P89LPC924 Philips Semiconductors, P89LPC924 Datasheet - Page 6

• Manufacturer Part Number: P89LPC924
• Description: (P89LPC924 / P89LPC925) 8-bit microcontrollers
• Manufacturer: Philips Semiconductors

Philips Semiconductors
Table 3:
9397 750 14471
Product data
Symbol
P0.0 - P0.7
Pin description
Pin
1, 20, 19,
18, 17, 16,
14, 13
1
20
19
18
17
16
14
13
5.2 Pin description
Type
I/O
I/O
O
I
I/O
I
I
I
I/O
I
I
I
I/O
I
I
I
I/O
I
I
I
I
I/O
I
I
I/O
O
I
I/O
I/O
I
Description
Port 0: Port 0 is an 8-bit I/O port with a user-configurable output type. During reset
Port 0 latches are configured in the input only mode with the internal pull-up disabled.
The operation of Port 0 pins as inputs and outputs depends upon the port configuration
selected. Each port pin is configured independently. Refer to
configurations”
The Keypad Interrupt feature operates with Port 0 pins.
All pins have Schmitt triggered inputs.
Port 0 also provides various special functions as described below:
P0.0 — Port 0 bit 0.
CMP2 — Comparator 2 output.
KBI0 — Keyboard input 0.
P0.1 — Port 0 bit 1.
CIN2B — Comparator 2 positive input B.
KBI1 — Keyboard input 1.
AD10 — ADC1 channel 0 analog input.
P0.2 — Port 0 bit 2.
CIN2A — Comparator 2 positive input A.
KBI2 — Keyboard input 2.
AD11 — ADC1 channel 1analog input.
P0.3 — Port 0 bit 3.
CIN1B — Comparator 1 positive input B.
KBI3 — Keyboard input 3.
AD12 — ADC1 channel 2 analog input.
P0.4 — Port 0 bit 4.
CIN1A — Comparator 1 positive input A.
KBI4 — Keyboard input 4.
AD13 — ADC1 channel 3 analog input.
DAC1 — Digital-to-analog converter output 1.
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.
Rev. 03 — 15 December 2004
and
8-bit microcontrollers with accelerated two-clock 80C51 core
Table 8 “DC electrical characteristics”
P89LPC924/925
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
for details.
Section 8.13.1 “Port
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