參數(shù)資料
型號: C8051F002-GQR
廠商: Silicon Laboratories Inc
文件頁數(shù): 18/171頁
文件大?。?/td> 0K
描述: IC 8051 MCU 32K FLASH 32LQFP
產(chǎn)品培訓模塊: Serial Communication Overview
標準包裝: 500
系列: C8051F00x
核心處理器: 8051
芯體尺寸: 8-位
速度: 20MHz
連通性: SMBus(2 線/I²C),SPI,UART/USART
外圍設備: 欠壓檢測/復位,POR,PWM,溫度傳感器,WDT
輸入/輸出數(shù): 8
程序存儲器容量: 32KB(32K x 8)
程序存儲器類型: 閃存
RAM 容量: 256 x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 4x12b; D/A 2x12b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 32-LQFP
包裝: 帶卷 (TR)
配用: 336-1246-ND - DEV KIT F300/301/302/303/304/305
C8051F000/1/2/5/6/7
C8051F010/1/2/5/6/7
Figure 16.2 shows a typical SMBus configuration. The SMBus interface will work at any voltage between 3.0V
and 5.0V and different devices on the bus may operate at different voltage levels. The SCL (serial clock) and SDA
(serial data) lines are bi-directional. They must be connected to a positive power supply voltage through a pull-up
resistor or similar circuit. When the bus is free, both lines are pulled high. Every device connected to the bus must
have an open-drain or open-collector output for both the SCL and SDA lines. The maximum number of devices on
the bus is limited only by the requirement that the rise and fall times on the bus will not exceed 300ns and 1000ns,
respectively.
Figure 16.2. Typical SMBus Configuration
VDD = 5V
Master
Device
Slave
Device 1
Slave
Device 2
VDD = 3V
VDD = 5V
VDD = 3V
SDA
SCL
16.1.
Supporting Documents
It is assumed the reader is familiar with or has access to the following supporting documents:
1.
The I
2C-bus and how to use it (including specifications), Philips Semiconductor.
2.
The I
2C-Bus Specification -- Version 2.0, Philips Semiconductor.
3.
System Management Bus Specification -- Version 1.1, SBS Implementers Forum.
Rev. 1.7
114
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