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Drivers Maxim Integrated Products Input Devices



MAX7219ENG+
  1. Drivers Maxim Integrated Products Input Devices Inc
  2. Drivers Maxim Integrated Products Input Devices
  3. Drivers Maxim Integrated Products Input Devices Using

1-Wire Drivers 1-Wire ® drivers allow communication between a personal computer and Maxim's 1-Wire or iButton ® products, and they are provided for download free of charge. Also bundled with the 1-Wire drivers download is the OneWireViewer demonstration application software. To get started, you will need the following. Find the best pricing for Maxim Integrated MAX7219CWG+ by comparing bulk discounts from 9 distributors. Octopart is the world's source for MAX7219CWG+ availability, pricing, and technical specs and other electronic parts.

IC DRIVER LED DISPLAY 7SEG 24DIP
Maxim Integrated Products
1.MAX7221CWG.pdf (16 pages)
LED
7 Segment + DP
4-Wire Serial
8 Digits
330mA
4 V ~ 5.5 V
-40°C ~ 85°C
Through Hole
24-DIP (0.300', 7.62mm)
8
7
5000 uA (Min)
65 mA
4 V to 5.5 V
330 mA
1066 mW
+ 85 C
Through Hole
- 40 C
Lead free / RoHS Compliant
  • Current page: 1 of 16
The MAX7219/MAX7221 are compact, serial input/out-
microprocessors (µPs) to 7-segment numeric LED dis-
plays of up to 8 digits, bar-graph displays, or 64 indi-
decoder, multiplex scan circuitry, segment and digit
drivers, and an 8x8 static RAM that stores each digit.
Only one external resistor is required to set the seg-
ment current for all LEDs. The MAX7221 is compatible
rate-limited segment drivers to reduce EMI.
A convenient 4-wire serial interface connects to all
common µPs. Individual digits may be addressed and
MAX7219/MAX7221 also allow the user to select code-
The devices include a 150µA low-power shutdown
Drivers maxim integrated products input devices diagramDrivers maxim integrated products input devices inc
mode, analog and digital brightness control, a scan-
limit register that allows the user to display from 1 to 8
For applications requiring 3V operation or segment
19-4452; Rev 4; 7/03

Drivers Maxim Integrated Products Input Devices Inc

SPI and QSPI are trademarks of Motorola Inc. MICROWIRE is a trademark of National Semiconductor Corp.
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.
Industrial Controllers
TOP VIEW
LOAD (CS)
DIG 4
DIG 2
DIG 7
DIG 1
GND
________________________________________________________________ Maxim Integrated Products
11
1
3
5
7
9
MAX7219
DIP/SO
Panel Meters
Applications
23
21
19
17
15
13
Products
SEG D
SEG E
V+
SEG G
SEG F
CLK
♦ ♦ Individual LED Segment Control
♦ ♦ 150µA Low-Power Shutdown (Data Retained)
Input
♦ ♦ Display Blanked on Power-Up
♦ ♦ Slew-Rate Limited Segment Drivers
♦ ♦ SPI, QSPI, MICROWIRE Serial Interface (MAX7221)
Ordering Information continued at end of data sheet.
MAX7219CNG
MAX7219C/D
MAX7219EWG
for Lower EMI (MAX7221)
PART
MOSI
9.53kΩ
Typical Application Circuit
-40°C to +85°C
TEMP RANGE
0°C to +70°C
18
13
1
= +25°C.
ISET
LOAD (CS)
GND
MAX7219
GND
+5V
DIG 0–DIG 7
SEG A–G,
24 Narrow Plastic DIP
Dice*
24 Wide SO
PIN-PACKAGE
8 DIGITS
1

MAX7219ENG+ Summary of contents

Page 1

... MAX7221 ONLY DIP/SO SPI and QSPI are trademarks of Motorola Inc. MICROWIRE is a trademark of National Semiconductor Corp. ________________________________________________________________ Maxim Integrated Products 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. ♦ ♦ 10MHz Serial Interface ♦ ...

Page 2

Serially Interfaced, 8-Digit LED Display Drivers ABSOLUTE MAXIMUM RATINGS Voltage (with respect to GND) V+ ............................................................................-0. DIN, CLK, LOAD, CS ...............................................-0. All Other Pins.............................................-0.3V to (V+ + 0.3V) Current DIG 0–DIG 7 Sink Current..............................................500mA SEG A–G, ...

Page 3

Serially Interfaced, 8-Digit LED Display Drivers ELECTRICAL CHARACTERISTICS (continued) ( ±10 9.53kΩ ±1%, T SET A PARAMETER SYMBOL LOGIC INPUTS Input Current DIN, CLK LOAD, CS Logic High Input Voltage V Logic Low Input ...

Page 4

Serially Interfaced, 8-Digit LED Display Drivers __________________________________________Typical Operating Characteristics (V+ = +5V +25°C, unless otherwise noted.) A SCAN FREQUENCY vs. POSITIVE SUPPLY VOLTAGE 830 820 810 800 790 780 770 760 750 740 730 4.0 4.4 4.8 POSITIVE ...

Page 5

Serially Interfaced, 8-Digit LED Display Drivers PIN NAME 1 DIN Serial-Data Input. Data is loaded into the internal 16-bit shift register on CLK’s rising edge. Eight-Digit Drive Lines that sink current from the display common cathode. The MAX7219 pulls 2, ...

Page 6

Serially Interfaced, 8-Digit LED Display Drivers CS OR LOAD t CSS CLK t DIN DOUT Figure 1. Timing Diagram Table 1. Serial-Data Format (16 Bits) D15 D14 D13 D12 D11 Detailed Description MAX7219/MAX7221 Differences The MAX7219 ...

Page 7

Serially Interfaced, 8-Digit LED Display Drivers Table 2. Register Address Map ADDRESS REGISTER D15– D11 D10 D12 No- Digit Digit Digit Digit ...

Page 8

Serially Interfaced, 8-Digit LED Display Drivers Table 5. Code B Font REGISTER DATA 7-SEGMENT CHARACTER D7* D6– ...

Page 9

Serially Interfaced, 8-Digit LED Display Drivers Table 7. Intensity Register Format (Address (Hex) = 0xXA) DUTY CYCLE D7 MAX7219 MAX7221 1/32 1/16 X (min on) (min on) 3/32 2/16 X 5/32 3/16 X 7/32 4/16 X 9/32 5/16 X 11/32 ...

Page 10

Serially Interfaced, 8-Digit LED Display Drivers If the scan-limit register is set for three digits or less, individual digit drivers will dissipate excessive amounts of power. Consequently, the value of the R must be adjusted according to the number of ...

Page 11

Serially Interfaced, 8-Digit LED Display Drivers Table 11. R vs. Segment Current and SET LED Forward Voltage V LED I (mA) SEG 1.5 2.0 2.5 40 12.2 11.8 11.0 30 17.8 17.1 15.8 20 29.8 28.0 25.9 10 66.7 63.7 ...

Page 12

Serially Interfaced, 8-Digit LED Display Drivers 1N5524B 5.6V ± DATA IN 12 LOAD (CS) 13 CLOCK *4.7kΩ PULLUP REQUIRED FOR MAX7221 ( ) MAX7221 ONLY Figure 2. MAX7219/MAX7221 Driving 2.3in Displays 12 ...

Page 13

Serially Interfaced, 8-Digit LED Display Drivers 8 DIN DATA IN DIG 0 DIG 4 GND DIG 6 DIG 2 DIG 3 DIG 7 GND DIG 5 DIG 1 LOAD (CS) LOAD DATA ( ) MAX7221 ONLY CLOCK Figure 3. Cascading ...

Page 14

Serially Interfaced, 8-Digit LED Display Drivers Ordering Information (continued) PART TEMP RANGE MAX7221CNG 0°C to +70°C MAX7221CWG 0°C to +70°C MAX7221C/D 0°C to +70°C MAX7221ENG -40°C to +85°C MAX7221EWG -40°C to +85°C MAX7221ERG -40°C to +85°C *Dice are specified at ...

Drivers Maxim Integrated Products Input Devices

Page 15

Serially Interfaced, 8-Digit LED Display Drivers (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages TOP VIEW FRONT VIEW ______________________________________________________________________________________ ...

Drivers Maxim Integrated Products Input Devices Using

Page 16

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 16 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 © 2003 Maxim Integrated Products ...

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