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MCP465X Datasheet(HTML) 49 Page - Microchip Technology

Part No. MCP465X
Description  7/8-Bit Single/Dual I2C Digital POT with Volatile Memory
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Maker  MICROCHIP [Microchip Technology]
Homepage  http://www.microchip.com
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MCP465X Datasheet(HTML) 49 Page - Microchip Technology

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 2008-2013 Microchip Technology Inc.
DS22096B-page 49
MCP453X/455X/463X/465X
FIGURE 6-11:
General Call Formats.
0
00
0
S
0
000
X
XXXX
A
XX0A
P
General Call Address
Second Byte
“7-bit Command”
Reserved 7-bit Commands (By I2C Specification - Philips # 9398 393 40011, Ver. 2.1 January 2000)
‘0000 011’
b - Reset and write programmable part of slave address by hardware.
‘0000 010’
b - Write programmable part of slave address by hardware.
‘0000 000’
b - NOT Allowed
MCP45XX/MCP46XX 7-bit Commands
‘1000 01x’
b - Increment Wiper 0 Register.
‘1001 01x’
b - Increment Wiper 1 Register.
The Following is a Microchip Extension to this General Call Format
0
00
0
S
0
000
X
XXXX
AX
d
0
A
General Call Address
Second Byte
“7-bit Command”
MCP45XX/MCP46XX 7-bit Commands
‘1000 00d’
b - Write Next Byte (Third Byte) to Volatile Wiper 0 Register.
‘1001 00d’
b - Write Next Byte (Third Byte) to Volatile Wiper 1 Register.
d
dddd
ddd
A
P
Third Byte
The Following is a “Hardware General Call” Format
0
00
0
S0
0
0
0
X
XXXX
A
XX1A
General Call Address
Second Byte
“7-bit Command”
X
XXXX
XXX AP
n occurrences of (Data + A)
This indicates a “Hardware General Call”
MCP45XX/MCP46XX will ignore this byte and
all following bytes (and A), until
‘1000 10x’b - Decrement Wiper 0 Register.
‘1001 10x’
b - Decrement Wiper 1 Register.
‘1100 00d’
b - Write Next Byte (Third Byte) to TCON Register.
a Stop bit (P) is encountered.
“0” for General Call Command


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