Cypress CY7C1355C, CY7C1357C 3.3V TAP AC Test Conditions, 3.3V TAP AC Output Load Equivalent, 2.5V TAP AC Test Conditions, 2.5V TAP AC Output Load Equivalent, Identification Register Definitions

CY7C1355C
CY7C1357C
Document #: 38-05539 Rev. *E Page 14 of 28
3.3V TAP AC Test Conditions
Input pulse levels................................................ VSS to 3.3V
Input rise and fall times...................................................1 ns
Input timing reference levels...........................................1.5V
Output reference levels...................................................1.5V
Test load termination supply voltage...............................1.5V
3.3V TAP AC Output Load Equivalent
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
2.5V TAP AC Output Load Equivalent
T
DO
1.5V
20p
F
Z = 50Ω
O
50Ω
T
DO
1.25V
20p
F
Z = 50Ω
O
50Ω
TAP DC Electrical Characteristics And Operating Conditions (0°C < TA < +70°C; VDD = 3.3V ± 0.165V unless
otherwise noted)[12]
Parameter Description Conditions Min. Max. Unit
VOH1 Output HIGH Voltage IOH = –4.0 mA, VDDQ = 3.3V
IOH = –1.0 mA, VDDQ = 2.5V 2.4 V
2.0 V
VOH2 Output HIGH Voltage IOH = –100 µA VDDQ = 3.3V 2.9 V
VDDQ = 2.5V 2.1 V
VOL1 Output LOW Voltage IOL = 8.0 mA VDDQ = 3.3V 0.4 V
IOL = 8.0 mA VDDQ = 2.5V 0.4 V
VOL2 Output LOW Voltage IOL = 100 µA VDDQ = 3.3V 0.2 V
VDDQ = 2.5V 0.2 V
VIH Input HIGH Voltage VDDQ = 3.3V 2.0 VDD + 0.3 V
VDDQ = 2.5V 1.7 VDD + 0.3 V
VIL Input LOW Voltage VDDQ = 3.3V –0.5 0.7 V
VDDQ = 2.5V –0.3 0.7 V
IXInput Load Current GND < VIN < VDDQ –5 5 µA
Identification Register Definitions
Instruction Field CY7C1355C (256Kx36) CY7C1357C (512Kx18) Description
Revision Number (31:29) 010 010 Describes the version number
Device Depth (28:24) 01010 01010 Reserved for Internal Use
Device Width (23:18) 001001 001001 Defines memory type and architecture
Cypress Device ID (17:12) 100110 010110 Defines 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
Note:
12.All voltages referenced to VSS (GND).
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