EM78P569 View Datasheet(PDF) - ELAN Microelectronics
Part Name
Description
MFG CO.
'EM78P569' PDF : 58 Pages View PDF
EM78P569
8-bit OTP Micro-controller
Bit 2(P62S) : Select normal I/O PORT62 pin or channel 3 input AD3 pin of ADC
0 P62 (I/O PORT62) pin is selected
1 AD3 (Channel 3 input of ADC) pin is selected
Bit 3(P63S) : Select normal I/O PORT63 pin or channel 4 input AD4 pin of ADC
0 P63 (I/O PORT63) pin is selected
1 AD4 (Channel 4 input of ADC) pin is selected
Bit 4(P64S) : Select normal I/O PORT64 pin or channel 5 input AD5 pin of ADC
0 P64 (I/O PORT64) pin is selected
1 AD5 (Channel 5 input of ADC) pin is selected
Bit 4(P65S) : Select normal I/O PORT65 pin or channel 6 input AD6 pin of ADC
0 P65 (I/O PORT65) pin is selected
1 AD6 (Channel 6 input of ADC) pin is selected
Bit 6(P66S) : Select normal I/O PORT66 pin or external reference voltage input of ADC
0 P66 (I/O PORT66) pin is selected and ADC reference voltage come from internal VDD
1 VREF (External reference voltage input of ADC) pin is selected
This bit can switch AD converter reference voltage coming from internal or external voltage.
If this bit set to internal, then the reference voltage will be VDD and PORT66 is a normal I/O PORT. If it
set to external reference voltage, then the voltage will connected to VREF pin.
Bit 7 : (undefined) not allowed to use
IOC7 (PORT7 I/O control, PORT7 pull high control)
PAGE0 (PORT7 I/O control register)
7
6
5
4
3
2
1
0
IOC77 IOC76 IOC75 IOC74 IOC73 IOC72 IOC71 IOC70
R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1
Bit 0 ~ Bit 7 (IOC70 ~ IOC77) : PORT7(0~7) I/O direction control register
0 put the relative I/O pin as output
1 put the relative I/O pin into high impedance
PAGE1 (PORT7 pull high control register)
7
6
5
4
3
2
1
PH77 PH76 PH75 PH74 PH73 PH72 PH71
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
Bit 0 ~ Bit 7 (PH70 ~ PH77) : PORT7 bit0~bit7 pull high control register
0 disable pull high function.
1 enable pull high function
0
PH70
R/W-0
IOC8 (PORT8 I/O control, PORT8 pull high control)
PAGE0 (PORT8 I/O control register)
7
6
5
4
3
2
1
0
IOC87 IOC86 IOC85 IOC84 IOC83 IOC82 IOC81 IOC80
R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1
Bit 0 ~ Bit 7 (IOC80 ~ IOC87) : PORT8(0~7) I/O direction control register
0 put the relative I/O pin as output
1 put the relative I/O pin into high impedance
__________________________________________________________________________________________________________________________________________________________________
* This specification is subject to be changed without notice.
31
8/19/2004 V4.4
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