參數(shù)資料
型號: EM78P451SP
廠商: ELAN Microelctronics Corp .
英文描述: 8-Bit Microcontroller with OTP ROM
中文描述: 8位微控制器的OTP ROM的
文件頁數(shù): 31/54頁
文件大?。?/td> 421K
代理商: EM78P451SP
EM78P451S
8-Bit Microcontroller with OTP ROM
Product Specification (V1.0) 06.01.2004
(This specification is subject to change without further notice)
27
For Slaver
ORG 0X0
INITI:
JMP INIT
ORG 0X2
INTERRUPT:
;Interrupt address
MOV A,@0X55
MOV 0X06,A
;Show a signal at Port 6 when entering interrupt
MOV A,@0B11100110
;Enable SPI, /SS disabled
MOV 0X0D,A
BS 0X0D,4
;Keep SSE at 1 to wait for SCK signal in order to shift data
MOV A,@0X00
as 00
;Move 00 to write buffer in order to keep master’s read buffer
MOV 0X0B,A
BS 0X0D,4
;Keep SSE at 1 to wait for SCK signal in order to shift data
NOP
JBC 0X0D,4
;Polling loop for checking SPI transmission completed
JMP $-2
BS 0X0D,4
;Keep SSE at 1 to wait for SCK signal in order to shift data
BC 0X03,2
MOV A,0X0A
MOV 0X06,A
;Read master’s data from read buffer
XOR A,@0XAA
;Check pass signal from read buffer
JBS 0X03,2
JMP $-6
JMP SPI
ORG 0X30
INIT:
CLRA
IOW 0X05
IOW 0X06
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