Cypress CY7C199 manual AC Test Loads and Waveforms5, Data Retention Waveform

CY7C199

AC Test Loads and Waveforms[5]

R1 481Ω R1 481Ω

5V

OUTPUT

30 pF

INCLUDING

JIG AND

SCOPE

	5V
R2	OUTPUT
		5 pF
255 Ω

INCLUDING

JIG AND

SCOPE

	3.0V
R2	10%
	GND
255Ω		≤ tr
C199–5

ALL INPUT PULSES

90% 90%

10%

≤ tr

C199–6

		(a)		(b)
Equivalent to:	THÉ VENIN EQUIVALENT
			167 Ω
OUTPUT				1.73V

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,				∝ A
			CE > VCC – 0.3V,
		Com’l L				10	∝ A
			VIN > VCC – 0.3V or
			V	< 0.3V
[4]	Chip Deselect to Data Retention Time				0		ns
tCDR			IN
tR [5]	Operation Recovery Time				200		∝ s

Data Retention Waveform

		DATA RETENTION MODE
VCC	3.0V	VDR > 2V	3.0V
	tCDR		tR
CE
			C199–7

Note:

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

6.No input may exceed VCC + 0.5V.

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