參數(shù)資料
型號: P89LPC9221FN,112
廠商: NXP Semiconductors
文件頁數(shù): 20/46頁
文件大?。?/td> 0K
描述: IC 80C51 MCU FLASH 8K 20-DIP
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,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: 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: 20-DIP(0.300",7.62mm)
包裝: 管件
配用: 622-1014-ND - BOARD FOR LPC9XX TSSOP
622-1010-ND - BOARD FOR LPC922 TSSOP
622-1008-ND - BOARD FOR LPC9103 10-HVSON
622-1006-ND - SOCKET ADAPTER BOARD
568-1759-ND - EMULATOR DEBUGGER/PROGRMMR LPC9X
其它名稱: 568-3224-5
935277592112
P89LPC9221FN
Philips Semiconductors
P89LPC920/921/922/9221
8-bit microcontrollers with two-clock 80C51 core
Product data
Rev. 08 — 15 December 2004
27 of 46
9397 750 14469
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
8.19 I2C-bus serial interface
I2C-bus uses two wires (SDA and SCL) to transfer information between devices
connected to the bus, and it has the following features:
Bidirectional data transfer between masters and slaves
Multimaster bus (no central master)
Arbitration between simultaneously transmitting masters without corruption of
serial data on the bus
Serial clock synchronization allows devices with different bit rates to communicate
via one serial bus
Serial clock synchronization can be used as a handshake mechanism to suspend
and resume serial transfer
The I2C-bus may be used for test and diagnostic purposes.
A typical I2C-bus conguration is shown in Figure 8. The P89LPC920/921/922/9221
device provides a byte-oriented I2C-bus interface that supports data transfers up to
400 kHz.
Fig 8.
I2C-bus conguration.
OTHER DEVICE
WITH I2C-BUS
INTERFACE
SDA
SCL
RP
OTHER DEVICE
WITH I2C-BUS
INTERFACE
P1.3/SDA
P1.2/SCL
P89LPC920/921/922
I2C-BUS
002aaa420
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