Philips P89LPC938, User Manual

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© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
User manual Rev. 03 — 7 June 2005 5 of 139
Philips Semiconductors
UM10119
P89LPC938 User manual
1.2 Pin description
Table 1: Pin description
Symbol Pin Type Description
TSSOP28,
PLCC28 HVQFN28
P0.0 to P0.7 I/O 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
Section 5.1 “Port configurations” on
page 34 for details.
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/CMP2/
KBI0/AD05 3 27 I/O P0.0 — Port 0 bit 0.
O CMP2 — Comparator 2 output.
I KBI0 — Keyboard input 0.
I AD05 — ADC0 channel 5 analog input.
P0.1/CIN2B/
KBI1/AD00 26 22 I/O P0.1 — Port 0 bit 1.
I CIN2B — Comparator 2 positive input B.
I KBI1 — Keyboard input 1.
I AD00 — ADC0 channel 0 analog input.
P0.2/CIN2A/
KBI2/AD01 25 21 I/O P0.2 — Port 0 bit 2.
I CIN2A — Comparator 2 positive input A.
I KBI2 — Keyboard input 2.
I AD01 — ADC0 channel 1 analog input.
P0.3/CIN1B/
KBI3/AD02 24 20 I/O P0.3 — Port 0 bit 3.
I CIN1B — Comparator 1 positive input B.
I KBI3 — Keyboard input 3.
I AD02 — ADC0 channel 2 analog input.
P0.4/CIN1A/
KBI4/AD03 23 19 I/O P0.4 — Port 0 bit 4.
I CIN1A — Comparator 1 positive input A.
I KBI4 — Keyboard input 4.
I AD03 — ADC0 channel 3 analog input.
P0.5/CMPREF/
KBI5 22 18 I/O P0.5 — Port 0 bit 5.
I CMPREF — Comparator reference (negative) input.
I KBI5 — Keyboard input 5.