P89LPC932BA View Datasheet(PDF) - Philips Electronics
Part Name
Description
Manufacturer
P89LPC932BA
Philips Electronics
P89LPC932BA Datasheet PDF : 60 Pages
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Philips Semiconductors
P89LPC932
8-bit microcontroller with accelerated two-clock 80C51 core
Table 3: Pin description…continued
Symbol
Pin
Type
TSSOP, HVQFN
PLCC
P3.0 - P3.1 9, 8
5, 4
I/O
9
5
I/O
O
O
8
4
I/O
I
VSS
7
3
I
VDD
21
17
I
Description
Port 3: Port 3 is a 2-bit I/O port with a user-configurable output type. During
reset Port 3 latches are configured in the input only mode with the internal
pull-up disabled. The operation of Port 3 pins as inputs and outputs depends
upon the port configuration selected. Each port pin is configured
independently. Refer to Section 8.12.1 “Port configurations” and Table 8 “DC
electrical characteristics” for details.
All pins have Schmitt triggered inputs.
Port 3 also provides various special functions as described below:
P3.0 — Port 3 bit 0.
XTAL2 — Output from the oscillator amplifier (when a crystal oscillator option
is selected via the FLASH configuration.
CLKOUT — CPU clock divided by 2 when enabled via SFR bit (ENCLK -
TRIM.6). It can be used if the CPU clock is the internal RC oscillator,
watchdog oscillator or external clock input, except when XTAL1/XTAL2 are
used to generate clock source for the Real-Time clock/system timer.
P3.1 — Port 3 bit 1.
XTAL1 — Input to the oscillator circuit and internal clock generator circuits
(when selected via the FLASH configuration). It can be a port pin if internal
RC oscillator or watchdog oscillator is used as the CPU clock source, and if
XTAL1/XTAL2 are not used to generate the clock for the Real-Time
clock/system timer.
Ground: 0 V reference.
Power Supply: This is the power supply voltage for normal operation as well
as Idle and Power-Down modes.
[1] Input/Output for P1.0-P1.4, P1.6, P1.7. Input for P1.5.
9397 750 12379
Product data
Rev. 04 — 06 January 2004
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
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