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EM78P809NP Datasheet(PDF) 21 Page - ELAN Microelectronics Corp

Part # EM78P809NP
Description  8-BIT Microcontroller
PDF  75 Pages
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Manufacturer  EMC [ELAN Microelectronics Corp]
Direct Link  http://www.emc.com.tw
Logo EMC - ELAN Microelectronics Corp

EM78P809NP Datasheet(HTML) 21 Page - ELAN Microelectronics Corp

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EM78P809N
8-Bit Microcontroller
Product Specification (V1.0) 07.26.2005
• 17
(This specification is subject to change without further notice)
•
TBKTC
− TBT/Keytone Control ( Address: 0Eh )
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
TEN
TCK1
TCK0
0
TBTEN
TBTCK2
TBTCK1
TBTCK0
Bit 7 ( TEN ) :
Keytone enable control
TEN = “0” :
Disable
TEN = “1” :
Enable
Bit 6 ~ Bit 5 ( TCK1 ~ TCK0 )
: Keytone Output Clock Source Select
TCK1
TCK0
Clock Source
( Normal, Idle )
Keytone Output Frequency
( Fc = 8MHz )
0
0
Fc/2
13
0.976kHz
0
1
Fc/2
12
1.953kHz
1
0
Fc/2
11
3.906kHz
1
1
Fc/2
10
7.812kHz
Bit 3 ( TBTEN )
: Time Base Timer Enable Control
TBTEN = “0” :
Disable
TBTEN = “1” :
Enable
Bit 2 ~ Bit 0 ( TBTCK2 ~ TBTCK0 ) :
Time Base Timer Clock Source Select
TBTCK2
TBTCK1
TBTCK0
Clock Source
( Normal, Idle )
Interrupt Frequency
( Fc = 8MHz )
0
0
0
Fc/2
23
0.95Hz
0
0
1
Fc/2
21
3.81Hz
0
1
0
Fc/2
16
122.07Hz
0
1
1
Fc/2
14
488.28Hz
1
0
0
Fc/2
13
976.56Hz
1
0
1
Fc/2
12
1953.12Hz
1
1
0
Fc/2
11
3906.25Hz
1
1
1
Fc/2
9
15625Hz
•
Register Bank 2 ( R3 bits (7, 6) = (1, 0) )
•
URC1
− UART Control Register 1 ( Address: 05h )
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
URTD8
UMODE1 UMODE0
BRATE2
BRATE1
BRATE0
UTBE
TXE
Bit 7 ( URTD8 ) :
Transmission data bit 8



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