CY14B256LA-SZ45XIT Cypress Semiconductor Corp, CY14B256LA-SZ45XIT Datasheet - Page 2

• Manufacturer Part Number: CY14B256LA-SZ45XIT
• Description: CY14B256LA-SZ45XIT
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY14B256LA-SZ45XIT

• Format - Memory: RAM
• Memory Type: NVSRAM (Non-Volatile SRAM)
• Memory Size: 256K (32K x 8)
• Speed: 45ns
• Interface: Parallel
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Parameters
The CY14B256LA is a drop in replacement for STK14C88-3 and requires minimum changes in the application board.
However, the differences in parameters should be considered before replacing one part with the other.
differences in parameters between STK14C88-3 and CY14B256LA.
Table 5. Parameter Comparison
October 5, 2009
Parameter
DC Parameters
V
I
I
I
I
I
I
V
V
V
V
AC Switching Parameters
t
t
t
AutoStore / Power Up RECALL Parameters
t
t
t
t
t
t
V
t
t
Software Controlled STORE/RECALL Cycle Parameters
t
t
Hardware STORE Cycle Parameters
t
t
CC1
CC2
CC3
CC4
SB1
SB
OHA
LZCE
LZWE
HRECALL
STORE
VSBL
RESET
SWITCH
DELAY
LZHSB
HHHD
HA
RECALL
HLBL
DHSB
CC
IH
OH
OL
CAP
HDIS
Power Supply
Average V
Average V
during STORE
Average V
t
Average V
during AutoStore Cycle
Average V
Cycling Input)
V
Input High Voltage
Output HIGH Voltage
Output LOW Voltage
Storage Capacitor
Output Hold After Address Change
Chip Enable to Output Active
Output Active After End of Write
Power Up RECALL Duration
STORE Cycle Duration
Low Voltage Trigger (V
Low Voltage Reset Level
Low Voltage Trigger Level
Time Allowed to Complete SRAM Cycle
Address Hold Time
STORE Cycle Duration
RC
CC
= 200 ns, V
Standby Current
Output Disable Voltage
To Output Active Time
High Active Time
LOW to STORE Busy
To Output Active Time
CC
CC
CC
CAP
CC
Current
Current
Current at
Standby Current (Standby,
Current
CC
Description
typ, 25°C
SWITCH
) to
low
Document No. 001-55662 Rev. **
Speed
25 ns
35 ns
45 ns
35 ns
45 ns
1,000
Min
3.0
2.2
2.7
20
5
5
5
STK14C88-3
Not specified
Not specified
Not specified
54 to 264
9 (typ)
(I
(I
OUT
OUT
Max
0.55
2.95
= -4 mA)
300
300
700
= 8 mA)
3.6
2.4
0.4
2.4
52
44
19
17
10
20
3
2
1
-
Min
2.7
2
3
3
3
0
Not Applicable
CY14B256LA
Not specified
61 to 180
35 (typ)
(I
(I
OUT
OUT
25 (t
Table 5
Max
2.65
= -2 mA)
500
200
3.6
2.4
0.4
= 4 mA)
1.9
70
52
10
20
25
25
25
5
5
8
5
-
DELAY
)
lists the
AN55662
Unit
mA
mA
mA
mA
mA
ms
ms
uF
ns
ns
ns
ns
ns
us
ns
ns
us
ns
ns
V
V
V
V
V
V
V
2
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