P89LPC931FDH NXP Semiconductors, P89LPC931FDH Datasheet - Page 9
P89LPC931FDH
Manufacturer Part Number
P89LPC931FDH
Description
MCU 8-Bit 89LP 80C51 CISC 8KB Flash 2.5V/3.3V 28-Pin TSSOP Tube
Manufacturer
NXP Semiconductors
Datasheet
1.P89LPC931FDH.pdf
(55 pages)
Specifications of P89LPC931FDH
Package
28TSSOP
Device Core
80C51
Family Name
89LP
Maximum Speed
18 MHz
Ram Size
256 Byte
Program Memory Size
8 KB
Operating Supply Voltage
2.5|3.3 V
Data Bus Width
8 Bit
Program Memory Type
Flash
Number Of Programmable I/os
26
Interface Type
I2C/SPI/UART
Operating Temperature
-40 to 85 °C
Number Of Timers
2
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Quantity
Price
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Philips Semiconductors
Table 3:
[1]
9397 750 14472
Product data
Symbol
P3.0 - P3.1
V
V
SS
DD
Input/Output for P1.0-P1.4, P1.6, P1.7. Input for P1.5.
Pin description
Pin
9, 8
9
8
7
21
…continued
Type
I/O
I/O
O
O
I/O
I
I
I
Description
Port 3: Port 3 is an 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
8.11.1 “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.
Rev. 05 — 15 December 2004
8-bit microcontrollers with two-clock 80C51 core
and
Table 7 “DC electrical characteristics”
P89LPC930/931
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
for details.
Section
9 of 55