SERIAL INTERFACE ADAPTER FOR
TC500 A/D CONVERTER FAMILY
1
2
3
4
5
6
7
8
TC520A
TC520A CONVERSION STATE
INT DINT
AZ
INT
AZ
IZ
DINT
IZ
AZ
INT
LOAD
CE
LOAD VALUE updated
and conversion started
LOAD VALUE
shift into
DIN
DIN, DCLK
DV
Figure 2. Load Value Modify Cycle
+5V
C
6
INT
16
+
1
V
INT
OSC
OSC
OUT
1
12
8
+
V
CRYSTAL
10k
C
AZ
3
4
LD
RD
SK
SO
SI
LOAD
READ
7
3
CAZ
BUF
IN
14
13
12
6
CMPTR
100k
CMPTR
10
11
9
R
INT
11
D
4
+
IN
CLK
V
IN+
B
B
D
5
IN
.01µ
A
A
TC500
10
9
13
14
D
–
IN
V
OUT
IN-
–
+
DV
CE
CR
+
REF
C
REF
7
15
2
.01µ
CR
TC520A
8
5
–
2
REF
GND
100k
GND
V
COM
TC05
ANALOG GROUND
–5V
CE
DV
DGND
Figure 3. Typical System Application
TELCOM SEMICONDUCTOR, INC.
3-45
TELCOM [ TELCOM SEMICONDUCTOR, INC ]
