EM78P809N
8-Bit Microcontroller
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)
•
•
•
TC2DH − Timer 2 Data Buffer High Byte ( Address: 09h )
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
TC2D15
TC2D14
TC2D13
TC2D12
TC2D11
TC2D10
TC2D9
TC2D8
Bit 7 ~ Bit 0 ( TC2D15 ~ TC2D8 ) : 16-bit Timer/Counter 2 data buffer high byte.
TC2DL − Timer 2 Data Buffer Low Byte ( Address: 0Ah )
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.
ADCR − AD Control Register ( Address: 0Bh )
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.
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
Product Specification (V1.0) 07.26.2005
• 15
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
