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电子-VK16K33LED驱动原厂中文资料规格书.pdf
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VK16K33 LED Driver IC
RAM Mapping 16*8 LED Controller Driver with keyscan
General Description
The VK16K33 is a memory mapping and multi-function LED
controller driver. The max. Display
segment numbers in the device is 128 patterns (16 segments and 8 commons) with a 13*3 (MAX.) matrix key
scan circuit. The software configuration features of the VK16K33 makes it suitable for multiple LED applications
including LED modules and display subsystems. The VK16K33 is compatible with most microcontrollers and
communicates via a two-line bidirectional I
2
C -bus.
Features
z Operating voltage: 4.5V~5.5V
z Integrated RC oscillator
z I
2
C-bus interface
z 16*8 bits RAM for display data storage
z Max. 16 x 8 patterns, 16 segments and 8 commons
z R/W address auto increment
z Max. 13 x 3 matrix key scanning
z 16-step dimming circuit
z Selection of 20/24/28-pin SOP package types
Application
z Industrial control indicators
z Digital clocks, thermometers, counters, multimeters
z Combo sets
z VCR sets
z Instrumentation readouts
z Other consumer applications
z LED Displays
Rev 1.0 2017-06-27
1/34
台湾元泰股份授权大陆总代理
联系人:许先生 QQ:191 888 5898 TEL:188 9858 2398 E-mail:zes1688@163.com
Pin Function
Symbol Name Description
SDA I/O I
2
C interface Serial Data Input/Output.
SCL I I
2
C interface Serial Clock Input.
V
DD
- Positive power supply for logic circuit.
V
SS
- Negative power supply for logic circuit, ground.
COM0/AD O
Common output pin, active low during display.
Also used as device address source output pin, active high during power on
reset and key scan.
COM1/KS0~COM3/KS2 O
Common output pin, active low when displaying.
Also used as the Key source output pin, active high during a key scan
operation.
COM4~COM7 O
Common outputs pin, active low during display.
28 Pin package
ROW0/A2~ROW2/A0 I/O
ROW output pin, active high when displaying.
Also used as the device address data input pin, internal pull-low during
power on reset and during key scan operation.
ROW3/K1~ROW14/K12 I/O
ROW outputs pin, active high during display.
Also used as the Key data input pin, internal pull-low during a key scan
operation.
ROW15/K13/INT I/O
When the “INT/ROW” bit of ROW/INT set register is set to “0”,this pin
become a Row driver output pin, active high when displaying, and Key
data input during a key scan operation.
When the “INT/ROW” bit of ROW/INT set register is set to “1”, this pin
become Interrupt signal (INT) output pin.
INT pin output active-low when the “act” bit of the Row/int setup register
is set to “0”.
INT pin output active-high when the “act” bit of the Row/int setup register
is set to “1”.
24 Pin package
ROW0/A1~ROW1/A0 I/O
ROW output pin, active high when displaying.
Also used as the device address data input pin, internal pull-low during a
power on reset and during a key scan operation.
ROW2/K1~ROW10/K9 I/O
ROW outputs pin, active high when displaying.
Also used as the Key data inputs pin, internal pull-low during a key scan
operation.
ROW11/K10/INT I/O
When the “INT/ROW” bit of ROW/INT set register is set to “0”,this pin
become a Row driver output, active high when displaying, and Key data
input during a key scan operation.
When the “INT/ROW” bit of ROW/INT set register is set to “1”,this pin
VK16K33 LED Driver IC
Rev 1.0 2017-06-27
3/34
台湾元泰股份授权大陆总代理
联系人:许先生 QQ:191 888 5898 TEL:188 9858 2398 E-mail:zes1688@163.com
become an Interrupt signal (INT) output pin.
INT pin output active-low when the “act” bit of the Row/int setup register
is set to “0”.
INT pin output active-high when the “act” bit of the Row/int setup register
is set to “1”.
20 Pin package
ROW0/K1~ROW6/K7 I/O
ROW output pin, active high when displaying.
Also used as the Key data inputs pin, internal pull-low during a key scan
operation.
ROW7/K8 /INT I/O
When the “INT/ROW” bit of the ROW/INT setup register is set to “0”,this
pin become a Row driver output, active high when displaying, and Key
data input during a key scan operation.
When the “INT/ROW” bit of the ROW/INT set register is set to “1”,this
pin become an Interrupt (INT) signal output pin.
INT pin output active-low when the “act” bit of Row/int setup register is
set to “0”.
INT pin output active-high when the “act” bit of the Row/int setup register
is set to “1”.
Approximate Internal Connections
VK16K33 LED Driver IC
Rev 1.0 2017-06-27
4/34
台湾元泰股份授权大陆总代理
联系人:许先生 QQ:191 888 5898 TEL:188 9858 2398 E-mail:zes1688@163.com
Block Diagram
Functional Description
Power-on Reset
When power is applied, the IC is initialised by an internal power-on reset circuit. The status of the internal
circuit after initialisation is as follows:
z System Oscillator will be in an off state .
z COM0~COM3 outputs are set to V
DD
.
z COM4~COM7 outputs will be high impedance .
z All Rows pins are changed input pins .
z LED Display is in the off state. .
z Key scan stopped .
z The combined Row/INT pins are setup as ROW outputs .
z Dimming is set to 16/16duty .
Data transfers on the I
2
C-bus should be avoided for 1 ms following a power-on to allow completion of the
reset action.
VK16K33 LED Driver IC
Rev 1.0 2017-06-27
5
/34
台湾元泰股份授权大陆总代理
联系人:许先生 QQ:191 888 5898 TEL:188 9858 2398 E-mail:zes1688@163.com
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