AT89LS52-16PC Equivalent & Substitute Parts

Part Overview

The AT89LS52-16PC is an 8-bit microcontroller based on the 8051 core architecture, manufactured by Microchip Technology. This device integrates 8KB of FLASH program memory, 256 bytes of RAM, and 32 I/O pins in a 40-DIP package. The part operates at 16MHz with a supply voltage range of 2.7V to 4V and includes integrated UART/USART connectivity and watchdog timer (WDT) peripherals.

The AT89LS52-16PC is classified as obsolete. Locating equivalent substitute parts is necessary to support legacy system maintenance, design updates, and continued production of equipment utilizing this microcontroller.

Substiute Parts

AT89LS52-16PC

Microchip TechnologyIn Stock: 1015AT89LS52-16PC Datasheet

Current PartRFQ

AT89LS52-16PU

AtmelIn Stock: 1288AT89LS52-16PU Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AT89LS52-16PC is determined by strict equivalence across the following critical parameters:

• Core Processor Architecture: 8051 core
• Core Size: 8-Bit
• Clock Speed: 16MHz
• Program Memory: 8KB FLASH
• RAM Capacity: 256 x 8 bytes
• I/O Pin Count: 32 pins
• Supply Voltage Range: 2.7V ~ 4V
• Package Type: 40-DIP through-hole
• Connectivity Interface: UART/USART
• Integrated Peripherals: Watchdog Timer (WDT)

The AT89LS52-16PU meets all substitution criteria. Both parts share identical core architecture, memory configuration, I/O capability, and package form factor. The primary difference is product status and operating temperature range, which do not affect functional substitution in applications designed for the AT89LS52-16PC.

Parameter Comparison

Engineering Selection Recommendations

The AT89LS52-16PU is a direct functional substitute for the AT89LS52-16PC. Both devices are manufactured to the same 8051 core specification with identical memory, I/O, and peripheral configurations. The AT89LS52-16PU maintains active product status, ensuring continued availability and supply chain support.

The AT89LS52-16PU features an extended operating temperature range (-40°C to 85°C) compared to the AT89LS52-16PC (0°C to 70°C). This extended range provides additional thermal margin for applications operating in wider environmental conditions. For applications constrained to the original 0°C to 70°C range, this difference does not impact selection.

Both parts are RoHS non-compliant and share identical ECCN and HTSUS classifications. Pin-for-pin compatibility and identical package geometry ensure direct PCB-level substitution without layout modification.

Frequently Asked Questions (FAQ)

Q: Can the AT89LS52-16PU replace the AT89LS52-16PC in existing designs?

A: Yes. The AT89LS52-16PU is a direct substitute. Both devices share identical core architecture, memory configuration, I/O count, package type, and electrical specifications. No design changes are required.

Q: What is the difference between the AT89LS52-16PC and AT89LS52-16PU?

A: The primary differences are manufacturer (Microchip Technology vs. Atmel) and operating temperature range. The AT89LS52-16PU operates from -40°C to 85°C, while the AT89LS52-16PC operates from 0°C to 70°C. The AT89LS52-16PU maintains active product status.

Q: Are there any package compatibility concerns?

A: No. Both parts use the 40-DIP package with identical pin spacing (0.600", 15.24mm). Direct socket substitution is possible without PCB modification.

Q: Do the supply voltage specifications differ?

A: No. Both parts operate within the 2.7V to 4V supply voltage range. Power supply design remains unchanged.

Q: Is the AT89LS52-16PU suitable for extended temperature applications?

A: The AT89LS52-16PU supports operation from -40°C to 85°C, providing wider thermal coverage than the AT89LS52-16PC. Applications requiring operation below 0°C or above 70°C should use the AT89LS52-16PU.