mcimx50 Freescale Semiconductor, Inc, mcimx50 Datasheet - Page 37

• Manufacturer Part Number: mcimx50
• Description: I.mx50 Applications Processors For Consumer Products
• Manufacturer: Freescale Semiconductor, Inc

4.5
The load circuit and output transition time waveforms are shown in
electrical characteristics for slow and fast I/O are presented in the
that the fast or slow I/O behavior is determined by the appropriate control bit in the IOMUX control
registers.
4.5.1
Table 24
Freescale Semiconductor
Output Pad Transition Times (Max Drive)
Output Pad Transition Times (High Drive)
Output Pad Transition Times (Medium Drive)
Output Pad Transition Times (Low Drive)
Output Pad Slew Rate (Max Drive)
Output Pad Slew Rate (High Drive)
Output Pad Slew Rate (Medium Drive)
Output Pad Slew Rate (Low Drive)
Output Pad di/dt (Max Drive)
shows the AC parameters for GPIO slow I/O.
Output (at I/O)
I/O AC Parameters
GPIO I/O Slow AC Parameters
Parameter
i.MX50 Applications Processors for Consumer Products, Rev. 0
1
Figure 5. Output Transition Time Waveform
CL includes package, probe and fixture capacitance
Table 24. GPIO I/O Slow AC Parameters
tr
Figure 4. Load Circuit for Output
20%
From output
Under test
80%
Symbol Test Condition
tr, tf
tr, tf
tr, tf
tr, tf
tps
tps
tps
tps
tdit
15 pF
35 pF
15 pF
35 pF
15 pF
35 pF
15 pF
35 pF
15 pF
35 pF
15 pF
35 pF
15 pF
35 pF
15 pF
35 pF
Test point
CL
Table 24
0.32/0.37
0.43/0.54
0.26/0.41
0.34/0.41
0.20/0.22
0.5/0.65
0.18/0.2
0.09/0.1
Min
Figure 4
tf
and
and
Table
Typ
80%
20%
Figure
Electrical Characteristics
25, respectively. Note
NVCC
0V
10.55/9.70
1.91/1.52
3.07/2.65
2.22/1.81
3.81/3.42
2.88/2.42
5.43/5.02
4.94/4.50
Max
30
5. The AC
mA/ns
V/ns
V/ns
V/ns
V/ns
Unit
ns
ns
ns
ns
37