I2 C MASTER MO" />
參數(shù)資料
型號: PIC18F2520-I/SO
廠商: Microchip Technology
文件頁數(shù): 31/151頁
文件大小: 0K
描述: IC MCU FLASH 16KX16 28SOIC
產(chǎn)品培訓(xùn)模塊: Asynchronous Stimulus
8-bit PIC® Microcontroller Portfolio
標(biāo)準(zhǔn)包裝: 27
系列: PIC® 18F
核心處理器: PIC
芯體尺寸: 8-位
速度: 40MHz
連通性: I²C,SPI,UART/USART
外圍設(shè)備: 欠壓檢測/復(fù)位,HLVD,POR,PWM,WDT
輸入/輸出數(shù): 25
程序存儲器容量: 32KB(16K x 16)
程序存儲器類型: 閃存
EEPROM 大?。?/td> 256 x 8
RAM 容量: 1.5K x 8
電壓 - 電源 (Vcc/Vdd): 4.2 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 10x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 28-SOIC(0.295",7.50mm 寬)
包裝: 管件
產(chǎn)品目錄頁面: 643 (CN2011-ZH PDF)
配用: XLT28SO-1-ND - SOCKET TRANSITION 28SOIC 300MIL
MCP3909RD-3PH1-ND - REF DESIGN MCP3909 3PH ENGY MTR
2011-2012 Microchip Technology Inc.
Preliminary
DS41579C-page 299
PIC16(L)F1782/3
26.6.5
I2
C MASTER MODE REPEATED
START CONDITION TIMING
A Repeated Start condition occurs when the RSEN bit
of the SSPCON2 register is programmed high and the
master state machine is no longer active. When the
RSEN bit is set, the SCL pin is asserted low. When the
SCL pin is sampled low, the Baud Rate Generator is
loaded and begins counting. The SDA pin is released
(brought high) for one Baud Rate Generator count
(TBRG). When the Baud Rate Generator times out, if
SDA is sampled high, the SCL pin will be deasserted
(brought high). When SCL is sampled high, the Baud
Rate Generator is reloaded and begins counting. SDA
and SCL must be sampled high for one TBRG. This
action is then followed by assertion of the SDA pin
(SDA = 0) for one TBRG while SCL is high. SCL is
asserted low. Following this, the RSEN bit of the
SSPCON2 register will be automatically cleared and
the Baud Rate Generator will not be reloaded, leaving
the SDA pin held low. As soon as a Start condition is
detected on the SDA and SCL pins, the S bit of the
SSPSTAT register will be set. The SSPIF bit will not be
set until the Baud Rate Generator has timed out.
FIGURE 26-27:
REPEAT START CONDITION WAVEFORM
Note 1:
If RSEN is programmed while any other
event is in progress, it will not take effect.
2:
A bus collision during the Repeated Start
condition occurs if:
SDA is sampled low when SCL
goes from low-to-high.
SCL goes low before SDA is
asserted low. This may indicate
that another master is attempting
to transmit a data ‘1’.
SDA
SCL
Repeated Start
Write to SSPCON2
Write to SSPBUF occurs here
At completion of Start bit,
hardware clears RSEN bit
1st bit
S bit set by hardware
TBRG
SDA = 1,
SCL (no change)
SCL = 1
occurs here
TBRG
and sets SSPIF
Sr
相關(guān)PDF資料
PDF描述
ATMEGA329V-8MI IC AVR MCU 32K 8MHZ 64-QFN
PIC18F67J60-I/PT IC PIC MCU FLASH 64KX16 64TQFP
ATMEGA329V-8AI IC AVR MCU 32K 8MHZ 64TQFP
PIC18LF6490-I/PT IC PIC MCU FLASH 8KX16 64TQFP
ATMEGA329-16MI IC AVR MCU 32K 16MHZ 64-QFN
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PIC18F2520T-E/SO 功能描述:8位微控制器 -MCU 32KB Flash 1536RAM 23I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
PIC18F2520T-I/ML 功能描述:8位微控制器 -MCU 32KB 3968 RAM 25I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
PIC18F2520T-I/SO 功能描述:8位微控制器 -MCU 32KB 3968 RAM 25I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
PIC18F2523-E/ML 功能描述:8位微控制器 -MCU 32KB FL 1536bytes- RAM 25I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
PIC18F2523-E/SO 功能描述:8位微控制器 -MCU 32KB FL 1536bytes- RAM 25I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT