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FM22LD16-55-BGTR

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P22
FM22LD16
Document Number: 001-86190 Rev. *E Page 16 of 22
Power Cycle and Sleep Mode Timing
Over the Operating Range
Parameter Description Min Max Unit
t
PU
Power-up (after V
DD
min. is reached) to first access time 450 – µs
t
PD
Last write (WE HIGH) to power down time 0 – µs
t
VR
[12, 13]
V
DD
power-up ramp rate 50 – µs/V
t
VF
[12, 13]
V
DD
power-down ramp rate 100 – µs/V
Figure 15. Power Cycle and Sleep Mode Timing
V
DD
t
VF
V
DD
min
min
V
DD
t
VR
t
PU
t
PD
Access Allowed
Note
12. Slope measured at any point on the V
DD
waveform.
13. Cypress cannot test or characterize all V
DD
power ramp profiles. The behavior of the internal circuits is difficult to predict when V
DD
is below the level of a transistor
threshold voltage. Cypress strongly recommends that V
DD
power up faster than 100 ms through the range of 0.4 V to 1.0 V.
FM22LD16
Document Number: 001-86190 Rev. *E Page 17 of 22
Functional Truth Table
CE WE A
17-2
A
1-0
Operation
[14, 15]
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
[15]
L ↓ VVWE-Controlled Write
[15, 16]
L ↓ No Change V Page Mode Write
[17]
↑
L
X
X
X
X
X
X
Starts pre-charge
Notes
14. H = Logic HIGH, L = Logic LOW, V = Valid Data, X = Don't Care,
↓ = toggle LOW, ↑ = toggle HIGH.
15. For write cycles, data-in is latched on the rising edge of CE
or WE, whichever comes first.
16. WE
-controlled write cycle begins as a Read cycle and then A
17-2
is latched.
17. Addresses A
1-0
must remain stable for at least 10 ns during page mode operation.
18. The UB
and LB pins may be grounded if 1) the system does not perform byte writes and 2) the device is not configured as a 512 K x 8.
FM22LD16
Document Number: 001-86190 Rev. *E Page 18 of 22
Ordering Code Definitions
Ordering Information
Access time (ns) Ordering Code Package Diagram Package Type Operating Range
55 FM22LD16-55-BG 001-91158 48-ball FBGA Industrial
FM22LD16-55-BGTR
All the above parts are Pb-free.
Option:
blank = Standard; TR = Tape and Reel
Package Type:
BG = 48-ball FBGA
Access Time: 55 ns
I/O Width: × 16
Voltage: 2.7 V to 3.6 V
4-Mbit Parallel F-RAM
Cypress
22FM LD 16 - 55 - BG TR
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P22

FM22LD16-55-BGTR

Mfr. #:
Buy FM22LD16-55-BGTR
Manufacturer:
Cypress Semiconductor
Description:
F-RAM 4M (256Kx16) 55ns F-RAM
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
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