M69AR048B

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Table 13. Standby Mode AC Characteristics

Note: 1. Applicable also to Power-up.

2. Applicable when 4M, 8M or 16M Partial Power-Down mode is programmed

3. Some data might be written into any address location if tEHWL (min) is not satisfied.

4. The Input Transition Time (t

τ ) at AC testing is 5ns as shown below. If actual tτ is longer than 5ns, it may violate AC specification

of some timing parameters.

Figure 23. Power-Down Programming AC Waveforms

Note: E2 = High.

1. All address inputs must be High from Cycle 1 to Cycle 5.

2. PDCADD stands for Power-Down Configuration Address. It must be compliant with the format specified in Table 6 otherwise the

data programmed during the Power-Down Program sequence may be incorrect.

3. PDCDAT stands for Power-Down Configuration Data. It must be compliant with the format specified in Table 5 otherwise the data

programmed during the Power-Down Program sequence may be incorrect.

Symbol

Alt.

Parameter

M69AR048B

Unit

80, 85

Min

Max

E2 Low Setup Time for Power-Down Entry

10

ns

E2 Low Hold Time after Power-Down Entry

85

ns

(1)

E1 High Hold Time following E2 High after Power-Down Exit

(Deep Power-Down Mode only)

300

µs

(2)

E1 High Hold Time following E2 High after Power-Down Exit

(not in Deep Power-Down Mode)

1µs

E1 High Setup Time following E2 High after Power-Down Exit

0

µs

E1 High to G Invalid Time for Standby Entry

10

ns

(3)

E1 High to W Invalid Time for Standby Entry

10

ns

t

t

τ

Input Transition Time

1

25

ns

AI07225c

A0-A20

E1

W

DQ0-DQ15

MSB 2

G

MSB 2

MSB 2

MSB 2

MSB 2

PDCADD3

LB, UB

tAXAV

tAVAX

RDa

RDa

RDa

00

RDb

Cycle 1

Cycle 2

Cycle 3

Cycle 4

Cycle 5

Cycle 6