データシートサーチシステム
  Japanese  ▼
ALLDATASHEET.JP

X  

FM24CL32 データシート(PDF) 3 Page - Ramtron International Corporation

部品番号 FM24CL32
部品情報  32Kb Serial 3V F-RAM Memory
Download  12 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
メーカー  RAMTRON [Ramtron International Corporation]
ホームページ  http://www.ramtron.com
Logo RAMTRON - Ramtron International Corporation

FM24CL32 データシート(HTML) 3 Page - Ramtron International Corporation

  FM24CL32 Datasheet HTML 1Page - Ramtron International Corporation FM24CL32 Datasheet HTML 2Page - Ramtron International Corporation FM24CL32 Datasheet HTML 3Page - Ramtron International Corporation FM24CL32 Datasheet HTML 4Page - Ramtron International Corporation FM24CL32 Datasheet HTML 5Page - Ramtron International Corporation FM24CL32 Datasheet HTML 6Page - Ramtron International Corporation FM24CL32 Datasheet HTML 7Page - Ramtron International Corporation FM24CL32 Datasheet HTML 8Page - Ramtron International Corporation FM24CL32 Datasheet HTML 9Page - Ramtron International Corporation Next Button
Zoom Inzoom in Zoom Outzoom out
 3 / 12 page
background image
FM24CL32
Rev. 1.0
May 2009
Page 3 of 12
Overview
The FM24CL32 is a serial F-RAM memory. The
memory array is logically organized as a 4,096 x 8 bit
memory array and is accessed using an industry
standard two-wire interface. Functional operation of
the F-RAM is similar to serial EEPROMs. The major
difference between the FM24CL32 and a serial
EEPROM with the same pinout relates to its superior
write performance.
Memory Architecture
When accessing the FM24CL32, the user addresses
4,096 locations each with 8 data bits. These data bits
are shifted serially. The 4,096 addresses are accessed
using the two-wire protocol, which includes a slave
address (to distinguish other non-memory devices),
and an extended 16-bit address. Only the lower 12
bits are used by the decoder for accessing the
memory. The upper four address bits should be set to
0 for compatibility with larger devices in the future.
The access time for memory operation is essentially
zero beyond the time needed for the serial protocol.
That is, the memory is read or written at the speed of
the two-wire bus. Unlike an EEPROM, it is not
necessary to poll the device for a ready condition
since writes occur at bus speed. That is, by the time a
new bus transaction can be shifted into the part, a
write operation will be complete. This is explained in
more detail in the interface section below.
Users expect several obvious system benefits from
the FM24CL32 due to its fast write cycle and high
endurance as compared with EEPROM. However
there are less obvious benefits as well. For example
in a high noise environment, the fast-write operation
is less susceptible to corruption than an EEPROM
since it is completed quickly. By contrast, an
EEPROM
requiring
milliseconds
to
write
is
vulnerable to noise during much of the cycle.
Note that it is the user’s responsibility to ensure that
VDD is within datasheet tolerances to prevent
incorrect operation.
Two-wire Interface
The FM24CL32 employs a bi-directional two-wire
bus protocol using few pins or board space. Figure 2
illustrates a typical system configuration using the
FM24CL32 in a microcontroller-based system. The
industry standard two-wire bus is familiar to many
users but is described in this section.
By convention, any device that is sending data onto
the bus is the transmitter while the target device for
this data is the receiver. The device that is controlling
the bus is the master. The master is responsible for
generating the clock signal for all operations. Any
device on the bus that is being controlled is a slave.
The FM24CL32 always is a slave device.
The bus protocol is controlled by transition states in
the SDA and SCL signals. There are four conditions
including start, stop, data bit, or acknowledge. Figure
3 illustrates the signal conditions that specify the four
states. Detailed timing diagrams are in the electrical
specifications.
Microcontroller
SDA
SCL
FM24CL32
A0 A1 A2
VDD
Rmin = 1.1 K?
Rmax = tR/Cbus
SDA
SCL
FM24CL32
A0 A1 A2
Figure 2. Typical System Configuration


同様の部品番号 - FM24CL32

メーカー部品番号データシート部品情報
logo
List of Unclassifed Man...
FM24CL04 ETC-FM24CL04 Datasheet
119Kb / 12P
   4Kb FRAM Serial Memory
logo
Ramtron International C...
FM24CL04 RAMTRON-FM24CL04 Datasheet
116Kb / 11P
   4Kb FRAM Serial Memory
FM24CL04-G RAMTRON-FM24CL04-G Datasheet
116Kb / 11P
   4Kb FRAM Serial Memory
logo
List of Unclassifed Man...
FM24CL04-S ETC-FM24CL04-S Datasheet
119Kb / 12P
   4Kb FRAM Serial Memory
logo
Ramtron International C...
FM24CL04-S RAMTRON-FM24CL04-S Datasheet
116Kb / 11P
   4Kb FRAM Serial Memory
More results

同様の説明 - FM24CL32

メーカー部品番号データシート部品情報
logo
Ramtron International C...
FM25V02 RAMTRON-FM25V02 Datasheet
343Kb / 17P
   256Kb Serial 3V F-RAM Memory
FM25V10 RAMTRON-FM25V10 Datasheet
333Kb / 16P
   1Mb Serial 3V F-RAM Memory
logo
Cypress Semiconductor
FM24CL64B CYPRESS-FM24CL64B Datasheet
354Kb / 13P
   64Kb Serial 3V F-RAM Memory
FM24V01 CYPRESS-FM24V01 Datasheet
378Kb / 14P
   128Kb Serial 3V F-RAM Memory
FM24V02 CYPRESS-FM24V02 Datasheet
401Kb / 16P
   256Kb Serial 3V F-RAM Memory
FM25L16B CYPRESS-FM25L16B Datasheet
473Kb / 14P
   16Kb Serial 3V F-RAM Memory
FM24CL16B CYPRESS-FM24CL16B_13 Datasheet
364Kb / 14P
   16Kb Serial 3V F-RAM Memory
FM25H20 CYPRESS-FM25H20 Datasheet
438Kb / 16P
   2Mb Serial 3V F-RAM Memory
FM25V01 CYPRESS-FM25V01 Datasheet
471Kb / 18P
   128Kb Serial 3V F-RAM Memory
logo
Ramtron International C...
FM24V02 RAMTRON-FM24V02 Datasheet
200Kb / 15P
   256Kb Serial 3V F-RAM Memory
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12


データシート ダウンロード

Go To PDF Page


リンク URL




プライバシーポリシー
ALLDATASHEET.JP
ALLDATASHEETはお客様のビジネスに役立ちますか?  [ DONATE ] 

Alldatasheetは   |   広告   |   お問い合わせ   |   プライバシーポリシー   |   リンク交換   |   メーカーリスト
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