HD4074344 Datasheet, PDF (11/100 Pages) Hitachi Semiconductor – 4-bit microcomputers

HD404344R Series/HD404394 Series
HD404394 Series
Item
Power supply
Test
Reset
Oscillator
Port
Interrupt
Stop clear
Serial interface
Timer
A/D converter
Symbol
V_CC
GND
TEST
Pin Number
DP-28S/
FP-28DA FP-30D
16
18
11
11
17
19
RESET 18
20
OSC₁
9
9
OSC₂
D₀–D₅
10
23–28
10
25–30
R0₀–R0₃,
R1₀–R1₃,
R2₀–R2₃,
R3₁–R3₃
INT₀
STOPC
1–8,
13–15
19–22
23
27
1–8,
14–16,
21–24
25
29
SCK
19
21
SI
20
22
SO
21
23
TOC
22
24
EVNB 23
25
V_ref
12
13
AN₁–AN₃ 13–15 14–16
I/O Function
Applies power voltage
Connects to ground
I Cannot be used in user applications. Connect
this pin to GND.
I Resets the MCU
I Input/output pin for the internal oscillator.
Connect these pins to the ceramic oscillator, or
OSC₁ to an external oscillator circuit
O
I/O Input/output pins addressed individually by bits;
pins D₁ and D₂ can sink 15 mA max.
I/O Four-bit input/output pins. Pins R1₀–R1₂ are
NMOS intermediate-voltage open drain pins.
Pins R1₃–R2₃ are NMOS standard-voltage open
drain pins which can sink 15 mA max.
I Input pin for external interrupts
I Input pin for transition from stop mode to active
mode
I/O Serial interface clock input/output pin
I Serial interface receive data input pin
O Serial interface transmit data output pin
O Timer output pin
I Event count input pin
Power supply for the internal ladder resistor in
the A/D converter
I Analog input pins for the A/D converter
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