Datasheet
2010 Microchip Technology Inc. DS22244B-page 23
MCP4801/4811/4821
FIGURE 5-1: Write Command for MCP4821 (12-bit DAC).
FIGURE 5-2: Write Command for MCP4811 (10-bit DAC).
FIGURE 5-3: Write Command for MCP4801 (8-bit DAC).
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)
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)
Note: X = “don’t care” bits.
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
Note: X = “don’t care” bits.
0