STLED316SMTR datasheet(30/33 Pages) STMICROELECTRONICS

Part #	STLED316SMTR

Description	Serial-interfaced 6-digit LED controller with keyscan

PDF	33 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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30 / 33 page

Application information

STLED316S

30/33

11.2

Power supply sequencing

Proper power-supply sequencing is advised for all CMOS devices. It is

recommended to always apply VCC before applying any signals to the input/output

or control pins.

11.3

Application diagram

Figure 9.

STLED316S application diagram

Table 19.

Part list

Resistors

Capacitors

Diodes

Supply V

RSET = external

resistor for current

setting

C1 = 33 µF (25V)

electrolytic

D1-D8 = 1N4148

VCC = 5 V ± 10%

R1 = 1-10 K

DIN/DOUT external

pull-up resistor

C2 = 0.01- 0.1 µF

(25 V) ceramic

R2 = 1-10 K

Ω IRQ_N

external pull-up resistor

R3-R4 = 10 K

Ωexternal

key-matrix pull-down

resistors

ISET

KEY1-KEY2

SEG1/KS1

-SEG8/KS8

DIG2-DIG7

GND

DIG1_LED

MCU

STLED316S

Keyscan

(8 x 2 matrix)

RSET

LED 6-digit 7-segment (+dot-point) display panel

CLK

STB

DIN / DOUT

IRQ_N

CS00018

VCC

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