EM78P417N/418N/419N
8-Bit Microprocessor with OTP ROM
Bit 4 (ADRUN): ADC starts to RUN.
0 = Reset upon completion of the conversion. This bit cannot be
reset through software
1 = an AD conversion is started. This bit can be set by software
Bit 3 (ADPD): 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 = ADIN0/P60
001 = ADIN1/P61
010 = ADIN2/P62
011 = ADIN3/P63
100 = ADIN4/P64
101 = ADIN5/P65
110 = ADIN6/P66
111 = ADIN7/P67
These bits can only be changed when the ADIF bit (see Section
6.1.14) and the ADRUN bit are both LOW.
6.1.9 RA (ADOC: ADC Offset Calibration Register)
7
6
5
4
3
2
1
0
CALI
SIGN
VOF[2]
VOF[1]
VOF[0]
“0”
“0”
“0”
Bit 7 (CALI):
Calibration enable bit for ADC offset
0 = Calibration disable
1 = Calibration enable
Bit 6 (SIGN):
Polarity bit of offset voltage
0 = Negative voltage
1 = Positive voltage
Bit 5 ~ Bit 3 (VOF[2] ~ VOF[0]): Offset voltage bits
VOF[2]
VOF[1]
VOF[0]
EM78P417/8/9N ICE418N
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0LSB
2LSB
4LSB
6LSB
8LSB
10LSB
12LSB
14LSB
0LSB
1LSB
2LSB
3LSB
4LSB
5LSB
6LSB
7LSB
14 •
Product Specification (V1.0) 06.23.2005
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
