APPLICATION NOTES
Refer to Section 8 for Applications Information
MP7543
(8)
8085
ALE
8212
WR
(8) AD0-7
SOD
+5 V
FROM SYSTEM RESET
ADDRESS BUS (16)
A0-15
ADDRESS (16)
6800
ADDRESS BUS (16)
A0-15
ADDRESS (16)
E1
E3 8205
+5 V
E2
DECODER
DATA
DATA (8)
SR1 LD2 STB2
STB3
STB1 MP7543
STB4
LD1 CLR
R/W
E1
φ2
E3 8205
DECODER
E2
D0
DATA BUS (8)
D7
DATA (8)
+5 V
SR1 LD2 STB1
STB3
STB2 MP7543
STB4
LD1 CLR
FROM SYSTEM RESET
Figure 1. MP7543 8085 Interface
Figure 2. MP7543 MC6800 Interface
VIN
IOUT1
IOUT2
Digital Input
RFB
VREF
MP7543
–
VOUT
+
Figure 3. Digitally Programmable
Gain Amplifier
Graph 1. Relative Accuracy vs. Digital Code
Rev. 2.00
7