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參數(shù)資料
| 型號： | AT49F002AT |
| 廠商： | Atmel Corp. |
| 英文描述： | 2-megabit (256K x 8) 5-volt Only Flash Memory |
| 中文描述： | 2兆位（256K × 8）5伏只有閃存 |
| 文件頁數(shù)： | 1/20頁 |
| 文件大?。?/td> | 213K |
| 代理商： | AT49F002AT |
Features
Single-voltage Operation
– 5V Read
– 5V Reprogramming
Fast Read Access Time – 55 ns
Internal Program Control and Timer
Sector Architecture
– One 16K Bytes Boot Block with Programming Lockout
– Two 8K Bytes Parameter Blocks
– Four Main Memory Blocks (One 32K Bytes, Three 64K Bytes)
Fast Erase Cycle Time – 4 Seconds
Byte-by-Byte Programming – 20 μs/Byte Typical
Hardware Data Protection
DATA Polling for End of Program Detection
Low Power Dissipation
– 25 mA Active Current
– 100 μA CMOS Standby Current
Typical 10,000 Write Cycles
Green (Pb/Halide-free) Packaging Option
1.
The AT49F002A(N)(T) is a 5-volt only in-system reprogrammable Flash memory. Its
2 megabits of memory is organized as 262,144 words by 8 bits. Manufactured with
Atmel’s advanced nonvolatile CMOS technology, the device offers access times to
55 ns with power dissipation of just 137 mW over the industrial temperature range.
Description
When the device is deselected, the CMOS standby current is less than 100 μA. For
the AT49F002AN(T) pin 1 for the PLCC package and pin 9 for the TSOP package are
no connect pins.
To allow for simple in-system reprogrammability, the AT49F002A(N)(T) does not
require high input voltages for programming. Five-volt-only commands determine the
read and programming operation of the device. Reading data out of the device is sim-
ilar to reading from an EPROM; it has standard CE, OE, and WE inputs to avoid bus
contention. Reprogramming the AT49F002A(N)(T) is performed by erasing a block of
data and then programming on a byte-by-byte basis. The byte programming time is a
fast 20 μs. The end of a program cycle can be optionally detected by the DATA polling
feature. Once the end of a byte program cycle has been detected, a new access for a
read or program can begin. The typical number of program and erase cycles is in
excess of 10,000 cycles.
The device is erased by executing the erase command sequence; the device inter-
nally controls the erase operations. There are two 8K byte parameter block sections,
four main memory blocks, and one boot block.
The device has the capability to protect the data in the boot block; this feature is
enabled by a command sequence. The 16K-byte boot block section includes a repro-
gramming lock out feature to provide data integrity. The boot sector is designed to
contain user secure code, and when the feature is enabled, the boot sector is pro-
tected from being reprogrammed.
2-megabit
(256K x 8)
5-volt Only
Flash Memory
AT49F002A
AT49F002AN
AT49F002AT
AT49F002ANT
3354F–FLASH–2/05
相關PDF資料 |
PDF描述 |
|---|---|
| AT49F002AT-55JI | 2-megabit (256K x 8) 5-volt Only Flash Memory |
| AT49F002AT-55TI | LM4836 Boomer ® Audio Power Amplifier Series Stereo 2W Audio Power Amplifiers with DC Volume Control, Bass Boost, and Input Mux; Package: TSSOP; No of Pins: 28 |
| AT49F002AT-55VI | LM4836 Boomer ® Audio Power Amplifier Series Stereo 2W Audio Power Amplifiers with DC Volume Control, Bass Boost, and Input Mux; Package: TSSOP EXP PAD; No of Pins: 28 |
| AT49F002N | 2-Megabit 256K x 8 5-volt Only Flash Memory |
| AT49F002N-12TC | 2-Megabit 256K x 8 5-volt Only Flash Memory |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AT49F002AT-55JI | 功能描述:閃存 2M (256kx8) RoHS:否 制造商:ON Semiconductor 數(shù)據(jù)總線寬度:1 bit 存儲類型:Flash 存儲容量:2 MB 結(jié)構(gòu):256 K x 8 定時類型: 接口類型:SPI 訪問時間: 電源電壓-最大:3.6 V 電源電壓-最小:2.3 V 最大工作電流:15 mA 工作溫度:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體: 封裝:Reel |
| AT49F002AT-55PI | 功能描述:IC FLASH 2MBIT 55NS 32DIP 制造商:microchip technology 系列:- 包裝:管件 零件狀態(tài):停產(chǎn) 存儲器類型:非易失 存儲器格式:閃存 技術:FLASH 存儲容量:2Mb （256K x 8） 寫周期時間 - 字，頁:50μs 訪問時間:55ns 存儲器接口:并聯(lián) 電壓 - 電源:4.5 V ~ 5.5 V 工作溫度:-40°C ~ 85°C（TC） 安裝類型:通孔 封裝/外殼:32-DIP（0.600"，15.24mm） 供應商器件封裝:32-DIP 基本零件編號:AT49F002 標準包裝:12 |
| AT49F002AT-55TI | 功能描述:IC FLASH 2MBIT 55NS 32TSOP RoHS:否 類別:集成電路 (IC) >> 存儲器 系列:- 標準包裝:96 系列:- 格式 - 存儲器:閃存 存儲器類型:FLASH 存儲容量:16M（2M x 8，1M x 16） 速度:70ns 接口:并聯(lián) 電源電壓:2.65 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 封裝/外殼:48-TFSOP（0.724"，18.40mm 寬） 供應商設備封裝:48-TSOP 包裝:托盤 |
| AT49F002AT-55VI | 功能描述:IC FLASH 2MBIT 55NS 32VSOP RoHS:否 類別:集成電路 (IC) >> 存儲器 系列:- 標準包裝:96 系列:- 格式 - 存儲器:閃存 存儲器類型:FLASH 存儲容量:16M（2M x 8，1M x 16） 速度:70ns 接口:并聯(lián) 電源電壓:2.65 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 封裝/外殼:48-TFSOP（0.724"，18.40mm 寬） 供應商設備封裝:48-TSOP 包裝:托盤 |
| AT49F002N | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:2-Megabit 256K x 8 5-volt Only Flash Memory |
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