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MCP79522-I/MS 데이터시트(PDF) 37 Page - Microchip Technology

부품명 MCP79522-I/MS
상세설명  Battery-Backed SPI Real-Time Clock/Calendar
PDF  58 Pages
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제조업체  MICROCHIP [Microchip Technology]
홈페이지  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP79522-I/MS 데이터시트(HTML) 37 Page - Microchip Technology

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 2012-2022 Microchip Technology Inc. and its subsidiaries
DS20002300D-page 37
MCP7951X/MCP7952X
FIGURE 6-2:
SRAM/RTCC READ SEQUENCE
6.1.3
CLEAR SRAM INSTRUCTION
The CLRRAM instruction can be used to quickly clear
the contents of SRAM to 0x00. The RTCC registers are
not affected.
The device is selected by pulling CS low. The 8-bit
CLRRAM instruction is transmitted to the MCP795XX
followed by an 8-bit dummy data byte. CS is driven high
to end the operation (Figure 6-3). The value of the data
byte is ignored.
FIGURE 6-3:
CLEAR SRAM SEQUENCE
SO
SI
SCK
CS
0
23456789 10 11
1
01
0
1
0
0
01
A7 A6 A5 A4
A1 A0
76543210
Data Out
High-Impedance
A3 A2
Address Byte
12 13 14 15 16 17 18 19 20 21 22 23
Instruction
SO
SI
CS
9
1011
12131415
10
0
1
0
1
00
76
5
4
21
0
Instruction
Dummy Data Byte
High-Impedance
SCK
0
234
567
1
8
3



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