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VR4102 Datasheet(PDF) 430 Page - NEC

Part # VR4102
Description  64/32-bit Microprocessor
PDF  701 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

VR4102 Datasheet(HTML) 430 Page - NEC

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CHAPTER 21 KIU (KEYBOARD INTERFACE UNIT)
430
T1
T1
KSCAN[n]
KSCAN[n+1]
Hi-Z
KPORT sampling
T2
T3
T2
Hi-Z
Hi-Z
Hi-Z
KPORT sampling
21.2.5 KIUWKI (0x0B00 0196)
Bit
D15
D14
D13
D12
D11
D10
D9
D8
Name
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
WINTVL[9]
WINTVL[8]
R/W
R
RR
RRR
R/W
R/W
RTCRST
0
0
0
0
0
0
0
0
Other resets
0
0
0
0
0
0
0
0
Bit
D7
D6D5
D4D3D2
D1
D0
Name
WINTVL[7]
WINTVL[6]
WINTVL[5]
WINTVL[4]
WINTVL[3]
WINTVL[2]
WINTVL[1]
WINTVL[0]
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
RTCRST
0
0
0
0
0
0
0
0
Other resets
0
0
0
0
0
0
0
0
Bit
Name
Function
D[15..10]
Reserved
Write 0 when writing. 0 is returned after a read.
D[9..0]
WINTVL[9..0]
Key scan interval time setting (WINTVL[9..0]*30
Ps)
1111111111 : 30690
Ps
:
0000000001 : 30
Ps
0000000000 : No Wait
This register is used to set the interval time between when one set of key data is obtained by the key scan
sequencer and when the next set of key data is obtained.



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