HY62LF16804A Series

Rev.10 /Jan. 2002

7

Notes:

1. A write occurs during the overlap of a low /WE, a low /CS1 and low /UB and /or /LB

2. tWR is measured from the earlier of /CS, /LB, /UB, or /WE going high to the end of write cycle.

3. During this period, I/O pins are in the output state so that the input signals of opposite phase to the

output must not be applied.

4. If the /CS, /LB and /UB low transition occur simultaneously with the /WE low transition or after the

/WE transition, outputs remain in a high impedance state.

5. Q(data out) is the same phase with the write data of this write cycle.

6. Q(data out) is the read data of the next address.

7. Transition is measured +200mV from steady state.

This parameter is sampled and not 100% tested.

8. /CS in high for the standby, low for active

/UB and /LB in high for the standby, low for active

DATA RETENTION ELECTRIC CHARACTERISTIC

°C to 70°C(Commercial)/ -40°C to 85°C

Symbol

Parameter

Test Condition

Min

Typ

Max

Unit

Vcc for Data Retention

/CS > Vcc - 0.2V or

/UB=/LB > Vcc-0.2V,

1.2

-

2.7

V

LL

-

-

15

uA

Data Retention Current

Vcc=1.5V, /CS > Vcc - 0.2V or

/UB=/LB > Vcc-0.2V,

SL

-

-

8

uA

tCDR

Chip Deselect to Data

Retention Time

0

-

-

ns

tR

Operating Recovery Time

See Data Retention Timing Diagram

-

-

ns

Notes:

°C .

2. tRC is read cycle time.

DATA RETENTION TIMING DIAGRAM

/CS or

/UB & /LB

VDR

/CS>Vcc-0.2V or

/UB=/LB > Vcc-0.2V

tCDR

tR

Vss

VCC

2.3V

VIH

DATA RETENTION MODE