MC94MX21 Datasheet, PDF (15/98 Pages) Freescale Semiconductor, Inc – 333 and 350 MHz

Specifications
3.3 DC Electrical Characteristics
Table 5 contains the DC characteristics of the i.MX21.
Table 5. DC Characteristics
Parameter
Symbol
Test Conditions
Min
Typ¹
Max
High-level input voltage
Low-level Input voltage
High-level output voltage
Low-level output voltage
High-level output current, slow I/O
V_IH
–
0.7NVDD
–
NVDD
V_IL
–
O
–
0.3NVDD
V_OH
I_OH = spec’ed Drive 0.8NVDD
–
–
V_OL
I_OL = spec’ed Drive
–
–
0.2NVDD
I_{OH_S}
V_out=0.8NVDD
–
–
DSCR² = 000
-2
DSCR = 001
-4
DSCR = 011
-8
DSCR = 111
-12
High-level output current, fast I/O
I_{OH_F}
V_out=0.8NVDD1
–
–
DSCR² = 000
-3.5
DSCR = 001
-4.5
DSCR = 011
-5.5
DSCR = 111
-6.5
Low-level output current, slow I/O
I_{OL_S}
V_out=0.2NVDD
–
–
DSCR² = 000
2
DSCR = 001
4
DSCR = 011
8
DSCR = 111
12
Low-level output current, fast I/O
I_{OL_F}
V_out=0.2NVDD1
–
–
DSCR² = 000
3.5
DSCR = 001
4.5
DSCR = 011
5.5
DSCR = 111
6.5
Schmitt trigger Positive–input threshold
V_T +
–
–
–
2.15
Schmitt trigger Negative–input threshold V_T -
0.75
–
–
Hysteresis
V_HYS
–
–
0.3
–
Input leakage current (no pull-up or pull-
I_in
V_in = 0 or NVDD
–
down)
–
±1
I/O leakage current
I_OZ
V_I/O = NVDD or 0
–
I/O = High impedance
state
–
±5
1. Data labeled Typical is not guaranteed, but is intended as an indication of the IC's potential performance.
2. For DSCR definition refer to the System Control chapter in the reference manual.
Units
V
V
mA
mA
mA
mA
V
V
V
μA
μA
Table 6 shows the input and output capacitance for the device.
Table 6. Input/Output Capacitance
Parameter
Input capacitance
Output capacitance
Symbol
C_i
C_o
Min
Typ
–
–
–
–
Max
Units
5
pF
5
pF
MC94MX21 Technical Data, Rev. 1.4
Freescale Semiconductor
15