Fintek

Feature Integration Technology Inc.

V0.20P

8

F16267

4 Pin Description

4.1. Power Pin

Pin No.

Pin Name

Type

Description

5

VBAT

Power source of RTC supplied from 3.3V battery

8

VSS

Ground

16

VCC

P

Power supply input 3.3V

4.2. GPIO Pin

Pin No.

Pin Name

Type

PWR

Description

4

GPIO5

VDD

General purpose input/output bit 5

11

GPIO0

VDD

General purpose input/output bit 0

12

GPIO1

VDD

General purpose input/output bit 1

13

GPIO2

VDD

General purpose input/output bit 2

14

GPIO3

VDD

General purpose input/output bit 3

15

GPIO4

VDD

General purpose input/output bit 4

4.3. RTC Pin

Pin No.

Pin Name

Type

PWR

Description

6

XTAL_32K_IN

AIN

VBAT

32.768KHz clock input

7

XTAL_32K_IN

AIN

VBAT

32.768KHz clock output

P

-

Power pins

-

TTL level input pin with schmitt trigger

- TTL level bi-directional pin with schmitt trigger, Open-drain output with 12 mA sink capability, 5V

tolerance

- Output pin with 12mA sink/driving

capability.5V tolerance

AIN

- Input pin (Analog).

AOUT

- Output pin (Analog).