CY7C1345-50AC(2000) Просмотр технического описания (PDF) - Cypress Semiconductor
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CY7C1345-50AC Datasheet PDF : 16 Pages
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CY7C1345
Write Cycle Descriptions[1, 2, 3, 4]
Function
Read
Read
Write Byte 0, DP0
Write Byte 1, DP1
Write Bytes 1, 0, DP0, DP1
Write Byte 2, DP2
Write Bytes 2, 0, DP2, DP0
Write Bytes 2, 1, DP2, DP1
Write Bytes 2, 1, 0, DP2, DP1, DP0
Write Byte 3, DP3
Write Bytes 3, 0, DP3, DP0
Write Bytes 3, 1, DP3, DP0
Write Bytes 3, 1, 0, DP3, DP1, DP0
Write Bytes 3, 2, DP3, DP2
Write Bytes 3, 2, 0, DP3, DP2, DP0
Write Bytes 3, 2, 1, DP3, DP2, DP1
Write All Bytes
Write All Bytes
GW
BWE
BW3
BW2
BW1
BW0
1
1
X
X
X
X
1
0
1
1
1
1
1
0
1
1
1
0
1
0
1
1
0
1
1
0
1
1
0
0
1
0
1
0
1
1
1
0
1
0
1
0
1
0
1
0
0
1
1
0
1
0
0
0
1
0
0
1
1
1
1
0
0
1
1
0
1
0
0
1
0
1
1
0
0
1
0
0
1
0
0
0
1
1
1
0
0
0
1
0
1
0
0
0
0
1
1
0
0
0
0
0
0
X
X
X
X
X
Maximum Ratings
(Above which the useful life may be impaired. For user guide-
lines, not tested.)
Storage Temperature .................................–65°C to +150°C
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[5] ....................................–0.5V to VDD + 0.5V
DC Input Voltage[5] ................................ –0.5V to VDD + 0.5V
Current into Outputs (LOW)......................................... 20 mA
Static Discharge Voltage .......................................... >2001V
(per MIL-STD-883, Method 3015)
Latch-Up Current .................................................... >200 mA
Operating Range
Ambient
Range Temperature[6]
VDD
Com’l 0°C to +70°C 3.135V to 3.6V
VDDQ
2.375V to VDD
Notes:
4. When a write cycle is detected, all I/Os are three-stated, even during byte writes.
5. Minimum voltage equals –2.0V for pulse durations of less than 20 ns.
6. TA is the case temperature.
7
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