Specification Update

MOBILE INTEL
®
CELERON
®
PROCESSOR at 466 MHz, 433 MHz, 400 MHz,
366 MHz, 333 MHz, 300 MHz, 266 MHz SPECIFICATION UPDATE
53
H3. Bulk Capacitance Requirements For The System Electronics
This is a clarification to the Intel
®
Celeron Processor: Mobile Module MMC-1 (Order Number #245101), the
Intel
®
Mobile Celeron Processor: Mobile Module MMC-2 (Order Number #245102):
Placement of sufficient bulk capacitance on the system electronics board is critical to the operation
of the Intel Celeron processor mobile module and to ensure the system design can accommodate
future high frequency modules. Intel has provided the maximum possible bulk capacitance on the
module. However, in order to achieve proper filtering and in-rush current protection, it is imperative
that additional filtering be provided on the system electronics board. Table 1 details the bulk
capacitance requirements for the system electronics. Also, take special note of the voltage rating
requirement for the capacitors on each respective voltage rail.
Note that the rating requirement and note 5 has been changed from previous versions of this table in
the Celeron Processor Mobile Module datasheet. Future revisions of this specification will include
these new changes.
Table 1. Bulk Capacitance
Power Plane Capacitance Requirements Max Total
ESR
Ripple Current Rating
V_DC 100 uf
5
, 0.1 uf, 0.01 uf
1
20 mΩ 4.5A-7.5A
3
3A ~ 5A
4
20% tolerance at 35V
V_5 100 uf
5
, 0.1 uf, 0.01 uf
1
100 mΩ 1A 20% tolerance at 10V
V_3 470 uf
5
, 0.1 uf, 0.01 uf
1
100 mΩ 1A 20% tolerance at 6V
V_3S 100 uf
5
, 0.1 uf, 0.01 uf
1
100 mΩ N/A 20% tolerance at 6V
VCC_AGP 22 uf
5
, 0.1 uf, 0.01 uf
1
100 mΩ 1A 20% tolerance at 6V
V_CPUPU 2.2 uf, 8200 pf
1
N/A N/A 20% tolerance at 6V
V_CLK 10 uf
5
, 8200 pf
2
N/A N/A 20% tolerance at 6V
NOTES:
1. Placement of above capacitance requirements should be located near the connector.
2. V_CLK filtering should be located next to the system clock synthesizer.
3. Ripple current specification depends on V_DC input for the Geyserville module.
4. Ripple current specification depends on V_DC input for the single frequency module.
5. If Tantalum Capacitors are used, a 50% voltage de-rating practice must be observed (for example, a 5.0-V rail
requires a 10.0-V rated capacitor).