8-Digit, Microprocessor- Compatible, LED Display Decoder Driver The ICM7228BIJI is a device manufactured by **INTERSIL** (now part of Renesas Electronics). Below are its key specifications, descriptions, and features based on available data:
### **Specifications:**
- **Manufacturer:** INTERSIL
- **Type:** 8-Digit Microprocessor-Compatible LED Display Driver
- **Package:** 28-Pin PLCC (Plastic Leaded Chip Carrier)
- **Supply Voltage:** **4.5V to 6V** (typically **5V**)
- **Current Consumption:** Low power operation
- **Display Compatibility:** Drives **8-digit LED displays** (common cathode)
- **Interface:** **Microprocessor-compatible** (parallel or serial)
- **Multiplexing:** **1:8 digit multiplexing**
- **Brightness Control:** Adjustable via external resistor or PWM
- **Operating Temperature Range:** **-40°C to +85°C**
### **Descriptions:**
- The ICM7228BIJI is an **8-digit LED display driver** designed for interfacing with microprocessors.
- It includes **on-chip memory (RAM)** for storing display data.
- Supports **BCD or hexadecimal input** for digit encoding.
- Features **automatic display blanking** for leading/trailing zeros.
### **Features:**
1. **8-Digit Drive Capability** – Controls up to 8 common-cathode LED digits.
2. **Microprocessor Interface** – Compatible with both **parallel and serial** data input.
3. **On-Chip Memory** – Includes **8 x 8-bit RAM** for display data storage.
4. **Multiplexed Output** – Reduces external component count via **1:8 digit multiplexing**.
5. **Brightness Control** – Adjustable via an external resistor or PWM signal.
6. **Low Power Consumption** – Optimized for battery or low-power applications.
7. **Wide Operating Voltage** – Supports **4.5V to 6V** (ideal for 5V systems).
8. **Industrial Temperature Range** – Operates from **-40°C to +85°C**.
This information is based on the manufacturer's datasheet for the ICM7228BIJI. For detailed electrical characteristics and timing diagrams, refer to the official documentation.
