HT1632C_15 Datasheet, PDF (1/25 Pages) Holtek Semiconductor Inc – 32×8 & 24×16 LED Driver

HT1632C
32×8 & 24×16 LED Driver
Features
• Operating voltage: 2.4V~5.5V
• MultipleLED display − 32 ROW /8 COM and
24 ROW & 16 COM
• Integrated display RAM − select32 ROW &
8 COM for 64×4 display RAM, or select
24 ROW & 16 COM for 96×4 display RAM
• 16-level PWM brightness control
• Integrated 256kHz RC oscillator
• Serial MCU interface − CS, RD, WR, DATA
• Data mode & command mode instruction
• Cascading function for extended applications
• Selectable NMOS open drain output driver and
PMOS open drain output driver for commons
• 48/52-pin LQFP package
Applications
• Industrial control indicator
• Digital clock, thermometer, counter, voltmeter
• Instrumentation readouts
• Other consumer application
• LED Displays
General Description
The HT1632C is a memory mapping LED display
controller/driver, which can select a number of ROW
and commons. These are 32 ROW & 8 Commons
and 24 ROW & 16 Commons. The device supports
16-gradation LEDs for each out line using PWM
control with software instructions. A serial interface
is conveniently provided for the command mode
and data mode. Only three or four lines are required
for the interface between the host controller and the
HT1632C. The display can be extended by cascading
the HT1632C for wider applications.
Block Diagram
VDD
VSS
D is p la y R A M
CS
RD
WR
D ATA
O SC
SYNC
C o n tro l
and
T im in g
C ir c u it
T im in g
G e n e ra to r
L E D D r iv e r
2
VDD
COM 0
COM 7
ROW 0
R O W 23
R O W 2 4 /C O M 1 5
R O W 3 1 /C O M 8
VSS
2
P W M C o n tro l
Rev. 1.60
1
August 19, 2015