CXP81960 데이터 시트보기 (PDF) - Sony Semiconductor

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CXP81960

CMOS 8-bit Single Chip Microcomputer

Sony Semiconductor 

CXP81952/81960

(5) Interruption, reset input

Item

External interruption

high and low level widths

Reset input low level width

(Ta = –20 to +75°C, VDD = 3.0 to 5.5V, Vss = 0V)

Symbol Pins Conditions Min. Max. Unit

INT0

tIH

tIL

INT1

INT2

NMI

PJ0 to PJ7

tRSL

RST

1

µs

32/fc

µs

Fig. 8. Interruption input timing

INT0

INT1

INT2

NMI

PJ0 to PJ7

(During standby release input)

(Falling edge)

tIH

0.8VDD

tIL

0.2VDD

Fig. 9. Reset input timing

tRSL

RST

0.2VDD

(6) Others

Item

EXI input

high and low level widths

Symbol

tEIH

tEIL

Pins

EXI0

EXI1

(Ta = –20 to +75°C, VDD = 3.0 to 5.5V, Vss = 0V)

Conditions

Min.

Max. Unit

tsys = 2000/fc

tFRC × 8 + 200 + tsys

ns

Note) tsys indicates three values according to the contents of the clock control register (address; 00FEH)

upper 2 bits (CPU clock selection).

tsys [ns] = 2000/fc (Upper 2 bits = "00"), 4000/fc (Upper 2 bits = "01"), 16000/fc (Upper 2 bits = "11")

tFRC = 1000/fc [ns]

Fig. 10. Other timings

tEIH

tEIL

EXI0

EXI1

0.8VDD

0.2VDD

– 24 –

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