參數(shù)資料
型號: P89LPC9401FBD,557
廠商: NXP Semiconductors
文件頁數(shù): 14/59頁
文件大?。?/td> 0K
描述: IC 80C51 MCU FLASH 8K 64-LQFP
標(biāo)準(zhǔn)包裝: 450
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/復(fù)位,LCD,LED,POR,PWM,WDT
輸入/輸出數(shù): 23
程序存儲器容量: 8KB(8K x 8)
程序存儲器類型: 閃存
RAM 容量: 256 x 8
電壓 - 電源 (Vcc/Vdd): 2.4 V ~ 3.6 V
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 64-LQFP
包裝: 托盤
其它名稱: 935278626557
P89LPC9401_1
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Preliminary data sheet
Rev. 01 — 5 September 2005
21 of 59
Philips Semiconductors
P89LPC9401
8-bit two-clock 80C51 microcontroller with 32 segment
× 4 LCD driver
7.13 I/O ports
The P89LPC9401 has four I/O ports: Port 0 and Port 1 are 8-bit ports. Port 2 is a 5-bit
port. Port 3 is a 2-bit port. The exact number of I/O pins available depends upon the clock
and reset options chosen, as shown in Table 6.
[1]
Required for operation above 12 MHz.
7.13.1 Port congurations
All but three I/O port pins on the P89LPC9401 may be congured by software to one of
four types on a bit-by-bit basis. These are: quasi-bidirectional (standard 80C51 port
outputs), push-pull, open drain, and input-only. Two conguration registers for each port
select the output type for each port pin.
Fig 7.
Interrupt sources, interrupt enables, and power-down wake-up sources
002aab464
IE0
EX0
IE1
EX1
BOF
EBO
KBIF
EKBI
interrupt
to CPU
wake-up
(if in power-down)
EWDRT
CMF2
CMF1
EC
EA (IE0.7)
TF1
ET1
TI and RI/RI
ES/ESR
TI
EST
SI
EI2C
SPIF
ESPI
RTCF
ERTC
(RTCCON.1)
WDOVF
TF0
ET0
Table 6:
Number of I/O pins available
Clock source
Reset option
Number of I/O pins
(not including LCD
pins)
On-chip oscillator or watchdog oscillator
No external reset (except during power-up)
23
External RST pin supported
22
External clock input
No external reset (except during power-up)
22
External RST pin supported [1]
21
Low/medium/high speed oscillator
(external crystal or resonator)
No external reset (except during power-up)
21
External RST pin supported [1]
20
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