參數(shù)資料
型號(hào): 25LC256-EP
廠(chǎng)商: Microchip Technology Inc.
元件分類(lèi): EEPROM
英文描述: 256K SPI Bus Serial EEPROM
中文描述: 256K SPI總線(xiàn)串行EEPROM
文件頁(yè)數(shù): 7/26頁(yè)
文件大?。?/td> 367K
代理商: 25LC256-EP
2003 Microchip Technology Inc.
Preliminary
DS21822C-page 7
25AA256/25LC256
BLOCK DIAGRAM
FIGURE 2-1:
READ SEQUENCE
SI
SO
SCK
HOLD
WP
CS
Status
Register
I/O Control
Logic
Memory
Control
Logic
X
Dec
HV Generator
EEPROM
Array
Page Latches
Y Decoder
Sense Amp.
R/W Control
V
CC
V
SS
TABLE 2-1:
INSTRUCTION SET
Instruction Name
Instruction Format
Description
READ
0000 0011
0000 0010
0000 0100
0000 0110
0000 0101
0000 0001
Read data from memory array beginning at selected address
Write data to memory array beginning at selected address
Reset the write enable latch (disable write operations)
Set the write enable latch (enable write operations)
Read Status register
Write Status register
WRITE
WRDI
WREN
RDSR
WRSR
SO
SI
SCK
CS
0
2
3
4
5
6
7
8
9 10 11
21 22 23 24 25 26 27 28 29 30 31
1
0
1
0
0
0
0
0
1
15 14 13 12
2
1
0
7
6
5
4
3
2
1
0
instruction
16-bit address
data out
high-impedance
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