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68HC705JJ7_1 参数 Datasheet PDF下载

68HC705JJ7_1图片预览
型号: 68HC705JJ7_1
PDF下载: 下载PDF文件 查看货源
内容描述: 常规版本规格 [General Release Specification]
分类和应用:
文件页数/大小: 230 页 / 5548 K
品牌: FREESCALE [ Freescale ]
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Freescale Semiconductor, Inc.  
Pa ra lle l Inp ut/ Outp ut  
7.4.7 PB5/ SDO Log ic  
The PB5/SDO pin can be used as a simple I/O port pin or be controlled  
by the SIOP serial interface as shown in Figure 7-10. The operations of  
the PB5 pin are summarized in Table 7-3.  
SERIAL DATA OUT (SDO)  
V
DD  
SERIAL ENABLE (SPE)  
READ $0005  
WRITE $0005  
DATA DIRECTION  
REGISTER B  
BIT DDRB5  
R
PORT B DATA  
REGISTER  
BIT PB5  
PB5  
SDO  
WRITE $0001  
READ $0001  
WRITE $0011  
PULLDOWN  
REGISTER B  
BIT PDIB5  
PULLDOWN  
DEVICE  
R
RESET  
MASK OPTION REGISTER ($1FF1)  
Figure 7-10. PB5/SDO Pin I/O Circuit  
General Release Specification  
MC68HC705JJ7/MC68HC705JP7 Rev. 3.0  
Parallel Input/Output  
For More Information On This Product,  
Go to: www.freescale.com  
 
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