Cypress CY7C199 AC Test Loads and Waveforms, Data Retention Characteristics , Data Retention Waveform

CY7C199

Document #: 38-05160 Rev. ** Page 4 of 16

AC Test Loads and Waveforms[5]

Data Retention Characteristics Over the Operating Range (L version only)

Parameter Description Conditions[6] Min. Max. Unit

VDR VCC for Data Retention 2.0 V

ICCDR Data Retention Current Com’l VCC = VDR = 2.0V,

CE > VCC – 0.3V,

VIN > VCC – 0.3V or

VIN < 0.3V

µA

Com’l L 10 µA

tCDR[4] Chip Deselect to Data Retention Time 0ns

tR [5] Operation Recovery Time 200 µs

Data Retention Waveform

Note:

5. tR< 3 ns for the -12 and the -15 speeds. tR< 5 ns for the -20 and slower spe eds

6. No input may exceed VCC + 0.5V.

3.0V

OUTPUT

R1 481Ω

255Ω

30pF

INCLUDING

JIG AND

SCOPE

GND

90%

10% 90%

10%

≤tr≤tr

OUTPUT

R1 481Ω

255Ω

5pF

INCLUDING

JIG AND

SCOPE

(a) (b)

OUTPUT 1.73V

Equivalentto: THÉ VENIN EQUIVALENT

ALL INPUT PULSES

C199–5C199–6

167Ω

C199–7

3.0V3.0V

tCDR

VDR>2V

DATA RETENTION MODE

VCC