Cypress NoBL CY7C1470BV25 User Manual download pdf (Page 16)

CY7C1470BV25

CY7C1472BV25, CY7C1474BV25

Document #: 001-15032 Rev. *D Page 16 of 29

2.5V TAP AC Test Conditions

Input pulse levels.................................................V

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

Note

11. All voltages refer to V

(GND).

Figure 5. 2.5V TAP AC Output Load Equivalent

TDO

1.25V

20pF

Z = 50Ω

50Ω

TAP DC Electrical Characteristics And Operating Conditions

(0°C < T

< +70°C; V

= 2.5V ±0.125V unless otherwise noted)

[11]

Parameter Description Test Conditions Min Max Unit

OH1

Output HIGH Voltage I

= –1.0 mA, V

DDQ

= 2.5V 1.7 V

OH2

Output HIGH Voltage I

= –100 μA, V

DDQ

= 2.5V 2.1 V

OL1

Output LOW Voltage I

= 1.0 mA, V

DDQ

= 2.5V 0.4 V

OL2

Output LOW Voltage I

= 100 μA, V

DDQ

= 2.5V 0.2 V

Input HIGH Voltage V

DDQ

= 2.5V 1.7 V

+ 0.3 V

Input LOW Voltage V

DDQ

= 2.5V –0.3 0.7 V

Input Load Current GND ≤ V

≤ V

DDQ

–5 5 μA

Table 6. Identification Register Definitions

Instruction Field

CY7C1470BV25

(2M x 36)

CY7C1472BV25

(4M x 18)

CY7C1474BV25

(1M x 72)

Description

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) 001000 001000 001000 Defines memory type and archi-

tecture

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

Table 7. Scan Register Sizes

Instruction 3 3 3

Bypass 1 1 1

ID 32 32 32

Boundary Scan Order–165FBGA 71 52 –

Boundary Scan Order–209BGA – – 110

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