M69AW024B datasheet(23/29 Pages) STMICROELECTRONICS

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M69AW024B

Table 9. Power Down and Power-Up AC Parameters

Note: 1. Some data may be written to any address location if tEHWH is less than the minimum required time.

2. The device has to enter and exit Power Down mode after tCHCL.

3. The Input Transition Time used in AC measurements is 5ns.

Figure 18. Standby Mode Entry AC Waveforms, After Read or Write

Note: Both tEHGH and tEHWH define the earliest entry timing for Stand-by mode. If either of timing is not satisfied, it takes the tAVAX(min) period

from either the last address transition of A0, A1 and A2, or E1 rising edge.

Symbol

Alt.

Parameter

M69AW024B

Unit

–60

–70

Min

Max

Min

Max

tCLEL

tCSP

E2 Low Setup Time for Power Down Entry

tELCH

tC2LP

E2 Low Hold Time after Power Down Entry

tCHEL

tCHH

E1 High Hold Time following E2 High after Power-

Down Exit (Sleep Mode only)

350

µs

tEHEL

tCHHP

E1 High Hold Time following E2 High after Power-

Down Exit (not in Sleep Mode)

400

µs

tEHCH1

tCHS

E1 High Setup Time following E2 High after Power-

Down Exit

tEHCH2

tC2LH

Power-up Time 1

µs

tCHCL1

tCHCL2

tC2HL

Power-up Time 2

µs

tEHGH

tCHOX

E1 High to G Invalid Time for Standby Entry

tEHWH

tCHWX

E1 High to W Invalid Time for Standby Entry

Input Transition Time

AI07741

tEHGH

tEHWH

Active (Write)

Standby

Active (Read)

Standby

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