UPD75208 datasheet(8/62 Pages) NEC

8 / 62 page

µPD75208

Segment output high voltage output.

Static output also possible.

Pin Name

I/O

Dual-

Function Pin

Input / Output

Circuit Type *

Function

After Reset

Digit/segment output dual-function

high-voltage high-current output.

Extra pins can be used as PORTH.

Digit output high-voltage high-current

output.

FIP controller/

driver output

pins.

Pull-down

resistor can be

incorporated in

bit units (mask

option).

T0 to T9

Digit/segment output dual-function

high-voltage high-current output.

Static output also possible.

T10 to T13

T14/S11,

T15/S10

Output

–––

PH3 to PH0

–––

Low level

(with an on-

chip pull-

down

resistor ) or

high

impedance

(without a

pull-down

resistor)

3.2

NON-PORT PINS

Schmitt trigger inputs are circled.

Segment high-voltage output.

S0 to S8

High

impedance

PPO

Output

Input

–––

Timer/pulse generator pulse output.

External event pulse input for timer/event counter.

P13

Serial clock input/output.

TI0

SCK

Serial data output pin or serial data input/output.

Serial data input or normal input.

Edge-detected vectored interrupt input (rising and falling

edge detection).

INT0

INT1

INT4

Input/output

Input

P01

P02

P03

P00

P10

P11

Edge-detected vectored interrupt input with noise

eliminate function (detection edge selection possible).

Edge-detected testable input (rising edge detection).

Fixed frequency output (for buzzer or system clock

trimming).

Crystal/ceramic connect pin for main system clock

oscillation.

External clock input to X1 and its inverted clock input to

X2.

Crystal connect pin for subsystem clock oscillation.

External clock input to XT1 and XT2 open.

INT2

Input

Input/output

P12

P23

BUZ

X1, X2

XT1

Input

FIP controller/driver output buffer power supply.

FIP controller/driver pull-down resistor connect pin.

GND potential.

XT2

–––

System reset input (low level active).

RESET

VPRE

Input

–––

Positive power supply.

VLOAD

VDD

–––

VSS

Input

Input/output

UPD75208 Datasheet(PDF) 8 Page - NEC

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