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MCP47FXB2XT-EST Datasheet(PDF) 81 Page - Microchip Technology

Part # MCP47FXB2XT-EST
Description  8/10/12-Bit Quad/Octal Voltage Output, 6 LSb INL Digital-to-Analog Converters with I짼C Interface
PDF  124 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP47FXB2XT-EST Datasheet(HTML) 81 Page - Microchip Technology

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 2020 Microchip Technology Inc.
DS20006368A-page 81
MCP47FXBX4/8
FIGURE 7-1:
Write Random Address Command (Volatile and Nonvolatile Memory).
FIGURE 7-2:
I2C ACK/NACK Behavior (Write Command Example).
Memory Address
I2C ACK bit(1)
Note 1: The Acknowledge bit is generated by the MCP47FXBX4/8.
2: At the falling edge of the SCL pin for the WRITE command ACK bit, the MCP47FXBX4/8 device updates
the value of the specified device register.
3: This command sequence does not need to terminate (using the Stop bit) and the WRITE command can
be repeated.
SA
6
S
SA
5
SA
4
SA
3
SA
2
SA
1
SA
0
0
0
A
AD
4
AD
3
AD
2
AD
1
AD
0
0
0
X
A
AD
n
D
15
D
14
D
13
D
12
D
11
D
10
D
09
D
08
D
07
D
06
D
05
D
04
D
03
D
02
D
01
D
00
A
P
A
A
P
S
X
SA
n
0
0
I2C Start bit
I2C Slave Address
I2C Write bit
Write command
Reserved, should be set to ‘0’
I2C Stop bit(3)
D
nn
Register data (to be written)(2)
Control byte
Write command
Data to write MSB
Data to write LSB
Legend:
Write 1 Word Command
S
Slave Address
Command
Data Byte
Data Byte
P
Master
S
0
x
P
Example 1 (No Command Error)
Master
S 1 1 0 0 0 0 0 01 0 0 0 0 1 0 0 x1 d d d d d d d d1 d d d d d d d d1 P
MCP47FXBX4/8
0
0
0
0
I2C Bus
S 1 1 0 0 0 0 0 00 0 0 0 0 1 0 0 x0 d d d d d d d d0 d d d d d d d d0 P
Example 2 (Command Error)
Master
S 1 1 0 0 0 0 0 01 0 1 1 1 1 0 0 x1 d d d d d d d d1 d d d d d d d d1 P
MCP47FXBX4/8
0
1
1
1
I2C Bus
S 1 1 0 0 0 0 0 00 0 1 1 1 1 0 0 x0 d d d d d d d d1 d d d d d d d d1 P
Note: Once a command error occurs (example 2), the device will NACK until a Start condition occurs.



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