8
8Bit Single Chip Microcontroller
DMC73C168
3.2
Description
Pin No.
1
2
I/O
I/O
I/O
FUNCTIONAL DESCRIPTION
Port A is a bidirectional data port.
These Ports can be selected as universal Counter
input. A0 and A1 work as the FM IF and AM IF pin,
independently. The maximum input frequency is 5MHz
for AM IF (0.1Vp-p) and 20MHz (0.1Vp-p) for FM IF.
These Posts can be selected for an A/D Converter Input.
2 Channel/8-Bit Analog-to-Digital Converter are used for
the Sequential Comparison method by program.
Reference Voltage of the A/D Converter is the same
level of VDD (5V
¡
10%)
¾
The A4,A5 Port can be used as event counter input 1,2.
PORT TYPE
Analog-IN or
Logic-IN/
Push-Pull OUT
NAME
A0/FM IF
A1/AM IF
A2/AD1
A3/AD2
3
4
I/O
I/O
Analog-IN or
Logic-IN/
Push-Pull OUT
A4/ECI1
A5/ECI2
A6/INT4
A7/INT3
5
6
7
8
I/O
I/O
I/O
I/O
These Ports can be used as external interrupt pin.
Logic-IN or
Schmitt-
Trigger-IN/
Push-Pull OUT
Logic-IN/
Push-Pull OUT
E0/SO1
E1/SI1
E2/SCLK1
9
10
11
I/O
I/O
I/O
Port E is a bidirectional data port.
These Ports can be selected as serial interface (SIO) 1.
E0, E1 and E2 work as the serial output, serial input and
serial clock pin, respectively.
These Ports can be selected as serial interface (SIO) 2.
E3, E4 and E5 work as the serial output, serial input and
serial clock pin, respectively.
E3/SO2
E4/SI2
E5/SCLK2
E6
E7/BEEP
F0
F1
F2
F3
F4
F5
F6
F7
12
13
14
15
16
17
18
19
20
21
22
23
24
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
Logic-IN/
Push-Pull OUT
The E7 Port can be used as BEEP output pin.
Port F is a bidirectional data port.
Logic-IN/
Push-Pull OUT
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DAEWOO ELECTRONICS CO., LTD.
DAEWOO [ DAEWOO SEMICONDUCTOR ]
