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4553 Datasheet(PDF) 70 Page - Renesas Technology Corp

Part # 4553
Description  SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
PDF  145 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

4553 Datasheet(HTML) 70 Page - Renesas Technology Corp

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Rev.3.02
Dec 22, 2006
page 70 of 142
REJ03B0024-0302
4553 Group
Stop (state retained)
Operating
Bit 4 (T34) of timer 3
System clock (STCK)
CNTR output auto-control circuit not selected
CNTR output auto-control circuit selected
Falling edge
Rising edge
Timer LC control bit
Timer LC count source selection bit
CNTR output auto-control circuit
selection bit
CNTR pin input count edge selection bit
0
1
0
1
0
1
0
1
Timer control register W4
at power down : state retained
at reset : 00002
W43
W42
W41
W40
R/W
TAW4/TW4A
Internal dividing resistor for LCD power
supply selection bit (Note 2)
LCD control bit
LCD control register L1
L13
L12
L11
L10
at reset : 00002
at power down : state retained
0
1
0
1
L11
0
0
1
1
L10
0
1
0
1
Duty
1/2
1/3
1/4
Bias
1/2
1/3
1/3
LCD control register L2
at reset : 00002
at power down : state retained
W
TL2A
0
1
0
1
0
1
0
1
SEG0
VLC3
SEG1
VLC2
SEG2
VLC1
Internal dividing resistor valid
Internal dividing resistor invalid
L23
L22
L21
L20
SEG0/VLC3 pin function switch bit (Note 3)
SEG1/VLC2 pin function switch bit (Note 4)
SEG2/VLC1 pin function switch bit (Note 4)
Internal dividing resistor for LCD power
supply control bit
2r ✕ 3, 2r ✕ 2
r ✕ 3, r ✕ 2
Stop
Operating
Not available
LCD control register L3
at reset : 11112
at power down : state retained
W
TL3A
0
1
0
1
0
1
0
1
SEG20
P23
SEG19
P22
SEG18
P21
SEG17
P20
L33
L32
L31
L30
P23/SEG20 pin function switch bit
P22/SEG19 pin function switch bit
P21/SEG18 pin function switch bit
P20/SEG17 pin function switch bit
Notes 1: “R” represents read enabled, and “W” represents write enabled.
2: “r (resistor) multiplied by 3” is used at 1/3 bias, and “r multiplied by 2” is used at 1/2 bias.
3: VLC3 is connected to VDD internally when SEG0 pin is selected.
4: Use internal dividing resistor when SEG1 and SEG2 pins are selected.
R/W
TAL1/TL1A
LCD duty and bias selection bits



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