IC Phoenix logo

Home ›  S  › S98 > ST78C34CJ44

ST78C34CJ44 from XP

Fast Delivery, Competitive Price @IC-phoenix

If you need more electronic components or better pricing, we welcome any inquiry.

ST78C34CJ44

Manufacturer: XP, EXAR

GENERAL PURPOSE PARALLEL PRINTER PORT WITH 83 BYTE FIFO

Partnumber Manufacturer Quantity Availability
ST78C34CJ44 XP, EXAR 10042 In Stock

Description and Introduction

GENERAL PURPOSE PARALLEL PRINTER PORT WITH 83 BYTE FIFO The ST78C34CJ44 is a microcontroller manufactured by EXAR. Below are the factual details from Ic-phoenix technical data files:

### **Manufacturer:** EXAR  
### **Part Number:** ST78C34CJ44  

#### **Specifications:**  
- **Architecture:** 8-bit microcontroller  
- **Core:** MCS-51 compatible  
- **Clock Speed:** Up to 12 MHz  
- **Program Memory (ROM):** 8 KB (mask ROM)  
- **Data Memory (RAM):** 256 bytes  
- **I/O Ports:** 32 programmable I/O lines  
- **Timers/Counters:** 2 x 16-bit  
- **Serial Communication:** Full-duplex UART  
- **Interrupts:** 5 interrupt sources with 2 priority levels  
- **Operating Voltage:** 4.5V to 5.5V  
- **Package:** PLCC-44  

#### **Descriptions:**  
- The ST78C34CJ44 is an enhanced 8-bit microcontroller based on the MCS-51 architecture.  
- It features an integrated UART for serial communication and supports multiple interrupt sources.  
- Designed for embedded control applications requiring moderate processing power and I/O flexibility.  

#### **Features:**  
- MCS-51 instruction set compatible  
- 8 KB of on-chip ROM  
- 256 bytes of on-chip RAM  
- Two 16-bit timer/counters  
- Programmable serial port (UART)  
- Power-saving idle and power-down modes  
- 32 programmable I/O lines  
- 44-pin PLCC package  

This information is based solely on the available knowledge base for the ST78C34CJ44 microcontroller by EXAR.

Application Scenarios & Design Considerations

GENERAL PURPOSE PARALLEL PRINTER PORT WITH 83 BYTE FIFO

Alternative Part Number

  • XR68C681CP --: Dual UART with FIFO in a 40-pin DIP, functionally similar to the ST78C34CJ44 and widely available from a different vendor.
  • SC16C654BIB64 --: Quad UART with 64-byte FIFOs offering comparable serial channel functionality, though in a different package and pinout.
  • TL16C554AIPN --: Quad asynchronous communications element with FIFOs, a common replacement for multi-channel UART applications when the original XP part is unavailable.
  • XR16C850CJ44 --: Same Exar/MaxLinear UART family in a 44-pin PLCC package, widely used as a functional substitute for ST78C34 UART applications.
  • ST16C550CJ44 --: Exar ST16C550 UART in 44-pin PLCC, pin-compatible with the ST78C34 series and a common drop-in replacement.
  • TL16C550CJ44 --: TI TL16C550 UART in 44-pin PLCC, industry-standard alternative with similar register set and pinout for UART designs.

Request Quotation

For immediate assistance, call us at +86 533 2716050 or email [email protected]

Part Number Quantity Target Price($USD) Email Contact Person
We offer highly competitive channel pricing. Get in touch for details.

Specializes in hard-to-find components chips