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HD404449 Datasheet(PDF) 7 Page - Renesas Technology Corp

Part # HD404449
Description  microcomputer has four timers, two serial interfaces, A/D converter,
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD404449 Datasheet(HTML) 7 Page - Renesas Technology Corp

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HD404449 Series
5
Block Diagram
System control
External
interrupt
Timer
A
Timer
B
Timer
C
Timer
D
Serial
interface
1
Serial
interface
2
A/D
converter
RAM
(1,152
4 bits)
W
(2 bits)
X
(4 bits)
Y
(4 bits)
SPX
(4 bits)
ST
(1 bit)
CA
(1 bit)
A
(4 bits)
B
(4 bits)
SP
(10 bits)
PC
(14 bits)
Instruction
decoder
CPU
R0
R0
R0
R0
R1
R1
R1
R1
R2
R2
R2
R2
R3
R3
R3
R3
R4
R4
R4
R4
R5
R5
R5
R5
R6
R6
R6
R6
R7
R7
R7
R7
R8
R8
R8
R8
R9
R9
R9
R9
RA
RA
RA
RA
RB
RB
RB
RB
RC
RC
RC
RC
: Data bus
: Signal line
TOC
EVND
TOD
INT
INT
INT
INT
SI2
SO2
SCK2
AVCC
AVSS
AN0
AN1
AN2
AN3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
SI
SO
SCK
ROM
(16,384
× 10 bits)
(8,192
× 10 bits)
High current
pins
D
D
D
D
D
D
D
D
D
D
D
D
D
D
0
1
2
3
4
5
6
7
8
9
10
11
12
13
0
1
2
3
EVNB
TOB
1
1
1
SPY
(4 bits)
ALU
×


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