EM78452 datasheet(33/54 Pages) EMC

Il numero della parte	EM78452

Spiegazioni elettronici	8-Bit Microcontroller

PDF	54 Pages

Scroll/Zoom	100%

Produttore elettronici	EMC [ELAN Microelectronics Corp]

Homepage	http://www.emc.com.tw

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33 / 54 page

EM78452

8-Bit Microcontroller

Product Specification (V1.0) 10.18.2007

• 29

(This specification is subject to change without further notice)

ORG 0X30

INIT:

CLRA

IOW 0X05

IOW 0X06

MOV 0x05,A

MOV 0X06,A

MOV A,@0XFF

IOW 0X08

MOV A,@0B11001111

CONTW

MOV A,@0B00010001

IOW 0X0E

MOV A,@0B00000010

IOW 0XF

ENI

MOV A,@0B00110111

IOW 0x09

0X3F,1

NOP

JBS 0X3F,1

JMP $-2

JMP INTERRUPT

SPI:

BS 0X0D,4

WDTC

MOV A,@0X0F

MOV 0X06,A

JBC 0X08,1

JMP SPI

MOV A,@0X5A

MOV 0X0B,A

NOP

JBC 0X0D,4

JMP $-2

BS 0XD,4

NOP

MOV A,@0XF0

; Set prescaler for WDT

; Disable wakeup function

; Enable external interrupt

; Clear RBFIF flag

; Polling loop for checking interrupt

; occurrences

; Keep SSE enabled as long as possible

; Show a signal when entering SPI loop

; Choose P81 as a signal button

; Move 5A into write buffer when P81 button

; is pushed

; Polling loop for checking SPI

; transmission completed

; Display at Port6 when P81 button is pushed

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