Electronic Components Datasheet Search
  New Zealand  ▼
ALLDATASHEET.CO.NZ

X  

FM3808 Datasheet(PDF) 21 Page - Ramtron International Corporation

Part # FM3808
Description  256Kb Bytewide FRAM w/ Real-Time Clock
PDF  28 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  RAMTRON [Ramtron International Corporation]
Direct Link  http://www.ramtron.com
Logo RAMTRON - Ramtron International Corporation

FM3808 Datasheet(HTML) 21 Page - Ramtron International Corporation

Back Button FM3808 Datasheet HTML 17Page - Ramtron International Corporation FM3808 Datasheet HTML 18Page - Ramtron International Corporation FM3808 Datasheet HTML 19Page - Ramtron International Corporation FM3808 Datasheet HTML 20Page - Ramtron International Corporation FM3808 Datasheet HTML 21Page - Ramtron International Corporation FM3808 Datasheet HTML 22Page - Ramtron International Corporation FM3808 Datasheet HTML 23Page - Ramtron International Corporation FM3808 Datasheet HTML 24Page - Ramtron International Corporation FM3808 Datasheet HTML 25Page - Ramtron International Corporation Next Button
Zoom Inzoom in Zoom Outzoom out
 21 / 28 page
background image
FM3808
Rev 1.1
May 2003
Page 21 of 28
Read Cycle AC Parameters (TA = -40° C to + 85° C, VDD = 4.5V to 5.5V unless otherwise specified)
Symbol
Parameter
Min
Max
Units
Notes
tCE
Chip Enable Access Time ( to data valid)
70
ns
tCA
Chip Enable Active Time
70
2,000
ns
tRC
Read Cycle Time
130
ns
tPC
Precharge Time
60
ns
tAS
Address Setup Time
0
ns
tAH
Address Hold Time
10
ns
tOE
Output Enable Access Time
10
ns
tHZ
Chip Enable to Output High-Z
15
ns
1
tOHZ
Output Enable to Output High-Z
15
ns
1
Write Cycle AC Parameters (TA = -40° C to + 85° C, VDD = 4.5V to 5.5V unless otherwise specified)
Symbol
Parameter
Min
Max
Units
Notes
tCA
Chip Enable Active Time
70
2,000
ns
tCW
Chip Enable to Write High
70
ns
tWC
Write Cycle Time
130
ns
tPC
Precharge Time
60
ns
tAS
Address Setup Time
0
ns
tAH
Address Hold Time
10
ns
tWP
Write Enable Pulse Width
30
ns
tDS
Data Setup
30
ns
tDH
Data Hold
5
ns
tWZ
Write Enable Low to Output High Z
15
ns
1
tWX
Write Enable High to Output Driven
10
ns
1
tHZ
Chip Enable to Output High-Z
15
ns
1
tWS
Write Setup
0
ns
2
tWH
Write Hold
0
ns
2
Notes
1
This parameter is periodically sampled and not 100% tested.
2
The relationship between /CE and /WE determines if a /CE- or /WE-controlled write occurs. There is no timing
specification associated with this relationship.
Power Cycle Timing (TA = -40° C to + 85° C)
Symbol
Parameter
Min
Max
Units
Notes
tINT
INT signal active after VTP
100
ns
1,2
tPD
Last Access Complete to VLO
0
ns
1,3
tRI
VLO to inputs recognized on power-up
1
µs
1,4
tR
Rise time of VDD from VBG to VLO
100
µs
1,5
tF
Fall time of VDD from VLO to VBG
100
µs
1,5
Notes
1
This parameter is periodically sampled and not 100% tested.
2
If power monitor is programmed to generate INT.
3
Access is blocked at VLO. The last access should be complete prior to reaching VLO. The early warning power fail interrupt
may be useful in accomplishing this.
4
Failing to satisfy tRI may result in the first access being ignored. Failure to raise /CE to a logic high prior to VDD>VLO may
result in improper operation.
5
Slew rate for proper transition between the locked-out condition and normal operation.



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28


Datasheet Download

Go To PDF Page


Link URL



Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link to Datasheet    |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com