Specifications subject to changes without prior notice
72
MB86860 SPARClite
12. ELECTRICAL CHARACTERISTICS
This electrical characteristics shows Target Spec. These specifications may undergo future changes based
on actual device after characterization.
12.1. Absolute Maximum Ratings
VSS=0V
Symbol
Rating
Min.
Max.
Units
VDDE
Supply Voltage (I/O)
-0.5
4.0
V
VDDI
Supply Voltage (Core)
Input vVVV
-0.5
3.0
V
VI
Input Voltage
-0.5
VDDE+0.5
V
TSTG
Storage Temperature
-55
125
TBIAS
Ambient Temp. Under Bias
0
70
Note
Stresses above those listed under Absolute Rating may cause permanent damage to the
device. This is a stress rating only and functional operation of the device at these or
any other condition above those indicated in the operation section of this specification
is not implied. Exposure to Absolute Maximum Ratings conditions for external periods
may affect device reliability.
Recommended Conditions
Power and ground connections must be made to multiple Vdd and Vss pins. Every MB86860 based circuit board should include
power(Vdd) and ground (Vss) planes for power distribution. Every Vdd pin must be connected to the power plane, and every
Vss pins must be connected to the ground plane. Pins identified as “N.C” must not be connected in the system.
Liberal decoupling capacitance should be placed near the MB86860. The processor can cause transient power surges when its
numerous output buffers transition, particularly when connected to large capacitive loads.
Low inductance capacitors and interconnections are recommended for best high frequency electrical performance.
Inductance can be reduced shortening the board traces between the processor and decoupling capacitors as much as possible.
For reliable operation, alternate bus masters must drive any pins that are three-stated by the MB86860 when it has granted
the bus, in particular LOCK#, ADR<31:2>, ASI<3:0>, BE0-7#, D<63:0>, AS#, and RDWR#, RD#, DTYP<1:0> must be
driven by alternate bus masters. These pins are normally driven by the processor during active and idle bus states and don’t
require external pull-ups. N.C. pins must always remain unconnected.
12.2. Recommended Operating Conditions
VSS=0V
Symbol
Rating
Min.
Typ.
Max.
Units
VDDE
Supply Voltage (I/O)
3.15
3.3
3.45
V
VDDI
Supply Voltage (Core)
2.4
2.5
2.6
V
VIL
Input Low Voltage
-0.3
-
0.8
V
VIH
Input High Voltage
2.0
-
VDDE+0.3
V
Topr
Operating Temperature
0
25
70
2 Power Supply Systems are required for MB86860. The order of supplying each voltage is recomended
as follows.
On Power-On
VDDI è VDDE è External Signals
On Power-Off
External Signals
è V
DDE è VDDI