Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.NET

X  

Preview PDF Download HTML

LM12454 Datasheet(PDF) 24 Page - Texas Instruments

Part No. LM12454
Description  LM12454/LM12458/LM12H458 12-Bit Sign Data Acquisition System with Self-Calibration
Download  45 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LM12454 Datasheet(HTML) 24 Page - Texas Instruments

Back Button LM12454_14 Datasheet HTML 20Page - Texas Instruments LM12454_14 Datasheet HTML 21Page - Texas Instruments LM12454_14 Datasheet HTML 22Page - Texas Instruments LM12454_14 Datasheet HTML 23Page - Texas Instruments LM12454_14 Datasheet HTML 24Page - Texas Instruments LM12454_14 Datasheet HTML 25Page - Texas Instruments LM12454_14 Datasheet HTML 26Page - Texas Instruments LM12454_14 Datasheet HTML 27Page - Texas Instruments LM12454_14 Datasheet HTML 28Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 24 / 45 page
background image
LM12454, LM12458, LM12H458
SNAS079A – MAY 2004 – REVISED FEBRUARY 2006
www.ti.com
19: Address invalid from RD or WR high (hold time)
20: CS low or address valid to RD low
21: CS low or address valid to WR low
VA+ = VD+ = +5V, tR = tF = 3 ns, CL = 100 pF for the INT, DMARQ, D0–D15 outputs.
Figure 13. Interrupt and DMARQ
22: INT high from RD low
23: DMARQ low from RD low
Pin Functions
Pin Descriptions
Analog and digital supply voltage pins. The LM12(H)454/8's supply voltage operating range
is +3.0V to +5.5V. Accuracy is guaranteed only if VA+ and VD+ are connected to the same
VA+ VD+
power supply. Each pin should have a parallel combination of 10 µF (electrolytic or tantalum)
and 0.1 µF (ceramic) bypass capacitors connected between it and ground.
The internal data input/output TRI-STATE buffers are connected to these pins. These buffers
are designed to drive capacitive loads of 100 pF or less. External buffers are necessary for
driving higher load capacitances. These pins allows the user a means of instruction input and
D0–D15
data output. With a logic high applied to the BW pin, data lines D8–D15 are placed in a high
impedance state and data lines D0–D7 are used for instruction input and data output when
the LM12(H)454/8 is connected to an 8-bit wide data bus. A logic low on the BW pin allows
the LM12(H)454/8 to exchange information over a 16-bit wide data bus.
Input for the active low READ bus control signal. The data input/output TRI-STATE buffers,
RD
as selected by the logic signal applied to the BW pin, are enabled when RD and CS are both
low. This allows the LM12(H)454/8 to transmit information onto the data bus.
Input for the active low WRITE bus control signal. The data input/output TRI-STATE buffers,
WR
as selected by the logic signal applied to the BW pin, are enabled when WR and CS are
both low. This allows the LM12(H)454/8 to receive information from the data bus.
Input for the active low Chip Select control signal. A logic low should be applied to this pin
only during a READ or WRITE access to the LM12(H)454/8. The internal clocking is halted
CS
and conversion stops while Chip Select is low. Conversion resumes when the Chip Select
input signal returns high.
Address Latch Enable input. It is used in systems containing a multiplexed data bus. When
ALE is asserted high, the LM12(H)454/8 accepts information on the data bus as a valid
address. A high-to-low transition will latch the address data on A0–A4 while the CS is low.
ALE
Any changes on A0–A4 and CS while ALE is low will not affect the LM12(H)454/8. See
Figure 11. When a non-multiplexed bus is used, ALE is continuously asserted high. See
Figure 12.
External clock input pin. The LM12(H)454/8 operates with an input clock frequency in the
CLK
range of 0.05 MHz to 10.0 MHz.
The LM12(H)454/8's address lines. They are used to access all internal registers,
A0–A4
Conversion FIFO, and Instruction RAM.
24
Submit Documentation Feedback
Copyright © 2004–2006, Texas Instruments Incorporated
Product Folder Links: LM12454 LM12458 LM12H458


Similar Part No. - LM12454_14

ManufacturerPart No.DatasheetDescription
National Semiconductor (TI)
National Semiconductor ...
LM12454CIV NSC-LM12454CIV Datasheet
991Kb / 43P
   12-Bit Sign Data Acquisition System with Self-Calibration
LM12454CIV NSC-LM12454CIV Datasheet
1Mb / 36P
   12-Bit Sign Data Acquisition System with Self-Calibration
LM12454 NSC-LM12454_06 Datasheet
1Mb / 36P
   12-Bit Sign Data Acquisition System with Self-Calibration
More results

Similar Description - LM12454_14

ManufacturerPart No.DatasheetDescription
National Semiconductor (TI)
National Semiconductor ...
LM12454 NSC-LM12454 Datasheet
991Kb / 43P
   12-Bit Sign Data Acquisition System with Self-Calibration
LM12454 NSC-LM12454_06 Datasheet
1Mb / 36P
   12-Bit Sign Data Acquisition System with Self-Calibration
Texas Instruments
Texas Instruments
LM12L458 TI1-LM12L458_16 Datasheet
803Kb / 38P
[Old version datasheet]   12-Bit Sign Data Acquisition System with Self-Calibration
National Semiconductor (TI)
National Semiconductor ...
LM12L458 NSC-LM12L458 Datasheet
695Kb / 36P
   12-Bit Sign Data Acquisition System with Self-Calibration
LM12L458 NSC-LM12L458_06 Datasheet
884Kb / 29P
   12-Bit Sign Data Acquisition System with Self-Calibration
Texas Instruments
Texas Instruments
LM12454 TI1-LM12454 Datasheet
1Mb / 43P
[Old version datasheet]   12-Bit Sign Data Acquisition System
National Semiconductor (TI)
National Semiconductor ...
LM12434 NSC-LM12434 Datasheet
1Mb / 80P
   Sign Data Acquisition System with Serial I/O and Self-Calibration
Micro Linear Corporation
Micro Linear Corporatio...
ML2200 MICRO-LINEAR-ML2200 Datasheet
1Mb / 28P
   12-Bit Plus Sign Data Acquisition Peripheral
Sipex Corporation
Sipex Corporation
SP8121 SIPEX-SP8121 Datasheet
168Kb / 13P
   Monolithic, 12-Bit Data Acquisition System
SP8481 SIPEX-SP8481 Datasheet
208Kb / 12P
   Monolithic, 12-Bit Data Acquisition System
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  23  24  25  26  27  28  29  30  31  32  33  34  35  36  37  38  39  40  41  42  43  44  45 


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.NET
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   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