參數(shù)資料
型號(hào)： P89LPC972FN,129
廠商： NXP Semiconductors
文件頁數(shù)： 65/66頁
文件大小： 0K
描述： MCU 80C51 8KB FLASH 20DIP
標(biāo)準(zhǔn)包裝： 18
系列： LPC900
核心處理器： 8051
芯體尺寸： 8-位
速度： 18MHz
連通性： I²C，SPI，UART/USART
外圍設(shè)備： 欠壓檢測(cè)/復(fù)位，POR，PWM，WDT
輸入/輸出數(shù)： 18
程序存儲(chǔ)器容量： 8KB（8K x 8）
程序存儲(chǔ)器類型： 閃存
RAM 容量： 256 x 8
電壓 - 電源 (Vcc/Vdd)： 2.4 V ~ 5.5 V
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 85°C
封裝/外殼： 20-DIP（0.300"，7.62mm）
包裝： 管件
其它名稱： 568-8749-5
P89LPC972FN,129-ND
P89LPC97X
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 3 — 8 June 2010
8 of 66
NXP Semiconductors
P89LPC970/971/972
8-bit microcontroller with accelerated two-clock 80C51 core
P0.6/CMP1/KBI6
14
I/O
P0.6 — Port 0 bit 6. High current source.
O
CMP1 — Comparator 1 output.
I
KBI6 — Keyboard input 6.
P0.7/KBI7/T1
13
I/O
P0.7 — Port 0 bit 7. High current source.
I
KBI7 — Keyboard input 7.
I/O
T1 — Timer/counter 1 external count input or overflow output.
P1.0 to P1.7
I/O, I
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
P1.3 are open drain when used as outputs. P1.5 is input only.
All pins have Schmitt trigger inputs.
Port 1 also provides various special functions as described below:
P1.0/TXD
12
I/O
P1.0 — Port 1 bit 0.
O
TXD — Transmitter output for serial port.
P1.1/RXD/T2EX
11
I/O
P1.1 — Port 1 bit 1.
I
RXD — Receiver input for serial port.
I
T2EX — Timer/counter 2 external capture input.
P1.2/SCL/T0
10
I/O
P1.2 — Port 1 bit 2 (open-drain when used as output).
I/O
SCL — I2C-bus serial clock input/output.
I/O
T0 — Timer/counter 0 external count input or overflow output. (open-drain when
used as output.)
P1.3/INT0/SDA/
T4
9I/O
P1.3 — Port 1 bit 3 (open-drain when used as output).
I
INT0 — External interrupt 0 input.
I/O
SDA — I2C-bus serial data input/output.
I/O
T4 — Timer/counter 4 external count input or overflow output.
P1.4/INT1/T4EX/
SS
8I/O
P1.4 — Port 1 bit 4. High current source.
I
INT1 — External interrupt 1 input.
I
T4EX — Timer/counter 4 external capture input.
I
SS — SPI Slave select input (pin remap).
P1.5/RST
4I
P1.5 — Port 1 bit 5 (input only).
I
RST — External Reset input during power-on or if selected via UCFG1. When
functioning as a reset input, 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. Also used during a power-on sequence to force ISP mode.
P1.6/MISO
3
I/O
P1.6 — Port 1 bit 6. High current source.
I/O
MISO — SPI master in slave out. When configured as master, this pin is input,
when configured as slave, this pin is output (pin remap).
Table 3.
Pin description …continued
Symbol
Pin
Type
Description
DIP20,
TSSOP20
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