ICmic
SCK
IC MICROSYSTEMS
ICM7361/7341/7321
SINGLE 12/10/8-
BIT
V
OLTAGE
-O
UTPUT
DAC
S
t
1
t
3
t
2
SDI
C3
C2
MSB
t
5
Input Word for DAC N
t
4
CS
t
6
Figure 1:
Serial Interface Timing Diagram
CONTENTS OF INPUT SHIFT REGISTER
ICM7361 (12-Bit DAC)
MSB
C3
C2
C1
C0
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
LSB
D0
Figure 2:
Contents of ICM7361 Input Shift Register
ICM7341 (10-Bit DAC)
MSB
C3
C2
C1
C0
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
X
LSB
X
Figure 3:
Contents of ICM7341 Input Shift Register
ICM7321 (8-Bit DAC)
MSB
C3
C2
C1
C0
D7
D6
D5
D4
D3
D2
D1
D0
X
X
X
LSB
X
Figure 4:
Contents of ICM7321 Input Shift Register
C3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
C2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
C1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
C0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
DATA
Data
Data
Data
X
X
X
X
X
X
X
X
X
X
X
X
X
FUNCTION
Load Input Latch
Update DAC
Load Input Latch and Update DAC
No Operation
No Operation
No Operation
No Operation
No Operation
No Operation
No Operation
No Operation
No Operation
No Operation
No Operation
No Operation
No Operation
Table 1:
Serial Interface Control Command
Rev. A8
ICmic reserves the right to change the specifications without prior notice.
5
ICMIC [ IC MICROSYSTEMS ]
