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SN8P1603S 参数 Datasheet PDF下载

SN8P1603S图片预览
型号: SN8P1603S
PDF下载: 下载PDF文件 查看货源
内容描述: 8位微控制器 [8-Bit Micro-Controller]
分类和应用: 微控制器
文件页数/大小: 94 页 / 531 K
品牌: SONIX [ SONIX TECHNOLOGY COMPANY ]
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SN8P1600  
8-bit micro-controller  
ACCUMULATOR  
The ACC is an 8-bit data register responsible for transferring or manipulating data between ALU and data memory. If  
the result of operating is zero (Z) or there is carry (C or DC) occurrence, then these flags will be set to PFLAG register.  
ACC is not in data memory (RAM), so ACC can’t be access by “B0MOV” instruction during the instant addressing  
mode.  
Example: Read and write ACC value.  
; Read ACC data and store in BUF data memory  
MOV  
.
BUF, A  
.
; Write a immediate data into ACC  
MOV  
A, #0FH  
; Write ACC data from BUF data memory  
MOV A, BUF  
The system doesn’t store ACC and PFLAG value when interrupt executed. ACC and PFLAG data must be exchanged  
to other data memories defined by users. Thus, once interrupt occurs, these data must be stored in the data memory  
based on the user’s program as follows.  
Example: Protect ACC and working registers.  
ACCBUF  
PFLAGBUF  
EQU  
EQU  
00H  
01H  
; ACCBUF is ACC data buffer.  
; PFLAGBUF is PFLAG data buffer.  
INT_SERVICE:  
B0XCH  
B0MOV  
B0MOV  
A, ACCBUF  
A, PFLAG  
PFLAGBUF,A  
; Store ACC value  
; Store PFLAG value  
.
.
.
.
B0MOV  
B0MOV  
B0XCH  
A, PFLAGBUF  
PFLAG,A  
A, ACCBUF  
; Re-load PFLAG value  
; Re-load ACC  
RETI  
; Exit interrupt service vector  
Note: To save and re-load ACC data must be used “B0XCH” instruction, or the PFLAG value maybe  
modified by ACC.  
SONiX TECHNOLOGY CO., LTD  
Page 28  
Revision 1.94  
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