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IOCA [6, 7] Select the operation frequency in Dual Clock Mode. Four frequencies are
8.2.3.5
Bit 7
−
IOCB [0~6] These bits are used to select which of the Port 9 pins is to be assigned to
IOCB[7]
8.2.3.6
Bit 7
−
IOCC [0~3, 5, 6] LED sink control bit. These bits are used to enable the LED sink
IOCC [4, 7] Reserved bits
8.2.3.7
Bit 7
−
IOCD [0~3, 5, 6] These bits control the 25KΩ pull-high resistor of individual pins in
IOCD [4, 7] Reserved bits
Product Specification (V1.11) 04.20.2007
(This specification is subject to change without further notice)
available and can be chosen as Dual Clock Mode in running the MCU
program.
Dual_Frq.1
0
0
1
1
IOCB (Port 9 Wake-up Pin Select Register)
Default Value: (0B_X111_1111)
Bit 6
Bit 5
/P96
/P95
wake up the MCU while in Power down mode.
0 : Enable the function
1 : Disable the function
Reserved bit
IOCC (Port 9 LED Sink Capacity Control Register)
Default Value: (0B_X00X_0000)
Bit 6
Bit 5
P96
P95
capacity of P90 ~ P97
0 : Disable the LED sink capacity of respective pin
1 : Enable the LED sink capacity of respective pin
IOCD (Port 9 Pull High Control Register) Default Value: (0B_X11X_1111)
Bit 6
Bit 5
/PH96
/PH95
Port 9.
0 : Enable the pull-high function
1 : Disable the pull-high function
Universal Serial Bus Series Microcontroller
Dual_Frq.0
0
1
0
1
Bit 4
Bit 3
Bit 2
/P94
/P93
Bit 4
Bit 3
Bit 2
−
P93
Bit 4
Bit 3
Bit 2
−
/PH93
/PH92
EM78M611E
Frequency
500Hz
4kHz
32kHz
256kHz
Bit 1
Bit 0
/P92
/P91
/P90
Bit 1
Bit 0
P92
P91
Bit 1
Bit 0
/PH91
/PH90
P90
• • • • 19
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