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