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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  
Bit 1 (ADE1 ): AD converter enable bit of P51 pin  
0 = Disable ADC1, P51 acts as I/O pin  
1 = Enable ADC1 acts as analog input pin  
Bit 0 (ADE0 ): AD converter enable bit of P50 pin  
0 = Disable ADC0, P50 acts as I/O pin  
1 = Enable ADC0 acts as analog input pin  
6.7.1.2 R9 (ADCON: AD Control Register)  
7
6
5
4
3
2
1
0
VREFS  
CKR1  
CKR0  
ADRUN  
ADPD  
-
ADIS1  
ADIS0  
ADCON register controls the operation of the AD conversion and decides which pin  
should be currently active.  
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 P54 function  
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  
P54/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:  
P54/TCC/VREF Pin Priority  
High  
Medium  
TCC  
Low  
P54  
VREF  
Bit 6 ~ Bit 5 (CKR1 ~ CKR0):The ADC prescaler oscillator clock rate  
00 = 1: 4 (default value)  
01 = 1: 16  
10 = 1: 64  
11 = 1: WDT ring oscillator frequency  
CKR0:CKR1 Operation Mode Max. Operation Frequency  
00  
01  
10  
11  
Fsco/4  
1 MHz  
4 MHz  
16MHz  
1 MHz  
Fsco/16  
Fsco/64  
Internal RC  
Product Specification (V1.0) 06.16.2005  
43  
(This specification is subject to change without further notice)  
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