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MCP79520 数据表(PDF) 44 Page - Microchip Technology

部件名 MCP79520
功能描述  Battery-Backed SPI Real-Time Clock/Calendar
PDF  58 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

MCP79520 数据表(HTML) 44 Page - Microchip Technology

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MCP7951X/MCP7952X
DS20002300D-page 44
 2012-2022 Microchip Technology Inc.and its subsidiaries
FIGURE 6-11:
PROTECTED EEPROM READ SEQUENCE
FIGURE 6-12:
PROTECTED EEPROM UNLOCK AND PAGE WRITE SEQUENCE
SO
SI
SCK
CS
0
23456789 10 11
1
01
0
1
1
0
01
A1 A0
76543210
Data Out
High-Impedance
A3 A2
Address Byte
12 13 14 15 16 17 18 19 20 21 22 23
Instruction
00
00
SI
CS
910 11
00
0
1
1
0
01
76
5
4
32
10
Data Byte 1
SCK
0
2
34
567
1
8
SI
CS
33 34 35
38 39
76
543
21
0
Data Byte n (8 max)
SCK
24
26 27 28 29 30 31
25
32
76
54
321
0
Data Byte 3
76
54
321
0
Data Byte 2
36 37
Instruction
Address Byte
A3
A1 A0
A2
12 13 14 15 16 17 18 19 20 21 22 23
SI
CS
910 11
10
0
1
0
0
00
SCK
0
234
56
7
1
8
Instruction
Data Byte
12 13 14 15
01
00
0
1
1
1
1. UNLOCK
Instruction
with 0x55
Data Byte
SI
CS
910 11
10
0
1
0
0
00
SCK
0
234
56
7
1
8
Instruction
Data Byte
12 13 14 15
10
11
1
0
0
0
2. UNLOCK
Instruction
with 0xAA
Data Byte
3. IDWRITE
Instruction
0 000



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