STK14C88-NF45 Cypress Semiconductor Corp, STK14C88-NF45 Datasheet - Page 14
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STK14C88-NF45
Manufacturer Part Number
STK14C88-NF45
Description
IC NVSRAM 256KBIT 45NS 32SOIC
Manufacturer
Cypress Semiconductor Corp
Type
NVSRAMr
Specifications of STK14C88-NF45
Format - Memory
RAM
Memory Type
NVSRAM (Non-Volatile SRAM)
Memory Size
256K (32K x 8)
Speed
45ns
Interface
Parallel
Voltage - Supply
4.5 V ~ 5.5 V
Operating Temperature
0°C ~ 70°C
Package / Case
32-SOIC (7.5mm Width)
Word Size
8b
Organization
32Kx8
Density
256Kb
Interface Type
Parallel
Access Time (max)
45ns
Operating Supply Voltage (typ)
5V
Package Type
SOIC
Operating Temperature Classification
Commercial
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
4.5V
Operating Temp Range
0C to 70C
Pin Count
32
Mounting
Surface Mount
Supply Current
70mA
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
STK14C88-NF45
Manufacturer:
SIMTER
Quantity:
20 000
Company:
Part Number:
STK14C88-NF45I
Manufacturer:
SIMTEK
Quantity:
5 947
Part Number:
STK14C88-NF45I
Manufacturer:
SIMTEK
Quantity:
20 000
Company:
Part Number:
STK14C88-NF45ITR
Manufacturer:
SIMTEK
Quantity:
7 145
Software STORE/RECALL Mode Selection
Software-Controlled STORE/RECALL Cycle
Document Number: 001-52038 Rev. *B
Notes
17. The six consecutive addresses must be in the order listed. W must be high during all six consecutive E controlled cycles to enable a nonvolatile cycle.
18. While there are 15 addresses on the STK14C88, only the lower 14 are used to control software modes.
19. I/O state assumes G < V
20. The software sequence is clocked on the falling edge of E controlled reads without involving G (double clocking aborts the sequence).
21. The six consecutive addresses must be in the order listed in the Software STORE/RECALL Mode Selection Table: (0E38, 31C7, 03E0, 3C1F, 303F, 0FC0) for a STORE
NO.
33
34
35
36
37
cycle or (0E38, 31C7, 03E0, 3C1F, 303F, 0C63) for a RECALL cycle. W must be high during all six consecutive cycles.
E
L
L
Standard
t
RECALL
t
t
t
t
ELEH
ELAX
AVAV
AVEL
Symbols
W
H
H
ADDRESS
DQ (DATA
Alt.
t
t
t
E
CW
RC
AS
IL
A
. Activation of nonvolatile cycles does not depend on state of G.
13
STORE/RECALL Initiation Cycle Time
Address Setup Time
Clock Pulse Width
Address Hold Time
RECALL Duration
- A
3C1F
0FC0
3C1F
0E38
31C7
03E0
303F
0E38
31C7
03E0
303F
0C63
0
t
(hex)
AVEL
34
Figure 10. E Controlled Software STORE/RECALL Cycle
ADDRESS #1
t
AVAV
33
Parameter
t
DATA VALID
ELEH
35
t
ELAX
36
Nonvolatile RECALL
Nonvolatile STORE
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Mode
STK14C88-25 STK14C88-35 STK14C88-45
Min
35
25
20
ADDRESS #6
0
t
AVAV
33
DATA VALID
DATA VALID
Max
20
Output High Z
Output High Z
Output Data
Output Data
Output Data
Output Data
Output Data
Output Data
Output Data
Output Data
Output Data
Output Data
I/O
Min
t
STORE
45
30
20
0
29
HIGH IMPEDANCE
/
t
RECALL
Max
37
20
[21]
Min
POWER
55
20
35
Active
Active
0
I
CC2
Max
20
STK14C88
13, 17, 18, 19
13, 17, 18, 19
Unit
ns
ns
ns
ns
μs
Page 14 of 19
Notes
Notes
20, 21
20, 21
20, 21
13
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