参数资料
型号: C8051F305-GMR
厂商: Silicon Laboratories Inc
文件页数: 30/178页
文件大小: 0K
描述: IC 8051 MCU 2K FLASH 11QFN
产品培训模块: Serial Communication Overview
标准包装: 1,500
系列: C8051F30x
核心处理器: 8051
芯体尺寸: 8-位
速度: 25MHz
连通性: SMBus(2 线/I²C),UART/USART
外围设备: POR,PWM,WDT
输入/输出数: 8
程序存储器容量: 2KB(2K 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
振荡器型: 外部
工作温度: -40°C ~ 85°C
封装/外壳: 10-VFDFN 裸露焊盘
包装: 带卷 (TR)
配用: 336-1444-ND - ADAPTER PROGRAM TOOLSTICK F300
Rev. 2.9
125
C8051F300/1/2/3/4/5
13.5.3. Slave Receiver Mode
Serial data is received on SDA and the clock is received on SCL. When slave events are enabled (INH =
0), the interface enters Slave Receiver Mode when a START followed by a slave address and direction bit
(WRITE in this case) is received. Upon entering Slave Receiver Mode, an interrupt is generated and the
ACKRQ bit is set. Software responds to the received slave address with an ACK, or ignores the received
slave address with a NACK. If the received slave address is ignored, slave interrupts will be inhibited until
the next START is detected. If the received slave address is acknowledged, zero or more data bytes are
received. Software must write the ACK bit after each received byte to ACK or NACK the received byte. The
interface exits Slave Receiver Mode after receiving a STOP. Note that the interface will switch to Slave
Transmitter Mode if SMB0DAT is written while an active Slave Receiver; see Section 13.5.4 for details on
this procedure. Figure 13.7 shows a typical Slave Receiver sequence. Two received data bytes are shown,
though any number of bytes may be received. Notice that the ‘data byte transferred’ interrupts occur
before the ACK cycle in this mode.
P
W
SLA
S
Data Byte
A
S = START
P = STOP
A = ACK
R = READ
SLA = Slave Address
Received by SMBus
Interface
Transmitted by
SMBus Interface
Interrupt
Figure 13.7. Typical Slave Receiver Sequence
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