Cypress CY7C1471V25, CY7C1473V25, CY7C1475V25 8V TAP AC Test Conditions, 5V TAP AC Test Conditions

CY7C1471V25

CY7C1473V25

CY7C1475V25

1.8V TAP AC Test Conditions

Input pulse levels	0.2V to VDDQ – 0.2
Input rise and fall time	1 ns
Input timing reference levels	0.9V
Output reference levels	0.9V
Test load termination supply voltage	0.9V

2.5V TAP AC Test Conditions

Input pulse levels	VSS to 2.5V
Input rise and fall time	1 ns
Input timing reference levels	1.25V
Output reference levels	1.25V
Test load termination supply voltage	1.25V

1.8V TAP AC Output Load Equivalent

2.5V TAP AC Output Load Equivalent

0.9V

1.25V

50Ω

50Ω

TDO

TDO

ZO= 50Ω

20pF

ZO= 50Ω

20pF

TAP DC Electrical Characteristics And Operating Conditions

(0°C < T < +70°C; V

DD

= 2.375 to 2.625 unless otherwise noted)[12]

A

Parameter

Description

Test Conditions

Min.

Max.

Unit

VOH1

Output HIGH Voltage

IOH = –1.0 mA, VDDQ = 2.5V

2.0

V

VOH2

Output HIGH Voltage

IOH = –100 µA

VDDQ = 2.5V

2.1

V

VDDQ = 1.8V

1.6

V

VOL1

Output LOW Voltage

IOL = 1.0 mA

VDDQ = 2.5V

0.4

V

VOL2

Output LOW Voltage

IOL = 100 µA

VDDQ = 2.5V

0.2

V

VDDQ = 1.8V

0.2

V

VIH

Input HIGH Voltage

VDDQ = 2.5V

1.7

VDD + 0.3

V

VDDQ = 1.8V

1.26

VDD + 0.3

V

VIL

Input LOW Voltage

VDDQ = 2.5V

–0.3

0.7

V

VDDQ = 1.8V

–0.3

0.36

V

IX

Input Load Current

GND < VIN < VDDQ

–5

5

µA

Identification Register Definitions

Instruction Field

CY7C1471V25

CY7C1473V25

CY7C1475V25

Description

(2MX36)

(4MX18)

(1MX72)

Revision Number (31:29)

000

000

000

Describes the version number

Device Depth (28:24)

01011

01011

01011

Reserved for internal use

Architecture/Memory Type(23:18)

001001

001001

001001

Defines memory type and architecture

Bus Width/Density(17:12)

100100

010100

110100

Defines width and density

Cypress JEDEC ID Code (11:1)

00000110100

00000110100

00000110100

Allows unique identification of SRAM

vendor

ID Register Presence Indicator (0)

1

1

1

Indicates the presence of an ID

register

Note

12. All voltages refer to VSS (GND).

Document #: 38-05287 Rev. *I Page 17 of 32

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