UPD75518 NEC, UPD75518 Datasheet - Page 26

• Manufacturer Part Number: UPD75518
• Description: 4 BIT SINGLE-CHIP MICROCOMPUTER
• Manufacturer: NEC

26
FF6H
FF7H
Address
FFAH
FFBH
FFCH
FFDH
FF0H
FF1H
FF2H
FF3H
FF4H
FF5H
FF8H
FF9H
FFEH
FFFH
Note KR0 to KR7 are read-only. In 4-bit parallel input processing, PORT6 or PORT7 is specified.
Note
Note
KR3
KR7
b3
Port 0
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7
Port 8
Port 9
Port 10
Port 11
Port 12
Port 13
Port 14
Port 15
Hardware name (symbol)
KR2
KR6
b2
KR1
KR5
Fig. 2-5
b1
(PORT0)
(PORT1)
(PORT2)
(PORT3)
(PORT4)
(PORT5)
(PORT6)
(PORT7)
(PORT8)
(PORT9)
(PORT10)
(PORT11)
(PORT12)
(PORT13)
(PORT14)
(PORT15)
PD75518(A) I/O Map (4/4)
KR0
KR4
b0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R
R
R
1 bit
Number of bits that
can be manipulated
4 bits
8 bits
–
–
–
–
–
–
Bit
manipulation
addressing
pmem.@L
fmem.bit
PD75518(A)
Remarks