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AS1116

Datasheet - P i n o u t

4 Pinout

Pin Assignments

Figure 2. Pin Assignments (Top View)

Pin Descriptions

Table 1. Pin Descriptions

Pin Name

QSOP-24

TQFN(4x4)-24

Description

SDI

1

22

Serial-Data Input. Data is loaded into the internal 16-bit shift register on the rising edge

of pin SCL.

DIG0:DIG7

2-5, 7-10

1, 2, 4, 5, 7, 8, 23,

24

Digit Drive Lines. Eight digit drive lines that sink current from the display cathode.

GND

6

3

Ground.

LD

11

9

Load. Serial Data is loaded into the shift register while this pin is low. The last 16 bits of

serial data are latched on the rising edge of this pin.

N/C

12

6

Not Connected.

13

10

peak segment current (see Selecting RSET Resistor Value and Using

External Drivers on page 17

).

SCL

14

11

Serial-Clock Input. 10MHz maximum rate. Data is shifted into the internal shift register

on the rising edge of this pin. Data is clocked out of pin SDO on the rising edge of this

pin.

SEGA:SEGG,

SEGDP

15-18,

20-23

12-15,

17-20

Seven Segment and Decimal Point Drive Lines. 8 seven-segment drives and

decimal point drive that source current to the display.

VDD

19

16

Positive Supply Voltage. Connect to +2.7 to +5.5V supply.

SDO

24

21

Serial-Data Output. The data into pin SDI is valid at pin SDO 16 clock cycles later. This

pin is used to daisy-chain several devices and is never high-impedance.

-

Exposed Pad

Exposed Pad. This pin also functions as a heat sink. Solder it to a large pad or to the

circuit-board ground plane to maximize power dissipation.

AS1116

SEG E

8

18

SEGB

14

DIG2

1

GND

3

AS1116

DIG5

5

10

12

VDD

16

SEGC

17

SEGG

15

SEGF

13

DIG3

2

DIG4

4

N/C

6

11

9

7

23

21

19

20

22

24