参数资料
型号: C8051F002R
厂商: Silicon Laboratories Inc
文件页数: 18/171页
文件大小: 0K
描述: IC 8051 MCU 32K FLASH 32LQFP
标准包装: 1
系列: C8051F00x
核心处理器: 8051
芯体尺寸: 8-位
速度: 20MHz
连通性: SMBus(2 线/I²C),SPI,UART/USART
外围设备: 欠压检测/复位,POR,PWM,温度传感器,WDT
输入/输出数: 8
程序存储器容量: 32KB(32K x 8)
程序存储器类型: 闪存
RAM 容量: 256 x 8
电压 - 电源 (Vcc/Vdd): 2.7 V ~ 3.6 V
数据转换器: A/D 4x12b; D/A 2x12b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 32-LQFP
包装: 剪切带 (CT)
其它名称: 336-1002-1
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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