101/117
ST72E85 ST72T85
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
PE0
PE1
PE2
PE3
PE4
PE5
PE6
PE7
PF0
PF1
PF2
PF3
PF4
PF5
PF6
PF7
I/O Port PE0
I/O Port PE1
I/O Port PE2
I/O Port PE3
I/O Port PE4
I/O Port PE5
I/O Port PE6
I/O Port PE7
I/O Port PF0
I/O Port PF1
I/O Port PF2
I/O Port PF3
I/O Port PF4
I/O Port PF5
I/O Port PF6
I/O Port PF7
Ground for Output
Buffers.
Power Supply for
Output Buffers
Reserved
Reserved
I/O Port PG0
I/O Port PG1
I/O Port PG2
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Software selectable as triggered input or push
pull output.
Software selectable as triggered input, a push
pull output, open drain output, or triggered inter-
rupt input with pull up (Interrupt I2).
Software selectable as a triggered input or as a
push pull output.
41
V
SSP
-
This pin is connected to pin 1.
42
V
DDP
-
This pin is connected to pin 2.
43
44
45
46
47
AINT
ARS
PG0
PG1
PG2
-
-
-
-
-
Must be tied to 5V
Must be tied to 5V
Software selectable as triggered input or push
pull output.
48
PG3
I/O Port PG3
-
Software selectable as triggered input, a push
pull output, open drain output, or triggered inter-
rupt input with pull up (Interrupt I1).
49
50
51
52
PG4
PG5
PG6
PG7
PH0/
RDSQUAL
PH1/
RDSCLK-
OUT
PH2/
RDSDATA
PH3
PH4
PH5
I/O Port PG4
I/O Port PG5
I/O Port PG6
I/O Port PG7
-
-
-
-
Software selectable as triggered input or push
pull output. Note that PH0, 1, 2 offer alternate
function capabilities for test purposes.
53
I/O Port PH0
RDS Quality signal
54
I/O Port PH1
RDS GBS Clock Out
signal
55
I/O Port PH2
RDS GBS Data sig-
nal
56
57
58
I/O Port PH3
I/O Port PH4
I/O Port PH5
RDS Comp Input sig-
nal
RDS Filtered Output
signal
RDS Input Reference
RDS input signal
Analog Power Supply
Analog Ground
-
-
-
Software selectable as triggered input or high
voltage (10V max) open drain output.
59
RDSCOMP
Used to feed the Demodulator from an external
filter when the internal filter is switched off.
60
RDSFIL
Used for Demodulator test purposes.
61
62
63
64
RDSREF
MPX
V
DDA
V
SSA
For RDS and ADC circuits
Pin
Pin Name(s)
Basic Function
Alternate Function
Remarks