Ultra-Low Voltage Intel® Celeron® Processor — 650 MHz and 400 MHz
— Quick Start for low power, low exit latency clock “throttling”
— Deep Sleep mode for lower power dissipation
• Thermal diode for measuring processor temperature
1.2
1.3
State of the Data
All information in this document is the best available information at the time of publication.
Revisions of this document will be provided on an as-required basis.
Terminology
Term
Definition
#
A “#” symbol following a signal name indicates that the signal is active low. This means that when
the signal is asserted (based on the name of the signal) it is in an electrical low state. Otherwise,
signals are driven in an electrical high state when they are asserted. In state machine diagrams, a
signal name in a condition indicates the condition of that signal being asserted
!
Indicates the condition of that signal not being asserted. For example, the condition “!STPCLK# and
HS” is equivalent to “the active low signal STPCLK# is unasserted (i.e., it is at 1.5V) and the HS
condition is true.”
L
Electrical low signal levels
Electrical high signal levels
H
0
Logical low. For example, BD[3:0] = “1010” = “HLHL” refers to a hexadecimal “A,” and D[3:0]# =
“1010” = “LHLH” also refers to a hexadecimal “A.”
1
Logical high. For example, BD[3:0] = “1010” = “HLHL” refers to a hexadecimal “A,” and D[3:0]# =
“1010” = “LHLH” also refers to a hexadecimal “A.”
ULV
TBD
X
Ultra-Low Voltage
Specifications that are yet to be determined and will be updated in future revisions of the document.
Don’t care condition
1.4
References
• P6 Family of Processors Hardware Developer’s Manual (244001)
• Intel® Architecture Optimization Reference Manual (245127)
• Intel® Architecture Software Developer’s Manual
— Volume I: Basic Architecture (245470)
— Volume II: Instruction Set Reference (245471)
— Volume III: System Programming Guide (245472)
• CK-408 (CK-Titan) Clock Synthesizer/Driver Specification (Contact your Intel Field Sales
Representative)
• Mobile Intel® Pentium® III Processor-M I/O Buffer Models, IBIS Format (Contact your Intel
Field Sales Representative)
10
Datasheet
INTEL [ INTEL ]
