UPD78F0034BYA View Datasheet(PDF) - NEC => Renesas Technology

Part Name

Description

Manufacturer

UPD78F0034BYA

8-BIT SINGLE-CHIP MICROCONTROLLERS

NEC => Renesas Technology 

µPD78F0034B, 78F0034BY, 78F0034B(A), 78F0034BY(A)

3.2 Non-Port Pins (2/2)

Pin Name I/O

Function

A8 to A15 Output Higher address bus for extending memory externally.

RD

Output Strobe signal output for read operation of external memory.

WR

Strobe signal output for write operation of external memory.

WAIT

Input Inserting wait for accessing external memory.

ASTB

Output Strobe output which externally latches address information output to

ports 4 and 5 to access external memory.

ANI0 to ANI7 Input A/D converter analog input.

ADTRG

Input A/D converter trigger signal input.

AVREF

Input A/D converter reference voltage input.

AVDD

– A/D converter analog power supply.

Set the voltage equal to VDD0 or VDD1.

AVSS

– A/D converter ground potential.

Set the voltage equal to VSS0 or VSS1.

RESET

Input System reset input.

X1

Input Connecting crystal resonator for main system clock oscillation.

X2

–

XT1

Input Connecting crystal resonator for subsystem clock oscillation.

XT2

–

VDD0

– Positive power supply voltage for ports.

VSS0

– Ground potential of ports.

VDD1

– Positive power supply (except ports).

VSS1

– Ground potential (except ports).

VPP

NCNote

– Applying high-voltage for program write/verify. Connect to VSS0 or VSS1

in normal operation mode.

– Not internally connected. Leave open.

Note NC is incorporated only in the 73-pin plastic FBGA.

After Reset

Alternate

Function

Input

P50 to P57

Input

P64

P65

Input

P66

Input

P67

Input

Input

–

–

P10 to P17

P03/INTP3

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

Data Sheet U16369EJ1V0DS

15

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