MAX6953 Datasheet, PDF (1/23 Pages) Maxim Integrated Products – 2-Wire Interfaced, 2.7V to 5.5V, 4-Digit 5 x 7 Matrix LED Display Driver

19-2312; Rev 2; 11/02
2-Wire Interfaced, 2.7V to 5.5V, 4-Digit 5 ✕ 7
Matrix LED Display Driver
General Description
The MAX6953 is a compact cathode-row display driver
that interfaces microprocessors to 5 ✕ 7 dot-matrix LED
displays through an I²C™-compatible serial interface.
The MAX6953 drives up to four digits (140 LEDs).
Included on-chip are an ASCII 104-character font, mul-
tiplex scan circuitry, column and row drivers, and static
RAM that stores each digit, as well as font data for 24
user-definable characters. The segment current for the
LEDs is set by an internal digit-by-digit digital bright-
ness control.
The device includes a low-power shutdown mode, seg-
ment blinking (synchronized across multiple drivers, if
desired), and a test mode that forces all LEDs on. The
LED drivers are slew-rate limited to reduce EMI.
For an SPI™-compatible version, refer to the MAX6952
data sheet. An EV kit is available for the MAX6952.
Applications
Message Boards
Medical Equipment
Industrial Displays
Audio/Video Equipment
Gaming Machines
Features
o 400kbps 2-Wire Interface Compatible with I²C
o 2.7V to 5.5V Operation
o Drives 4 Monocolor or 2 Bicolor Cathode-Row
5 ✕ 7 Matrix Displays
o Built-In ASCII 104-Character Font
o 24 User-Definable Characters Available
o Automatic Blinking Control for Each Segment
o 70µA Low-Power Shutdown (Data Retained)
o 16-Step Digital Brightness Control
o Display Blanked on Power-Up
o Slew-Rate-Limited Segment Drivers for Lower EMI
o 36-Pin SSOP and 40-Pin DIP Packages
o Extended Temperature Range as Standard
PART
MAX6953EAX
MAX6953EPL
Ordering Information
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
36 SSOP
40 PDIP
Pin Configurations appear at end of data sheet.
Typical Application Circuit
3.3V
V+
O0
V+
O1
V+
O2
O3
47µF
100nF
GND
O4
O5
GND
O6
GND
O7
O8
3.3V
MAX6953 ^O9
O10
O11
4.7kΩ 4.7kΩ 4.7kΩ
O12
O13
O14
SCL
SDA
BLINK
AD1
O15
O16
O17
AD0
O18
O19
OSC
O20
O21
ISET
O22
O23
26pF
53.6kΩ
CSET
RSET
DIGIT 0
O14
C1
O15
C2
O16
C3
O17
C4
O18
C5
O0
R1
O1
R2
O2
R3
O3
R4
O4
R5
O5
R6
O6
R7
DIGIT 2
O14
C1
O15
C2
O16
C3
O17
C4
O18
C5
O7
R1
O8
R2
O9
R3
O10
R4
O11
R5
O12
R6
O13
R7
DIGIT 1
O19
C1
O20
C2
O21
C3
O22
C4
O23
C5
O0
R1
O1
R2
O2
R3
O3
R4
O4
R5
O5
R6
O6
R7
DIGIT 3
O19
C1
O20
C2
O21
C3
O22
C4
O23
C5
O7
R1
O8
R2
O9
R3
O10
R4
O11
R5
O12
R6
O13
R7
I²C is a trademark of Philips Corp.
SPI is a trademark of Motorola, Inc.
________________________________________________________________ Maxim Integrated Products 1
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.