EM78P312N
8-Bit Microcontroller
Bit 6 ( ADRUN ) : AD Conversion start
ADRUN = “0” : Reset on completion of the conversion by hardware, this bit
cannot be reset by software.
ADRUN = “1” : Conversion starts
Bit 5~ Bit 4 ( ADCK1 ~ ADCK0 ) : AD Conversion Time Select
Clock Source
( Normal, Idle )
Max. Operating
Frequency (Fc)
ADCK1
ADCK0
0
0
1
1
0
1
0
1
Fc/4
Fc/16
1MHz
4MHz
8MHz
-
Fc/32
Reserved
Bit 3 ( ADP ) : AD power control
ADP = “0” : Power on
ADP = “1” : Power down
Bit 2 ~ Bit 0 ( ADIS2 ~ ADIS0 ) : Analog Input Pin Select
ADIS2
ADIS1
ADIS0
Analog Input Pin
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
Bank 1 RC ADIC (AD Input Pin Control)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
ADE2
Bit 1
Bit 0
ADE7 ADE6
ADE5
ADE4
ADE3
ADE1
ADE0
Bit 7 ~ Bit 0 ( ADE7 ~ ADE0 ) : AD input pin enable control.
ADEx = “0” : Port 9.x functions as I/O pin
ADEx = “1” : Port 9.x functions as analog input pin
Bank 1 RD ADDH (AD High 8-bit Data Buffer)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
ADD9
ADD8
ADD7
ADD6
ADD5
ADD4
ADD3
ADD2
Bit 7 ~ Bit 0 ( ADD9 ~ ADD2 ) : AD high 8-bit data buffer
Product Specification (V1.0) 10.03.2006
(This specification is subject to change without further notice)
• 13
ELAN [ ELAN MICROELECTRONICS CORP ]
