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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  
6.1.9 R9 (ADCON: ADC Control Register)  
7
6
5
4
3
2
1
0
VREFS  
CKR1  
CKR0  
ADRUN  
ADPD  
ADIS1  
ADIS0  
Bit 7 (VREFS): The input source of the Vref of the ADC  
0 = The Vref of the ADC is connected to Vdd (default value), and the  
P54/VREF pin carries out the function of P54  
1 = The Vref of the ADC is connected to P54/VREF  
NOTE  
The P54/TCC/VREF pin cannot be applied to TCC and VREF at the same time.  
If P53/TCC/VREF acts as VREF analog input pin, then CONT Bit 5 “TS” must be  
“0.”  
The P54/TCC/VREF pin priority is as follows:  
P53/TCC/VREF Pin Priority  
High  
Medium  
TCC  
Low  
P54  
VREF  
Bit 6 & Bit 5 (CKR1 & CKR0): The prescaler of oscillator clock rate of ADC  
00 = 1: 4 (default value)  
01 = 1: 16  
10 = 1: 64  
11 = 1: WDT ring oscillator frequency  
CKR0:CKR1  
Operation Mode  
Fsco/4  
Max. Operation Frequency  
00  
01  
10  
11  
1 MHz  
4 MHz  
16MHz  
1 MHz  
Fsco/16  
Fsco/64  
Internal RC  
Bit 4 (ADRUN): ADC starts to RUN.  
1 = an AD conversion is started. This bit can be set by software  
0 = Reset upon completion of the conversion. This bit cannot be  
reset through software  
Bit 3 (ADPD): ADC Power-down mode  
1 = ADC is operating  
0 = Switch off the resistor reference to save power even while the  
CPU is operating  
Bit 2:  
Not used  
Product Specification (V1.0) 06.16.2005  
11  
(This specification is subject to change without further notice)  
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