công cụ tìm kiếm bảng dữ liệu linh kiện điện tử
  Vietnamese  ▼
ALLDATASHEET.VN

X  

ST24LW21B1TR bảng dữ liệu(PDF) 7 Page - STMicroelectronics

tên linh kiện ST24LW21B1TR
Giải thích chi tiết về linh kiện  1 Kbit x8 Dual Mode Serial EEPROM for VESA PLUG & PLAY
Download  22 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST24LW21B1TR bảng dữ liệu(HTML) 7 Page - STMicroelectronics

Back Button ST24LW21B1TR Datasheet HTML 3Page - STMicroelectronics ST24LW21B1TR Datasheet HTML 4Page - STMicroelectronics ST24LW21B1TR Datasheet HTML 5Page - STMicroelectronics ST24LW21B1TR Datasheet HTML 6Page - STMicroelectronics ST24LW21B1TR Datasheet HTML 7Page - STMicroelectronics ST24LW21B1TR Datasheet HTML 8Page - STMicroelectronics ST24LW21B1TR Datasheet HTML 9Page - STMicroelectronics ST24LW21B1TR Datasheet HTML 10Page - STMicroelectronics ST24LW21B1TR Datasheet HTML 11Page - STMicroelectronics Next Button
Zoom Inzoom in Zoom Outzoom out
 7 / 22 page
background image
AI01665
VCC
CBUS
SDA
RL
MASTER
RL
SCL
CBUS
100
0
4
8
12
16
20
CBUS (pF)
10
1000
fc = 400kHz
fc = 100kHz
Figure 6. Maximum RL Value versus Bus Capacitance (CBUS) for an I2C Bus
When the ST24FC21 (or the ST24FC21B or the
ST24FW21) first switches to the I2C mode (VESA
DDC2B mode), it enters a transition state which is
functionally identical to I2C operation. But, if the
ST24FC21 (or the ST24FC21B or the ST24FW21)
does not receive a valid I2C sequence, that is a
START condition followed by a valid Device Select
co de (10 10XXX RW f o r S T 2 4F C 21 an d
ST24FW21; 1010000 RW for ST24FC21B), within
either 128 VCLK periods or a period of time of
tRECOVERY (approximat ely 2 seconds), the
ST24FC21 (or the ST24FC21B or the ST24FW21)
will revert to the Transmit-Only mode (VESA DDC1
mode).
If the ST24FC21 (or the ST24FC21B or the
ST24FW21) decodes a valid I2C Device Select
code, it will lock into I2C mode. Under this condition,
signals applied on the VCLK input will not disturb
READ access from the ST24FC21 (or the
ST24FC21B or the ST24FW21). For WRITE ac-
cess, refer to the Signal Description paragraph.
When in the transition state, the count of VCLK
pulses and the internal 2 seconds timer are reset
by any activity on the SCL line. This means that,
after each high to low transition on SCL, the mem-
ory will re-initialise its transition state and will switch
back to Transmit-Only mode only after 128 more
VCLK pulses or after a new tRECOVERY delay.
SIGNAL DESCRIPTIONS
I2C Serial Clock (SCL). The SCL input pin is used
to synchronize all data in and out of the memory. A
resistor can be connected from the SCL line to VCC
to act as a pull up (see Figure 6).
Serial Data (SDA). The SDA pin is bi-directional
and is used to transfer data in or out of the memory.
It is an open drain output that may be wire-OR’ed
with other open drain or open collector signals on
the bus. A resistor must be connected from the SDA
bus line to VCC to act as pull up (see Figure 6).
Transmit Only Clock (VCLK). The VCLK input pin
is used to synchronize data out when the ST24xy21
is in Transmit Only mode.
For the ST24LC21B and the ST24FC21 or
ST24FC21B Only, the VCLK offers also a Write
Enable (active high) function when the ST24LC21B
and the ST24FC21 or ST24FC21B are in I2C bidi-
rectional mode.
Write Control (WC). An hardware Write Control
feature (WC) is offered only on ST24LW21 and
ST24FW21 on pin 3. This feature is usefull to
protect the contents of the memory from any erro-
neous erase/write cycle. The Write Control signal
is used to enable (WC = VIL) or disable (WC = VIH)
the internal write protection. When unconnected,
the WC input is internally tied to VSS by a 100k ohm
pull-down resistor and the memory is write pro-
tected.
DEVICE OPERATION
7/22
ST24LC21B, ST24LW21, ST24FC21, ST24FC21B, ST24FW21


Số phần tương tự - ST24LW21B1TR

nhà sản xuấttên linh kiệnbảng dữ liệuGiải thích chi tiết về linh kiện
logo
STMicroelectronics
ST24LC21 STMICROELECTRONICS-ST24LC21 Datasheet
149Kb / 18P
   1Kb x8 DUAL MODE SERIAL EEPROM for VESA Plug&Play
ST24LC21B1TR STMICROELECTRONICS-ST24LC21B1TR Datasheet
149Kb / 18P
   1Kb x8 DUAL MODE SERIAL EEPROM for VESA Plug&Play
ST24LC21M1TR STMICROELECTRONICS-ST24LC21M1TR Datasheet
149Kb / 18P
   1Kb x8 DUAL MODE SERIAL EEPROM for VESA Plug&Play
More results

Mô tả tương tự - ST24LW21B1TR

nhà sản xuấttên linh kiệnbảng dữ liệuGiải thích chi tiết về linh kiện
logo
STMicroelectronics
ST24LC21 STMICROELECTRONICS-ST24LC21 Datasheet
149Kb / 18P
   1Kb x8 DUAL MODE SERIAL EEPROM for VESA Plug&Play
logo
ON Semiconductor
CAT24C21WI ONSEMI-CAT24C21WI Datasheet
140Kb / 14P
   1 kb Dual Mode Serial EEPROM for VESA Plug-and-Play
September, 2009 ??Rev. 16
logo
Catalyst Semiconductor
CAT24C21 CATALYST-CAT24C21 Datasheet
66Kb / 12P
   1-kb Dual Mode Serial EEPROM for VESA??Plug-and-Play
logo
ON Semiconductor
CAT24C21 ONSEMI-CAT24C21 Datasheet
163Kb / 14P
   1 kb Dual Mode Serial EEPROM for VESA ?쏱lug-and-Play?
September, 2009 ??Rev. 16
logo
STMicroelectronics
M2201 STMICROELECTRONICS-M2201 Datasheet
111Kb / 15P
   2-Wires 1 Kbit x8 Serial EEPROM
logo
Rohm
BR34E02-3 ROHM-BR34E02-3 Datasheet
791Kb / 33P
   Serial EEPROM Series Standard EEPROM Plug & Play EEPROM
logo
STMicroelectronics
M28C16A STMICROELECTRONICS-M28C16A Datasheet
134Kb / 19P
   16 Kbit 2Kb x8 Parallel EEPROM
M28C64C STMICROELECTRONICS-M28C64C Datasheet
100Kb / 15P
   64 Kbit 8Kb x8 Parallel EEPROM
M24C08-X STMICROELECTRONICS-M24C08-X Datasheet
370Kb / 37P
   8-Kbit, 4-Kbit, 2-Kbit, and 1-Kbit serial I짼C bus EEPROM
logo
Microchip Technology
24LC22A MICROCHIP-24LC22A Datasheet
312Kb / 24P
   2K VESA E - EDID SERIAL EEPROM
2001
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22


bảng dữ liệu tải về

Go To PDF Page


Link URL




Chính sách bảo mật
ALLDATASHEET.VN
Cho đến nay ALLDATASHEET có giúp ích cho doanh nghiệp của bạn hay không?  [ DONATE ] 

Alldatasheet là   |   Quảng cáo   |   Liên lạc với chúng tôi   |   Chính sách bảo mật   |   Trao đổi link   |   Tìm kiếm theo nhà sản xuất
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