參數(shù)資料
型號: P89LPC9402FBD,557
廠商: NXP Semiconductors
文件頁數(shù): 24/60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: 935288631557
P89LPC9402_1
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 01 — 22 April 2009
30 of 60
NXP Semiconductors
P89LPC9402
8-bit microcontroller with accelerated two-clock 80C51 core
7.21 I2C-bus serial interface
The 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
Multi master 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 9. The P89LPC9402 device provides a
byte-oriented I2C-bus interface that supports data transfers up to 400 kHz.
Fig 9.
I2C-bus conguration
OTHER DEVICE
WITH I2C-BUS
INTERFACE
SDA
SCL
RP
OTHER DEVICE
WITH I2C-BUS
INTERFACE
P1.3/SDA
P1.2/SCL
P89LPC9402
I2C-bus
002aae474
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