
MC94MX21 Technical Data, Rev. 1.
5
14
Freescale Semiconductor
Specifications
3
Specifications
This section contains the electrical specifications and timing diagrams for the i.MX21 processor.
3.1
Maximum Ratings
Table 3 provides the maximum ratings.
CAUTION
permanent damage to the device. These are stress ratings only. Functional operation
of the device at these or any other conditions beyond those indicated under
Exposure to maximum-rated conditions for extended periods may affect device
reliability.
3.2
Recommended Operating Range
Table 4 provides the recommended operating ranges. The device has multiple pairs of VDD and VSS
power supply and return pins. QVDD, QVDDx, and QVSS pins are used for internal logic. All other VDD
and VSS pins are for the I/O pads voltage supply, and each pair of VDD and VSS provides power to the
enclosed I/O pads. This design allows different peripheral supply voltage levels in a system.
Because VDDA pins are supply voltages to the analog pads, it is recommended to isolate and noise-filter
the VDDA pins from other VDD pins.
For more information about I/O pads grouping per VDD, please refer to
Table 4.
Table 3. Maximum Ratings
Ref. Num
Parameter
Symbol
Min
Max
Units
1
Supply Voltage
QVDDmax, QVDDXmax
-0.3
2.1
V
NVDDmax, VDDAmax
-0.3
3.3
V
2
Input Voltage Range
VImax
-0.3
VDD + 0.31
1. VDD is the supply voltage associated with the input. See Signal Multiplexing Scheme table in the reference manual.
V
3
Storage Temperature Range
Tstorage
-55
150
oC
Table 4. 333/350 MHz Recommended Operating Range
Rating
Symbol
Minimum
Maximum
Unit
Operating temperature range
Part No. Suffix
DVKN
TA
-30
70
°C
I/O supply voltage NVDD 1–6
NVDDx
1.70
3.30
V
Internal supply voltage (Core = 333 MHz)
QVDD, QVDDx
1.65
1.80
V
Internal supply voltage (Core = 350 MHz)
QVDD, QVDDx
1.70
1.80
V
Analog supply voltage
VDDA
1.70
3.30
V
Because
of
an
order
from
the
United
States
International
Trade
Commission,
BGA-packaged
product
lines
and
part
numbers
indicated
here
currently
are
not
available
from
Freescale
for
import
or
sale
in
the
United
States
prior
to
September
2010:
MC94MX21DVKN3