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參數(shù)資料
| 型號： | AT25F2048N |
| 廠商： | Atmel Corp. |
| 英文描述： | High Speed CMOS Logic Hex Buffers/Line Drivers with Inverting 3-State Outputs 16-SOIC -55 to 125 |
| 中文描述： | SPI串行內(nèi)存200萬（262144 × 8） |
| 文件頁數(shù)： | 7/17頁 |
| 文件大?。?/td> | 257K |
| 代理商： | AT25F2048N |
7
AT25F2048
2455D–SEEPR–7/04
Functional
Description
The AT25F2048 is designed to interface directly with the synchronous serial peripheral
interface (SPI) of the 6800 type series of microcontrollers.
The AT25F2048 utilizes an 8-bit instruction register. The list of instructions and their
operation codes are contained in Table 1. All instructions, addresses, and data are
transferred with the MSB first and start with a high-to-low transition.
Write is defined as program and/or erase in this specification. The following commands,
PROGRAM, SECTOR ERASE, CHIP ERASE, and WRSR are write instructions for
AT25F2048.
WRITE ENABLE (WREN):
The device will power up in the write disable state when V
CC
is applied. All write instructions must therefore be preceded by the WREN instruction.
WRITE DISABLE (WRDI):
To protect the device against inadvertent writes, the WRDI
instruction disables all write commands. The WRDI instruction is independent of the sta-
tus of the WP pin.
READ STATUS REGISTER (RDSR):
The RDSR instruction provides access to the sta-
tus register. The READY/BUSY and write enable status of the device can be determined
by the RDSR instruction. Similarly, the Block Write Protection bits indicate the extent of
protection employed. These bits are set by using the WRSR instruction. During internal
write cycles, all other commands will be ignored except the RDSR instruction.
Table 1.
Instruction Set for the AT25F2048
Instruction Name
Instruction
Format
Operation
WREN
0000 X110
Set Write Enable Latch
WRDI
0000 X100
Reset Write Enable Latch
RDSR
0000 X101
Read Status Register
WRSR
0000 X001
Write Status Register
READ
0000 X011
Read Data from Memory Array
PROGRAM
0000 X010
Program Data Into Memory Array
SECTOR ERASE
0101 X010
Erase One Sector in Memory Array
CHIP ERASE
0110 X010
Erase All Sectors in Memory Array
RDID
0001 X101
Read Manufacturer and Product ID
Table 2.
Status Register Format
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
WPEN
X
X
X
BP1
BP0
WEN
RDY
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| AT25F2048N-10SU-2.7 | 功能描述:閃存 FLASH 2M SPI 10K CYCLES- 10MS 2.7V 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(shí)類型: 接口類型:SPI 訪問時(shí)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(fēng)格:SMD/SMT 封裝 / 箱體: 封裝:Reel |
| AT25F2048-W27-11 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:2Mbit High Speed SPI Serial Flash Memory 2M (262,144 x 8) |
| AT25F2048Y7-YH27-T | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:2Mbit High Speed SPI Serial Flash Memory 2M (262,144 x 8) |
| AT25F4096 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:4Mbit High Speed SPI Serial Flash Memory |
| AT25F4096_06 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:4Mbit High Speed SPI Serial Flash Memory |
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