NXP Semiconductors
P89LPC932A1
8-bit microcontroller with accelerated two-clock 80C51 core
Table 2.
Symbol
Pin description
…continued
Pin
TSSOP28, HVQFN28
PLCC28,
DIP28
Type Description
P0.4/ CIN1A/
KBI4
23
19
I/O
I
I
P0.4 —
Port 0 bit 4.
CIN1A —
Comparator 1 positive input A.
KBI4 —
Keyboard input 4.
P0.5 —
Port 0 bit 5.
CMPREF —
Comparator reference (negative) input.
KBI5 —
Keyboard input 5.
P0.6 —
Port 0 bit 6.
CMP1 —
Comparator 1 output.
KBI6 —
Keyboard input 6.
P0.7 —
Port 0 bit 7.
T1 —
Timer/counter 1 external count input or overflow output.
KBI7 —
Keyboard input 7.
P0.5/
CMPREF/
KBI5
P0.6/CMP1/
KBI6
22
18
I/O
I
I
20
16
I/O
O
I
P0.7/T1/KBI7
19
15
I/O
I/O
I
P1.0 to P1.7
I/O, I
Port 1:
Port 1 is an 8-bit I/O port with a user-configurable output type,
except for three pins as noted below. During reset Port 1 latches are
configured in the input only mode with the internal pull-up disabled. The
operation of the configurable Port 1 pins as inputs and outputs depends
upon the port configuration selected. Each of the configurable port pins
are programmed independently. Refer to
and
for details. P1.2 and
P1.3 are open drain when used as outputs. P1.5 is input only.
All pins have Schmitt trigger inputs.
Port 1 also provides various special functions as described below:
P1.0/TXD
P1.1/RXD
P1.2/T0/SCL
18
17
12
14
13
8
I/O
O
I/O
I
I/O
I/O
I/O
P1.0 —
Port 1 bit 0.
TXD —
Transmitter output for the serial port.
P1.1 —
Port 1 bit 1.
RXD —
Receiver input for the serial port.
P1.2 —
Port 1 bit 2 (open-drain when used as output).
T0 —
Timer/counter 0 external count input or overflow output (open-drain
when used as output).
SCL —
I
2
C serial clock input/output.
P1.3 —
Port 1 bit 3 (open-drain when used as output).
INT0 —
External interrupt 0 input.
SDA —
I
2
C serial data input/output.
P1.4 —
Port 1 bit 4.
INT1 —
External interrupt 1 input.
P1.3/INT0/
SDA
11
7
I/O
I
I/O
P1.4/INT1
10
6
I
I
P89LPC932A1_3
© NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 03 — 12 March 2007
8 of 64
PHILIPS [ NXP SEMICONDUCTORS ]
