CXP82540 Ver la hoja de datos (PDF) - Sony Semiconductor

Número de pieza

componentes Descripción

Fabricante

CXP82540

CMOS 8-bit Single Chip Microcomputer

Sony Semiconductor 

CXP82532/82540

(4) Interrupts, reset inputs

Item

External interrupt High and

Low level widths

Reset input Low level width

(Ta = –20 to +75°C, VDD = 4.5 to 5.5V, Vss = 0V)

Symbol Pin Condition Min. Max. Unit

INT0

tIH

INT1

tIL

INT2

INT3

tRSL

RST

1

µs

8/fc

µs

Fig. 7. Interrupt input timing

tIH

INT0

INT1

INT2

INT3

0.8VDD

tIL

0.2VDD

tIL

0.2VDD

tIH

0.8VDD

Fig. 8. RST input timing

tRSL

RST

0.2VDD

(5) Power-on reset

Power-on reset∗

(Ta = –20 to +75°C, VDD = 4.5 to 5.5V, VSS = 0V)

Item

Symbol Pin

Condition

Power supply rising time tR

Power supply cut-off time tOFF VDD

Power-on reset

Repetitive power-on reset

∗ Specifies only when power-on reset function is selected.

Min.

Max. Unit

0.05

50

ms

1

ms

Fig. 9. Power-on reset

4.5V

VDD

0.2V

0.2V

tR

tOFF

The power supply should be rise smoothly.

– 18 –

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