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UPD78320L(A1) from NEC

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UPD78320L(A1)

Manufacturer: NEC

16/8-bit single-chip microcomputer

Partnumber Manufacturer Quantity Availability
UPD78320L(A1) NEC 630 In Stock

Description and Introduction

16/8-bit single-chip microcomputer The **UPD78320L(A1)** is a microcontroller manufactured by **NEC (now part of Renesas Electronics)**. Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Architecture:** 8-bit microcontroller  
- **CPU Core:** NEC 78K/0 Series  
- **Clock Speed:** Up to **10 MHz**  
- **Operating Voltage:** **4.5V to 5.5V**  
- **ROM (Program Memory):** **16 KB (Mask ROM)**  
- **RAM (Data Memory):** **512 bytes**  
- **I/O Ports:** **38 general-purpose I/O pins**  
- **Timers:**  
  - 8-bit timer × 2  
  - 16-bit timer × 1  
  - Watchdog timer  
- **Serial Interfaces:**  
  - **UART (Asynchronous Serial Interface)**  
  - **I²C (Inter-Integrated Circuit) Interface**  
- **ADC (Analog-to-Digital Converter):** **8-channel, 8-bit resolution**  
- **Interrupts:** Multiple internal and external interrupt sources  
- **Package Type:** **PLCC (Plastic Leaded Chip Carrier), 68-pin**  

### **Descriptions & Features:**  
- Designed for embedded control applications requiring moderate processing power.  
- Includes on-chip **oscillator circuit** for clock generation.  
- Supports **low-power modes** for energy efficiency.  
- Features **high noise immunity**, making it suitable for industrial environments.  
- Includes **hardware multiplication/division** support for arithmetic operations.  
- **Mask ROM variant** (factory-programmed, not user-rewritable).  

This microcontroller was commonly used in **consumer electronics, industrial controls, and automotive applications** during its production period.  

*(Note: Since NEC was acquired by Renesas, newer equivalents or replacements may exist under Renesas branding.)*

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