MB86831 FUJITSU [Fujitsu Component Limited.], MB86831 Datasheet - Page 22

• Manufacturer Part Number: MB86831
• Description: 32-bit Embedded Controller
• Manufacturer: FUJITSU [Fujitsu Component Limited.]

22
MB86830 Series
(Notes on Board Wiring)
WARNING: Semiconductor devices can be permanently damaged by application of stress (voltage,
• For connecting the power supply and ground (GND), use multiple V
• Insert sufficient decoupling capacitors near the MB86830 series. Changes to the output levels of many of the
• For those systems which run at a high frequency, low-inductance capacitors and mutual wiring are recom-
• For system reliability, the pin entering the tristate when the MB86830 series enters the bus grant state should
on the MB86830 series must be a multilayer board containing power supply (V
stable power supply. Leave any pin designated as “N.C.” unconnected.
output pins on the MB86830 series (in particular, those with large load capacitance) may cause variation in
power supply.
mended. Inductance can be lowered by shortening the distance between the processor and decoupling
capacitor.
be driven by a bus master. In particular, the LOCK#, ADR<27:2>, ASI<3:0> (ASI<3:0>/ADR<28:31>, ASI<3:0>
/ADR<24:27>), BE0# to BE3#, D<31:0>, AS#, and RDWR# pins must be driven by other bus masters. Usually,
these pins require no external pull-up resistor because they are driven by the processor when the processor
is active or idle.
current,temperature, etc.) in excess of absolute maximum ratings. Do not exceed these ratings.
DD
and V
SS
pins. The system board based
DD
) and GND (V
SS
) layers for