HD404449 Datasheet, PDF (5/123 Pages) Hitachi Semiconductor – HD404449 SERIES

Block Diagram
HD404449 Series
INT ₀
INT ₁
INT ₂
INT ₃
EVNB
TOB
TOC
EVND
TOD
SI ₁
SO ₁
SCK ₁
SI2
SO2
SCK2
AVCC
AVSS
AN0
AN1
AN2
AN3
External
interrupt
Timer
A
Timer
B
Timer
C
Timer
D
Serial
interface
1
Serial
interface
2
A/D
converter
System control
RAM
(1,152 × 4 bits)
W
(2 bits)
X
(4 bits)
SPX
(4 bits)
Y
(4 bits)
SPY
(4 bits)
ALU
CPU
ST CA
(1 bit) (1 bit)
A
(4 bits)
B
(4 bits)
SP
(10 bits)
Instruction
decoder
PC
(14 bits)
ROM
(16,384 × 10 bits)
(8,192 × 10 bits)
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
RC1
RC2
RC3
High current
pins
: Data bus
: Signal line
5