HD404639R Datasheet, PDF (7/135 Pages) Renesas Technology Corp – 4-Bit Single-Chip Microcomputer

Block Diagram
HD404639R Series
INT ₀
INT ₁
INT ₂
INT ₃
INT ₄
EVNB
TOB
TOC
EVND
TOD
SI ₁
SO ₁
SCK₁
SI ₂
SO ₂
SCK₂
VCref
COMP₀
COMP₁
COMP₂
COMP₃
VTref
TONER
TONEC
External
interrupt
Timer
A
Timer
B
Timer
C
Timer
D
Serial
interface
1
Serial
interface
2
Compa-
rator
DTMF
System control
RAM
(1,152 × 4 bit)
W
(2 bit)
X
(4 bit)
SPX
(4 bit)
Y
(4 bit)
SPY
(4 bit)
ALU
CPU
ST CA
(1 bit) (1 bit)
A
(4 bit)
B
(4 bit)
SP
(10 bit)
Insruction
decoder
PC
(14 bit)
ROM
(16,384 × 10 bit)
(8,192 × 10 bit)
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
R0
R0
R0
R0
0
1
2
3
R1
R1
R1
R1
0
1
2
3
R2
R2
R2
R2
0
1
2
3
R3
R3
R3
R3
0
1
2
3
R4
R4
R4
R4
0
1
2
3
R5
R5
R5
R5
0
1
2
3
R6
R6
R6
R6
0
1
2
3
R7
R7
R7
R7
0
1
2
3
R8
R8
R8
R8
0
1
2
3
R9
R9
R9
R9
0
1
2
3
RRRRAAAA₀₁₂₃
RB0
RB1
RB2
RB3
RC0
RC port _RD0
RD1
RD2
RE port ^RD3
RE₀
High-current
source pins
High-current
sink pins
5