ICM7361/7341/7321
IC MICROSYSTEMS
SINGLE 12/10/8-BIT VOLTAGE-OUTPUT DACS
t1
SCK
t3
t2
SDI
CS
C3
C2
MSB
t5
Input Word for DAC N
t4
t6
Figure 1: Serial Interface Timing Diagram
CONTENTS OF INPUT SHIFT REGISTER
ICM7361 (12-Bit DAC)
MSB
LSB
D0
C3
C2
C1
C0
D11
D10
D9
D8
D7
D6
D5
D4
D3
D1
X
D2
D0
X
D1
Figure 2: Contents of ICM7361 Input Shift Register
ICM7341 (10-Bit DAC)
MSB
LSB
X
C3
C2
C1
C0
D9
D8
D7
D6
D5
D4
D3
D2
X
Figure 3: Contents of ICM7341 Input Shift Register
ICM7321 (8-Bit DAC)
MSB
LSB
X
C3
C2
C1
C0
D7
D6
D5
D4
D3
D2
D1
D0
X
Figure 4: Contents of ICM7321 Input Shift Register
C3
C2
C1
C0
DATA
FUNCTION
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Data
Data
Data
X
X
X
X
X
X
X
X
X
X
X
X
X
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 ]
