Cypress Semiconductor CY7C1365C Instrukcja Użytkownika Pobierz pdf (Strona 9)

CY7C1361V25

CY7C1363V25

CY7C1365V25

PRELIMINARY

ZZ Mode Electrical Characteristics

Parameter Description Test Conditions Min. Max. Unit

CCZZ

Snooze mode

standby current

ZZ > V

− 0.2V 15 mA

ZZS

Device operation to

ZZ > V

− 0.2V 2t

CYC

ZZREC

ZZ recovery time ZZ < 0.2V 2t

CYC

Cycle Descriptions

[1, 2, 3]

Next Cycle Add. Used ZZ CE

ADSP ADSC ADV OE DQ Write

Unselected None L X X 1 X 0 X X Hi-Z X

Unselected None L 1 X 0 0 X X X Hi-Z X

Unselected None L X 0 0 0 X X X Hi-Z X

Unselected None L 1 X 0 1 0 X X Hi-Z X

Unselected None L X 0 0 1 0 X X Hi-Z X

Begin Read External L 0 1 0 0 X X X Hi-Z X

Begin Read External L 0 1 0 1 0 X X Hi-Z Read

Continue Read Next L X X X 1 1 0 1 Hi-Z Read

Continue Read Next L X X X 1 1 0 0 DQ Read

Continue Read Next L X X 1 X 1 0 1 Hi-Z Read

Continue Read Next L X X 1 X 1 0 0 DQ Read

Suspend Read Current L X X X 1 1 1 1 Hi-Z Read

Suspend Read Current L X X X 1 1 1 0 DQ Read

Suspend Read Current L X X 1 X 1 1 1 Hi-Z Read

Suspend Read Current L X X 1 X 1 1 0 DQ Read

Begin Write Current L X X X 1 1 1 X Hi-Z Write

Begin Write Current L X X 1 X 1 1 X Hi-Z Write

Begin Write External L 0 1 0 1 0 X X Hi-Z Write

Continue Write Next L X X X 1 1 0 X Hi-Z Write

Continue Write Next L X X 1 X 1 0 X Hi-Z Write

Suspend Write Current L X X X 1 1 1 X Hi-Z Write

Suspend Write Current L X X 1 X 1 1 X Hi-Z Write

ZZ “sleep” None H X X X X X X X Hi-Z X

Note:

1. X = “don't care”, 1 = HIGH, 0 = LOW.

2. The SRAM always initiates a read cycle when ADSP asserted, regardless of the state of GW, BWE, or BW

. Writes may occur only on subsequent clocks

after the ADSP

or with the assertion of ADSC. As a result, OE must be driven HIGH prior to the start of the write cycle to allow the outputs to three-state. OE

is a “Don't Care” for the remainder of the write cycle.

3. OE

is asynchronous and is not sampled with the clock rise. It is masked internally during write cycles. During a read cycle DQ = High-Z when OE is inactive

or when the device is deselected, and DQ = data when OE is active.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 29 30

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