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MAX7219CNG
+BOMIC DRVR 7 SEGMENT 8 DIGIT 24DIP
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メーカーアナログ・デバイセズ社/マキシム・インテグレーテッド
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メーカー品番 #MAX7219CNG
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在庫状況6571
365 日間品質保証
7*24 日間の品質保証
90-時間単位のサービス保証
1日間のアフターサービス保証
仕様
| 属性 | 値 |
| Part Status | Obsolete |
| Display Type | LED |
| Configuration | 7 Segment + DP |
| Interface | 4-Wire Serial |
| Digits or Characters | 8 Digits |
| Current - Supply | 330 mA |
| Voltage - Supply | 4V ~ 5.5V |
| Operating Temperature | 0°C ~ 70°C |
| Mounting Type | Through Hole |
| Package / Case | 24-DIP (0.300", 7.62mm) |
| Supplier Device Package | 24-PDIP |
| Base Product Number | MAX7219 |
概要
Description
Key features include:
- Multiplexing: Drives up to 8 digits of 7-segment displays or an 8x8 LED matrix.
- Built-in Decoders: Automatically decodes BCD to 7-segment data for easy display.
- Adjustable Brightness: Features a digit brightness control and an overall intensity adjustment.
- Memory: Contains onboard memory for storing display data, allowing it to retain information when not actively refreshing the display.
- Cascading: Multiple MAX7219s can be cascaded to control larger displays with minimal wiring.
The MAX7219CNG is useful in applications such as digital clocks, scoreboards, and other devices requiring efficient display management.
Equivalent
Features
1. Serial Interface: Communicates via SPI, allowing easy integration with microcontrollers.
2. Multi-Digit Control: Supports up to 64 individual LEDs or 8 digits of 7-segment displays.
3. Brightness Control: Features adjustable LED brightness via a simple register setting.
4. Built-in BCD Decoder: Facilitates easy interfacing for 7-segment displays.
5. Low Power Consumption: Operates at low power, suitable for battery-operated applications.
6. Scan Limit and Decode Control: Allows users to configure the number of active digits and decode settings.
7. Easy Cascading: Multiple MAX7219 chips can be daisy-chained for larger displays without additional complexity.
8. Noise Immunity: Designed to minimize noise interference, ensuring reliable performance.
This makes the MAX7219CNG ideal for applications such as scoreboards, clocks, and other digital displays.
Pinout
1. V+ (Pin 1): Power supply for the chip (5V).
2. DIG0-DIG7 (Pins 2-9): Output pins for driving up to 8 digits (common cathode).
3. DOUT (Pin 10): Serial data output for cascading multiple devices.
4. DIN (Pin 11): Serial data input for receiving data.
5. CLK (Pin 12): Clock input for synchronizing data transmission.
6. CS (Pin 13): Chip Select input to enable the device.
7. LOAD (Pin 14): Load signal to latch data into the display.
8. Decode (Pin 15): Controls digit decoding (on/off).
9. Intensity (Pin 16): Adjusts display brightness.
10. Test (Pin 17): Activates all segments for testing.
11. V- (Pin 18): Ground connection.
12. NC (Pins 19-24): No Connect (unused).
The MAX7219CNG is primarily used for driving multiplexed 7-segment displays, LED matrices, and other LED configurations.
Manufacturer
Maxim Integrated's products often focused on enhancing performance, efficiency, and functionality in electronic systems. The MAX7219CNG specifically serves as a compact and efficient LED display driver, capable of controlling multiple seven-segment displays or LEDs through a serial interface.
In 2021, Maxim Integrated was acquired by Analog Devices, a leading global high-performance analog technology company, further expanding its product offerings and reach in the semiconductor market. The merged entity continues to emphasize innovation in signal processing and power management, catering to a diverse array of industries.
Application
1. LED Matrix Displays: Controlling 8x8 LED matrices for visual displays.
2. Seven-Segment Displays: Driving multiple seven-segment digits for numeric outputs in clocks and counters.
3. Scoreboards: Managing multiple displays in sports scoreboards and electronic display boards.
4. Digital Meters: Implementing digital voltmeters and ammeters.
5. Information Displays: Used in advertising and informational signage.
6. Toys and Gadgets: Enhancing visual effects in electronic toys and consumer gadgets.
Its SPI interface simplifies connections with microcontrollers, making it ideal for compact electronic designs.
Package
Frequently Asked Questions
Q: What type of display does the MAX7219CNG support?
A: It supports LED displays, specifically common-cathode 7-segment displays with decimal points.
Q: How many digits can this driver control simultaneously?
A: It can drive up to 8 digits of 7-segment LED display.
Q: What is the recommended supply voltage range for this IC?
A: The operating supply voltage is between 4V and 5.5V.
Q: What interface protocol does the MAX7219CNG use?
A: It uses a 4-wire serial interface (SPI-compatible) for communication.
Q: What is the maximum current consumption of this part?
A: The typical supply current is up to 330 mA when all segments are lit.
Q: Is this component suitable for surface mount assembly?
A: No, it uses a through-hole mounting type in a 24-pin DIP package.
Q: Can it drive a dot matrix display?
A: Yes, while specified for 7-segment, it can also drive an 8x8 LED dot matrix.
Q: What is the operating temperature range for the MAX7219CNG?
A: It operates reliably from 0°C to 70°C, suitable for commercial applications.
