參數(shù)資料
型號: P89LPC921FDH,518
廠商: NXP Semiconductors
文件頁數(shù): 43/46頁
文件大?。?/td> 0K
描述: IC 80C51 MCU 4KB FLASH 20TSSOP
標(biāo)準(zhǔn)包裝: 2,500
系列: LPC900
核心處理器: 8051
芯體尺寸: 8-位
速度: 18MHz
連通性: I²C,UART/USART
外圍設(shè)備: 欠壓檢測/復(fù)位,LED,POR,PWM,WDT
輸入/輸出數(shù): 18
程序存儲器容量: 4KB(4K 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: 20-TSSOP(0.173",4.40mm 寬)
包裝: 帶卷 (TR)
Philips Semiconductors
P89LPC920/921/922/9221
8-bit microcontrollers with two-clock 80C51 core
Product data
Rev. 08 — 15 December 2004
6 of 46
9397 750 14469
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
5.2 Pin description
Table 3:
Pin description
Symbol
Pin
Type
Description
P0.0 to P0.7
I/O
Port 0: Port 0 is an 8-bit I/O port with a user-congurable output type. During reset
Port 0 latches are congured in the input only mode with the internal pull-up disabled.
The operation of Port 0 pins as inputs and outputs depends upon the port conguration
selected. Each port pin is congured independently. Refer to Section 8.12.1 “Port
The Keypad Interrupt feature operates with Port 0 pins.
All pins have Schmitt triggered inputs.
Port 0 also provides various special functions as described below:
1
I/O
P0.0 — Port 0 bit 0.
O
CMP2 — Comparator 2 output.
I
KBI0 — Keyboard input 0.
20
I/O
P0.1 — Port 0 bit 1.
I
CIN2B — Comparator 2 positive input B.
I
KBI1 — Keyboard input 1.
19
I/O
P0.2 — Port 0 bit 2.
I
CIN2A — Comparator 2 positive input A.
I
KBI2 — Keyboard input 2.
18
I/O
P0.3 — Port 0 bit 3. High current source (P89LPC9221).
I
CIN1B — Comparator 1 positive input B.
I
KBI3 — Keyboard input 3.
17
I/O
P0.4 — Port 0 bit 4. High current source (P89LPC9221).
I
CIN1A — Comparator 1 positive input A.
I
KBI4 — Keyboard input 4.
16
I/O
P0.5 — Port 0 bit 5. High current source (P89LPC9221).
I
CMPREF — Comparator reference (negative) input.
I
KBI5 — Keyboard input 5.
14
I/O
P0.6 — Port 0 bit 6. High current source (P89LPC9221).
O
CMP1 — Comparator 1 output.
I
KBI6 — Keyboard input 6.
13
I/O
P0.7 — Port 0 bit 7. High current source (P89LPC9221).
I/O
T1 — Timer/counter 1 external count input or overow output.
I
KBI7 — Keyboard input 7.
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