em78p809n ELAN Microelectronics Corp, em78p809n Datasheet - Page 19

• Manufacturer Part Number: em78p809n
• Description: 8-bit Microcontroller
• Manufacturer: ELAN Microelectronics Corp

Product Specification (V1.0) 07.26.2005
(This specification is subject to change without further notice)
TC2CK2
TC2D15
ADREF
TC2D7
Bit 7
Bit 7
Bit 7
TC2DH − Timer 2 Data Buffer High Byte ( Address: 09h )
Bit 7 ~ Bit 0 ( TC2D15 ~ TC2D8 ) : 16-bit Timer/Counter 2 data buffer high byte.
TC2DL − Timer 2 Data Buffer Low Byte ( Address: 0Ah )
ADCR − AD Control Register ( Address: 0Bh )
Bit 7 ~ Bit 0 ( TC2D7 ~ TC2D0 ) : 16-bit Timer/Counter 2 data buffer low byte.
Bit 7 ( ADREF ) : AD reference voltage input select.
Bit 6 ( ADRUN ) : AD Conversion start
0
0
0
0
1
1
1
1
Bit 2 ~ Bit 0 ( TC2CK2 ~ TC2CK0 ) : Timer/Counter 2 Clock Source Select
ADREF = “0” : Internal VDD, P97 is used as IO.
ADREF = “1” : External reference pin, P97 is used as reference input pin.
ADRUN = “1” : Conversion starts
ADRUN = “0” : Reset on completion of the conversion by hardware, this bit
TC2CK1
TC2D14
ADRUN
TC2D6
Bit 6
Bit 6
Bit 6
0
0
1
1
0
0
1
1
TC2CK0
TC2D13
ADCK1
TC2D5
Bit 5
Bit 5
Bit 5
0
1
0
1
0
1
0
1
cannot be reset by software.
External clock (TC2 pin)
TC2D12
ADCK0
TC2D4
Bit 4
Bit 4
Bit 4
( Normal, Idle )
Clock Source
Fc/
Fc/
Fc/
Fc/
Fc
-
-
TC2D11
2
2
2
2
TC2D3
23
13
Bit 3
8
3
Bit 3
ADP
Bit 3
TC2D10
TC2D2
ADIS2
Bit 2
Bit 2
Bit 2
Resolution
( Fc=8M )
1.02ms
125ns
1.05s
32μs
1μs
-
-
8-Bit Microcontroller
TC2D9
TC2D1
ADIS1
Bit 1
Bit 1
Bit 1
EM78P809N
Max. Time
( Fc=8M )
65.5ms
1.1min
7.9ms
19.1h
2.1s
TC2D8
TC2D0
ADIS0
Bit 0
Bit 0
-
-
Bit 0
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