CY7C1345B
Write Cycle Descriptions
[1, 2, 3, 4]
Function
Read
Read
Write Byte 0, DP
0
Write Byte 1, DP
1
Write Bytes 1, 0, DP
0
, DP
1
Write Byte 2, DP
2
Write Bytes 2, 0, DP
2
, DP
0
Write Bytes 2, 1, DP
2
, DP
1
Write Bytes 2, 1, 0, DP
2
, DP
1
, DP
0
Write Byte 3, DP
3
Write Bytes 3, 0, DP
3
, DP
0
Write Bytes 3, 1, DP
3
, DP
0
Write Bytes 3, 1, 0, DP
3
, DP
1
, DP
0
Write Bytes 3, 2, DP
3
, DP
2
Write Bytes 3, 2, 0, DP
3
, DP
2
, DP
0
Write Bytes 3, 2, 1, DP
3
, DP
2
, DP
1
Write All Bytes
Write All Bytes
GW
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
BWE
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
X
BW
3
X
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
X
BW
2
X
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
X
BW
1
X
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
X
BW
0
X
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
X
ZZ Mode Electrical Characteristics
Parameter
I
CCZZ
t
ZZS
t
ZZREC
Description
Snooze mode
standby current
Device operation to
ZZ
ZZ recovery time
Test Conditions
ZZ > V
DD
−
0.2V
ZZ > V
DD
−
0.2V
ZZ < 0.2V
2t
CYC
Min.
Max.
10
2t
CYC
mA
ns
ns
Unit
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 V
DD
Relative to GND........ –0.5V to +4.6V
DC Voltage Applied to Outputs
in High Z State
[5]
....................................–0.5V to V
DD
+ 0.5V
DC Input Voltage
[5]
.................................–0.5V to V
DD
+ 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]
Com’l
Ind’l
0°C to +70°C
–40°C to +85°C
V
DD
3.135V to 3.6V
V
DDQ
2.375V to V
DD
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. T
A
is the case temperature.
7
CYPRESS [ CYPRESS SEMICONDUCTOR ]
