
i.MX35 Applications Processors for Automotive Products, Rev. 10
Freescale Semiconductor
22
Table 14 shows the DC electrical characteristics for GPIO, DDR2, mobile DDR, and SDRAM pins. The
term NVCC refers to the power supply voltage that feeds the I/O of the module in question. For example,
NVCC for the SD/MMC interface refers to NVCC_SDIO.
Table 14. I/O Pin DC Electrical Characteristics
Pin
DC Electrical Characteristics Symbol
Test Condition
Min.
Typ.
Max.
Unit
GPIO
High-level output voltage
Voh
Ioh = –1 mA
Ioh = specified drive
NVCC – 0.15
0.8
× NVCC
——
V
Low-level output voltage
Vol
Iol = 1 mA
Iol = specified drive
——
0.15
0.2
× NVCC
V
High-level output current for
slow mode
(Voh = 0.8
× NVCC)
Ioh
Standard drive
High drive
Max. drive
–2.0
–4.0
–8.0
——
mA
High-level output current
for fast mode
(Voh = 0.8
× NVCC)
Ioh
Standard drive
High drive
Max. drive
–4.0
–6.0
–8.0
——
mA
Low-level output current
for slow mode
(Voh = 0.2
× NVCC)
Iol
Standard drive
High drive
Max. drive
2.0
4.0
8.0
——
mA
Low-level output current
for fast mode
(Voh = 0.2
× NVCC)
Iol
Standard drive
High drive
Max. drive
4.0
6.0
8.0
——
mA
High-level DC Input
Voltage with 1.8 V,
3.3 V NVCC (for digital
cells in input mode)
VIH
—
0.7
× NVCC
—
NVCC
V
Low-level DC Input
Voltage with 1.8 V,
3.3 V NVCC (for digital
cells in input mode
VIL
—
–0.3 V
—
0.3
× NVCC
V
Input Hysteresis
VHYS
OVDD = 3.3 V
OVDD = 1.8 V
—410
330
—mV
Schmitt trigger VT+
VT+
—
0.5
× NVCC
—
V
Schmitt trigger VT–
VT–
—
0.5
× NVCC
V
Pull-up resistor
(22 k
Ω PU)
Rpu
Vi = 0
—
22
—
k
Ω
Pull-up resistor
(47 k
Ω PU)
Rpu
Vi = 0
—
47
—
k
Ω
Pull-up resistor
(100 k
Ω PU)
Rpu
Vi = 0
—
100
—
k
Ω
Pull-down resistor (100 k
Ω PD)
Rpd
Vi = NVCC
—
100
—
k
Ω
External resistance to pull
keeper up when enabled
Rkpu
Ipu
> 620 μA
@ min Vddio = 3.0 V
——
4.8
k
Ω
External resistance to pull
keeper down when enabled
Rkpd
Ipu > 510
μA
@min Vddio = 3.0 V
——
5.9
k
Ω