UPD784225YGK-XXX-9EU View Datasheet(PDF) - NEC => Renesas Technology

Part Name

Description

Manufacturer

UPD784225YGK-XXX-9EU

16/8-BIT SINGLE-CHIP MICROCONTROLLERS

NEC => Renesas Technology 

µPD784224, 784225, 784224Y, 784225Y

5.2 Pins Other Than Port Pins (2/2)

Pin Name

RD

WR

WAIT

ASTB

I/O

Output

Input

Output

Alternate Function

P64

P65

P66

P67

EXA

RESET

X1

X2

XT1

XT2

ANI0 to ANI7

ANO0, ANO1

AVREF1

AVDD

AVSS

VDD0

VSS0

VDD1

VSS1

TEST

Output

Input

Input

−

Input

−

Input

Output

−

P37

−

−

−

P10 to P17

P130, P131

−

Function

Strobe signal output for read operation of external memory

Strobe signal output for write operation of external memory

To insert wait state(s) when external memory is accessed

Strobe output to externally latch address information output to ports

4 to 6 to access external memory

External access status output

System reset input

To connect main system clock oscillation crystal

To connect subsystem clock oscillation crystal

Analog voltage input for A/D converter

Analog voltage output for D/A converter

To apply reference voltage for D/A converter

Positive power supply for A/D converter. Connected to VDD0.

GND for A/D converter and D/A converter. Connected to VSS0.

Positive power supply for port block

GND potential for port block

Positive power supply (except port block)

GND potential (except port block)

Connect this pin to VSS0 directly or via pull-down resistor. For the

pull-down connection, use of a resistor with a resistance ranging

from 470 Ω to 10 kΩ is recommended.

Data Sheet U12376EJ1V0DS00

15

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