UL316

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

2 of 5

www.unisonic.com.tw

QW-R125-032.C



PIN CONFIGURATIONS



PIN CONFIGURATIONS

PIN

NUMBER

SYMBOL

TYPE

NAME AND FUNCTION

1

DIN/DOUT

IN/OUT

Output serial data at falling edge of the shift clock, starting from lower bit.

Input serial data is clocked in at rising edge of the shift clock, starting from

lower bit.

2

CLK

IN

Reads serial data at rising edge, and outputs data at falling edge.

3

STB

IN

Initializes serial interface at rising or falling edge for reception of command.

Data input after the falling edge of STB are processed as a command. While

command data are processed, current processing is stopped, and the serial

interface is initialized. While STB is high, instructions are ignored.

4

IRQ_N

OUT

Interrupt output (active low) to interrupt the MCU when there is a key press

5

DIG1_LED

OUT

Single output LED used together with the 8 segments to drive up to 8

discrete LEDs

6

DIG2

OUT

Digit output pin

7

DIG3

OUT

Digit output pin

8

DIG4

OUT

Digit output pin

9

PWR

5.0 V ± 10% Core main supply voltage. Bypass to GND through a 0.1 μF

capacitor as close to the pin as possible

10

DIG5

OUT

Digit output pin

11

DIG6

OUT

Digit output pin

12

DIG7

OUT

Digit output pin

13

SEG8/KS8

OUT

Segment output pin (dual function as key source)

14

SEG7/KS7

OUT

Segment output pin (dual function as key source)

15

SEG6/KS6

OUT

Segment output pin (dual function as key source)

16

SEG5/KS5

OUT

Segment output pin (dual function as key source)

17

GND

PWR

Connect this pin to system GND

18

SEG4/KS4

OUT

Segment output pin (dual function as key source)

19

SEG3/KS3

OUT

Segment output pin (dual function as key source)

20

SEG2/KS2

OUT

Segment output pin (dual function as key source)

21

SEG1/KS1

OUT

Segment output pin (dual function as key source)

22

KEY2

IN

Key 2 input

23

KEY1

IN

Key 1 input

24

ISET

IN

Segment current setting. Connect to GND through a resistor to set the peak

segment current.