参数资料
型号: P89LPC9221FDH,518
厂商: NXP Semiconductors
文件页数: 43/46页
文件大小: 0K
描述: IC 80C51 MCU 8KB FLASH 20TSSOP
标准包装: 2,500
系列: LPC900
核心处理器: 8051
芯体尺寸: 8-位
速度: 18MHz
连通性: I²C,UART/USART
外围设备: 欠压检测/复位,LED,POR,PWM,WDT
输入/输出数: 18
程序存储器容量: 8KB(8K x 8)
程序存储器类型: 闪存
RAM 容量: 256 x 8
电压 - 电源 (Vcc/Vdd): 2.4 V ~ 3.6 V
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 20-TSSOP(0.173",4.40mm 宽)
包装: 带卷 (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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