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EM78P312N
8-Bit Microcontroller
8 •
Product Specification (V1.0) 10.03.2006
(This specification is subject to change without further notice)
R6 (Port 6 I/O Data Register)
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
P67 P66 P65 P64 P63 P62 P61 P60
Bit 7 ~ Bit 0 ( P67 ~ P60 ) : 8-bit Port 6 I/O data register
User can use IOC6 register to define each bit whether input or output.
R7 (Port 7 I/O Data Register)
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
0 0 0 0 P73 P72 P71 P70
Bit 3 ~ Bit 0 ( P73 ~ P70 ) : Port 73 ~ Port 70 I/O data register
User can use IOC7 register to define each bit whether input or output.
R8 (Port8 I/O Data Register)
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
0 0 0 0 0 0 P81 P80
Bit 1 ~ Bit 0 ( P81 ~ P80 ) : Port 81 ~ Port 80 I/O data register
User can use IOC8 register to define each bit whether input or output.
R9 (Port9 I/O Data Register)
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
P97 P96 P95 P94 P93 P92 P91 P90
Bit 7 ~ Bit 0 ( P97 ~ P90 ) : 8-bit Port 97 ~ Port 90 I/O data register
User can use IOC9 register to define each bit whether input or output.
RB (Timer/Counter 4 Control Register)
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
TC4FF1 TC4FF0 TC4S TC4CK2 TC4CK1 TC4CK0 TC4M1 TC4M0
Bit 7 ~ Bit 6 ( TC4FF1 ~ TC4FF0 ) : Timer/Counter 4 flip-flop control
TC4FF1 TC4FF0 Operating Mode
0 0 Clear
0 1 Toggle
1 0 Set
1 1 Reserved
Bit 5 ( TC4S ) : Timer/Counter 4 start control
TC4S = “0” : Stop and clear counter
TC4S = “1” : Start