p89lpc932ba NXP Semiconductors, p89lpc932ba Datasheet - Page 8

• Manufacturer Part Number: p89lpc932ba
• Description: P89lpc932 8-bit Microcontroller With Accelerated Two-clock 80c51 Core 8 Kb Flash With 512-byte Data Eeprom And 768-byte Ram
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Table 3:
9397 750 12379
Product data
Symbol
P1.0 - P1.7
Pin description
Pin
TSSOP,
PLCC
18, 17,
12, 11,
10, 6, 5,
4
18
17
12
11
10
6
5
4
HVQFN
14, 13, 8,
7, 6, 2, 1,
28
14
13
8
7
6
2
1
28
…continued
Type
I/O, I
I/O
O
I/O
I
I/O
I/O
I/O
I/O
I
I/O
I
I
I
I
I/O
O
I/O
O
[1]
Description
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
electrical characteristics”
outputs. P1.5 is input only.
All pins have Schmitt triggered inputs.
Port 1 also provides various special functions as described below:
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
P1.3 — Port 1 bit 3 (open-drain when used as output).
INT0 — External interrupt 0 input.
SDA — I
P1.4 — Port 1 bit 4.
INT1 — External interrupt 1 input.
P1.5 — Port 1 bit 5 (input only).
RST — External Reset input during power-on or if selected via UCFG1.
When functioning as a reset input, a LOW on this pin resets the
microcontroller, causing I/O ports and peripherals to take on their default
states, and the processor begins execution at address 0. Also used during a
power-on sequence to force In-System Programming mode.
P1.6 — Port 1 bit 6.
OCB — Output Compare B.
P1.7 — Port 1 bit 7.
OCC — Output Compare C.
Rev. 04 — 06 January 2004
8-bit microcontroller with accelerated two-clock 80C51 core
2
2
C serial clock input/output.
C serial data input/output.
Section 8.12.1 “Port configurations”
for details. P1.2 - P1.3 are open drain when used as
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
P89LPC932
and
Table 8 “DC
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