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CY7C1381DV25, CY7C1381FV25
CY7C1383DV25, CY7C1383FV25
Document #: 38-05547 Rev. *E Page 14 of 28
2.5V TAP AC Test Conditions
Input pulse levels.................................................V
SS
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
2.5V TAP AC Output Load Equivalent
TDO
1.25V
20pF
Z = 50 Ω
O
50Ω
TAP DC Electrical Characteristics And Operating Conditions
(0°C < TA < +70°C; V
DD
= 2.5V ±0.125V unless otherwise noted)
[12]
Parameter Description Test Conditions Min. Max. Unit
V
OH1
Output HIGH Voltage I
OH
= –1.0 mA, V
DDQ
= 2.5V 2.0 V
V
OH2
Output HIGH Voltage I
OH
= –100 µA, V
DDQ
= 2.5V 2.1 V
V
OL1
Output LOW Voltage I
OL
= 8.0 mA, V
DDQ
= 2.5V 0.4 V
V
OL2
Output LOW Voltage I
OL
= 100 µA V
DDQ
= 2.5V 0.2 V
V
IH
Input HIGH Voltage V
DDQ
= 2.5V 1.7 V
DD
+ 0.3 V
V
IL
Input LOW Voltage V
DDQ
= 2.5V –0.3 0.7 V
I
X
Input Load Current GND < V
IN
< V
DDQ
–5 5 µA
Identification Register Definitions
Instruction Field
CY7C1381DV25/
CY7C1381FV25
(512K x 36)
CY7C1383DV25/
CY7C1383FV25
(1 Mbit x 18)
Description
Revision Number (31:29) 000 000 Describes the version number
Device Depth (28:24) 01011 01011 Reserved for internal use.
Device Width (23:18) 119-BGA 101001 101001 Defines the memory type and architecture
Device Width (23:18) 165-FBGA 000001 000001 Defines the memory type and architecture
Cypress Device ID (17:12) 100101 010101 Defines the width and density
Cypress JEDEC ID Code (11:1) 00000110100 00000110100 Allows unique identification of SRAM vendor
ID Register Presence Indicator (0) 1 1 Indicates the presence of an ID register
Scan Register Sizes
Register Name Bit Size (x36) Bit Size (x18)
Instruction Bypass 3 3
Bypass 1 1
ID 32 32
Boundary Scan Order (119-ball BGA package) 85 85
Boundary Scan Order (165-ball FBGA package) 89 89
Note
12.All voltages referenced to V
SS
(GND).
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