Technical data

Electrical Characteristics
MCIMX31C/MCIMX31LC Technical Data, Rev. 4.3
Freescale Semiconductor 17
NOTE
The term NVCC in this section refers to the associated supply rail of an
input or output. The association is shown in the Signal Multiplexing chapter
of the reference manual. NVCC for Table 12 refers to NVCC1 and
NVCC3–10; QVCC refers to QVCC, QVCC1, and QVCC4.
Table 12. GPIO DC Electrical Parameters
Parameter Symbol Test Conditions Min Typ Max Units
High-level output voltage V
OH
I
OH
= –1 mA NVCC –0.15 — — V
I
OH
= specified Drive 0.8*NVCC — — V
Low-level output voltage V
OL
I
OL
= 1 mA — — 0.15 V
I
OL
= specified Drive — — 0.2*NVCC V
High-level output current, slow slew rate I
OH_S
V
OH
=0.8*NVCC
Std Drive
High Drive
Max Drive
–2
–4
–8
——mA
High-level output current, fast slew rate I
OH_F
V
OH
=0.8*NVCC
Std Drive
High Drive
Max Drive
–4
–6
–8
——mA
Low-level output current, slow slew rate I
OL_S
V
OL
=0.2*NVCC
Std Drive
High Drive
Max Drive
2
4
8
——mA
Low-level output current, fast slew rate I
OL_F
V
OL
=0.2*NVCC
Std Drive
High Drive
Max Drive
4
6
8
——mA
High-Level DC input voltage V
IH
— 0.7*NVCC — NVCC V
Low-Level DC input voltage V
IL
—0—0.3*QVCCV
Input Hysteresis V
HYS
Hysteresis enabled 0.25 — — V
Schmitt trigger VT+ V
T
+ Hysteresis enabled 0.5*QVCC — — V
Schmitt trigger VT– V
T
– Hysteresis enabled — — 0.5*QVCC V
Pull-up resistor (100 kΩ PU) R
PU
1
1
Not a precise value. Measurements made on small sample size have shown variations of ±50% or more.
— — 100 —
kΩ
Pull-down resistor (100 kΩ PD) R
PD
1
— — 100 —
Input current (no PU/PD) I
IN
V
I
= NVCC or GND — — ±1 μA
Input current (100 kΩ PU) I
IN
V
I
= 0 — — 25 μA
μA
Input current (100 kΩ PD) I
IN
V
I
= NVCC — — 28 μA
Tri-state leakage current I
OZ
V
I
= NVCC or GND
I/O = High Z
——±2 μA