INTEL
®
CELERON® PROCESSOR SPECIFICATION UPDATE
98
Instruction Set Reference
Section Opcode
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FPU Environment
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m14/28byte
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C3.
MTRR Initialization Clarification
The following sentence should be added to the end of the first paragraph of Section 9.12.5 of the
Intel
Architecture Software Developer’s Manual
, Volume 3: System Programming Guide: “The MTRRs must be
disabled prior to initialization or modification.”
C4.
Non-AGTL+ Output Low Current Clarification
In Table 6 of the
Intel
®
Celeron
®
Processor
Datasheet
, the note in
bold
should be added:
Symbol Parameter Min
Max
Unit Notes
V
IL
Input Low Voltage
-0.3
0.7
V
V
IH
Input High Voltage
1.7
2.625
V
2.5 V +5% maximum
V
OL
Output Low Voltage
0.4
V
2
V
OH
Output High Voltage
N/A
2.625
V
All outputs are open-
drain to 2.5 V +5%
I
OL
Output Low Current
14
mA
5
I
L
Leakage Current for Inputs,
Outputs, and I/O
±
100
μ
A
3, 4
Notes:
1.
Unless otherwise noted, all specifications in this table apply to all Celeron processor frequencies.
2.
Parameter measured at 14 mA (for use with TTL inputs).
3.
(0
≤
VIN
≤
2.5 V +5%).
4.
(0
≤
VOUT
≤
2.5 V +5%).
5.
Specified as the minimum amount of current that the output buffer must be able to sink. However, VOL_MAX
cannot be guaranteed if this specification is exceeded.