EM785830AA
8-bit Micro-controller
PAGE1 (P6* pins switch control register)
7
-
6
5
4
3
2
1
0
0
0
P66S
R/W-0
P65S
R/W-0
P64S
R/W-0
P63S
R/W-0
P62S
R/W-0
R/W-0
R/W-0
Bit 0~Bit 1 : These 2 bits are undefined bits. Please clear them to 0.
Bit 2(P62S) : Select normal I/O PORT62 pin or channel 3 input AD3 pin of ADC
0 Î P62 (I/O PORT62) pin is selected
1 Î 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 Î P63 (I/O PORT63) pin is selected
1 Î 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 Î P64 (I/O PORT64) pin is selected
1 Î AD5 (Channel 5 input of ADC) pin is selected
Bit 5(P65S) : Select normal I/O PORT65 pin or channel 6 input AD6 pin of ADC
0 Î P65 (I/O PORT65) pin is selected
1 Î AD5 (Channel 6 input of ADC) pin is selected
Bit 6(P66S) : Select modulation transmitting output pin of AD or I/O PORT66 pin
0 Î P66 (I/O PORT66) pin is selected and ADC reference voltage come from internal VDD
1 Î VREF (External reference voltage input of ADC) pin is selected, ADC reference voltage come from
pin “ADR”.
IOC7 (PORT7 I/O control, PORT7 pull high control)
PAGE0 (PORT7 I/O control register)
7
0
6
5
4
3
2
0
1
0
0
IOC76
R/W-1
IOC75
R/W-1
IOC74
R/W-1
IOC73
R/W-1
IOC70
R/W-1
R/W-1
R/W-1
R/W-1
Bit1~Bit2; Bit7 (Unused) : These 3 bits must clear to 0 or MCU power consumption will increase.
The default value in these 3 bits are “1”. Please clear them to “0” when init MCU.
Bit 0 ; Bit3~Bit6 (IOC70; IOC73~IOC76) : PORT7 I/O direction control register
0 Î put the relative I/O pin as output
1 Î put the relative I/O pin into high impedance
PAGE1 (PORT7 pull high control register)
7
0
6
5
4
3
2
0
1
0
0
PH76
PH75
PH74
PH73
PH70
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
Bit1~Bit2; Bit7 (Unused) : These3 bits must clear to 0 or MCU power consumption will increase.
Bit0 ; Bit3~Bit6 : PORT7 pull high control register
0 Î disable pull high function.
1 Î enable pull high function
IOC8 (Unused)
PAGE0 (Unused)
7
0
6
0
5
0
4
0
3
0
2
0
1
0
0
0
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
** This page must clear to 0 or MCU power consumption will increase.
The default value in these 8 bits are “1”. Please clear them to “0” when init MCU.
__________________________________________________________________________________________________________________________________________________________________
* This specification is subject to be changed without notice.
21
12/1/2004 V1.6
ELAN [ ELAN MICROELECTRONICS CORP ]
