Datasheet

 2002-2012 Microchip Technology Inc. DS21456D-page 21
TC7109/A
FIGURE 4-7: Handshake Interface for Multiplexed Converters
FIGURE 4-8: Connection Diagram
TC7109A
B
9
- B
12
POL, OR
B
1
- B
8
LBENHBEN
8
6
Analog In
RUN/HOLD
SENDMODE
CE/
LOAD
+5V
TC7109A
B
9
- B
12
POL, OR
B
1
- B
8
LBENHBEN
8
6
8-Bit Data Bus
Analog In
RUN/HOLD
SENDMODE
CE/
LOAD
+5V
TC7109A
B
9
- B
12
POL, OR
B
1
- B
8
LBENHBEN
8
6
Analog In
RUN/HOLD
SENDMODE
CE/
LOAD
+5V
TBRL DRR
GND
TBRE RBR1 - RBR8 SFD TBR1 - TBR8
Serial Output
Serial Input
6402 CMOS UART
23
40
1
17
V+
GND
TEST
RUN/HOLD
STATUS
LBEN
HBEN
39
38
37
36
35
34
33
32
31
30
29
28
27
25
24
23
22
21
TC7109A
1
4
5
6
7
10
9
11
25
26
39
40
20
T0
RESET
SS
INT
EA
WR
PSEN
ALE
PROG
V
DD
T1
V
CC
GND
P20 - P27
2
μPD8748H/49H
CMOS
Microcomputer
+5V
Other I/O
+5V
GND
-5V
GND
3.58MHz
Crystal
Analog
GND
External
Reference
+
+
–
Input
C
AZ
0.33μF
R
INT
20k
10 k
Ω
Ω
0.2 V
REF
1 V
REF
XTAL2XTAL1
8
5
P14 - P17
P13
P12
P11
P10
DB0 - DB7
RD
30
29
28
27
B
9
- B
12
,
POL, OR
B
1
- B
8
CE/LOAD
21-24,
35-38
12-19
8
31-34
26
2
18
19
C
INT
0.15μF
0.01μF
1MΩ
1μF
GND
+5V
+5V
+5V
+5V
GND
23
6
8
3-8
9-16
20
REF IN-
REF CAP-
REF CAP+
REF IN+
IN HI
HI LO
COM
INT
AZ
BUFF
REF OUT
V-
OSC SEL
OSC OUT
OSC IN
SEND
BUFF OSC OUT
MODE
8
–