HD404344R Datasheet, PDF (15/102 Pages) Renesas Technology Corp – 4-bit microcomputer has an A/D converter

HD404394 Series Block Diagram
HD404344R Series/HD404394 Series
INT₀
Interrupt
control
EVNB
Timer B
TOC
Timer C
SI
SO
SCK
Serial
interface
AN₁
AN₂
AN₃
V_ref
Data bus
A/D
converter
Large-current
pin
Intermediate-
voltage
NMOS open
drain pins
Standard-
voltage
NMOS open
drain pins
Bidirectional
signal line
System control
RAM
(256 × 4 bits)
W
(2 bits)
X
(4 bits)
SPX
(4 bits)
Y
(4 bits)
SPY
(4 bits)
ALU
ST
CA
(1 bit) (1 bit)
A
(4 bits)
B
(4 bits)
SP
(10 bits)
Instruction
decoder
PC
(14 bits)
ROM
(1,024 × 10 bits)
(2,048 × 10 bits)
(4,096 × 10 bits)
D₀
D₁
D₂
D₃
D₄
D₅
R0₀
R0₁
R0₂
R0₃
R1₀
R1₁
R1₂
R1₃
R2₀
R2₁
R2₂
R2₃
R3₁
R3₂
R3₃
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