Epson SED1278F/D Especificações descarregar pdf (Página 100)

100

101

SED1220

EPSON 4–35

SED1220

(2) MPU Bus Write Timing (68 series)

Item Signal Symbol

Measuring

Min. Max. Unit

condition

Address setup time A0, CS t

AW6 Every timing is specified 60 – ns

Address hold time t

AH6 on the basis of 20% and 30 – ns

CS setup time t

AC6 80% of VSS.0–ns

System cycle time WR t

CYC6 650 – ns

Enable “L” pulse width (WR)

tEWL 150 – ns

Enable “H” pulse width (WR)

tEWH 450 – ns

Data setup time D0 ~ D7 t

DS6 100 – ns

Data hold time t

DH6 50 – ns

[Ta = –30 to 85°C, VSS = –3.6 V to –2.4 V]

Item Signal Symbol

Measuring

Min. Max. Unit

condition

Address setup time A0, CS t

AW6 Every timing is specified 60 – ns

Address hold time t

AH6 on the basis of 20% and 10 – ns

CS setup time t

AC6 80% of VSS.0–ns

System cycle time WR t

CYC6 500 – ns

Enable “L” pulse width (WR)

tEWL 100 – ns

Enable “H” pulse width (WR)

tEWH 350 – ns

Data setup time D0 ~ D7 t

DS6 100 – ns

Data hold time t

DH6 20 – ns

[Ta = –30 to 85°C, VSS = –3.3 V to –2.7 V]

*1: For the rise and fall of an input signal (tr and tf), set a value not exceeding 25ns (excluding RES input).

*2: t

EWH is specified based on an overlap period of CS “L” and E “H” levels.

× 0.8 [V]

× 0.2 [V]

CYC6

AW6

EWL

AC6

EWH

AH6

DS6

DH6

D0 to D7

1 2 ... 95 96 97 98 99 100 101 102 103 104 105 ... 370 371

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