CY7C1334 查看數據表（PDF） - Cypress Semiconductor
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CY7C1334 Datasheet PDF : 12 Pages
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CY7C1334
Write Cycle Description[8, 9]
Function
Read
Write - No bytes written
Write Byte 0 - DQ[7:0]
Write Byte 1 - DQ[15:8]
Write Bytes 1, 0
Write Byte 2 - DQ[23:16]
Write Bytes 2, 0
Write Bytes 2, 1
Write Bytes 2, 1, 0
Write Byte 3 - DQ[31:24]
Write Bytes 3, 0
Write Bytes 3, 1
Write Bytes 3, 1, 0
Write Bytes 3, 2
Write Bytes 3, 2, 0
Write Bytes 3, 2, 1
Write All Bytes
WE
BWS3
BWS2
BWS1
BWS0
1
X
X
X
X
0
1
1
1
1
0
1
1
1
0
0
1
1
0
1
0
1
1
0
0
0
1
0
1
1
0
1
0
1
0
0
1
0
0
1
0
1
0
0
0
0
0
1
1
1
0
0
1
1
0
0
0
1
0
1
0
0
1
0
0
0
0
0
1
1
0
0
0
1
0
0
0
0
0
1
0
0
0
0
0
Maximum Ratings
Current into Outputs (LOW) ........................................ 20 mA
(Above which the useful life may be impaired. For user guide-
lines, not tested.)
Storage Temperature ..................................... −65°C to +150°C
Static Discharge Voltage .......................................... >2001V
(per MIL-STD-883, Method 3015)
Latch-Up Current.................................................... >200 mA
Ambient Temperature with
Power Applied.................................................. −55°C to +125°C
Supply Voltage on VDD Relative to GND.........−0.5V to +4.6V
DC Voltage Applied to Outputs
in High Z State[10]....................................−0.5V to VDDQ + 0.5V
Operating Range
Range
Ambient
Temperature[11]
Com’l
0°C to +70°C
VDD/VDDQ
3.3V ± 5%
DC Input Voltage[10]................................−0.5V to VDDQ + 0.5V
Notes:
8. X=”Don't Care”, 1=Logic HIGH, 0=Logic LOW.
9. Write is initiated by the combination of WE and BWSx.Bytes written are determined by BWS[3:0]. Bytes not selected during byte writes remain unaltered. All I/Os
are three-stated during byte writes.
10. Minimum voltage equals –2.0V for pulse durations less than 20 ns.
11. TA is the case temperature.
Document #: 38-05065 Rev. **
Page 6 of 12
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