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UPD75218 Datasheet(PDF) 13 Page - NEC

Part # UPD75218
Description  4-BIT SINGLE-CHIP MICROCOMPUTER
PDF  62 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD75218 Datasheet(HTML) 13 Page - NEC

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µPD75218
Internal reset start address
Branch address speci-
fied in BRCB !caddr
instruction
MBE RBE
Internal reset start address
INTBT/INT4 start address
MBE RBE
INTBT/INT4 start address
MBE RBE INT0 start address
INT0 start address
MBE RBE INT1 start address
INT1 start address
MBE RBE INTSO start address
INTSO start address
MBE RBE INTT0 start address
INTT0 start address
MBE RBE INTTPG start address
INTTPG start address
MBE RBE INTKS start address
INTKS start address
GETI instruction reference table
0000H
0002H
0004H
0006H
0008H
000AH
000CH
000EH
0020H
007FH
0080H
07FFH
0800H
0FFFH
1000H
1FFFH
2000H
2FFFH
3000H
3FFFH
4000H
4FFFH
5000H
5FFFH
6000H
6FFFH
7000H
7F7FH
Branch address
specified in CALL !addr
instruction
Branch/call
address specified
in GETI instruction
Entry address
specified in
CALLF !faddr
instruction
Branch address
specified in
BRCB !caddr
instruction
Branch address
specified in BRA !addr
instruction
Branch address
specified in CALLA !addr
instruction
Relative branch address
specified in BR $addr
instruction (–15 to –1,
+2 to +16)
Branch address
specified in BR !addr
instruction
(low-order 8 bits)
(high-order 6 bits)
(high-order 6 bits)
(low-order 8 bits)
(high-order 6 bits)
(low-order 8 bits)
(high-order 6 bits)
(low-order 8 bits)
(high-order 6 bits)
(low-order 8 bits)
(high-order 6 bits)
(low-order 8 bits)
(high-order 6 bits)
(low-order 8 bits)
(high-order 6 bits)
(low-order 8 bits)
Branch address speci-
fied in BRCB !caddr
instruction
Branch address speci-
fied in BRCB !caddr
instruction
Branch address speci-
fied in BRCB !caddr
instruction
Branch address speci-
fied in BRCB !caddr
instruction
Branch address speci-
fied in BRCB !caddr
instruction
Branch address speci-
fied in BRCB !caddr
instruction
Fig. 4-1 Program Memory Map
Caution The start address of an interrupt vector shown above consists of 14 bits. So the start address must be
set within a 16K-byte space (0000H to 3FFFH).
Remark In all cases other than those listed above, branch to the address with only the lower 8 bits of the PC changed
is enabled by BR PCDE and BR PCXA instructions.



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