Datasheet

 2010 Microchip Technology Inc. DS22248A-page 25
MCP4901/4911/4921
FIGURE 5-1: Write Command for MCP4921 (12-bit DAC).
FIGURE 5-2: Write Command for MCP4911 (10-bit DAC). Note: X are don’t care bits.
FIGURE 5-3: Write Command for MCP4901(8-bit DAC). Note: X are don’t care bits.
SDI
SCK
CS
0
21
GA
SHDN D11
D10
config bits 12 data bits
LDAC
3 4
D9
5
6
7
D8
D7
D6
8 9 10 12
D5
D4
D3
D2
D1 D0
11
13
14 15
V
OUT
(Mode 1,1)
(Mode 0,0)
BUF
0
SDI
SCK
CS
0
21
GA
SHDN D9
D8
config bits 12 data bits
LDAC
3 4
D7
5 6
7
D6
D5
D4
8
9 10 12
D3
D2
D1
D0
X X
11
13
14 15
V
OUT
(Mode 1,1)
(Mode 0,0)
BUF
0
SDI
SCK
CS
0
21
GA
SHDN
config bits 12 data bits
LDAC
3 4
5
6
7
X
D7
D6
8 9 10 12
D5
D4
D3
D2
D1
D0
11
13
14 15
V
OUT
(Mode 1,1)
(Mode 0,0)
XX
X
BUF0