AC Characteristics 3,4

TA = 0° to 70°C; VSS = 0V; VCC = 3.3V ± 0.3V, tT = 1 ns

Limit Values

-10PC

#

Symbol

Parameter

Min.

Max.

Unit

Note

Clock and Clock Enable

1

tCK

Clock Cycle Time System frequency Clock Access TimeClock High Pulse WidthClock Low Pulse WidthInput Setup timeInput Hold Time

CKE Setup Time (Power down mode)CKE Setup Time (Self Refresh Exit)Transition time (rise and fall)

1010––––33212.581

10010066–––––––

nsnsMHzMHz

4,5

nsnsnsnsnsnsnsnsns

667789

2

fCK

3

tAC

45678910

tCHtCLtCStCHtCKSPtCKSRtT

Common Parameters

111213141516

tRCDtRCtRAStRPtRRDtCCD

Cycle Time

Active Command PeriodPrecharge Time

Bank to Bank Delay Time

(same bank)

20704520161

–120k––––

nsnsnsnsnsCLK

Refresh Cycle

1718

tSREXtREF

Self Refresh Exit TimeRefresh Period (8192 cycles)

1064

––

nsms

98

Read Cycle

19202122

tOHtLZtHZtDQZ

Data Out Hold Time

Data Out to Low Impedance TimeData Out to High Impedance TimeDQM Data Out Disable Latency

3032

––9–

nsnsnsCLK

104

Write Cycle

232425

tDPLtDALtDQW

Data input to Precharge (write recovery)Data In to Active/refreshDQM Write Mask Latency

250

–––

CLKCLKCLK

11