The Intel
product to deviate from published specifications. Current characterized errata are documented in this
Specification Update.
®
Celeron® processor may contain design defects or errors known as errata, which may cause the
®
INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL
EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED
BY THIS DOCUMENT. EXCEPT AS PROVIDED IN INTEL’S TERMS AND CONDITIONS OF SALE FOR SUCH
PRODUCTS, INTEL ASSUMES NO LIABILITY WHATSOEVER, AND INTEL DISCLAIMS ANY EXPRESS OR IMPLIED
WARRANTY, RELATING TO SALE AND/OR USE OF INTEL PRODUCTS INCLUDING LIABILITY OR WARRANTIES
RELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT,
COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. Intel products are not intended for use in medical, life
saving, or life sustaining applications.
Intel may make changes to specifications and product descriptions at any time, without notice.
Designers must not rely on the absence or characteristics of any features or instructions marked “reserved” or “undefined.”
Intel reserves these for future definition and shall have no responsibility whatsoever for conflicts or incompatibilities arising
from future changes to them.
The Mobile Intel® Celeron® Processor may contain design defects or errors known as errata which may cause the product
to deviate from published specifications. Current characterized errata are available on request.
Contact your local Intel sales office or your distributor to obtain the latest specifications and before placing your product
order.
Intel, Pentium, Celeron, Intel Xeon and the Intel logo are trademarks or registered trademarks or registered trademarks of
Intel Corporation or its subsidiaries in the United States and other countries*Other names and brands may be claimed as the
property of others.
REVISION HISTORY....................................................................................................................................... ii
PREFACE ....................................................................................................................................................... vi
®
Specification Update for the Intel
Celeron
GENERAL INFORMATION.............................................................................................................................. 1
Intel® Celeron® Processor and Boxed Intel® Celeron
Intel® Celeron® Processor and Boxed Intel® Celeron
Intel® Celeron® Processor and Boxed Intel® Celeron
IDENTIFICATION INFORMATION .................................................................................................................. 4
SUMMARY OF CHANGES............................................................................................................................ 11
Summary of Errata ..................................................................................................................................... 12
Summary of Documentation Changes .......................................................................................................21
Summary of Specification Clarifications..................................................................................................... 23
Summary of Specification Changes ........................................................................................................... 24
to maintain consistency with other product Specification Updates.
Updated Errata 6 and 38. Added Errata 56 through 59. Updated
Specification Clarification 5.
February 2000 -022 Added Documentation Change C6. Updated Summary of Changes
March 2000 -023 Updated Erratum C47. Updated the CPUID/Stepping information in
May 2000 -024 Updated the Intel® Celeron® Processor Identification Information
June 2000 -025
July 2000 -026
August 2000 -027 Updated Processor Identification Information table. Added Erratum
September 2000 -028 Updated the Intel® Celeron® Processor Identification Information
October 2000 -029 Added Erratum C74. Added Documentation Changes C9 and C10
November 2000 -030 Updated the Intel® Celeron® Processor Identification Information
December 2000 -031 Updated Specification Update product key to include the Intel®
January 2001 -032 Updated the Intel® Celeron® Processor Identification Information
February 2001 -033 Updated Documentation change C17. Added Documentation change
March 2001 -034 Updated Summary of Errata, Summary of Documentation Changes,
Updated Codes Used in Summary Table. Updated column heading
in Errata, Documentation Changes, Specification Clarifications and
Specification Changes tables.
Processor Identification Information Table. Added Errata C46.
Added Errata C47 and C48. Added Documentation Change C3.
Specification Clarification C4.
Added Errata C50 and C51. Added Documentation Change C5.
product letter codes.
the Summary of Changes section.
table. Added Errata C52 – C69. Updated the Summary of Errata,
Summary of Documentation Changes, Summary of Specification
Clarifications and Summary of Changes tables. Added Specification
Change C2.
Added Specification Change C3.
Added Errata C70 and C71.
C72.
table. Added Erratum C73. Updated Errata C33 ,C47 and C51.
Added Documentation changes C7 and C8.
Celeron processor details. Updated Processor Identification
Information Table. Updated Summary of Errata Table. Updated
Summary of Documentation Changes Table. Updated Summary of
Specification Clarifications Table. Updated Summary of
Specifications Changes Table. Added Errata C81 and C82.
Processor Identification Information Table.
Updated Processor Identification Information table.
Processor Identification Information Table.
Added/updated CPUID 0x6B4 processor.
Summary of Errata Table. Added Documentation Changes C3 – C24.
C95, C96, C97 C98, C99, C100, C101, C102, C103, C104, C105,
C106, C107, C108, C109. Update Summary Table of Changes.
Updated the names and document numbers of the Software
Developers Manual. Updated Processor Identification Table.
May 2007 -050 Updated Summary Table of Changes.
iv
INTEL® CELERON® PROCESSOR SPECIFICATION UPDATE
REVISION HISTORY
Date of Revision Version Description
August 2007 -051 Updated Summary Table of Changes. Added Erratum C111.
v
INTEL® CELERON® PROCESSOR SPECIFICATION UPDATE
PREFACE
This document is an update to the specifications contained in the following documents:
®
• Pentium
• P6 Family of Processors Hardware Developer’s Manual (Order Number 244001)
• Intel
• Intel® 64 and Intel IA-32 Architectures Software Developer’s Manual, Volumes 1, 2-A, 2-B, 3-A and 3-B
(Document numbers 253665, 253666, 253667, 253668, and 253669, respectively.)
It is intended for hardware system manufacturers and software developers of applications, operating systems,
or tools. It contains S-Specs, Errata, Documentation Changes, Specification Clarifications and, Specification
Changes.
II Processor Developer’s Manual (Order Number 243502)
®
Celeron® ProcessorDatasheet (Document Number 243658)
Nomenclature
S-Spec Number is a five-digit code used to identify products. Products are differentiated by their unique
characteristics, e.g., core speed, L2 cache size, package type, etc. as described in the processor identification
information table. Care should be taken to read all notes associated with each S-Spec number.
Errata are design defects or errors. Errata may cause the Celeron processor’s behavior to deviate from
published specifications. Hardware and software designed to be used with any given processor must assume
that all errata documented for that processor are present on all devices unless otherwise noted.
Documentation Changes include typos, errors, or omissions from the current published specifications. These
changes will be incorporated in the next release of the specifications.
Specification Clarifications describe a specification in greater detail or further highlight a specification’s
impact to a complex design situation. These clarifications will be incorporated in the next release of the
specifications.
Specification Changes are modifications to the current published specifications for the Celeron processor.
These changes will be incorporated in the next release of the specifications.
vi
Specification Update for the Intel® Celeron® Processor
GRP1LN1: INTEL (m)(c) '01_-_{Country of Origin}
GRP1LN2: {Core freq}/{Cache}/{Bus Freq}/{Voltage}
GRP2LN1: {FPO}-{S/N}
GRP2LN2: CELERON {S-Spec}
3
INTEL® CELERON® PROCESSOR SPECIFICATION UPDATE
IDENTIFICATION INFORMATION
Complete identification information of the Celeron processor can be found in the Intel Processor Identification
and the CPUID Instruction
The Celeron processor can be identified by the following values:
Family1 Model2 Brand ID3
0110 0101 00h = Not Supported
0110 0110 00h = Not Supported
0110 1000 01h = “Intel® Celeron® Processor”
0110 10114 03h = “Intel® Celeron® Processor”
NOTES:
1. The Family corresponds to bits [11:8] of the EDX register after RESET, bits [11:8] of the EAX register after the CPUID
instruction is executed with a 1 in the EAX register, and the generation field of the Device ID register accessible
through Boundary Scan.
2. The Model corresponds to bits [7:4] of the EDX register after RESET, bits [7:4] of the EAX register after the CPUID
instruction is executed with a 1 in the EAX register, and the model field of the Device ID register accessible through
Boundary Scan.
3. The Brand ID corresponds to bits [7:0] of the EBX register after the CPUID instruction is executed with a 1 in the EAX
register.
4. This only applies to units with processor signature of 0x6B1.
The Celeron processor’s second level (L2) cache size can be determined by the following register contents:
0-Kbyte Unified L2 Cache1 40h
128-Kbyte Unified L2 Cache1 41h
256-Kbyte 8 way set associative 32byte line
NOTE:
1. When the EAX register contains a value of 2, the CPUID instruction loads the EAX, EBX, ECX and EDX registers with
descriptors that indicate the processors cache and TLB characteristics. The lower 8 bits of the EAX register (AL) contain
a value that identifies the number of times the CPUID has to be executed to obtain a complete image of the processor’s
caching systems. The remainder of the EAX register, the EBX, ECX and EDX registers contain the cache and TLB
descriptors. When bit 31 in a given register is zero, that register contains valid 8-bit descriptors. To decode descriptors,
move sequentially from the most significant byte of the register down through the least significant byte of the register.
Assuming bit 31 is 0, then that register contains valid cache or TLB descriptors in bits 24 through 31, bits 16 through 23,
bits 8 through 15 and bits 0 through 7. Software must compare the value contained in each of the descriptor bit fields
according to the definition of the CPUID instruction . For more details refer to the AP-485 Intel Processor Identification and the CPUID Instruction Application Note.
application note (Document Number 241618).
1
size, L2 Cache
82h
4
®
INTEL
S-Spec
Core
Stepping
Intel® Celeron® Processor Identification Information
L2 Cache
Size
(Kbytes)
CELERON® PROCESSOR SPECIFICATION UPDATE
Package
and
Revision
Notes
CPUID
Speed (MHz)
Core/Bus
SL2SY A0 0 0650h 266/66 SEPP Rev. 1
SL2YN A0 0 0650h 266/66 SEPP Rev. 1 1
SL2YP A0 0 0650h 300/66 SEPP Rev. 1
SL2Z7 A0 0 0650h 300/66 SEPP Rev. 1 1
SL2TR A1 0 0651h 266/66 SEPP Rev. 1
SL2QG A1 0 0651h 266/66 SEPP Rev. 1 1
SL2X8 A1 0 0651h 300/66 SEPP Rev. 1
SL2Y2 A1 0 0651h 300/66 SEPP Rev. 1 1
SL2Y3 B0 0 0652h 266/66
SL2Y4 B0 0 0652h 300/66
SL2WM A0 128 0660h 300A/66
SL32A A0 128 0660h 300A/66
SL2WN A0 128 0660h 333/66
SL32B A0 128 0660h 333/66
SEPP Rev. 1
SEPP Rev. 1
SEPP Rev. 1
SEPP Rev. 1
SEPP Rev. 1
SEPP Rev. 1
1
1
3
1
3
1
SL376 A0 128 0660h 366/66 SEPP Rev. 1
SL37Q A0 128 0660h 366/66 SEPP Rev. 1 1
SL39Z A0 128 0660h 400/66 SEPP Rev. 1
SL37V A0 128 0660h 400/66 SEPP Rev. 1 1
SL3BC A0 128 0660h 433/66 SEPP Rev. 1
SL39Z A0 128 0660h 400/66
SL37V A0 128 0660h 400/66
SL3BC A0 128 0660h 433/66
SL35Q B0 128 0665h 300A/66
PPGA
PPGA
PPGA
PPGA
SL35Q B0 128 0665h 300A/66 PPGA 2
SL36A B0 128 0665h 300A/66
PPGA
18
SL35R B0 128 0665h 333/66 PPGA 2
SL36B B0 128 0665h 333/66 PPGA
SL36C B0 128 0665h 366/66 PPGA
SL35S B0 128 0665h 366/66 PPGA 2
5
INTEL® CELERON® PROCESSOR SPECIFICATION UPDATE
Intel® Celeron® Processor Identification Information
S-Spec
Core
Stepping
L2 Cache
Size
(Kbytes)
CPUID
Speed (MHz)
Core/Bus
Package
and
Revision
Notes
SL3A2 B0 128 0665h 400/66 PPGA
SL37X B0 128 0665h 400/66 PPGA 2
SL3BA B0 128 0665h 433/66 PPGA
SL3BS B0 128 0665h 433/66 PPGA 2
SL3EH B0 128 0665h 466/66 PPGA
SL3FL B0 128 0665h 466/66 PPGA 2
SL3FY B0 128 0665h 500/66 PPGA
SL3LQ B0 128 0665h 500/66 PPGA 2
SL3FZ B0 128 0665h 533/66 PPGA
SL3PZ B0 128 0665h 533/66 PPGA 2
SL46S B0 128 0683h 533A/66 FC-PGA
SL3W6 B0 128 0683h 533A/66 FC-PGA 2
SL46T B0 128 0683h 566/66 FC-PGA
SL3W7 B0 128 0683h 566/66 FC-PGA 2
SL4PC C0 128 0686h 566/66 FC-PGA 2, 7, 5
SL4NW
SL5L5
C0 128 0686h 566/66 FC-PGA 2, 7, 5
D0 128 068Ah 566/66 FC-PGA 7, 8
SL46U B0 128 0683h 600/66 FC-PGA
SL3W8 B0 128 0683h 600/66 FC-PGA 2
SL4PB
SL4NX
C0 128 0686h 600/66 FC-PGA 2, 7, 5
C0 128 0686h 600/66 FC-PGA 2, 7, 5
SL3VS B0 128 0683h 633/66 FC-PGA
SL3W9 B0 128 0683h 633/66 FC-PGA 2
SL4PA C0 128 0686h 633/66 FC-PGA 2, 6, 5
SL4NY C0 128 0686h 633/66 FC-PGA 2, 6, 5
SL48E B0 128 0683h 667/66 FC-PGA
SL4AB B0 128 0683h 667/66 FC-PGA 2
SL4P9 C0 128 0686h 667/66 FC-PGA 2, 6, 5
SL4NZ C0 128 0686h 667/66 FC-PGA 2, 6, 5
6
®
INTEL
CELERON® PROCESSOR SPECIFICATION UPDATE
Intel® Celeron® Processor Identification Information
S-Spec
Core
Stepping
L2 Cache
Size
(Kbytes)
CPUID
Speed (MHz)
Core/Bus
Package
and
Revision
Notes
SL48F B0 128 0683h 700/66 FC-PGA
SL4EG B0 128 0683h 700/66 FC-PGA 2
SL4P8 C0 128 0686h 700/66 FC-PGA 2, 4, 5
SL4P2 C0 128 0686h 700/66 FC-PGA 2, 4, 5
SL4P7 C0 128 0686h 733/66 FC-PGA 4, 5
SL4P3 C0 128 0686h 733/66 FC-PGA 2, 4, 5
SL52Y D0 128 068Ah 733/66 FC-PGA 4, 8
SL5E9 D0 128 068Ah 733/66 FC-PGA 2, 4, 8
SL4P6 C0 128 0686h 766/66 FC-PGA 4, 5
SL4QF C0 128 0686h 766/66 FC-PGA 2, 4, 5
SL52X D0 128 068Ah 766/66 FC-PGA 4, 8
SL5EA D0 128 068Ah 766/66 FC-PGA 2, 4, 8
SL4TF C0 128 0686h 800/100 FC-PGA 4, 5
SL45R C0 128 0686h 800/100 FC-PGA 2, 4, 5
SL54P D0 128 068Ah 800/100 FC-PGA 4, 8
SL5WC D0 128 068Ah 800/100 FC-PGA 4, 8
SL5EB D0 128 068Ah 800/100 FC-PGA 2, 4, 8
SL5WW D0 128 068Ah 800/100 FC-PGA 2, 4, 8
SL5GA C0 128 0686h 850/100 FC-PGA 4, 5
SL5GB C0 128 0686h 850/100 FC-PGA 2, 4, 5
SL54Q D0 128 068Ah 850/100 FC-PGA 4, 8
SL5EC D0 128 068Ah 850/100 FC-PGA 2, 4, 8
SL5LX D0 128 068Ah 900/100 FC-PGA 8, 9
SL5WA D0 128 068Ah 900/100 FC-PGA 8, 9
SL5MQ D0 128
SL5WY D0 128
SL633 D0 128 068Ah 900/100 FC-PGA2
SL5UZ D0 128 068Ah 950/100 FC-PGA
068Ah 900/100 FC-PGA 2, 8, 9
068Ah 900/100 FC-PGA 2, 8, 9
2,8,14
8, 10
SL5V2 D0 128 068Ah 950/100 FC-PGA 2, 8, 10
7
INTEL® CELERON® PROCESSOR SPECIFICATION UPDATE
Intel® Celeron® Processor Identification Information
S-Spec
Core
Stepping
L2 Cache
Size
(Kbytes)
CPUID
Speed (MHz)
Core/Bus
Package
and
Revision
SL634 D0 128 068Ah 950/100 FC-PGA2
Notes
2,8,14
8
®
INTEL
S-Spec
Core
Stepping
Intel® Celeron® Processor Identification Information
L2 Cache
Size
(Kbytes)
CELERON® PROCESSOR SPECIFICATION UPDATE
Package
and
Revision
CPUID
Speed (MHz)
Core/Bus
SL5XT D0 128 068Ah 1 GHz/100 FC-PGA
SL5XQ D0 128 068Ah 1 GHz/100 FC-PGA 2, 8,11
SL5XU D0 128 068Ah 1.10
FC-PGA
GHz/100
SL5XR D0 128 068Ah 1.10
FC-PGA 2, 8,9
GHz/100
SL5VQ A1 256 06B1h 1.10A
FC-PGA2
GHz/100
SL5ZE A1 256 06B1h 1.10A
FC-PGA2
GHz/100
SL6CA B1 256 06B4h 1.10A
FC-PGA2 13, 15
GHz/100
SL6JR B1 256 06B4h 1.10A
FC-PGA2
GHz/100
SL5XS A1 256 06B1h 1.20
FC-PGA2
GHz/100
SL5Y5 A1 256 06B1h 1.20
FC-PGA2
GHz/100
SL656 A1 256 06B1h 1.20
FC-PGA2
GHz/100
SL68P A1 256 06B1h 1.20
FC-PGA2
GHz/100
SL6C8 B1 256 06B4h 1.20
FC-PGA2
GHz/100
SL6JS B1 256 06B4h 1.20
FC-PGA2
GHz/100
SL5VR A1 256 06B1h 1.30
FC-PGA2
GHz/100
SL5ZJ A1 256 06B1h 1.30
FC-PGA2
GHz/100
SL6C7 B1 256 06B4h 1.30
FC-PGA2
GHz/100
SL6JT B1 256 06B4h 1.30
FC-PGA2
GHz/100
SL64V A1 256 06B1h 1.40
FC-PGA2
GHz/100
SL68G A1 256 06B1h 1.40
FC-PGA2 2,14,15
GHz/100
Notes
8,11
8, 9
2,12,13
2,12,13
2,13, 15
12,13
2,12,13
15,17
2, 15, 17
15, 17
2,15, 17
15,16
2,15,16
15, 16
2,15, 16
14,15
9
INTEL® CELERON® PROCESSOR SPECIFICATION UPDATE
Intel® Celeron® Processor Identification Information
L2 Cache
S-Spec
Core
Stepping
Size
(Kbytes)
CPUID
Speed (MHz)
Core/Bus
SL6C6 B1 256 06B4h 1.40
GHz/100
SL6JU B1 256 06B4h 1.40
GHz/100
SL6C5 B1 256 06B4h 1.50
GHz/100
SL6JV B1 256 06B4h 1.50
GHz/100
NOTES:
1. This is a boxed Celeron processor with an attached fan heatsink.
2. This is a boxed Celeron processor with an unattached fan heatsink.
3. This part also ships as a boxed Celeron processor with an attached fan heatsink.
4.
This part requires Tj of 80° C.
5. This part uses a V
6. This part will require Tj of 82C.
7. This part will require Tj of 90C.
8. This part uses a V
9.
This part has max Tj of 77° C.
10.
This part has max Tj of 79° C.
11.
This part has max Tj of 75° C.
12. This part uses a V
13. This part has max Tcase of 69 Deg C
14. This part has max Tcase of 72 Deg C
15. This part uses a V
16. This part has max Tcase of 71 Deg C
17. This part has max Tcase of 70 Deg C
18. This part has min Tcase of 5 deg C, max Tcase of 85 deg C and TDP of 17.8 W,
19. This part uses a V
CC
CORE
CC
CORE
CC
CORE
CC
CORE
CC
CORE
of 1.7 V.
of 1.75 V.
of 1.475 V.
of 1.5 V.
of 1.5V.
Package
and
Revision
FC-PGA2
FC-PGA2
Notes
14, 15
2,14, 15
FC-PGA2 1,3, 19
FC-PGA2 1,3, 19
10
®
INTEL
CELERON® PROCESSOR SPECIFICATION UPDATE
SUMMARY OF CHANGES
The following table indicates the Errata, Documentation Changes, Specification Clarifications, or Specification Changes that
apply to Celeron processors. Intel intends to fix some of the errata in a future stepping of the component, and to account for
the other outstanding issues through documentation or specification changes as noted. This table uses the following
notations:
X:
Change applies to the given processor stepping.
(No mark) or (blank box): This item is fixed in or does not apply to the given stepping.
Doc: Document change or update that will be implemented.
PlanFix: This erratum may be fixed in a future stepping of the product.
Fixed: This erratum has been previously fixed.
NoFix: There are no plans to fix this erratum.
Doc: Intel intends to update the appropriate documentation in a future revision.
AP: APIC related erratum.
PKG: This column refers to errata on the Intel® Celeron® processor substrate.
Shaded: This item is either new or modified from the previous version of the document.
Each Specification Update item is prefixed with a capital letter to distinguish the product. The key below
Specification Change, Erratum, Specification Clarification, or Documentation
details the letters that are used in Intel’s microprocessor Specification Updates:
A = Dual-Core Intel
®
C = Intel
D = Dual-Core Intel
E = Intel
F = Intel
Celeron® processor
®
Pentium® III processor
®
Pentium® processor Extreme Edition and Intel® Pentium® D processor
I = Dual-Core Intel
J = 64-bit Intel
K = Mobile Intel
®
L = Intel
M = Mobile Intel
N = Intel
O = Intel
P = Intel
Celeron® D processor
®
Pentium® 4 processor
®
Xeon® processor MP
®
Xeon® processor
Q = Mobile Intel
technology
®
R = Intel
Pentium® 4 processor on 90 nm process
S = 64-bit Intel
T = Mobile Intel
U = 64-bit Intel
V = Mobile Intel
®
W= Intel
X = Intel
Y = Intel
Z = Mobile Intel
AA = Intel
AB = Intel
Celeron® M processor
®
Pentium® M processor on 90 nm process with 2 MB L2 Cache
®
Pentium® M processor
®
Pentium® D Processor 900 Sequence and Intel® Pentium® Processor Extreme Edition 955, 965
®
Pentium® 4 Processor 6x1 Sequence
®
Xeon® processor 7000 sequence
®
Xeon® Processor 2.80 GHz
®
Xeon® Processor
®
Xeon® processor MP with 1 MB L2 Cache
®
Pentium® III processor
®
Celeron® processor
®
Pentium® 4 processor supporting Hyper-Threading Technology on 90 nm process
®
Xeon® processor with 800 MHz system bus (1 MB and 2 MB L2 cache versions)
®
Pentium® 4 processor-M
®
Xeon® processor MP with up to 8 MB L3 Cache
®
Celeron® processor on .13 Micron Process in Micro-FCPGA Package
®
Pentium® 4 processor with 533 MHz system bus
11
INTEL® CELERON® PROCESSOR SPECIFICATION UPDATE
®
AC = Intel
AD = Intel
AE = Intel
AF = Dual-Core Intel
AG = Dual-Core Intel
Celeron® Processor in 478 Pin Package
®
Celeron® D processor on 65 nm process
®
Core™ Duo Processor and Intel® Core™ Solo processor on 65 nm process
®
Xeon® processor LV
®
Xeon® Processor 5100 Series
AH = Intel® Core™2 Duo/Solo Processor for Intel® Centrino® Duo Processor
Technology
AI = Intel
AJ = Quad-Core Intel
AK = Intel
AL = Dual-Core Intel
AN = Intel
AO = Quad-Core Intel
AP = Dual-Core Intel
AQ = Intel
®
Core™2 Extreme Processor X6800Δ and Intel® Core™2 Duo Desktop Processor E6000Δ and
AR = Intel® Celeron processor 500 series
AS = Intel® Xeon® processor 7200, 7300 series
Summary of Errata
NO. CPUID/Stepping Plans ERRATA
650h
651h
660h
665h
683h
686h
68Ah
6B1h
6B4h
A0
A1
A0
B0
B0
C0
D0
A1
C1 X X X X X X X X X NoFix
B1
FP Data Operand Pointer
may be incorrectly calculated
after FP access which wraps
64-Kbyte boundary in 16-bit
code
C2 X X X X X X X X X NoFix Differences exist in debug
exception reporting
C3 X X X X X X X X X NoFix Code fetch matching
disabled debug register may
cause debug exception
C4 X X X X X X X X X NoFix FP inexact-result exception
flag may not be set
C5 X X X X X X X X X NoFix BTM for SMI will contain
incorrect FROM EIP
C6 X X X X X X X X X NoFix I/O restart in SMM may fail
after simultaneous MCE
C7 X X X X X X X X X NoFix Branch traps do not function
if BTMs are also enabled
C8 X X X X X X X X X NoFix Machine check exception
handler may not always
execute successfully
C9 X X X X X X X X X NoFix LBER may be corrupted after
some events
C10 X X X X X X X X X NoFix BTMs may be corrupted
during simultaneous L1
12
®
INTEL
CELERON® PROCESSOR SPECIFICATION UPDATE
Summary of Errata
686h
68Ah
6B1h
6B4h
C0
D0
A1
B1
A0
651h
A1
660h
A0
665h
B0
683h
B0
NO. CPUID/Stepping Plans ERRATA
650h
cache line replacement
C11 X X X X Fixed Potential early deassertion of
LOCK# during split-lock
cycles
C12 X X X X Fixed A20M# may be inverted after
returning from and Reset
SMM
C13 X X Fixed Reporting of floating-point
exception may be delayed
C14 X X X X X X X X X NoFix Near CALL to ESP creates
unexpected EIP address
C15 X X Fixed Built-in self test always gives
nonzero result
C16 X X X X Fixed THERMTRIP# may not be
asserted as specified
C17 X Fixed Cache state corruption in the
presence of page A/D-bit
setting and snoop traffic
C18 X Fixed Snoop cycle generates
spurious machine check
exception
C19 X X Fixed MOVD/MOVQ instruction
writes to memory
prematurely
C20 X X X X X X X X X NoFix Memory type undefined for
nonmemory operations
C21 X X Fixed Bus protocol conflict with
optimized chipsets
C22 X X X X X X X X X NoFix FP Data Operand Pointer
may not be zero after power
on or Reset
C23 X X X X X X X X X NoFix MOVD following zeroing
instruction can cause
incorrect result
C24 X X X X X X X X X NoFix Premature execution of a
load operation prior to
exception handler invocation
C25 X X X X X X X X X NoFix Read portion of RMW
instruction may execute
twice
13
INTEL® CELERON® PROCESSOR SPECIFICATION UPDATE
Summary of Errata
NO. CPUID/Stepping Plans ERRATA
650h
651h
660h
665h
683h
686h
68Ah
6B1h
6B4h
A0
A1
A0
B0
B0
C0
D0
A1
B1
C26 X X X X Fixed Test pin must be high during
power up
C27 X X X X X X X X Fixed Intervening writeback may
occur during locked
transaction
C28 X X X X X X X X X NoFix MC2_STATUS MSR has
model-specific error code
and machine check
architecture error code
reversed
C29 X X X X X X X X X NoFix MOV with debug register
causes debug exception
C30 X X X X X X X X X NoFix Upper four PAT entries not
usable with Mode B or Mode
C paging
C31 X X Fixed Incorrect memory type may
be used when MTRRs are
disabled
C32 X X X Fixed Misprediction in program
flow may cause unexpected
instruction execution
C33 X X X X X X X X X NoFix Data Breakpoint Exception in
a displacement relative near
call may corrupt EIP
C34 X X X X X X X X X NoFix System bus ECC not
functional with 2:1 ratio
C35 X X X X X X X Fixed Fault on REP CMPS/SCAS
operation may cause
incorrect EIP
C36 X X X X X X X NoFix RDMSR and WRMSR to
invalid MSR address may not
cause GP fault
C37 X X X X X X X NoFix SYSENTER/SYSEXIT
instructions can implicitly
load “null segment selector”
to SS and CS registers
C38 X X X X X X X NoFix PRELOAD followed by
EXTEST does not load
boundary scan data
C39 X X X X X X Fixed Far jump to new TSS with D-
bit cleared may cause
system hang
14
®
INTEL
CELERON® PROCESSOR SPECIFICATION UPDATE
Summary of Errata
NO. CPUID/Stepping Plans ERRATA
650h
651h
660h
665h
683h
686h
68Ah
6B1h
6B4h
A0
A1
A0
B0
B0
C0
D0
A1
B1
C40 X X X X Fixed Incorrect chunk ordering may
prevent execution of the
machine check exception
handler after BINIT#
C41 X X X X X Fixed UC write may be reordered
around a cacheable write
C42 X X X X X X Fixed Resume Flag may not be
cleared after debug
exception
C43 X X X X Fixed Internal cache protocol
violation may cause system
hang
C44 X X X X X X X X X NoFix GP# fault on WRMSR to
ROB_CR_BKUPTMPDR6
C45 X X X X X Fixed Machine Check Exception
may occur due to improper
line eviction in the IFU
C46 X X X X X X X X X NoFix Lower bits of SMRAM
SMBASE register cannot be
written with an ITP
C47 X X X X X X Fixed Task switch may cause
wrong PTE and PDE access
bit to be set
C48 X X X X X X X X X NoFix Cross-modifying code
operations on a jump
instruction may cause a
general protection fault
C49 X X X X X X X Fixed Deadlock may occur due to
illegal-instruction/page-miss
combination
C50 X X X X X X X X X NoFix FLUSH# assertion following
STPCLK# may prevent CPU
clocks from stopping
C51 X X X X X X Fixed Floating-point exception
condition may be deferred
C52 X X X X X X X Fixed Cache Line Reads May
Result in Eviction of Invalid
Data
15
INTEL® CELERON® PROCESSOR SPECIFICATION UPDATE
Summary of Errata
NO. CPUID/Stepping Plans ERRATA
650h
651h
660h
665h
683h
686h
68Ah
6B1h
6B4h
A0
A1
A0
B0
B0
C0
D0
A1
B1
C53 X X X X X NoFix FLUSH# servicing delayed
while waiting for
STARTUP_IPI in 2-way MP
systems
C54 X X X X X NoFix Double ECC error on read
may result in BINIT#
C55 X X X X X NoFix MCE due to L2 parity error
gives L1 MCACOD.LL
C56 X X X X X NoFix EFLAGS discrepancy on a
page fault after a
multiprocessor TLB
shootdown
C57 X X X X X NoFix Mixed cacheability of lock
variables is problematic in
MP systems
C58 X X X X X NoFix INT 1 with DR7.GD set does
not clear DR7.GD
C59 X X X X X NoFix Potential loss of data
coherency during MP data
ownership transfer
C60 X X X X X NoFix Misaligned Locked access to
APIC space results in a hang
C61 X X X X X NoFix Memory ordering based
synchronization may cause a
livelock condition in MP
Systems
C62 X X X X X NoFix Processor may assert
DRDY# on a write with no
data
C63 X Fixed Machine check exception
may occur due to improper
line eviction in the IFU
C65 X X NoFix Snoop request may cause
DBSY# hang
C66 X Fixed MASKMOVQ instruction
interaction with string
operation may cause
deadlock
C67 X X X X X NoFix MOVD, CVTSI2SS, or
PINSRW Following Zeroing
Instruction Can Cause
Incorrect Result
16
®
INTEL
CELERON® PROCESSOR SPECIFICATION UPDATE
Summary of Errata
686h
68Ah
6B1h
6B4h
C0
D0
A1
B1
A0
651h
A1
660h
A0
665h
B0
683h
B0
NO. CPUID/Stepping Plans ERRATA
650h
C68 X NoFix Snoop probe during FLUSH#
could cause L2 to be left in
shared state
C69 X Fixed Livelock May Occur Due to
IFU Line Eviction
C70 X X X X X Fixed Selector for the LTR/LLDT
register may get corrupted
C71 X X X X X X X X X NoFix
INIT does not clear global
entries in the TLB
C72 X X X X X X X X X NoFix
VM bit will be cleared on a
double fault handler
C73 X X X X X X X X X NoFix
Memory aliasing with
inconsistent A and D bits
may cause processor
deadlock
C74 X X X X X X X X X
NoFix
Processor may report invalid
TSS fault instead of Double
fault during mode C paging
C75 X X Fixed APIC failure at CPU
core/system bus frequency
of 766/66 MHz
C76 X X X X X X X X X NoFix Machine check exception
may occur when interleaving
code between different
memory types
C77 X X X X X X X X X NoFix Wrong ESP Register Values
During a Fault in VM86 Mode
C78 X X X X X X X X X NoFix APIC ICR Write May Cause
Interrupt Not to be Sent
When ICR Delivery Bit
Pending
C79 X X X X X X X X Fixed The instruction fetch unit
(IFU) may fetch
instructions based upon stale
CR3 data after a write to
CR3 Register
C80 X NoFix Processor Might not Exit
Sleep State Properly Upon
De-assertion of CPUSLP#
Signal
C81 X X NoFix During Boundary Scan, BCLK
not Sampled High When
17
INTEL® CELERON® PROCESSOR SPECIFICATION UPDATE
Summary of Errata
NO. CPUID/Stepping Plans ERRATA
650h
651h
660h
665h
683h
686h
68Ah
6B1h
6B4h
A0
A1
A0
B0
B0
C0
D0
A1
B1
SLP# is Asserted Low
C82 X X
NoFix Incorrect assertion of
THERMTRIP# Signal
C83 X X X X X X X X X NoFix Under some complex
conditions, the Instructions in
the shadow of a JMP FAR
may be unintentionally
executed and retired
C84 X X X X X X X X X NoFix Processor Does not Flag #GP
on Non-zero Write to Certain
MSRs
C85 X X X X X X X X X NoFix
C86 X X X X X X X X X NoFix
IFU/BSU Deadlock May
Cause System Hang
REP MOVS Operation in Fast
string Mode Continues in that
Mode When Crossing into a
Page with a Different Memory
Type
C87 X X X X X X X X X NoFix
POPF and POPFD
Instructions that Set the Trap
Flag Bit May Cause
Unpredictable Processor
Behavior
C88 X X X X X X X X X NoFix
The FXSAVE, STOS, or
MOVS Instruction May Cause
a Store Ordering Violation
When Data Crosses a Page
with a UC Memory Type
C89 X X X X X X X X X NoFix
Code Segment Limit Violation
May Occur on 4 Gigabyte
Limit Check
C90 X X X X X X X X X NoFix
FST Instruction with Numeric
and Null Segment Exceptions
May Cause General Protection
Faults to be Missed and FP
Linear Address (FLA)
Mismatch
C91 X X X X X X X X X NoFix
Code Segment (CS) is
Incorrect on SMM Handler
when SMBASE is not Aligned
C92 X X X X X X X X X NoFix
Page with PAT (Page Attribute
Table) Set to USWC
(Uncacheable Speculative
Write Combine) While
Associated MTRR (Memory
Type Range Register) is UC
18
®
INTEL
CELERON® PROCESSOR SPECIFICATION UPDATE
Summary of Errata
686h
68Ah
6B1h
6B4h
C0
D0
A1
B1
A0
651h
A1
660h
A0
665h
B0
683h
B0
NO. CPUID/Stepping Plans ERRATA
650h
(Uncacheable) May
Consolidate to UC
C93 X X X X X X X X X NoFix
Under Certain Conditions LTR
(Load Task Register)
Instruction May Result in
System Hang
C93 X X X X X X X X X NoFix
Under Certain Conditions LTR
(Load Task Register)
Instruction May Result in
System Hang
C94 X X X X X X X X X NoFix
Loading from Memory Type
USWC (Uncacheable
Speculative Write Combine)
May Get Its Data Internally
Forwarded from a Previous
Pending Store
C95 X X X X X X X X X NoFix
FXSAVE after FNINIT Without
an Intervening FP (Floating
Point) Instruction May Save
Uninitialized Values for FDP
(x87 FPU Instruction Operand
(Data) Pointer Offset) and
FDS (x87 FPU Instruction
Operand (Data) Pointer
Selector)
C96 X X X X X X X X X NoFix
FSTP (Floating Point
Store) Instruction Under
Certain Conditions May Result
In Erroneously Setting a Valid
Bit on an FP (Floating
Point) Stack Register
C97 X X X X X X X X X NoFix
Invalid Entries in PageDirectory-Pointer-Table
Register (PDPTR) May Cause
General Protection (#GP)
Exception if the Reserved Bits
are Set to One
Writing the Local Vector
Table (LVT)
C98 X X X X X X X X X NoFix
when an Interrupt is Pending
May Cause an Unexpected
Interrupt
The Processor May Report
C99 X X X X X X X X X NoFix
an Invalid TSS Fault Instead
of a #GP Fault
C100 X X X X X X X X X NoFix
A Write to an APIC Register
Sometimes May Appear to
19
INTEL® CELERON® PROCESSOR SPECIFICATION UPDATE
Summary of Errata
NO. CPUID/Stepping Plans ERRATA
650h
651h
660h
665h
683h
686h
68Ah
6B1h
6B4h
A0
A1
A0
B0
B0
C0
D0
A1
B1
Have Not Occurred
Using 2M/4M Pages When
C101 X X X X X X X X X NoFix
A20M# Is Asserted May
Result in Incorrect Address
Translations
Values for LBR/BTS/BTM will
C102 X X X X X X X X X NoFix
be Incorrect after an Exit
from SMM
C103 X X X X X X X X X NoFix
INIT Does Not Clear Global
Entries in the TLB
REP MOVS/STOS Executing
with Fast Strings Enabled
and Crossing Page
C104 X X X X X X X X X NoFix
Boundaries with Inconsistent
Memory Types may use an
Incorrect Data Size or Lead
to Memory-Ordering
Violations
The BS Flag in DR6 May be
C105 X X X X X X X X X NoFix
Set for Non-Single-Step #DB
Exception
Fault on ENTER Instruction
C106 X X X X X X X X X NoFix
May Result in Unexpected
Values on Stack Frame
Unaligned Accesses to
C107 X X X X X X X X X NoFix
Paging Structures May
Cause the Processor to
Hang
INVLPG Operation for Large
C108 X X X X X X X X X NoFix
(2M/4M) Pages May be
Incomplete under Certain
Conditions
Page Access Bit May be Set
C109 X X X X X X X X X NoFix
Prior to Signaling a Code
Segment Limit Fault
EFLAGS, CR0, CR4 and the
C110 X X X X X X X X X NoFix
EXF4 Signal May be
Incorrect after Shutdown
Performance Monitoring
Event
C111 X X X X X X X X X NoFix
FP_MMX_TRANS_TO_MMX
May Not Count Some
Transitions
20
®
INTEL
CELERON® PROCESSOR SPECIFICATION UPDATE
* Fix will be only on Celeron
processors with CPUID=068xh.
Summary of Documentation Changes
CPUID/Stepping
NO.
650h
A0
651h
A1
660h
A0
665h
B0
683h
B0
686h
C0
68Ah
D0
6B1h
A1
6B4h
B1
Plans
DOCUMENTATION
CHANGES
C1 X X X X X X X X X Doc SSE and SSE2 Instructions
Opcodes
C2
X X X X X X X X X Doc
Executing the SSE2 Variant
on a Non-SSE2 Capable
Processor
C3 X X X X X X X X X Doc
C4 X X X X X X X X X Doc
C5 X X X X X X X X X Doc
Direction Flag (DF) Mistakenly
Denoted as a System Flag
Fopcode Compatibility Mode
FCOS, FPTAN, FSIN, and
FSINCOS Trigonometric
Domain not correct
C6 X X X X X X X X X Doc
C7 X X X X X X X X X Doc
C8 X X X X X X X X X Doc
C9 X X X X X X X X X Doc
C10 X X X X X X X X X Doc
C11 X X X X X X X X X Doc
C12 X X X X X X X X X Doc
C13 X X X X X X X X X Doc
C14 X X X X X X X X X Doc
C15 X X X X X X X X X Doc
C16 X X X X X X X X X Doc
C17 X X X X X X X X X Doc
C18 X X X X X X X X X Doc
Incorrect Description of stack
EFLAGS Register Correction
PSE-36 Paging Mechanism
0x33 Opcode
Incorrect Information for SLDT
LGDT/LIDT Instruction
Information Correction
Errors In Instruction Set
Reference
RSM Instruction Set Summary
Correct MOVAPS and
MOVAPD Operand Section
DAA—Decimal Adjust AL after
Addition
DAS—Decimal Adjust AL after
Subtraction
Omission of Dependency
between BTM and LBR
I/O Permissions Bitmap Base
Addy > 0xDFFF Does not
Cause #GP(0) Fault
C19 X X X X X X X X X Doc
C20 X X X X X X X X X Doc
C21 X X X X X X X X X Doc
Wrong Field Width for MINSS
and MAXSS
Figure 15-12 PEBS Record
Format
I/O Permission Bit Map
21
INTEL® CELERON® PROCESSOR SPECIFICATION UPDATE
Summary of Documentation Changes
CPUID/Stepping
650h
651h
660h
665h
683h
686h
68Ah
6B1h
NO.
A0
A1
A0
B0
B0
C0
D0
A1
6B4h
B1
Plans
C22 X X X X X X X X X Doc
C23 X X X X X X X X X Doc
C24 X X X X X X X X X Doc
DOCUMENTATION
CHANGES
Cache Description
Instruction Formats and
Encoding
Machine-Check Initialization
22
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