CH450
Digital tube display driver chip CH450
Warning: get_headers(): SSL operation failed with code 1. OpenSSL Error messages: error:14090086:SSL routines:ssl3_get_server_certificate:certificate verify failed in /www/wwwroot/default/klayerslocal/wp-content/themes/klayers/single-product.php on line 60
Warning: get_headers(): Failed to enable crypto in /www/wwwroot/default/klayerslocal/wp-content/themes/klayers/single-product.php on line 60
Warning: get_headers(https://static.klayers.net/pdf/2308/CH450DS1-Qinheng_KL-426-0003882.pdf): failed to open stream: operation failed in /www/wwwroot/default/klayerslocal/wp-content/themes/klayers/single-product.php on line 60
Warning: Division by zero in /www/wwwroot/default/klayerslocal/wp-content/themes/klayers/functions.php on line 634
SKU: KL-426-0003882
Category: Analog Switches / Multiplexers
About this item
Attribute | Value |
---|---|
Manufacturer | WCH(Jiangsu Qin Heng) |
Package | DIP20; SOP20; |
Digital Tube | 6*8 |
Interface | 2-wire |
LED/segment LCD | 48/- |
Button | 48 |
Operating Voltage | 3.0V~5.5V |
Certification | RoHS |
Overview
The CH450 is a digital tube display driver and a keyboard scan control chip. The CH450 has a built-in clock oscillating circuit that can dynamically drive a 6-bit digital tube or 48 LED. It can also perform 48-key keyboard scanning. The CH450 exchanges data with a single chip microcomputer through a 2-wire serial interface. It can also provide a power-on reset signal to the single chip microcomputer.
Features
- Built-in display current drive stage, segment current is not less than 15mA, word current is not less than 80mA- Dynamic display scan control, direct drive 6-digit digital tube or 48 LED;
- Dynamic display scan control, direct drive 6-digit digital tube or 48 LED;
- Built-in 48-key keyboard controller based on 8×6 matrix keyboard scan;
- Built-in debounce circuit with pull-down resistor for built-in button status input;
- Provides an active low keyboard interrupt and provides a button release flag which can be used to query button presses and release;
- High-speed 2-wire serial interface with clock speeds from 0 to 2MHz, compatible with two-wire I2C bus, saving pins;
- Built-in clock oscillating circuit, no need to provide external clock or external oscillating components, more anti-interference;
- Built-in power-on reset, and can provide an active-high reset output for the single chip microcomputer;
- Supports low-power sleep, saves power, can be woken up by a button or wake up by a command operation;
- Available in DIP-20 and SOP-20 lead-free packages, compatible with RoHS, functions and pins are partially compatible with the CH455 chip.
Send your message to supplier
How to buy?
- Please enter the quantity you need, then click GET QUOTATION NOW button to add the products to your cart, no payment required.
- After receiving your order, we will contact you and share you with discount according to the quantity.
- If you confirm the order, you can proceed the payment when order is updated with price adjustment.