Epson SED1278F/D Especificações descarregar pdf (Página 296)

EPSON 8–55

SED1240 Series

SED1240

Series

AH8

CYC8

DS8

DH8

A0, CS

D0 to D7

AH8

AC CHARACTERISTICS

System Bus Write Characteristics I (80 series MPU)

Item Signal Symbol

Measuring

Min. Max. Unit

condition

Address hold time A0, CS t

AH8 –30–ns

Address setup time t

AW8 –60–ns

System cycle time WR tCYC8 – 300 – ns

Control pulse width (WR) t

CC –60–ns

Data setup time D0 to D7 tDS8 –60–ns

Data hold time t

DH8 –50–ns

[VSS = –5.5 V to –4.5 V, Ta = –30 to 85°C unless otherwise specified]

*1: At the fall and rise time of input signals, set 15 ns or less.

*2: Every timing is specified on 20% and 80% of V

SS.

*3: The same timing is not required for A0 and CS. Input signals so that A0 and CS may satisfy

tAW8 and tAH8

respectively.

Item Signal Symbol

Measuring

Min. Max. Unit

condition

Address hold time A0, CS tAH8 –30–ns

Address setup time tAW8 –60–ns

System cycle time WR t

CYC8 – 500 – ns

Control pulse width (WR) tCC – 100 – ns

Data setup time D0 to D7 t

DS8 – 100 – ns

Data hold time tDH8 –50–ns

[VSS = –4.5 V to –2.4 V, Ta = –30 to 85°C unless otherwise specified]

Item Signal Symbol

Measuring

Min. Max. Unit

condition

Address hold time A0, CS t

AH8 –30–ns

Address setup time t

AW8 –60–ns

System cycle time WR tCYC8 – 1000 – ns

Control pulse width (WR) t

CC – 200 – ns

Data setup time D0 to D7 tDS8 – 200 – ns

Data hold time t

DH8 –50–ns

[VSS = –2.4 V to –1.8 V, Ta = –30 to 85°C unless otherwise specified]

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Epson SED1278F/D Especificações Página 296

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