參數(shù)資料
型號: 25AA128
廠商: Microchip Technology Inc.
英文描述: 128K SPI Bus Serial EEPROM
中文描述: 128K的SPI總線串行EEPROM
文件頁數(shù): 7/26頁
文件大小: 432K
代理商: 25AA128
2007 Microchip Technology Inc.
DS21831C-page 7
25AA128/25LC128
BLOCK DIAGRAM
FIGURE 2-1:
READ SEQUENCE
SI
SO
SCK
CS
HOLD
WP
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
Write data to memory array beginning at selected address
WRDI
Reset the write enable latch (disable write operations)
WREN
Set the write enable latch (enable write operations)
RDSR
Read STATUS register
WRSR
Write STATUS register
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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