EM78P5840/5841/5842
8-bit Micro-controller
OSCM1,0
PLL
Output
IRC2
oscillator
ERC
oscillator
IRC1
(32K)
Fig.5 Block diagram of TCC WDT
IOC5 (Unused)
PAGE0 (Unused)
7
0
6
0
5
0
4
-
3
-
2
-
1
-
0
-
R/W
R/W
R/W
Bit0~4 : (undefined) not allowed to use
Bit5~Bit7(Unused) : These three 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.
PAGE1 (undefined) not allowed to use.(This page is not sure to 0 or 1 )
IOC6 (PORT6 I/O control, P6* pins switch control)
PAGE0 (PORT6 I/O control register)
7
0
6
0
5
4
3
2
1
0
IOC65
R/W-1
IOC64
R/W-1
IOC63
R/W-1
IOC62
R/W-1
IOC61
R/W-1
IOC60
R/W-1
-
-
Bit0~Bit1: In crystal mode, these two bits are unused registers. In IRC or ERIC mode, PORT60 and PORT61 are
I/O direction control register.
Bit 2 ~ Bit 5 (IOC62 ~ IOC65) : PORT6(2~5) 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
Bit6~Bit7 (Unused): These2 bits must clear to 0 or MCU power consumption will increase.
The default value in these 2 bits are “1”. Please clear them to “0” when init MCU.
__________________________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
18
2004/11/10 V2.6
ELAN [ ELAN MICROELECTRONICS CORP ]
