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UL318 Datasheet Preview

UL318 Datasheet

SERIAL-INTERFACED 10-DIGIT LED CONTROLLER

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UNISONIC TECHNOLOGIES CO.,LTD.
UL318
Preliminary
LINEAR INTEGRATED CIRCUIT
SERIAL-INTERFACED
10-DIGIT LED CONTROLLER
IC WITH KEYSCAN
DESCRIPTION
The UL318 is a compact LED controller and driver that
interface microprocessors to LED displays through a serial
3-wire interface. It drives LED connected in common anode
configuration. The UL318 drives up to LEDs in 10
segment/7 digit~13 segment/4 digit configuration while
functioning from a supply voltage of 5.0V.
SOP-28
FEATURES
* LED driver with 17 outputs (10 segments/7 digits~13
segments/4 digits)
* Output pins connected directly to the LEDs
* Key-scanning (10 x 2 matrix)
* 3-wire serial bus interface (CLK, STB, DIO)
* 8-step dimming circuit to control the overall display
brightness
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
UL318L-S28-R
UL318G-S28-R
* Inputs with Schmitt trigger give superior noise
immunity
* 5.0 V (± 10%) for VDD
* Drives common-anode LED digits
* Built-in power on reset circuits
* Built-in pull-up resistor (CLK,STB,DIO)
Package
SOP-28
Packing
Tape Reel
UL318G-S28-R
(1)Packing Type
(2)Package Type
(3)Green Package
(1) R: Tape Reel
(2) S28: SOP-28
(3) G: Halogen Free and Lead Free, L: Lead Free
MARKING
28 27 26 25 24 23 22 21 20 19 18 17 16 15
UTC
UL318
1 2 3 4 5 6 7 8 9 10 11 12 13 14
Date Code
L: Lead Free
G: Halogen Free
Lot Code
www.unisonic.com.tw
Copyright © 2020 Unisonic Technologies Co.,Ltd
1 of 6
QW-R125-087.c




UTC

UL318 Datasheet Preview

UL318 Datasheet

SERIAL-INTERFACED 10-DIGIT LED CONTROLLER

No Preview Available !

UL318
Preliminary
PIN CONFIGURATIONS
NC 1
DIO 2
CLK 3
STB 4
K1 5
K2 6
VDD 7
SEG1/KS1 8
SEG2/KS2 9
SEG3/KS3 10
SEG4/KS4 11
SEG5/KS5 12
SEG6/KS6 13
SEG7/KS7 14
LINEAR INTEGRATED CIRCUIT
28 GND
27 GRID1
26 GRID2
25 GND
24 GRID3
23 GRID4
22 GND
21 VDD
20 GRID5/SEG14
19 GRID6/SEG13
18 GRID7/SEG12
17 KS10/SEG10
16 KS9/SEG9
15 KS8/SEG8
PIN CONFIGURATIONS
PIN NUMBER
1
SYMBOL
NC
TYPE
/
2 DIO IN/OUT
3 CLK IN
4 STB IN
5
6
8 ~ 17
18 ~ 20
27,26,24,23
7,21
22, 25, 28
K1
K2
SEG1/KS1
SEG10/KS10
SEG12/GRID7
SEG14/GRID5
GRID1
GRID4
VDD
GND
IN
OUT
OUT
OUT
PWR
PWR
FUNCTION
NC
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.
Reads serial data at rising edge, and outputs data at falling
edge.
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.
Key input
Segment output pin (dual function as key source)
Segment output pin (dual function as Digit output pin)
Digit output pin
5.0 V ± 10% Core main supply voltage. Bypass to GND through
a 0.1 μF capacitor as close to the pin as possible
Connect this pin to system GND
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 6
QW-R125-087.c


Part Number UL318
Description SERIAL-INTERFACED 10-DIGIT LED CONTROLLER
Maker UTC
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UL318 Datasheet PDF






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