参数资料
型号: MC68HC05C12ACB
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP42
封装: SHRINK, PLASTIC, DIP-42
文件页数: 139/156页
文件大小: 756K
代理商: MC68HC05C12ACB
Serial Peripiheral Interface (SPI)
SPI Signal Description
MC68HC05C12A Rev. 3.0
General Release Specification
MOTOROLA
Serial Peripiheral Interface (SPI)
83
NON-DISCLOSURE
AGREEMENT
REQUIRED
10.4.3 Serial Clock (SCK)
The master clock is used to synchronize data movement both in and out
of the device through its MOSI and MISO lines. The master and slave
devices are capable of exchanging a byte of information during a
sequence of eight clock cycles. Since SCK is generated by the master
device, this line becomes an input on a slave device.
As shown in Figure 10-1, four possible timing relationships may be
chosen by using control bits CPOL and CPHA in the serial peripheral
control register (SPCR). Both master and slave devices must operate
with the same timing. The master device always places data on the
MOSI line one-half cycle before the clock edge (SCK), so the slave
device can latch the data.
Two bits (SPR0 and SPR1) in the SPCR of the master device select the
clock rate. In a slave device, SPR0 and SPR1 have no effect on the SPI
operation.
Figure 10-1. Data Clock Timing Diagram
INTERNAL STROBE FOR DATA CAPTURE (ALL MODES)
MSB
6543210
SS
SCK
MISO/MOSI
相关PDF资料
PDF描述
MC68302RC25C LOCAL AREA NETWORK CONTROLLER, CPGA132
MCM16Z2BMFC20B1 16-BIT, MICROCONTROLLER, PQFP132
MCK16Z1CPV20B1 16-BIT, MICROCONTROLLER, PQFP144
MC68B52S 1 CHANNEL(S), SERIAL COMM CONTROLLER, CDIP24
MC68A54P 1 CHANNEL(S), SERIAL COMM CONTROLLER, PDIP28
相关代理商/技术参数
参数描述
MC68HC05C12B 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNITS
MC68HC05C12CP 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNITS
MC68HC05C12P 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNITS
MC68HC05C4 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:8-Bit Microcomputers
MC68HC05C8 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:PROGRAMMING REFRERENCE GUIDE