Datasheet

© 2009 Microchip Technology Inc. DS22147A-page 39
MCP4017/18/19
FIGURE 5-13: I
2
C Read Command Format.
STOP bit
Slave Address Byte
Data Byte Data Byte
1010S1111 D3AD2D1D0A(1)D30D6D5D4 D2D1D0A(1)
Fixed
Address
Data Byte Data Byte
A(1) D30 D6D5D4 D2D1D0A
(2)
P
Read/Write bit (“1” = Read)
0D6D5D4
D3 D2 D1 D0
0D6D5D4
S = Start Condition
P = Stop Condition
A = Acknowledge
X = Don’t Care
R/W = Read/Write bit
Note 1 = Data bits
Legend
Note 1: Master Device is responsible for A / A signal. If a A signal occurs, the MCP4017/18/19
will abort this transfer and release the bus.
2: The Master Device will A, and the MCP4017/18/19 will release the bus so the Master Device can
generate a Stop or Repeated Start condition.