Cypress CY7C1399B Data Retention Waveform, Switching Waveforms

CY7C1399B

Document #: 38-05071 Rev. *A Page 6 of 10

Data Retention Waveform

3.0V3.0V

tCDR

VDR>2V

DATA RETENTION MODE

VCC

Switching Waveforms

Notes:

10. Device is continuously selected. OE, CE = VIL.

11. WE is HIGH for read cycle.

12. Address valid prior to or coincident with CE transition LOW.

ADDRESS

DATA OUT PREVIOUS DATA VALID DATA VALID

tRC

tAA

tOHA

Read Cycle No. 1[10, 11]

50%

DATA VALID

tRC

tACE

tDOE

tLZOE

tLZCE

tPU

DATA OUT HIGH IMPEDANCE IMPEDANCE

ICC

ISB

tHZOE

tHZCE

tPD

HIGH

VCC

SUPPLY

CURRENT

Read Cycle No. 2[11, 12]

Contents

Main 32K x 8 3.3V Static RAM CY7C1399B I/O Top View Features Maximum Ratings Pin Configuration Operating Range Electrical Characteristics CY7C1399B Electrical Characteristics Capacitance AC Test Loads and Waveforms Page Switching Characteristics Data Retention Characteristics Document #: 38-05071 Rev. *A Page 6 of 10 Data Retention Waveform Read Cycle No. 2 Switching Waveforms Read Cycle No. 1 CY7C1399B Document #: 38-05071 Rev. *A Page 7 of 10 Switching Waveforms Write Cycle No. 1 (WE Controlled)[8, 13, 14] Write Cycle No. 2 (CE Controlled)[8, 13, 14] Truth Table Ordering Information CY7C1399B Package Diagrams