R8A66174SP データシートの表示（PDF） - Renesas Electronics
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R8A66174SP Datasheet PDF : 12 Pages
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R8A66174SP
Control unit
HC373 : D type latch circuit(8 bit)
HC138 : 3 to 8 decoder
R8A66160 : LED driver(-24mA, cathode common)
(R8A66161 : LED driver(+24mA, anode common)
A12~A15
A0 A1 A2
HC138
XIN
XOUT
A8~A15
ALE
AD0~AD7
A0~A15
YY
YY
LE
HC373
D
Q
CE
A0~A12
ROM
D0~D7
CS
A0~A12
RAM
D0~D7
A0
OE
WR
Power-on
reset
circuit
RD
WR
Φ
RESET
INT
Φ
C/D D0~D7
WR
CS
RESET
R8A66174SP
INT
SDATA SCLK OE LATCH
Interrupt
control circuit
Control unit
XIN
A8~A15
XOUT
ALE
AD0~AD7
Power-on
reset
circuit
RD
WR
Φ
RESET
INT
A12~A15
A0~A15
A0 A1 A2
HC138
YY
YY
LE
HC373
D
Q
CE
A0~A12
ROM
D0~D7
A0
OE
CS
A0~A12
RAM
D0~D7
WR
Φ
C/D D0~D7
WR
CS
RESET
R8A66174SP
INT
SDATA SCLK OE LATCH
Interrupt
control circuit
LED illuminating unit
A CKS OE CKL
R8A66160
SQP
.... A
CKS OE CKL
R8A66160
7-segment display unit
CKS OE CKL
A
SQP
R8A66160
CKS OE CKL
A
SQP
R8A66160
....
....
Fig. 3 Application example 1(PPC copying machine eraser circuit)
Fig. 4 Application example 2(Panel display circuit)
REJ03F0278-0101 Rev.1.01 Oct.06.2008
Page 10 of 11
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