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HMS99C58S from HYNIX

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HMS99C58S

Manufacturer: HYNIX

8-BIT SINGLE-CHIP MICROCONTROLLERS WITH EMBEDDED FLASH
Partnumber Manufacturer Quantity Availability
HMS99C58S HYNIX 710 In Stock

Description and Introduction

8-BIT SINGLE-CHIP MICROCONTROLLERS WITH EMBEDDED FLASH The part **HMS99C58S** is a **CMOS single-chip microcontroller** manufactured by **Samsung**.  

### **Key Specifications:**  
- **Architecture:** 8-bit  
- **Core:** 8051-compatible  
- **Clock Speed:** Up to **40 MHz**  
- **Program Memory (ROM):** **32 KB** (mask ROM)  
- **Data Memory (RAM):** **256 bytes** (internal) + **1 KB** (external)  
- **I/O Ports:** **32 pins** (4 ports × 8 bits)  
- **Timers/Counters:** **3** (16-bit)  
- **Serial Communication:** **UART** (full-duplex)  
- **Interrupts:** **6 sources** (2 external, 3 timer-based, 1 serial)  
- **Power Supply:** **4.5V–5.5V** (operating voltage)  
- **Package:** **PLCC-44** (Plastic Leaded Chip Carrier)  

This microcontroller was commonly used in **industrial control systems, consumer electronics, and embedded applications** during its production period.  

*(Note: This part may be obsolete; verify availability with distributors.)*

Application Scenarios & Design Considerations

8-BIT SINGLE-CHIP MICROCONTROLLERS WITH EMBEDDED FLASH

Alternative Part Number

  • AS7C4096A-15JCN --: SRAM-compatible alternative from a different series, widely used as a drop-in replacement for legacy Hynix SRAM parts with similar speed and package.
  • IS61LV25616AL-10TLI --: Low-power SRAM from ISSI with comparable density and timing, suitable as a functional substitute when the original Hynix part is unavailable.
  • CY7C1041DV33-10ZSXI --: Industrial-grade SRAM with similar organization and access time, offering a reliable cross from the Hynix legacy series.
  • DS89C450 --: High-speed 8051-compatible microcontroller with similar architecture and pinout, often used as a drop-in upgrade for 8051-family parts like the HMS99C58S.
  • AT89C51 --: Classic 8051-compatible microcontroller with comparable core, memory, and I/O features, widely available and well documented as a functional substitute.
  • W77E58 --: Enhanced 8051-core microcontroller with similar peripheral set and memory size, suitable as an alternative when the original HMS99C58S is unavailable.

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