TMX320F2802748A [TI]
TMS320x28027, TMS320x28026, TMS320x28025,TMS320x28024, TMS320x28023, TMS320x28022 Piccolo MCU; TMS320x28027 ， TMS320x28026 ， TMS320x28025 ， TMS320x28024 ， TMS320x28023 ， TMS320x28022 Piccolo MCU的
| 型号： | TMX320F2802748A |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | TMS320x28027, TMS320x28026, TMS320x28025,TMS320x28024, TMS320x28023, TMS320x28022 Piccolo MCU |
| 文件： | 总10页 (文件大小：77K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TMS320x28027, TMS320x28026, TMS320x28025,
TMS320x28024, TMS320x28023, TMS320x28022
Piccolo MCU
Silicon Errata
Literature Number: SPRZ292
December 2008
2
SPRZ292–December 2008
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Contents
1
2
3
4
5
Introduction ........................................................................................................................ 5
Device and Development Tool Support Nomenclature .............................................................. 5
Device Markings .................................................................................................................. 6
Rev 0 Known Design Marginality/Exceptions to Functional Specifications.................................. 7
Documentation Support........................................................................................................ 9
SPRZ292–December 2008
Table of Contents
3
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List of Figures
1
2
Example of Device Markings............................................................................................... 6
Example of Device Nomenclature ......................................................................................... 6
List of Tables
1
2
Determining Silicon Revision From Lot Trace Code 2802x ............................................................ 6
Advisory List for Rev 0 Silicon ............................................................................................ 7
4
List of Figures
SPRZ292–December 2008
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Silicon Errata
SPRZ292–December 2008
TMS320x2802x Piccolo MCU Silicon Errata
1
2
Introduction
This document describes the silicon updates to the functional specifications for the TMS320x2802x
microcontrollers (MCUs).
The updates are applicable to:
•
•
38-pin Plastic Small Outline Package, DA Suffix
48-pin Plastic Quad Flatpack, PT Suffix
Device and Development Tool Support Nomenclature
To designate the stages in the product development cycle, TI assigns prefixes to the part numbers of all
[TMS320] DSP devices and support tools. Each TMS320™ DSP commercial family member has one of
three prefixes: TMX, TMP, or TMS (e.g., TMS320F28027). Texas Instruments recommends two of three
possible prefix designators for its support tools: TMDX and TMDS. These prefixes represent evolutionary
stages of product development from engineering prototypes (TMX/TMDX) through fully qualified
production devices/tools (TMS/TMDS).
TMX
TMP
TMS
Experimental device that is not necessarily representative of the final device's electrical
specifications
Final silicon die that conforms to the device's electrical specifications but has not
completed quality and reliability verification
Fully qualified production device
Support tool development evolutionary flow:
TMDX Development-support product that has not yet completed Texas Instruments internal
qualification testing
TMDS Fully qualified development-support product
TMX and TMP devices and TMDX development-support tools are shipped against the following
disclaimer:
"Developmental product is intended for internal evaluation purposes."
TMS devices and TMDS development-support tools have been characterized fully, and the quality and
reliability of the device have been demonstrated fully. TI's standard warranty applies.
Predictions show that prototype devices (TMX or TMP) have a greater failure rate than the standard
production devices. Texas Instruments recommends that these devices not be used in any production
system because their expected end-use failure rate still is undefined. Only qualified production devices are
to be used.
TI device nomenclature also includes a suffix with the device family name. This suffix indicates the
package type (for example, PBK) and temperature range (for example, A).
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TMS320x2802x Piccolo MCU Silicon Errata
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Device Markings
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3
Device Markings
Figure 1 provides an example of the 2802x device markings and defines each of the markings. The device
revision can be determined by the symbols marked on the top of the package as shown in Figure 1. Some
prototype devices may have markings different from those illustrated. Figure 2 shows an example of the
device nomenclature.
Figure 1. Example of Device Markings
TMS 320
F
28025
PT
A
PREFIX
TEMPERATURERANGE
A = −40°C to 85°C
S = −40°C to 125°C
experimental device
prototype device
qualified device
TMX =
TMP =
TMS =
PACKAGE TYPE
48-Pin PT Plastic Quad Flatpack
38-Pin DA Plastic Small-outline Package
DEVICE FAMILY
320 = TMS320 MCU Family
DEVICE
28027
28026
28025
28024
28023
28022
TECHNOLOGY
F = Flash
Figure 2. Example of Device Nomenclature
Table 1. Determining Silicon Revision From Lot Trace Code 2802x
SECOND LETTER
IN PREFIX OF
LOT TRACE CODE
REVISION ID
(0x0883)
SILICON REVISION
COMMENTS
Blank (no second letter in
prefix)
Indicates Revision 0
0x0000
This silicon revision is available as TMX.
6
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Rev 0 Known Design Marginality/Exceptions to Functional Specifications
4
Rev 0 Known Design Marginality/Exceptions to Functional Specifications
Table 2. Advisory List for Rev 0 Silicon
Title ...................................................................................................................................... Page
Advisory ADC: Initial Conversion....................................................................................................... 8
Advisory Memory: Prefetching Beyond Valid Memory .............................................................................. 8
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Advisory — ADC: Initial Conversion
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Advisory
ADC: Initial Conversion
Revision(s) Affected
Details
0
When the ADC conversions are initiated by any source of trigger, the first sample may
not be the correct conversion result.
Workaround(s)
Discard the first sample at the beginning of every series of conversions. For instance, if
the application calls for a given series of conversions, SOC0→SOC1→SOC2, to initiate
periodically, then setup the series instead as SOC0→SOC1→SOC2→SOC3 and only
use the last three conversions, ADCRESULT1, ADCRESULT2, ADCRESULT3, thereby
discarding ADCRESULT0.
Each application should validate this as acceptable in their application.
Advisory
Memory: Prefetching Beyond Valid Memory
Revision(s) Affected
Details
0
The C28x CPU prefetches instructions beyond those currently active in its pipeline. If the
prefetch occurs past the end of valid memory, then the CPU may receive an invalid
opcode.
Workaround
The prefetch queue is 8x16 words in depth. Therefore, code should not come within 8
words of the end of valid memory. This restriction applies to all memory regions and all
memory types (flash, OTP, SARAM) on the device. Prefetching across the boundary
between two valid memory blocks is ok.
Example 1: M1 ends at address 0x7FF and is not followed by another memory block.
Code in M1 should be stored no farther than address 0x7F7. Addresses 0x7F8-0x7FF
should not be used for code.
Example 2: M0 ends at address 0x3FF and valid memory (M1) follows it. Code in M0
can be stored up to and including address 0x3FF. Code can also cross into M1 up to
and including address 0x7F7.
8
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Documentation Support
5
Documentation Support
For device-specific data sheets and related documentation, visit the TI web site at: http://www.ti.com.
To access documentation on the web site:
1. Go to http://www.ti.com
2. Click on Microcontrollers (MCU)
3. Under the heading C2000™ High Performance 32-bit Controllers, click on the appropriate device
family.
4. Click on a device name and then click on the documentation type you prefer.
For further information regarding the Piccolo devices, see
theTMS320x28027/28026/28025/28024/28023/28022 Piccolo MCU Data Manual (literature number
SPRS523).
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相关型号：
TMX320F2802748S
TMS320x28027, TMS320x28026, TMS320x28025,TMS320x28024, TMS320x28023, TMS320x28022 Piccolo MCU
TI
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