ST92185B STMicroelectronics, ST92185B Datasheet - Page 14

• Manufacturer Part Number: ST92185B
• Description: 16k/24k/32k Rom Hcmos Mcu With On-screen-display
• Manufacturer: STMicroelectronics

ST92185B - GENERAL DESCRIPTION
PIN DESCRIPTION (Cont’d)
P0[7:0], P2[5:0], P3[7:4], P4[7:0], P5[1:0]
I/O Port Lines (Input/Output, TTL or CMOS com-
patible).
28 lines grouped into I/O ports, bit programmable
as general purpose I/O or as Alternate functions
(see I/O section).
Table 1. ST92185B I/O Port Alternate Function Summary
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P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
P2.0
P2.1
P2.2
P2.3
P2.4
P2.5
P3.4
P3.5
P3.6
P3.7
P4.0
P4.1
P4.2
P4.3
P4.4
Name
Port
All ports useable
for general pur-
pose I/O (input,
output or bidi-
rectional)
Purpose I/O
General
SDIP42
39
38
14
13
12
11
28
29
30
31
32
10
42
41
40
9
8
7
6
5
4
3
1
Pin No.
SDIP56
10
56
55
54
53
52
14
13
12
11
42
43
44
45
46
9
8
7
6
5
4
3
1
AIN4
INT7
AIN1
INT5
INT0
AIN2
INT6
VSO1
NMI
AIN3
INT4
VSO2
RESET0
CSO
PWM0
PWM1
PWM2
PWM3
TSLU
HT
PWM4
Important : Note that open-drain outputs are for
logic levels only and are not true open drain.
1.2.1 I/O Port Alternate Functions.
Each pin of the I/O ports of the ST92185B may as-
sume software programmable Alternate Functions
(see Table 1).
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
O
O
O
O
O
O
O
O
O
O
I
I
I
I
I
I
I
I
I
I
A/D Analog Data Input 4
External Interrupt 7
A/D Analog Data Input 1
External Interrupt 5
External Interrupt 0
A/D Analog Data Input 2
External Interrupt 6
Voltage Synthesis Output 1
Non Maskable Interrupt Input
A/D Analog Data Input 3
External Interrupt 4
Voltage Synthesis Output 2
Internal Reset Output
Composite Sync output
PWM Output 0
PWM Output 1
PWM Output 2
PWM Output 3
Translucency Digital Output
Half-tone Output
PWM Output 4
Alternate Functions