参数资料
型号: C8051F226R
厂商: Silicon Laboratories Inc
文件页数: 17/146页
文件大小: 0K
描述: IC 8051 MCU 8K FLASH 48TQFP
标准包装: 1
系列: C8051F2xx
核心处理器: 8051
芯体尺寸: 8-位
速度: 25MHz
连通性: SPI,UART/USART
外围设备: 欠压检测/复位,POR,WDT
输入/输出数: 32
程序存储器容量: 8KB(8K x 8)
程序存储器类型: 闪存
RAM 容量: 1.25K x 8
电压 - 电源 (Vcc/Vdd): 2.7 V ~ 3.6 V
数据转换器: A/D 32x8b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 48-TQFP
包装: 剪切带 (CT)
其它名称: 336-1010-1
C8051F2xx
Rev. 1.6
113
Multiple masters may reside on the same bus. A Mode Fault flag (MODF, SPI0CN.5) is set to logic 1 when
the SPI is configured as a master (MSTEN = 1) and its slave select signal NSS is pulled low. When the
Mode Fault flag is set, the MSTEN and SPIEN bits of the SPI control register are cleared by hardware,
thereby placing the SPI module in an "off-line" state. In a multiple-master environment, the system control-
ler should check the state of the SLVSEL flag (SPI0CN.2) to ensure the bus is free before setting the
MSTEN bit and initiating a data transfer.
15.2. Serial Clock Timing
As shown in Figure 15.4, four combinations of serial clock phase and polarity can be selected using the
clock control bits in the SPI Configuration Register (SPI0CFG). The CKPHA bit (SPI0CFG.7) selects one
of two clock phases (edge used to latch the data). The CKPOL bit (SPI0CFG.6) selects between an active-
high or active-low clock. Both master and slave devices must be configured to use the same clock phase
and polarity. Note: the SPI should be disabled (by clearing the SPIEN bit, SPI0CN.0) while changing the
clock phase and polarity.
The SPI Clock Rate Register (SPI0CKR) as shown in SFR Definition 15.3 controls the master mode serial
clock frequency. This register is ignored when operating in slave mode.
Figure 15.4. Full Duplex Operation
15.3. SPI Special Function Registers
The SPI is accessed and controlled through four special function registers in the system controller:
SPI0CN Control Register, SPI0DAT Data Register, SPI0CFG Configuration Register, and SPI0CKR Clock
Rate Register. The four special function registers related to the operation of the SPI Bus are described in
the following section.
SCK
(CK POL = 0,CK PHA = 0)
SCK
(CK POL =1, CK PHA =0)
SCK
(CK POL =1, CK PHA =1)
SCK
(CK POL = 0,CK PHA =1)
MSB
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
LSB
MISO/MOSI
NSS
相关PDF资料
PDF描述
C8051F002R IC 8051 MCU 32K FLASH 32LQFP
PIC18F442-I/P IC MCU FLASH 8KX16 EE A/D 40DIP
PIC32MX340F256H-80I/PT IC PIC MCU FLASH 256K 64-TQFP
PIC16LF874A-I/PT IC PIC MCU FLASH 4KX14 44TQFP
PIC24HJ128GP510-I/PT IC PIC MCU FLASH 128KB 100TQFP
相关代理商/技术参数
参数描述
C8051F226-TB 功能描述:插座和适配器 With C8051F226 MCU RoHS:否 制造商:Silicon Labs 产品:Adapter 用于:EM35x
C8051F23 制造商:未知厂家 制造商全称:未知厂家 功能描述:8K Flash, 256 RAM, 48-Pin MCU
C8051F230 功能描述:8位微控制器 -MCU 8KB RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
C8051F230-GQ 功能描述:8位微控制器 -MCU 8KB 48P MCU RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
C8051F230-GQR 功能描述:8位微控制器 -MCU 8KB 48Pin MCU Tape and Reel RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT