upd75112 Renesas Electronics Corporation., upd75112 Datasheet - Page 12

• Manufacturer Part Number: upd75112
• Description: 4-bit Single Chip-microcomputer
• Manufacturer: Renesas Electronics Corporation.

12
4. Memory Configuration
Figure 4-1 Program Memory Map ( PD75112)
Remarks: In all other cases, the program can be
PD75112, 75116
0006H
1FFFH
2000H
0004H
0008H
000AH
0020H
07FFH
0800H
0FFFH
1000H
2F7FH
0002H
007FH
0080H
Program Memory (ROM)
12160
16256
0000H
Address
0000H to 0001H: Vector table for writing the
program start address by reset
0002H to 000BH: Vector table for writing the
program start address by interrupt
branched by the BR PCDE and BR PCXA
MBE RBE
MBE RBE
MBE RBE
MBE
MBE RBE
MBE RBE
8 bits (0000H to 2F7FH):
8 bits (0000H to 3F7FH):
7
RBE
6
GETI Instruction Reference Table
INTBT/INT4 Start Address
INTBT/INT4 Start Address
INT0/INT1 Start Address
INT0/INT1 Start Address
INTSIO Start Address
INTSIO Start Address
INTT0 Start Address
INTT0 Start Address
INTT1 Start Address
INTT1 Start Address
Internal Reset Start Address
Internal Reset Start Address (Low-Order 8 Bits)
PD75116
(High-Order 6 Bits)
(High-Order 6 Bits)
(High-Order 6 Bits)
(High-Order 6 Bits)
(High-Order 6 Bits)
(High-Order 6 Bits)
(Low-Order 8 Bits)
(Low-Order 8 Bits)
(Low-Order 8 Bits)
(Low-Order 8 Bits)
(Low-Order 8 Bits)
PD75112
0
CALLF
! faddr
Instruction
Entry
Address
BRCB !caddr Instruction
Branch Address
BRCB !caddr Instruction
Branch Address
Data Memory
0020H to 007FH: Table area to be referred to
by the GETI instruction
Data area
512
Peripheral hardware area
128
instructions to an address with only the
lower 8 bits of PC changed.
4 bits (000H to 1FFH)
4 bits (F80H to FFFH)
BRCB
! caddr
Instruction
Branch
Address
CALL !addr
Instruction
Subroutin
Entry
Address
BR !addr
Instruction
Branch
Address
BR $addr
Instruction
Relative
Branch Address
(-15 to +16)
Branch Address
Subroutine Entry
Address by GETI
Instruction