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MAX6950CEE Datasheet(PDF) 1 Page - Maxim Integrated Products

Part No. MAX6950CEE
Description  Serially Interfaced, 2.7V to 5.5V, 5- and 8-Digit LED Display Drivers
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Maker  MAXIM [Maxim Integrated Products]
Homepage  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX6950CEE Datasheet(HTML) 1 Page - Maxim Integrated Products

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General Description
The MAX6950/MAX6951 are compact common-cath-
ode display drivers that interface microprocessors to
individual 7-segment numeric LED digits, bar graph, or
discrete LEDs through an SPI™-, QSPI™-MICROWIRE™-
compatible serial interface. The supply voltage can be
as low as 2.7V.
The MAX6950 drives up to five 7-segment digits or 40
discrete LEDs. The MAX6951 drives up to eight 7-seg-
ment digits or 64 discrete LEDs.
Included on-chip are hexadecimal character decoders
(0–9, A–F), multiplex scan circuitry, segment and digit
drivers, and a static RAM that stores each digit. The
user may select hexadecimal decoding or no-decode
for each digit to allow any mix of 7-segment digits, bar
graph, or discrete LEDs to be driven. The segment cur-
rent for the LEDs is set by an internal digital brightness
control. The segment drivers are slew-rate limited to
reduce EMI.
Individual digits may be addressed and updated with-
out rewriting the entire display. The devices include a
low-power shutdown mode, digital brightness control, a
scan-limit register that allows the user to display from
one to eight digits, segment blinking that can be syn-
chronized across drivers, and a test mode that forces
all LEDs on.
Applications
Set-Top Boxes
Panel Meters
White Goods
Bar Graphs and Matrix Displays
Industrial Controllers and Instrumentation
Professional Audio Equipment
Medical Equipment
Features
♦ High-speed 26MHz SPI-, QSPI-, MICROWIRE-
Compatible Serial Interface
♦ +2.7V to +5.5V Operation
♦ Individual LED Segment Control
♦ Segment Blinking Control that Can Be
Synchronized Across Multiple Drivers
♦ Hexadecimal Decode/No-Decode Digit Selection
♦ Digital Brightness Control
♦ Display Blanked on Power-Up
♦ Drives Common-Cathode LED Digits
♦ Multiplex Clock Syncronizable to External Clock
♦ Slew-Rate Limited Segment Drivers for Low EMI
♦ 75µA Low-Power Shutdown (Data Retained)
♦ Small 16-Pin QSOP Package
Serially Interfaced, +2.7V to +5.5V,
5- and 8-Digit LED Display Drivers
________________________________________________________________ Maxim Integrated Products
1
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
DIN
V+
(DIG6)/SEG6
DIG4/SEG4
(DIG5)/SEG5
(DIG7)/SEG7
SEG8
OSC
TOP VIEW
MAX6950
MAX6951
QSOP
CS
CLK
DIG3/SEG3
DIG0/SEG0
DIG2/SEG2
DIG1/SEG1
ISET
GND
( ) MAX6951 ONLY
Pin Configuration
19-2227; Rev 2; 3/05
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX6950CEE
0°C to +70°C
16 QSOP-EP*
MAX6950EEE
-40°C to +85°C
16 QSOP-EP*
MAX6951CEE
0°C to +70°C
16 QSOP-EP*
MAX6951EEE
-40°C to +85°C
16 QSOP-EP*
Functional Diagram appears at end of data sheet.
Typical Application appears at end of data sheet.
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
*EP = Exposed pad.


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