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EM78P468N/EM78P468L
8-Bit Microcontroller
6.2.3
IOC60/P6CR (Port 6 I/O Control Register)
(Address: 06h, Bit 0 of R5 = "0")
Bit 7
IOC67
Bit 7 (IOC67) ~ Bit 0(IOC60): Port 6 I/O direction control register
IOC6x ="0": set the relative Port 6.x I/O pins as output
IOC6x ="1": set the relative Port 6.x I/O pin into high impedance (input pin)
6.2.4
IOC70/P7CR (Port 7 I/O Control Register)
(Address: 07h, Bit 0 of R5 = "0")
Bit 7
IOC77
Bit 7 (IOC77) ~ Bit 0 (IOC70): Port 7 I/O direction control register
IOC7x = "0": set the relative Port 7.x I/O pins as output
IOC7x = "1": set the relative Port 7.x I/O pin into high impedance (input pin)
6.2.5
IOC80/P8CR (Port 8 I/O Control Register)
(Address: 08h, Bit 0 of R5 = "0")
Bit 7
IOC87
Bit 7 (IOC 87) ~ Bit 0 (IOC 80): Port 8 I/O direction control register
IOC8x = "0": set the relative Port 8.x I/O pins as output
IOC8x = "1": set the relative Port 8.x I/O pin into high impedance (input pin)
6.2.6
IOC90/RAM_ADDR (128 Bytes RAM Address)
(Address: 09h, Bit 0 of R5 = "0")
Bit 7
0
Bit 7: Not used, fixed at "0"
Bits 6~0: 128 bytes RAM address
6.2.7
IOCA0/RAM_DB (128 Bytes RAM Data Buffer)
(Address: 0Ah, Bit 0 of R5 = "0")
Bit 7
RAM_D7
Bits 7~0: 128 bytes RAM data transfer register
16 •
Bit 6
Bit 5
IOC66
IOC65
IOC64
Bit 6
Bit 5
IOC76
IOC75
IOC74
Bit 6
Bit 5
IOC86
IOC85
IOC84
Bit 6
Bit 5
RAM_A6
RAM_A5
RAM_A4
Bit 6
Bit 5
RAM_D6
RAM_D5
RAM_D4
Bit 4
Bit 3
Bit 2
IOC63
IOC62
Bit 4
Bit 3
Bit 2
IOC73
IOC72
Bit 4
Bit 3
Bit 2
IOC83
IOC82
Bit 4
Bit 3
Bit 2
RAM_A3
RAM_A2
Bit 4
Bit 3
Bit 2
RAM_D3
RAM_D2
Product Specification (V1.5) 02.15.2007
(This specification is subject to change without further notice)
Bit 1
Bit 0
IOC61
IOC60
Bit 1
Bit 0
IOC71
IOC70
Bit 1
Bit 0
IOC81
IOC80
Bit 1
Bit 0
RAM_A1
RAM_A0
Bit 1
Bit 0
RAM_D1
RAM_D0
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