Rainbow-electronics AT17F080 Manual do Utilizador descarregar pdf (Página 10)

AT17F040/080

3039C–CNFG–11/02

Notes: 1. AC test lead = 50 pF.

2. Float delays are measured with 5 pF AC loads. Transition is measured ± 200 mV from steady-state active levels.

AC Characteristics

Symbol Description

AT17F040 AT17F080

UnitsMin Max Min Max

(1)

OE to Data Delay

Commercial 50 50 ns

Industrial 55 55 ns

(1)

CE to Data Delay

Commercial 60 55 ns

Industrial 60 60 ns

CAC

(1)

CLK to Data Delay

Commercial 75 55 ns

Industrial 80 60 ns

Data Hold from CE, OE, or CLK

Commercial 0 0 ns

Industrial 0 0 ns

(2)

CE or OE to Data Float Delay

Commercial 55 50 ns

Industrial 55 50 ns

CLK Low Time

Commercial 20 20 ns

Industrial 20 20 ns

CLK High Time

Commercial 20 20 ns

Industrial 20 20 ns

SCE

CE Setup Time to CLK

(to guarantee proper counting)

Commercial 35 20 ns

Industrial 40 25 ns

HCE

CE Hold Time from CLK

(to guarantee proper counting)

Commercial 0 0 ns

Industrial 0 0 ns

HOE

OE High Time

(guarantees counter is reset)

Commercial 20 20 ns

Industrial 20 20 ns

MAX

Maximum Input Clock Frequency

SEREN = 0

Commercial 10 10 MHz

Industrial 10 10 MHz

MAX

Maximum Input Clock Frequency

SEREN = 1

Commercial 33 33 MHz

Industrial 33 33 MHz

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 16 17 18

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