P89LPC913 PHILIPS [NXP Semiconductors], P89LPC913 Datasheet - Page 9

• Manufacturer Part Number: P89LPC913
• Description: 8-bit microcontrollers with two-clock 80C51 core 1 kB 3 V Flash with 128-byte RAM
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
Table 3:
9397 750 14468
Product data
Symbol
P2.2 to P2.5
P3.0 to P3.1
V
V
SS
DD
P89LPC912 pin description
7
Pin
1
14
9
2
8
4
10
Type
I/O
I/O
I/O
I/O
I/O
I/O
I
I/O
I/O
I/O
I/O
O
O
I/O
I
I
I
Description
Port 2: Port 2 is a 4-bit I/O port with a user-configurable output type. During reset
Port 2 latches are configured in the input only mode with the internal pull-up disabled.
The operation of Port 2 pins as inputs and outputs depends upon the port
configuration selected. Each port pin is configured independently. Refer to
9.11.1 “Port configurations”
All pins have Schmitt triggered inputs.
Port 2 also provides various special functions as described below:
P2.2 — Port 2 bit 2.
MOSI — SPI master out slave in. When configured as master, this pin is output, when
configured as slave, this pin is input.
P2.3 — Port 2 bit 3.
MISO — SPI master in slave out. When configured as master, this pin is input, when
configured as slave, this pin is output.
P2.4 — Port 2 bit 4.
SS — SPI Slave select.
P2.5 — Port 2 bit 5.
SPICLK — SPI clock. When configured as master, this pin is output, when configured
as slave, this pin is input.
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
9.11.1 “Port configurations”
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.
…continued
Rev. 03 — 17 December 2004
and
and
8-bit microcontrollers with two-clock 80C51 core
Table 13 “DC electrical characteristics”
Table 13 “DC electrical characteristics”
P89LPC912/913/914
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
for details.
for details.
Section
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