HT32F52230 datasheet(29/39 Pages) HOLTEK

29 / 39 page

Rev. 1.21

29 of 39

April 11, 2017

32-Bit ARM® Cortex™-M0+ MCU

HT32F52220/HT32F52230

I/O Port Characteristics

Table 16 I/O Port Characteristics

TA = 25°C, unless otherwise specified.

Symbol

Parameter

Conditions

Min Typ Max Unit

IIL

Low Level Input

Current

3.3 V IO

VI = VSS, On-chip pull-up

resister disabled.

—

μA

Reset pin

—

μA

IIH

High Level Input

Current

3.3 V IO

VI = VDD, On-chip pull-

down resister disabled.

—

μA

Reset pin

—

μA

VIL

Low Level Input

Voltage

3.3 V IO

- 0.5

—

VDD ×

0.35

Reset pin

- 0.5

—

VDD ×

0.35

VIH

High Level Input

Voltage

3.3 V IO

VDD ×

0.65

—

VDD +

0.5

Reset pin

VDD ×

0.65

—

VDD +

0.5

VHYS

Schmitt Trigger Input

Voltage Hysteresis

3.3 V IO

—

0.12

× VDD

—

Reset pin

—

0.12

× VDD

—

IOL

Low Level Output

Current

(GPIO Sink current)

3.3 V IO 4 mA drive, VOL = 0.4 V

—

3.3 V IO 8 mA drive, VOL = 0.4 V

—

3.3 V IO 12 mA drive, VOL = 0.4 V

—

3.3 V IO 16 mA drive, VOL = 0.4 V

—

IOH

High Level Output

Current

(GPIO Source current)

3.3 V I/O 4 mA drive, VOH = VDD - 0.4 V

—

3.3 V I/O 8 mA drive, VOH = VDD - 0.4 V

—

3.3 V I/O 12 mA drive, VOH = VDD - 0.4 V 12

—

3.3 V I/O 16 mA drive, VOH = VDD - 0.4 V 16

—

VOL

Low Level Output

Voltage

3.3 V 4 mA drive IO, IOL = 4 mA

—

0.4

3.3 V 8 mA drive IO, IOL = 8 mA

—

0.4

3.3 V 12 mA drive IO, IOL = 12 mA

—

0.4

3.3 V 16 mA drive IO, IOL = 16 mA

—

0.4

VOH

High Level Output

Voltage

3.3 V 4 mA drive IO, IOH = 4 mA

VDD -

0.4

—

3.3 V 8 mA drive IO, IOH = 8 mA

VDD -

0.4

—

3.3 V 12 mA drive IO, IOH = 12 mA

VDD -

0.4

—

3.3 V 16 mA drive IO, IOH = 16 mA

VDD -

0.4

—

RPU

Internal Pull-up

Resistor

3.3 V I/O

—

kΩ

RPD

Internal Pull-down

Resistor

3.3 V I/O

—

kΩ

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