UPD70208HGF-12-3B9 NEC [NEC], UPD70208HGF-12-3B9 Datasheet - Page 27
![no-image](/images/no-image-200.jpg)
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
(110 pages)
- Current page: 27 of 110
- Download datasheet (618Kb)
7. WCU (WAIT CONTROL UNIT)
bus cycle.
7.1
•
•
•
•
•
•
•
The WCU has the function of automatically inserting a wait state (TW) of 0 to 3 clock cycles in a CPU, DMAU or REFU
Automatic setting of 0 to 3 waits for a CPU memory bus cycle
1M-byte memory space can be divided into 5
64K-byte I/O space can be divided into 3
Automatic setting of 0 to 3 waits for an external I/O cycle
Automatic setting of 0 to 3 waits for a DMA cycle
Automatic setting of 0 to 3 waits for a refresh cycle
Same as V40 and V50 directly after a reset (memory space divided into 3, no division of I/O space)
Remark The division specification and the size of each block are set by means of a system I/O area register.
FEATURES
1 M-Byte
Memory Area
FFFFFH
00000H
Figure 7-1. Example of Memory Space Division
Upper Memory Block
Middle Memory Block
Lower Memory Block
Data Sheet U13225EJ4V0DS00
Upper Sub
Memory Block
Lower Sub
Memory Block
PD70208H, 70216H
27
Related parts for UPD70208HGF-12-3B9
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![UPD70208HGF-10-3B9](/images/manufacturer_photos/0/4/470/nec_tmb.jpg)
Part Number:
Description:
16-bit microprocessor incorporating peripheral I/O
Manufacturer:
NEC
Datasheet:
![UPD70208HGF-16-3B9](/images/manufacturer_photos/0/4/470/nec_tmb.jpg)
Part Number:
Description:
V40HLTM/ V50HLTM 16/8/ 16-BIT MICROPROCESSOR
Manufacturer:
NEC
Datasheet:
![R120D-1E](/images/no-image3.png)
Part Number:
Description:
The high-density rack server NEC Express5800/R120d-1E
Manufacturer:
NEC [NEC]
Datasheet:
![R120D-1M](/images/no-image3.png)
Part Number:
Description:
The high-density rack server NEC Express5800/R120d-1M
Manufacturer:
NEC [NEC]
Datasheet:
![R120D-2E](/images/no-image3.png)
Part Number:
Description:
The flexible compact rack server NEC Express5800/R120d-2E
Manufacturer:
NEC [NEC]
Datasheet:
![R120D-2ES](/images/no-image3.png)
Part Number:
Description:
The high-capacity rack server NEC Express5800/R120d-2E(Storage-Rich)
Manufacturer:
NEC [NEC]
Datasheet:
![R120D-2M](/images/no-image3.png)
Part Number:
Description:
The scalable compact rack server NEC Express5800/R120d-2M
Manufacturer:
NEC [NEC]
Datasheet:
![B120D](/images/no-image3.png)
Part Number:
Description:
The flexible blade server NEC Express5800/B120d
Manufacturer:
NEC [NEC]
Datasheet:
![UPD70325L-8](/images/manufacturer_photos/0/4/470/nec_tmb.jpg)
Part Number:
Description:
16/8 bit single-chip microcomputer
Manufacturer:
NEC
Datasheet:
![UPC1316C](/images/manufacturer_photos/0/4/470/nec_tmb.jpg)
Part Number:
Description:
Dual audio power amp circuit
Manufacturer:
NEC
Datasheet: