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參數(shù)資料
| 型號： | AT49LV2048A |
| 廠商： | Atmel Corp. |
| 英文描述： | 2-megabit (256K x 8/128K x 16) Single 2.7-volt Battery-Voltage⑩ Flash Memory |
| 中文描述： | 2兆位（256 × 8/128K × 16）單2.7伏電池電壓⑩閃存 |
| 文件頁數(shù)： | 1/17頁 |
| 文件大?。?/td> | 263K |
| 代理商： | AT49LV2048A |
1
Features
Single-voltage Read/Write Operation: 2.7V to 3.6V (BV), 3.0V to 3.6V (LV)
Fast Read Access Time – 70 ns
Internal Erase/Program Control
Sector Architecture
– One 8K Word (16K Bytes) Boot Block with Programming Lockout
– Two 4K Word (8K Bytes) Parameter Blocks
– One 112K Word (224K Bytes) Main Memory Array Block
Fast Sector Erase Time – 10 Seconds
Byte-by-byte or Word-by-word Programming – 30 μs Typical
Hardware Data Protection
Data Polling for End of Program Detection
Low Power Dissipation
– 25 mA Active Current
– 50 μA CMOS Standby Current
Typical 10,000 Write Cycles
Description
The AT49BV/LV2048A is a 3-volt, 2-megabit Flash memory organized as 262,144
words of 8 bits each or 128K words of 16 bits each. Manufactured with Atmel’s
advanced nonvolatile CMOS technology, the device offers access times to 70 ns with
power dissipation of just 67 mW at 2.7V read. When deselected, the CMOS standby
current is less than 50 μA.
The device contains a user-enabled “boot block” protection feature. The
AT49BV/LV2048A locates the boot block at lowest order addresses (“bottom boot”).
To allow for simple in-system reprogrammability, the AT49BV/LV2048A does not
require high input voltages for programming. Reading data out of the device is similar
to reading from an EPROM; it has standard CE, OE and WE inputs to avoid bus con-
tention. Reprogramming the AT49BV/LV2048A is performed by first erasing a block of
data and then programming on a byte-by-byte or word-by-word basis.
Pin Configurations
Pin Name
Function
A0 - A16
Addresses
CE
Chip Enable
OE
Output Enable
WE
Write Enable
RESET
Reset
VPP
VPP can be left unconnected or connected to VCC, GND, 5V or
12V. The input has no effect on the operation of the device.
I/O0 - I/O15
Data Inputs/Outputs
I/O15(A-1)
I/O15 (Data Input/Output, Word Mode)
A-1 (LSB Address Input, Byte Mode)
BYTE
Selects Byte or Word Mode
NC
No Connect
2-megabit
(256K x 8/
128K x 16)
Single 2.7-volt
Battery-Voltage
Flash Memory
AT49BV2048A
AT49LV2048A
Rev. 1914D–FLASH–03/02
相關PDF資料 |
PDF描述 |
|---|---|
| AT49BV2048A | 2-megabit (256K x 8/128K x 16) Single 2.7-volt Battery-Voltage⑩ Flash Memory |
| AT49BV2048A-12TC | 2-megabit (256K x 8/128K x 16) Single 2.7-volt Battery-Voltage⑩ Flash Memory |
| AT49BV2048A-12TI | 2-megabit (256K x 8/128K x 16) Single 2.7-volt Battery-Voltage⑩ Flash Memory |
| AT49LV4096-20TC | 4-Megabit 256K x 16 3-volt Only CMOS Flash Memory |
| AT49LV4096-20TI | 4-Megabit 256K x 16 3-volt Only CMOS Flash Memory |
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