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기능 8-bit microcontrollers with two-clock 80C51 core 2 kB/4 kB/8 kB 3 V low-power Flash with 256-byte data RAM
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P89LPC922FDH 데이터시트, 핀배열, 회로
P89LPC920/921/922
8-bit microcontrollers with two-clock 80C51 core
2 kB/4 kB/8 kB 3 V low-power Flash with 256-byte data RAM
Rev. 06 — 21 November 2003
Product data
1. General description
The P89LPC920/921/922 are single-chip microcontrollers designed for applications
demanding high-integration, low cost solutions over a wide range of performance
requirements. The P89LPC920/921/922 is based on a high performance processor
architecture that executes instructions in two to four clocks, six times the rate of
standard 80C51 devices. Many system-level functions have been incorporated into
the P89LPC920/921/922 in order to reduce component count, board space, and
system cost.
2. Features
2.1 Principal features
s 2 kB/4 kB/8 kB Flash code memory with 1 kB erasable sectors, 64-byte erasable
page size, and single byte erase.
s 256-byte RAM data memory.
s Two 16-bit counter/timers. Each timer may be configured to toggle a port output
upon timer overflow or to become a PWM output.
s Real-Time clock that can also be used as a system timer.
s Two analog comparators with selectable inputs and reference source.
s Enhanced UART with fractional baud rate generator, break detect, framing error
detection, automatic address detection and versatile interrupt capabilities.
s 400 kHz byte-wide I2C-bus communication port.
s Configurable on-chip oscillator with frequency range and RC oscillator options
(selected by user programmed Flash configuration bits). The RC oscillator option
allows operation without external oscillator components. Oscillator options
support frequencies from 20 kHz to the maximum operating frequency of 12 MHz.
The RC oscillator option is selectable and fine tunable.
s 2.4 V to 3.6 V VDD operating range. I/O pins are 5 V tolerant (may be pulled up or
driven to 5.5 V).
s 15 I/O pins minimum. Up to 18 I/O pins while using on-chip oscillator and reset
options.
2.2 Additional features
s 20-pin TSSOP and DIP packages.
s A high performance 80C51 CPU provides instruction cycle times of 167 ns to
333 ns for all instructions except multiply and divide when executing at 12 MHz.
This is 6 times the performance of the standard 80C51 running at the same clock
frequency. A lower clock frequency for the same performance results in power
savings and reduced EMI.




P89LPC922FDH pdf, 반도체, 판매, 대치품
Philips Semiconductors
4. Block diagram
P89LPC920/921/922
8-bit microcontrollers with two-clock 80C51 core
P89LPC920/921/922
HIGH PERFORMANCE
ACCELERATED 2-CLOCK 80C51 CPU
2 kB/4 kB/8 kB
CODE FLASH
256-BYTE
DATA RAM
INTERNAL BUS
PORT 3
CONFIGURABLE I/Os
PORT 1
CONFIGURABLE I/Os
PORT 0
CONFIGURABLE I/Os
UART
REAL-TIME CLOCK/
SYSTEM TIMER
I2C
TIMER 0
TIMER 1
WATCHDOG TIMER
AND OSCILLATOR
CRYSTAL
OR
RESONATOR
Fig 1. Block diagram.
KEYPAD
INTERRUPT
PROGRAMMABLE
OSCILLATOR DIVIDER
CONFIGURABLE
OSCILLATOR
CPU
CLOCK
ON-CHIP
RC
OSCILLATOR
ANALOG
COMPARATORS
POWER MONITOR
(POWER-ON RESET,
BROWNOUT RESET)
002aaa410
9397 750 12285
Product data
Rev. 06 — 21 November 2003
© Koninklijke Philips Electronics N.V. 2003. All rights reserved.
4 of 45

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P89LPC922FDH 전자부품, 판매, 대치품
Philips Semiconductors
P89LPC920/921/922
8-bit microcontrollers with two-clock 80C51 core
Table 3: Pin description…continued
Symbol
Pin
Type Description
P1.0 - P1.7
12, 11, 10,
9, 8, 4, 3,
2
I/O, I [1] Port 1: Port 1 is an 8-bit I/O port with a user-configurable output type, except for three
pins as noted below. During reset Port 1 latches are configured in the input only mode
with the internal pull-up disabled. The operation of the configurable Port 1 pins as inputs
and outputs depends upon the port configuration selected. Each of the configurable
port pins are programmed independently. Refer to Section 8.12.1 “Port configurations”
and Table 8 “DC electrical characteristics” for details. P1.2 - P1.3 are open drain when
used as outputs. P1.5 is input only.
All pins have Schmitt triggered inputs.
Port 1 also provides various special functions as described below:
12 I/O P1.0 — Port 1 bit 0.
O TXD — Transmitter output for the serial port.
11 I/O P1.1 — Port 1 bit 1.
I RXD — Receiver input for the serial port.
10 I/O P1.2 — Port 1 bit 2 (open-drain when used as output).
I/O T0 — Timer/counter 0 external count input or overflow output (open-drain when used as
output).
I/O SCL — I2C serial clock input/output.
9 I/O P1.3 — Port 1 bit 3 (open-drain when used as output).
I INT0 — External interrupt 0 input.
I/O SDA — I2C serial data input/output.
8 I/O P1.4 — Port 1 bit 4.
I INT1 — External interrupt 1 input.
4 I P1.5 — Port 1 bit 5 (input only).
I RST — External Reset input (if selected via FLASH configuration). A LOW on this pin
resets the microcontroller, causing I/O ports and peripherals to take on their default
states, and the processor begins execution at address 0.
3 I/O P1.6 — Port 1 bit 6.
2 I/O P1.7 — Port 1 bit 7.
9397 750 12285
Product data
Rev. 06 — 21 November 2003
© Koninklijke Philips Electronics N.V. 2003. All rights reserved.
7 of 45

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8-bit microcontrollers with two-clock 80C51 core 2 kB/4 kB/8 kB 3 V low-power Flash with 256-byte data RAM

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