MC94MX21 Datasheet, PDF (14/98 Pages) Freescale Semiconductor, Inc – 333 and 350 MHz

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
Stresses beyond those listed under “Maximum Ratings,” (Table 3) may cause
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
“333/350 MHz Recommended Operating Range” (Table 4) is not implied.
Exposure to maximum-rated conditions for extended periods may affect device
reliability.
Table 3. Maximum Ratings
Ref. Num
Parameter
Symbol
Min
Max
Units
1
Supply Voltage
2
Input Voltage Range
3
Storage Temperature Range
QVDD_max, QVDDX_max
-0.3
NVDD_max, VDDA_max
-0.3
V_Imax
-0.3
T_storage
-55
2.1
V
3.3
V
VDD + 0.3¹
V
150
o_C
1. VDD is the supply voltage associated with the input. See Signal Multiplexing Scheme table in the reference manual.
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 4. 333/350 MHz Recommended Operating Range
Rating
Operating temperature range Part No. Suffix
DVKN
I/O supply voltage NVDD 1–6
Internal supply voltage (Core = 333 MHz)
Internal supply voltage (Core = 350 MHz)
Analog supply voltage
Symbol
T_A
NVDDx
QVDD, QVDDx
QVDD, QVDDx
VDDA
Minimum
-30
1.70
1.65
1.70
1.70
Maximum
Unit
70
°C
3.30
V
1.80
V
1.80
V
3.30
V
MC94MX21 Technical Data, Rev. 1.4
14
Freescale Semiconductor