参数资料
型号: 25AA1024-I/P
厂商: Microchip Technology
文件页数: 8/34页
文件大小: 0K
描述: IC EEPROM 1MBIT 20MHZ 8DIP
标准包装: 60
格式 - 存储器: EEPROMs - 串行
存储器类型: EEPROM
存储容量: 1M (128K x 8)
速度: 20MHz
接口: SPI 3 线串行
电源电压: 1.8 V ~ 5.5 V
工作温度: -40°C ~ 85°C
封装/外壳: 8-DIP(0.300",7.62mm)
供应商设备封装: 8-PDIP
包装: 管件
产品目录页面: 1450 (CN2011-ZH PDF)
25AA1024
Read Sequence
The device is selected by pulling CS low. The 8-bit
READ instruction is transmitted to the 25AA1024
followed by the 24-bit address, with seven MSBs of the
address being “don’t care” bits. After the correct READ
instruction and address are sent, the data stored in the
memory at the selected address is shifted out on the
SO pin.
The data stored in the memory at the next address can
be read sequentially by continuing to provide clock
pulses. The internal Address Pointer is automatically
incremented to the next higher address after each byte
of data is shifted out. When the highest address is
reached (1FFFFh), the address counter rolls over to
address, 00000h, allowing the read cycle to be contin-
ued indefinitely. The read operation is terminated by
raising the CS pin (Figure 2-1).
FIGURE 2-1:
CS
READ SEQUENCE
0
1
2
3
4
5
6
7
8
9 1 0 11
2 9 3 0 3 1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 3 9
SCK
Instruction
24-bit Address
SI
0
0
0
0
0
0
1
1 23 22 21 20
2
1
0
High-Impedance
Data Out
SO
7
6
5
4
3
2
1
0
DS21836H-page 8
? 2010 Microchip Technology Inc.
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