EM78P417N/418N/419N
8-Bit Microprocessor with OTP ROM
Bit 6 ~ Bit 5 (CKR1 ~ CKR0):The prescaler 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 Max. Operation Frequency
00
01
10
11
Fsco/4
1 MHz
4 MHz
16MHz
-
Fsco/16
Fsco/64
Internal RC
Bit 4 (ADRUN):
Bit 3 (ADPD):
ADC starts to RUN.
0 = reset on completion of the conversion. This bit
cannot be reset though software.
1 = an AD conversion is started. This bit can be set by
software.
ADC Power-down mode.
0 = switch off the resistor reference to save power even
while the CPU is operating.
1 = ADC is operating
Bit 2 ~ Bit 0 (ADIS2 ~ ADIS0): Analog Input Select.
000 = AN0/P60
001 = AN1/P61
010 = AN2/P62
011 = AN3/P63
100 = AN4/P64
101 = AN5/P65
110 = AN6/P66
111 = AN7/P67
These bits can only be changed when the ADIF bit and
the ADRUN bit are both LOW.
Product Specification (V1.0) 06.23.2005
• 45
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
