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MDT2005
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P. 2
VER1.1
u On-chip RC oscillator based Watchdog Timer(WDT) can be operated freely
u 12 I/O pins with their own independent direction control
3. Applications
The application areas of this MDT2005 range from appliance motor control and high speed
automotive
to
low
power
remote
transmitters/receivers,
pointing
devices,
and
telecommunications processors, such as Remote controller, small instruments, chargers, toy,
automobile and PC peripheral … etc.
4. Pin Assignment
PA2 1
18
PA1
PA3 2
17
PA0
RTCC 3
16
OSC1
/MCLR 4
15
OSC2
Vss 5
14
Vdd
PB0 6
13
PB7
PB1 7
12
PB6
PB2 8
11
PB5
PB3 9
10
PB4
5. Pin Function Description
Pin Name
I/O
Function Description
PA0~PA3
I/O
Port A, TTL input level
PB0~PB7
I/O
Port B, TTL input level
RTCC
I
Real Time Clock/Counter, Schmitt Trigger input levels
/MCLR
I
Master Clear, Schmitt Trigger input levels
OSC1
I
Oscillator Input
OSC2
O
Oscillator Output
Vdd
Power supply
Vss
Ground