EM78P312N
8-Bit Microcontroller
Bank 1 R8 TC2CR/ ADDL (Timer/Counter 2 Control Register, AD Low 2 bits
Data Buffer)
Bit 7
ADD1
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
ADD0
0
TC2M
TC2S
TC2CK2
TC2CK1
TC2CK0
Bit 7 ~ Bit 6 ( ADD1 ~ ADD0 ) : AD low 2-bit data buffer
Bit 4 ( TC2M ) : Timer/Counter 2 mode select
TC2M = “0” : Timer/counter mode
TC2M = “1” : Window mode
Bit 3 ( TC2S ) : Timer/Counter 2 start control
TC2S = “0” : Stop and counter clear
TC2S = “1” : Start
Bit 2 ~ Bit 0 ( TC2CK2 ~ TC2CK0 ) : Timer/Counter 2 Clock Source Select
Clock Source
( Normal, Idle )
Resolution
( Fc=8M )
Max. Time
( Fc=8M )
TC2CK2 TC2CK1 TC2CK0
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
Fc/223
Fc/213
Fc/28
Fc/23
1.05s
1.02ms
32μs
1μs
19.1h
1.1min
2.1s
65.5ms
7.9ms
-
Fc
125ns
-
-
-
-
-
External clock (TC2 pin)
Bank 1 R9 TC2DH (Timer 2 Data Buffer High Byte)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
TC2D10
Bit 1
Bit 0
TC2D15
TC2D14
TC2D13
TC2D12
TC2D11
TC2D9
TC2D8
Bit 7 ~ Bit 0 ( TC2D15 ~ TC2D8 ) : 16-bit Timer/Counter 2 data buffer high byte.
Bank 1 RA TC2DL (Timer 2 Data Buffer Low Byte)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
TC2D7
TC2D6
TC2D5
TC2D4
TC2D3
TC2D2
TC2D1
TC2D0
Bit 7 ~ Bit 0 ( TC2D7 ~ TC2D0 ) : 16-bit Timer/Counter 2 data buffer low byte.
Bank 1 RB ADCR (AD Control Register)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
ADREF
ADRUN
ADCK1
ADCK0
ADP
ADIS2
ADIS1
ADIS0
Bit 7 ( ADREF ) : AD reference voltage input select.
ADREF = “0” : Internal VDD, P97 is used as IO.
ADREF = “1” : External reference pin, P97 is used as reference input pin.
12 •
Product Specification (V1.0) 10.03.2006
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
