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MCP98244 датащи(PDF) 33 Page - Microchip Technology

номер детали MCP98244
подробное описание детали  DDR4 DIMM Temperature Sensor with EEPROM for SPD
PDF  52 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP98244 датащи(HTML) 33 Page - Microchip Technology

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 2012-2013 Microchip Technology Inc.
DS22327C-page 33
MCP98244
5.3.3
BANK OR PAGE SELECTION FOR
EEPROM READ/WRITE OPERATION
There are two 256 byte banks or pages in this device
(512 bytes total). The pages are selected using I2C
Set Page Address (SPA) command byte of ‘0110
1100
’ for bank/page 0 and ‘0110 1110’ for bank/page
1, see Table 5-5.
The current page status can be read using the Read
Page Address (RPA) Command. If the device ACK or
NAK the command, then the current page is 0 or 1,
respectively.
TABLE 5-4:
SELECTING 256 BYTE BANKS OR PAGES FOR EEPROM READ/WRITE
FIGURE 5-12:
Timing Diagram for Bank/Page Selection (See Section 4.0 “Serial
Communication”)
EEPROM
Function
Operation
Address Byte
A0 PIN Voltage
MCP98244
output
Address
Code
Slave Address 1
R/W
A2
A1
A0
Set Bank/Page Address 0 (SPA0)
WRITE
0110
1
1
0
0
VDD, VSS, VHV ACK, Page 0 Set
Set Bank/Page Address 1 (SPA1)
WRITE
0110
1
1
1
0
VDD, VSS, VHV ACK, Page 1 Set
Read Bank/Page Address (RPA)
READ
0110
1
1
0
1
VDD, VSS, VHV ACK for Page 0
NAK for Page 1
Note 1:
A0, A1, A2 address pin states are ignored.
SDA
A
C
K
01
1
0
A
C
K
S
1
2
3
4
567
8
12
34
5
6
7
8
SCL
Address Byte
W
MCP98244
MCP98244
A
C
K
P
12
3
4
5
67
8
Data
Word Address
MCP98244
XX
X
X
X
XX
X
X
X
X
X
X
XX
X
11
X



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