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EM78P259NSO14J 参数 Datasheet PDF下载

EM78P259NSO14J图片预览
型号: EM78P259NSO14J
PDF下载: 下载PDF文件 查看货源
内容描述: [EM78Q153SN EM78P153SP EM78P153SN EM78156EH EM78156EP EM78156EM EM78156EKM EM78Q156ELP EM78Q156ELM EM78Q156ELKM EM78P156ELP EM78P156ELM EM78P156ELKM EM78P156NP EM78P156NM EM78447SH EM78447SAP EM78447SAM EM78447SAS EM78447SBP EM78447SBWM EM78Q447SH EM78Q447SAP EM78Q447SAM EM78Q447SBP EM78Q447SBWM EM78P447SAP EM78P447SAM EM78P447SAS EM78P447SBP EM78P447SBWM EM78Q257 EM78Q257AP EM78Q257AM EM78Q257BP EM78Q257BM EM78P257AP EM78P257AM EM78P257BP EM78P257BM EM78451H EM78451P EM78451AQ EM]
分类和应用:
文件页数/大小: 81 页 / 2574 K
品牌: ELAN [ ELAN MICROELECTRONICS CORP ]
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EM78P258N  
8-Bit Microprocessor with OTP ROM  
NOTE  
In order to obtain accurate values, it is necessary to avoid any data transition  
on I/O pins during AD conversion.  
6.7.6.2 Sample Demo Programs  
A. Define a General Registers  
R_0 == 0  
PSW == 3  
; Indirect addressing register  
; Status register  
PORT5 == 5  
PORT6 == 6  
R_E== 0XE  
; Interrupt status register  
B. Define a Control Register  
IOC50 == 0X5  
IOC60 == 0X6  
C_INT== 0XF  
; Control Register of Port 5  
; Control Register of Port 6  
; Interrupt Control Register  
C. ADC Control Register  
ADDATA == 0xB  
AISR == 0x08  
ADCON == 0x9  
; The contents are the results of ADC  
; ADC input select register  
;
7
6
5
4
3
2
1
0
;VREFS CKR1 CKR0 ADRUN ADPD ADIS2 ADIS1 ADIS0  
D. Define Bits in ADCON  
ADRUN == 0x4  
ADPD == 0x3  
; ADC is executed as the bit is set  
; Power Mode of ADC  
E. Program Starts  
ORG 0  
; Initial address  
JMP INITIAL  
;
ORG 0x0C  
; Interrupt vector  
JMP CLRRE  
;
;
;(User program section)  
;
;
CLRRE:  
MOV A,RE  
AND A, @0BXX0XXXXX ; To clear the ADIF bit, “X” by application  
MOV RE,A  
BS ADCON, ADRUN  
; To start to execute the next AD conversion  
if necessary  
Product Specification (V1.0) 06.16.2005  
47  
(This specification is subject to change without further notice)  
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