UPD70208HGF-12-3B9 NEC [NEC], UPD70208HGF-12-3B9 Datasheet - Page 21
UPD70208HGF-12-3B9
Manufacturer Part Number
UPD70208HGF-12-3B9
Description
V40HLTM, V50HLTM 16/8, 16-BIT MICROPROCESSOR
Manufacturer
NEC [NEC]
Datasheet
1.UPD70208HGF-12-3B9.pdf
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2.2 I/O SPACE
area.
In the V40HL and V50HL, I/Os up to 64K bytes (32K words) can be accessed in an area independent of the memory.
The various on-chip peripheral LSIs are set by accessing the system I/O area.
Extended functions added to those of the V40 and V50 are mapped onto unused V40 and V50 registers and the reserved
The I/O map is shown in Figure 2-3.
256 Bytes
FFFFH
FFE0H
FFDFH
FF00H
FEFFH
0000H
System I/O Area
Reserved Area
DMAU
TCU
SCU
ICU
Data Sheet U13225EJ4V0DS00
Figure 2-3. I/O Map
Area used for setting of I/O boundary,
WCU, REFU, baud rate generator, etc.,
and DMAU, ICU, TCU and SCU allocation.
The DMAU, ICU, TCU and SCU
are allocated within any 256 bytes.
PD70208H, 70216H
Internal I/O Area
External I/O Area
21
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