数据搜索系统,热门电子元器件搜索
  Chinese  ▼
ALLDATASHEETCN.COM

X  

FM28V202-TG 数据表(PDF) 7 Page - Cypress Semiconductor

部件名 FM28V202-TG
功能描述  2Mbit (128Kx16)F-RAM Memory
Download  18 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  CYPRESS [Cypress Semiconductor]
网页  http://www.cypress.com
标志 CYPRESS - Cypress Semiconductor

FM28V202-TG 数据表(HTML) 7 Page - Cypress Semiconductor

Back Button FM28V202-TG Datasheet HTML 3Page - Cypress Semiconductor FM28V202-TG Datasheet HTML 4Page - Cypress Semiconductor FM28V202-TG Datasheet HTML 5Page - Cypress Semiconductor FM28V202-TG Datasheet HTML 6Page - Cypress Semiconductor FM28V202-TG Datasheet HTML 7Page - Cypress Semiconductor FM28V202-TG Datasheet HTML 8Page - Cypress Semiconductor FM28V202-TG Datasheet HTML 9Page - Cypress Semiconductor FM28V202-TG Datasheet HTML 10Page - Cypress Semiconductor FM28V202-TG Datasheet HTML 11Page - Cypress Semiconductor Next Button
Zoom Inzoom in Zoom Outzoom out
 7 / 18 page
background image
FM28V202 - 128Kx16 F-RAM
Document Number: 001-86602 Rev. **
Page 7 of 18
Software Write Protect Timing
CE
A(16:0)
WE
DQ(7:0)
12555
Data
Data
OE
01333
0ECCC
000FF
1FF00
1DAAA
0ECCC
0FF00
00000
1DAAA
Figure 3. Sequence to Set Write-Protect Blocks
Note: This sequence requires tAS ≥ 10ns and address must be stable while /CE is low.
CE
A(16:0)
WE
DQ(15:0)
12555
X
0x18
OE
01333
0ECCC
000FF
1FF00
0ECCC
00000
1DAAA
tCE (read access time)
1AAAA
Figure 4. Sequence to Read Write-Protect Settings
Note: This sequence requires tAS ≥ 10ns and address must be stable while /CE is low.
SRAM Drop-In Replacement
The FM28V202 has been designed to be a drop-in
replacement for standard asynchronous SRAMs. The
device does not require /CE to toggle for each new
address. /CE may remain low indefinitely. While /CE
is low, the device automatically detects address
changes and a new access is begun. This functionality
allows /CE to be grounded as you might with an
SRAM. It also allows page mode operation at speeds
up to 33MHz. Note that if /CE is tied to ground,
the user must be sure /WE is not low at powerup
or powerdown events. If /CE and /WE are both
low during power cycles, data corruption will
occur. Figure 5 shows a pullup resistor on /WE
which will keep the pin high during power cycles
assuming the MCU/MPU pin tri-states during the
reset condition. The pullup resistor value should
be chosen to ensure the /WE pin tracks VDD yet a
high enough value that the current drawn when
/WE is low is not an issue. A 10Kohm resistor
draws 330uA when /WE is low and VDD=3.3V.
Note that software write-protect is not available to
the user if the chip enable pins are hardwired
active.
Figure 5. Use of Pullup Resistor on /WE
CE
WE
OE
A(16:0)
DQ
FM28V202
VDD
MCU/
MPU
R


类似零件编号 - FM28V202-TG

制造商部件名数据表功能描述
logo
Cypress Semiconductor
FM28V202A CYPRESS-FM28V202A Datasheet
503Kb / 22P
   2-Mbit (128 K 횞 16) F-RAM Memory
FM28V202A-TG CYPRESS-FM28V202A-TG Datasheet
503Kb / 22P
   2-Mbit (128 K 횞 16) F-RAM Memory
FM28V202A-TGTR CYPRESS-FM28V202A-TGTR Datasheet
503Kb / 22P
   2-Mbit (128 K 횞 16) F-RAM Memory
More results

类似说明 - FM28V202-TG

制造商部件名数据表功能描述
logo
Ramtron International C...
FM21LD16 RAMTRON-FM21LD16 Datasheet
217Kb / 14P
   2Mbit F-RAM Memory
FM21L16 RAMTRON-FM21L16_11 Datasheet
292Kb / 15P
   2Mbit F-RAM Memory
logo
Cypress Semiconductor
FM21LD16 CYPRESS-FM21LD16 Datasheet
438Kb / 15P
   2Mbit F-RAM Memory
logo
Ramtron International C...
FM21LD16 RAMTRON-FM21LD16_11 Datasheet
277Kb / 15P
   2Mbit F-RAM Memory
FM22LD16 RAMTRON-FM22LD16_09 Datasheet
215Kb / 14P
   4Mbit F-RAM Memory
logo
Cypress Semiconductor
FM22LD16 CYPRESS-FM22LD16 Datasheet
434Kb / 14P
   4Mbit F-RAM Memory
FM22LD16 CYPRESS-FM22LD16_13 Datasheet
424Kb / 15P
   4Mbit F-RAM Memory
logo
Ramtron International C...
FM21L16 RAMTRON-FM21L16 Datasheet
224Kb / 14P
   2Mbit FRAM Memory
FM22LD16 RAMTRON-FM22LD16 Datasheet
211Kb / 14P
   4Mbit F-RAM Memory
logo
Cypress Semiconductor
FM23MLD16 CYPRESS-FM23MLD16 Datasheet
220Kb / 13P
   8Mbit F-RAM Memory
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18


数据表 下载

Go To PDF Page


链接网址




隐私政策
ALLDATASHEETCN.COM
ALLDATASHEET是否为您带来帮助?  [ DONATE ] 

关于 Alldatasheet   |   广告服务   |   联系我们   |   隐私政策   |   链接交换   |   制造商名单
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