em78p809n ELAN Microelectronics Corp, em78p809n Datasheet - Page 18

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

EM78P809N
8-Bit Microcontroller
14 •
TC3DA7
TC3DB7
ADD1
TC3CK1
Bit 7
Bit 7
Bit 7
TC3DA − Timer 3 Data Buffer A ( Address: 06h )
TC3DB − Timer 3 Data Buffer B ( Address: 07h )
TC2CR/ ADDL — Timer/Counter 2 Control Register, AD Low 2 bits Data
Buffer ( Address: 08h )
Bit 5 ~ Bit 4 ( TC3CK1 ~ TC3CK0 ) : Timer/Counter3 Clock Source Select
Bit 3 ( TC3M ) : Timer/Counter 3 mode select
Bit 7 ~ Bit 0 ( TC3DA7 ~ TC3DA0 ) : Data buffer of 8-bit Timer/Counter 3.
Bit 7 ~ Bit 0 ( TC3DB7 ~ TC3DB0 ) : Data buffer of 8-bit Timer/Counter 3
Bit 7 ~ Bit 6 ( ADD1 ~ ADD0 ) : AD low 2-bit data buffer
Bit 4 ( TC2M ) : Timer/Counter 2 mode select
Bit 3 ( TC2S ) : Timer/Counter 2 start control
0
0
1
1
TC3M = “0” : Timer/Counter3 mode
TC3M = “1” : Capture mode
TC2S = “0” : Stop and counter clear
TC2S = “1” : Start
ADD0
TC2M = “0” : Timer/counter mode
TC2M = “1” : Window mode
Reset does not affect this register.
TC3DA6
TC3DB6
Reset does not affect this register.
Bit 6
Bit 6
Bit 6
TC3CK0
0
1
0
1
TC3DA5
TC3DB5
Bit 5
Bit 5
Bit 5
0
External clock (TC3 pin)
( Normal, Idle )
Clock source
TC2M
TC3DA4
TC3DB4
Bit 4
Bit 4
Bit 4
(This specification is subject to change without further notice)
Fc/
Fc/
Fc/
2
2
2
12
10
7
TC3DA3
TC3DB3
TC2S
Bit 3
Bit 3
Bit 3
Product Specification (V1.0) 07.26.2005
TC2CK2
TC3DA2
TC3DB2
Resolution
Bit 2
( Fc=8M )
Bit 2
Bit 2
512μS
128μS
16μS
-
TC2CK1
TC3DA1
TC3DB1
Bit 1
Bit 1
Bit 1
Max. time
( Fc=8M )
131.1mS
32.6mS
4.1mS
TC2CK0
TC3DA0
TC3DB0
-
Bit 0
Bit 0
Bit 0