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FM28V020-TGTR

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21
FM28V020
Document Number: 001-86204 Rev. *F Page 13 of 21
Figure 12. Page Mode Write Cycle Timing
t
ASP
t
DH
A
WE
t
CA
t
PC
DQ
t
CW
A Col 0 Col 1
Data 0
Col 2
t
AS
t
DS
Data 1
t
WP
Data 2
OE
t
AHP
t
PWC
t
AH
CE
t
WLC
14-3
2-0
7-0
Power Cycle Timing
Over the Operating Range
Parameter Description Min Max Unit
t
PU
Power-up (after V
DD
min. is reached) to first access time 250 – µs
t
PD
Last write (WE HIGH) to power down time 0 – µs
t
VR
[11]
V
DD
power-up ramp rate 50 – µs/V
t
VF
[11]
V
DD
power-down ramp rate 100 – µs/V
Figure 13. Power Cycle Timing
V
DD
t
VF
1.0 V
V
DD
min
min
V
DD
1.0 V
t
VR
t
PU
t
PD
Access Allowed
Note
11. Slope measured at any point on the V
DD
waveform.
FM28V020
Document Number: 001-86204 Rev. *F Page 14 of 21
Functional Truth Table
CE WE A
14
-A
3
A
2
-A
0
Operation
[12, 13]
H X X X Standby/Idle
↓
L
H
H
V
V
V
V
Read
L H No Change Change Page Mode Read
L H Change V Random Read
↓
L
L
L
V
V
V
V
CE
-Controlled Write
[13]
L ↓ VVWE-Controlled Write
[13, 14]
L ↓ No Change V Page Mode Write
[15]
↑
L
X
X
X
X
X
X
Starts pre-charge
Notes
12. H = Logic HIGH, L = Logic LOW, V = Valid Data, X = Don't Care,
↓ = toggle LOW, ↑ = toggle HIGH.
13. For write cycles, data-in is latched on the rising edge of CE
or WE, whichever comes first.
14. WE
-controlled write cycle begins as a Read cycle and then A
14
-A
3
is latched.
15. Addresses A
2
-A
0
must remain stable for at least 15 ns during page mode operation.
FM28V020
Document Number: 001-86204 Rev. *F Page 15 of 21
Ordering Code Definitions
Ordering Information
Access
time
(ns)
Ordering Code
Package
Diagram
Package Type
Operating
Range
70 FM28V020-SG 51-85026 28-pin SOIC Industrial
FM28V020-SGTR 51-85026 28-pin SOIC
FM28V020-T28G 001-91155 28-pin TSOP I
FM28V020-T28GTR 001-91155 28-pin TSOP I
FM28V020-TG 001-91156 32-pin TSOP I
FM28V020-TGTR 001-91156 32-pin TSOP I
All the above parts are Pb-free.
Option:
blank = Standard; TR = Tape and Reel
Package Type:
SG = 28-pin SOIC; T28G = 28-pin TSOP I; TG = 32-pin TSOP I
Density: 020 = 256-Kbit
Voltage: V = 2.0 V to 3.6 V
Parallel F-RAM
Cypress
28FM V 020 - SG TR
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21

FM28V020-TGTR

Mfr. #:
Buy FM28V020-TGTR
Manufacturer:
Cypress Semiconductor
Description:
F-RAM 256Kb FRAM 2.0V-3.6V FRAM
Lifecycle:
New from this manufacturer.
Delivery:
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