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

X  

FM24C64-S データシート(PDF) 4 Page - Ramtron International Corporation

部品番号 FM24C64-S
部品情報  64Kb FRAM Serial 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

FM24C64-S データシート(HTML) 4 Page - Ramtron International Corporation

  FM24C64-S Datasheet HTML 1Page - Ramtron International Corporation FM24C64-S Datasheet HTML 2Page - Ramtron International Corporation FM24C64-S Datasheet HTML 3Page - Ramtron International Corporation FM24C64-S Datasheet HTML 4Page - Ramtron International Corporation FM24C64-S Datasheet HTML 5Page - Ramtron International Corporation FM24C64-S Datasheet HTML 6Page - Ramtron International Corporation FM24C64-S Datasheet HTML 7Page - Ramtron International Corporation FM24C64-S Datasheet HTML 8Page - Ramtron International Corporation FM24C64-S Datasheet HTML 9Page - Ramtron International Corporation Next Button
Zoom Inzoom in Zoom Outzoom out
 4 / 12 page
background image
FM24C64
Rev. 3.0
Mar. 2005
4 of 12
Figure 3. Data Transfer Protocol
Stop Condition
A Stop condition is indicated when the bus master
drives SDA from low to high while the SCL signal is
high. All operations must end with a Stop condition.
If an operation is pending when a stop is asserted, the
operation will be aborted. The master must have
control of SDA (not a memory read) in order to assert
a Stop condition.
Start Condition
A Start condition is indicated when the bus master
drives SDA from high to low while the SCL signal is
high. All read and write transactions begin with a
Start condition. An operation in progress can be
aborted by asserting a Start condition at any time.
Aborting an operation using the Start condition will
ready the FM24C64 for a new operation.
If during operation the power supply drops below the
specified VDD minimum, the system should issue a
Start condition prior to performing another operation
Data/Address Transfer
All data transfers (including addresses) take place
while the SCL signal is high. Except under the two
conditions described above, the SDA signal should
not change while SCL is high.
Acknowledge
The Acknowledge takes place after the 8
th data bit
has been transferred in any transaction. During this
state the transmitter should release the SDA bus to
allow the receiver to drive it. The receiver drives the
SDA signal low to acknowledge receipt of the byte.
If the receiver does not drive SDA low, the condition
is a No-Acknowledge and the operation is aborted.
The receiver could fail to acknowledge for two
distinct reasons. First, if a byte transfer fails, the No-
Acknowledge ends the current operation so that the
device can be addressed again. This allows the last
byte
to
be
recovered
in
the
event
of
a
communication error. Second and most common,
the receiver does not acknowledge the data to
deliberately end an operation. For example, during a
read operation, the FM24C64 will continue to place
data onto the bus as long as the receiver sends
acknowledges (and clocks). When a read operation
is complete and no more data is needed, the receiver
must not acknowledge the last byte. If the receiver
acknowledges the last byte, this will cause the
FM24C64 to attempt to drive the bus on the next
clock while the master is sending a new command
such as a Stop command.
Slave Address
The first byte that the FM24C64 expects after a start
condition is the slave address. As shown in Figure 4,
the slave address contains the Slave ID (device
type), the device select address bits, and a bit that
specifies if the transaction is a read or a write. Bits
7-4 define the device type and must be set to 1010b
for the FM24C64. These bits allow other types of
function types to reside on the 2-wire bus within an
identical address range. Bits 3-1 are the select bits
which are equivalent to chip select bits. They must
match the corresponding value on the external
address pins to select the device. Up to eight
FM24C64s can reside on the same two-wire bus by
assigning a different address to each. Bit 0 is the
read/write bit. A 1 indicates a read operation, and a
0 indicates a write.


同様の部品番号 - FM24C64-S

メーカー部品番号データシート部品情報
logo
Fairchild Semiconductor
FM24C64 FAIRCHILD-FM24C64 Datasheet
100Kb / 13P
   64K-Bit Standard 2-Wire Bus Interface Serial EEPROM
logo
List of Unclassifed Man...
FM24C64 ETC-FM24C64 Datasheet
320Kb / 13P
   FM24C64
logo
Ramtron International C...
FM24C64 RAMTRON-FM24C64 Datasheet
7Mb / 28P
   VersaKit-30xx Development System Overview
Rev 2.0
FM24C64B RAMTRON-FM24C64B Datasheet
293Kb / 12P
   64Kb Serial 5V F-RAM Memory
logo
Cypress Semiconductor
FM24C64B CYPRESS-FM24C64B Datasheet
347Kb / 12P
   64Kb Serial 5V F-RAM Memory
More results

同様の説明 - FM24C64-S

メーカー部品番号データシート部品情報
logo
Ramtron International C...
FM25640 RAMTRON-FM25640 Datasheet
131Kb / 14P
   64Kb FRAM Serial Memory
FM25640 RAMTRON-FM25640_05 Datasheet
187Kb / 13P
   64Kb FRAM Serial Memory
FM25640 RAMTRON-FM25640_07 Datasheet
138Kb / 13P
   64Kb FRAM Serial Memory
FM25CL64 RAMTRON-FM25CL64 Datasheet
131Kb / 13P
   64Kb FRAM Serial 3V Memory
FM24CL64 RAMTRON-FM24CL64_07 Datasheet
115Kb / 13P
   64Kb Serial 3V FRAM Memory
FM25CL64 RAMTRON-FM25CL64_07 Datasheet
137Kb / 13P
   64Kb FRAM Serial 3V Memory
logo
List of Unclassifed Man...
FM24CL64 ETC-FM24CL64 Datasheet
96Kb / 13P
   64Kb 2.7V-3.6V FRAM Serial Memory
logo
Ramtron International C...
FM1608 RAMTRON-FM1608 Datasheet
104Kb / 12P
   64Kb Bytewide FRAM Memory
FM24CL04 RAMTRON-FM24CL04_05 Datasheet
116Kb / 11P
   4Kb FRAM Serial Memory
logo
List of Unclassifed Man...
FM25C160 ETC1-FM25C160 Datasheet
154Kb / 14P
   16Kb FRAM Serial 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