参数资料
型号: AT49F002ANT-55VU
厂商: ATMEL CORP
元件分类: DRAM
英文描述: 2-megabit (256K x 8) 5-volt Only Flash Memory
中文描述: 256K X 8 FLASH 5V PROM, 55 ns, PDSO32
封装: 8 X 14 MM, LEAD AND HALIDE FREE, PLASTIC, MO-142BA, TSOP1-32
文件页数: 6/20页
文件大小: 213K
代理商: AT49F002ANT-55VU
6
3354F–FLASH–2/05
AT49F002A(N)(T)
4.7
Product Identification
The product identification mode identifies the device and manufacturer as Atmel. It may be
accessed by hardware or software operation. The hardware operation mode can be used by an
external programmer to identify the correct programming algorithm for the Atmel product.
For details, see Operating Modes (for hardware operation) or Software Product Identification.
The manufacturer and device code is the same for both modes.
4.8
DATA Polling
The AT49F002A(N)(T) features DATA polling to indicate the end of a program cycle. During a
program cycle an attempted read of the last byte loaded will result in the complement of the
loaded data on I/O7. Once the program cycle has been completed, true data is valid on all out-
puts and the next cycle may begin. DATA polling may begin at any time during the program
cycle.
4.9
Toggle Bit
In addition to DATA polling the AT49F002A(N)(T) provides another method for determining the
end of a program or erase cycle. During a program or erase operation, successive attempts to
read data from the device will result in I/O6 toggling between one and zero. Once the program
cycle has completed, I/O6 will stop toggling and valid data will be read. Examining the toggle bit
may begin at any time during a program cycle.
4.10
Hardware Data Protection
Hardware features protect against inadvertent programs to the AT49F002A(N)(T) in the
following ways: (a) V
CC
sense: if V
CC
is below 3.8V (typical), the program function is inhibited.
(b) Program inhibit: holding any one of OE low, CE high or WE high inhibits program cycles.
(c) Noise filter: pulses of less than 15 ns (typical) on the WE or CE inputs will not initiate a pro-
gram cycle.
相关PDF资料
PDF描述
AT49F002N-12JC MB 41C 41#20 PIN RECP
AT49F002N-12JI MB 41C 41#20 SKT RECP RoHS Compliant: No
AT49F002N-12PC MB 12C 12#12 SKT RECP
AT49F002-12JC 2-Megabit 256K x 8 5-volt Only Flash Memory
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相关代理商/技术参数
参数描述
AT49F002AT 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:2-megabit (256K x 8) 5-volt Only Flash Memory
AT49F002AT-55JI 功能描述:闪存 2M (256kx8) RoHS:否 制造商:ON Semiconductor 数据总线宽度:1 bit 存储类型:Flash 存储容量:2 MB 结构:256 K x 8 定时类型: 接口类型:SPI 访问时间: 电源电压-最大:3.6 V 电源电压-最小:2.3 V 最大工作电流:15 mA 工作温度:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体: 封装:Reel
AT49F002AT-55PI 功能描述:IC FLASH 2MBIT 55NS 32DIP 制造商:microchip technology 系列:- 包装:管件 零件状态:停產 存储器类型:非易失 存储器格式:闪存 技术:FLASH 存储容量:2Mb (256K x 8) 写周期时间 - 字,页:50μs 访问时间:55ns 存储器接口:并联 电压 - 电源:4.5 V ~ 5.5 V 工作温度:-40°C ~ 85°C(TC) 安装类型:通孔 封装/外壳:32-DIP(0.600",15.24mm) 供应商器件封装:32-DIP 基本零件编号:AT49F002 标准包装:12
AT49F002AT-55TI 功能描述:IC FLASH 2MBIT 55NS 32TSOP RoHS:否 类别:集成电路 (IC) >> 存储器 系列:- 标准包装:96 系列:- 格式 - 存储器:闪存 存储器类型:FLASH 存储容量:16M(2M x 8,1M x 16) 速度:70ns 接口:并联 电源电压:2.65 V ~ 3.6 V 工作温度:-40°C ~ 85°C 封装/外壳:48-TFSOP(0.724",18.40mm 宽) 供应商设备封装:48-TSOP 包装:托盘
AT49F002AT-55VI 功能描述:IC FLASH 2MBIT 55NS 32VSOP RoHS:否 类别:集成电路 (IC) >> 存储器 系列:- 标准包装:96 系列:- 格式 - 存储器:闪存 存储器类型:FLASH 存储容量:16M(2M x 8,1M x 16) 速度:70ns 接口:并联 电源电压:2.65 V ~ 3.6 V 工作温度:-40°C ~ 85°C 封装/外壳:48-TFSOP(0.724",18.40mm 宽) 供应商设备封装:48-TSOP 包装:托盘