PT2581

V1.0

5

May 2018

PIN DESCRIPTION

Pin Name

I/O

Type

Description

Pin No.

VSS3_D3

-

Ground

Digital VSS Ground

1

UART_TX1

O

TTL

UART Macro transmit data and download embedded flash.

2

GPIOB7

I/O

TTL

General-purpose B input/output 07

UART_RX1

I

TTL

UART Macro receive data and download embedded flash

3

GPIOB6

I/O

TTL

General-purpose B input/output 06

IRIN

I

TTL

IR-remote input signal to control Fan Motor.

OSCI_SEL

I/O

TTL

Oscillator Clock Input Source Select, Default Clock Select

“0”-

XTAL8M; “1”-RC8M

4

OSCI

I

Analog

XTAL oscillator input, Freq.=8MHz

5

OSCO

O

Analog

XTAL oscillator output.

6

RESETN

I

TTL

System reset input, low active.

7

VSS3_PLL

-

Ground

Analog VSS Ground for PLL Module.

8

VCC3_PLL

-

Power

Analog VCC 3.3V for PLL Module.

9

ADI_LS0

I

Analog

Analog-to-digital converter input 0 for Low-Speed Signal.

10

ADI_LS1

I

Analog

Analog-to-digital converter input 1 for Low-Speed Signal.

11

ADI_LS2

I

Analog

Analog-to-digital converter input 2 for Low-Speed Signal.

12

ADI_LS3

I

Analog

Analog-to-digital converter input 3 for Low-Speed Signal.

13

ADI_LS4

I

Analog

Analog-to-digital converter input 4 for Low-Speed Signal.

14

ADI_LS5

I

Analog

Analog-to-digital converter input 5 for Low-Speed Signal.

15

ZCU_IN

I

Analog

Analog-to-digital converter input for Motor U-Phase BEMF Signal.

16

ZCV_IN

I

Analog

Analog-to-digital converter input for Motor V-Phase BEMF Signal.

17

ZCW_IN

I

Analog

Analog-to-digital converter input for Motor W-Phase BEMF Signal.

18

N.C

-

None

None

19

VSS3_ADC_REG

-

Ground

Analog VSS Ground.

20

VCC3_ADC_REG

-

Power

Analog VCC 3.3V.

21

TEST1

I

Analog

Test1-Pin Enable for Test Mode Only

22

VSS3_D1

-

Ground

Digital VSS Ground.

23

VCC3_D1

-

Power

Digital VCC 3.3V.

24

TEST_EN

I

TTL

Test0-Pin Enable for Test Mode Only.

25

PWM_WL

O

TTL

W-Phase Low-Side PWM Output.

26

GPIOC7

I/O

TTL

General-purpose C input/output 07.

PWM_VL

O

TTL

V-Phase Low-Side PWM Output.

27

GPIOC6

I/O

TTL

General-purpose C input/output 06.

PWM_UL

O

TTL

U-Phase Low-Side PWM Output.

28

GPIOC5

I/O

TTL

General-purpose C input/output 05.

PWM_WH

O

TTL

W-Phase High-Side PWM Output.

29

GPIOC4

I/O

TTL

General-purpose C input/output 04.

PWM_VH

O

TTL

V-Phase High-Side PWM Output.

30

GPIOC3

I/O

TTL

General-purpose C input/output 03.

PWM_UH

O

TTL

U-Phase High-Side PWM Output.

31

GPIOC2

I/O

TTL

General-purpose C input/output 02.

GPIOB4

I/O

TTL

General-purpose B input/output 4.

32

GPIOB3

I/O

TTL

General-purpose B input/output 3.

33

INT0

I

TTL

External Interrupt 0 Input.

34

GPIOA0

I/O

TTL

General-purpose A input/output 0.

HADTRG

I

TTL

External Trigger Input for High-Speed ADC operation.

INT1

I

TTL

External Interrupt 1 Input.

35

GPIOA1

I/O

TTL

General-purpose A input/output 1.

SPICSN

I

TTL

Enable SPI Serial Interface, Active low.

INT2

I

TTL

External Interrupt 2 Input.

36

GPIOA2

I/O

TTL

General-purpose A input/output 2.