EM78P259N/260N
8-Bit Microprocessor with OTP ROM
Bit 1 ~ Bit 0 (ADIS1 ~ADIS0): Analog Input Select
00 = ADIN0/P50
01 = ADIN1/P51
10 = ADIN2/P52
11 = ADIN3/P53
These bits can only be changed when the ADIF bit (see Section
6.1.14, RE (Interrupt Status 2 & Wake-Up Control Register)) and the
ADRUN bit are both LOW.
6.1.10 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]
EM78P259N/260N ICE259N
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
Bit 2 ~ Bit 0:
Unimplemented, read as ‘0’
6.1.11 RB (ADDATA: Converted Value of ADC)
7
6
5
4
3
2
1
0
AD11
AD10
AD9
AD8
AD7
AD6
AD5
AD4
When the AD conversion is completed, the result is loaded into the ADDATA. The
ADRUN bit is cleared, and the ADIF (see Section 6.1.14, RE (Interrupt Status 2 &
Wake-Up Control Register)) is set.
RB is read only.
Product Specification (V1.0) 06.16.2005
• 13
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
