 类型: 存储容量:1024 bit 组织:1 K x 1 接口类型: 工作电流:5 uA 编程电压: 工作电源电压:2.8 V to 6 V 最大工作温度:+ 85 C 安装风格:Through Hole 封装 / 箱体:TO-92
AT27C020-70DC 制造商:未知厂家 制造商全称:未知厂家 功能描述:x8 EPROM
AT27C020-70DI 制造商:未知厂家 制造商全称:未知厂家 功能描述:x8 EPROM
AT27C020-70JC 功能描述:可擦除可编程ROM 2M bit RoHS:否 制造商:Maxim Integrated 类型: 存储容量:1024 bit 组织:1 K x 1 接口类型: 工作电流:5 uA 编程电压: 工作电源电压:2.8 V to 6 V 最大工作温度:+ 85 C 安装风格:Through Hole 封装 / 箱体:TO-92
AT27C020-70JI 功能描述:IC OTP 2MBIT 70NS 32PLCC RoHS:否 类别:集成电路 (IC) >> 存储器 系列:- 标准包装:32 系列:- 格式 - 存储器:闪存 存储器类型:FLASH 存储容量:1M (128K x 8) 速度:120ns 接口:并联 电源电压:2.7 V ~ 3.6 V 工作温度:0°C ~ 70°C 封装/外壳:32-LCC（J 形引线） 供应商设备封装:32-PLCC 包装:管件 其它名称:AT49BV00112JC
AT27C020-70LC 制造商:未知厂家 制造商全称:未知厂家 功能描述:x8 EPROM