1997 Apr 08
7
Philips Semiconductors
Product specification
8-bit microcontroller
P83C562; P80C562
6.2
Pin description
Table 1
To avoid latch-up at Power-on, the voltage at any pin at any time must lie within the range V
DD
+ 0.5 V to V
SS
0.5 V.
PLCC68 (SOT188-2)
SYMBOL
PIN
DESCRIPTION
V
DD
2
Power supply,
digital part (+5 V). Power supply pins during normal operation and
power reduction modes.
Start ADC operation:
Input starting analog-to-digital conversion (ADC operation can
also be started by software). This pin must not float.
Pulse Width Modulation output 0.
Pulse Width Modulation output 1.
Enable Watchdog Timer:
enable for Watchdog Timer and disable Power-down mode.
This pin must not float.
P4.0 to P4.5
: 8-bit quasi-bidirectional I/O port lines;
CMSR0 to CMSR5
: Compare and Set/Reset outputs for Timer T2.
STADC
3
PWM0
PWM1
EW
4
5
6
P4.0/CMSR0
to
P4.5/CMSR5
P4.6/CMT0
P4.7/CMT1
RST
P1.0/CT0I
to
P1.3/CT3I
P1.4/T2
7 to 12
13
14
15
P4.6 to P4.7:
8-bit quasi-bidirectional I/O port lines;
CMT0 to CMT1:
Compare and toggle outputs for Timer T2.
Reset:
Input to reset the P8x562; also generated when the Watchdog Timer overflows.
P1.0 to P1.3:
8-bit quasi-bidirectional I/O port lines;
CT0I to CT3I:
Capture timer inputs for Timer 2.
16 to 19
20
P1.4:
8-bit quasi-bidirectional I/O port line;
T2:
T2 event input (rising edge triggered).
P1.5:
8-bit quasi-bidirectional I/O port line;
RT2:
T2 timer reset input (rising edge triggered)
P1.6 to P1.7:
8-bit quasi-bidirectional I/O port lines, open-drain.
P3.0:
8-bit quasi-bidirectional I/O port line;
RXD:
Serial input port.
P3.1:
8-bit quasi-bidirectional I/O port line;
TXD:
Serial output port.
P3.2:
8-bit quasi-bidirectional I/O port line;
INT0:
External interrupt input 0.
P3.3:
8-bit quasi-bidirectional I/O port line;
INT1:
External interrupt input 1.
P3.4:
8-bit quasi-bidirectional I/O port line;
T0:
Timer 0 external input.
P3.5:
8-bit quasi-bidirectional I/O port line;
T1:
Timer 1 external input.
P3.6:
8-bit quasi-bidirectional I/O port line;
WR:
External Data Memory Write strobe.
P3.7:
8-bit quasi-bidirectional I/O port line;
RD:
External Data Memory Read strobe.
Not connected.
Crystal Oscillator Output:
output of the inverting amplifier that forms the oscillator.
Left open-circuit when an external oscillator clock is used.
P1.5/RT2
21
P1.6 to P1.7
P3.0/RXD
22 to 23
24
P3.1/TXD
25
P3.2/INT0
26
P3.3/INT1
27
P3.4/T0
28
P3.5/T1
29
P3.6/WR
30
P3.7/RD
31
n.c.
XTAL2
32, 33
34