Intel CELERON 1.10 GHZ User Manual

16 Datasheet
Intel
®
Celeron
®
Processor up to 1.10 GHz
2.2.1 Normal State—State 1
This is the normal operating state for the processor.
2.2.2 AutoHALT Power Down State—State 2
AutoHALT is a low power state entered when the processor executes the HALT instruction. The
processor will transition to the Normal state upon the occurrence of SMI#, BINIT#, INIT#, or
LINT[1:0] (NMI, INTR). RESET# will cause the processor to immediately initialize itself.
The return from a System Management Interrupt (SMI) handler can be to either Normal Mode or
the AutoHALT Power Down state. See the Intel Architecture Software Developer's Manual,
Volume III: System Programmer's Guide (Order Number 243192) for more information.
FLUSH# will be serviced during the AutoHALT state, and the processor will return to the
AutoHALT state.
The system can generate a STPCLK# while the processor is in the AutoHALT Power Down state.
When the system deasserts the STPCLK# interrupt, the processor will return execution to the
HALT state.
Figure 1. Clock Control State Machine
2. Auto HALT Power Down State
BCLK running.
Snoops and interrupts allowed.
4. Auto HALT Power Down State
BCLK running.
Snoops and interrupts allowed.
Snoop
Event
Occurs
Snoop
Event
Serviced
HALT Instruction and
HALT Bus Cycle generated
INIT#, BINIT#, INTR, SMI#,
RESET#
Snoop event occurs
Snoop event serviced
1. Normal State
Normal execution.
3. Stop Grant State
BCLK running.
Snoops and interrupts allowed.
STPCLK#
asserted
STPCLK#
deasserted
5. Sleep State
BCLK running.
Snoops and interrupts allowed.
SLP#
asserted
SLP#
deasserted
6. Deep Sleep State
BCLK stopped.
No Snoops and interrupts allowed.
BCLK
input
stopped
BCLK
input
restarted
STPCLK# Deasserted
and Stop Grant entered
from Auto HALT.

Intel CELERON 1.10 GHZ Specifications

General

Brand	Intel
Model	CELERON 1.10 GHZ
Category	Computer Hardware
Language	English