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© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
User manual Rev. 02 — 23 May 2005 7 of 133
Philips Semiconductors
UM10109
P89LPC932A1 User manual
1.3 Pin description
Table 1: Pin description
Symbol Pin Type Description
TSSOP28,
PLCC28
HVQFN28
P0.0 to P0.7 3, 26, 25,
24, 23, 22,
20, 19
27, 22, 21,
20, 19, 18,
16, 15
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 4.1 “Port configurations” and
the P89LPC932A1 data sheet, Static characteristics 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:
327I/OP0.0 — Port 0 bit 0.
O CMP2 — Comparator 2 output.
I KBI0 — Keyboard input 0.
26 22 I/O P0.1 — Port 0 bit 1.
I CIN2B — Comparator 2 positive input B.
I KBI1 — Keyboard input 1.
25 21 I/O P0.2 — Port 0 bit 2.
I CIN2A — Comparator 2 positive input A.
I KBI2 — Keyboard input 2.
24 20 I/O P0.3 — Port 0 bit 3.
I CIN1B — Comparator 1 positive input B.
I KBI3 — Keyboard input 3.
23 19 I/O P0.4 — Port 0 bit 4.
I CIN1A — Comparator 1 positive input A.
I KBI4 — Keyboard input 4.
22 18 I/O P0.5 — Port 0 bit 5.
I CMPREF — Comparator reference (negative) input.
I KBI5 — Keyboard input 5.