AT89C51CC01CAT-RLTUM Supplier in Europe - Bulk & OEM Pricing 8-bit Microcontrollers - MCU

The AT89C51CC01CAT-RLTUM is an enhanced 8-bit 80C51 microcontroller with a full on-chip CAN controller, from the CANary family that Atmel introduced for CAN network nodes and Microchip Technology continues to produce today. It combines 32KB of in-system-programmable flash with 2KB of boot flash, 2KB of EEPROM and 1.2KB of RAM, and its CAN controller is fully compliant with CAN 2.0A and 2.0B, providing 15 independent message objects with identifier filtering up to 29 bits. The device ships in a VQFP44 package (10 mm x 10 mm) rated for the industrial -40 °C to +85 °C range.

Around the core sit the peripherals that made this family a workhorse for distributed control: three 16-bit timers, a five-channel 16-bit programmable counter array with 8-bit PWM, a full-duplex UART, a 21-bit watchdog and a 10-bit ADC with 8 multiplexed inputs. Maximum crystal frequency is 40 MHz (20 MHz in X2 mode), across 34 digital I/O lines on five ports. Flash and EEPROM are both rated for 100,000 erase/write cycles with 10-year data retention at 85 °C.

Decoding the ordering code: CA, T and RLTUM

The suffix carries real information. CA means the factory-programmed bootloader is the CAN bootloader (the UA variants of the same silicon boot via UART instead), which determines how the device expects to be programmed in-system out of the box. The T marks tape and reel packing for automated assembly, and RLTUM identifies the VQFP44 industrial green (lead-free) option. Specifying the wrong variant does not change the chip, but it changes the default firmware path and the packing your production line receives.

An active part that behaves like a legacy one

The AT89C51CC01 family remains in production at Microchip, but it is a design of the 2000s and the supply chain treats it that way: at the time of writing the franchised channel shows zero stock of the tape-and-reel CAT-RLTUM option, sibling codes surface through legacy-specialist marketplaces, and the original T89C51CC01 ordering codes are formally obsolete. Teams maintaining CAN nodes built on this MCU face the classic mature-part situation: the silicon exists, the shelf is empty. Our guides to sourcing obsolete electronic components and second sourcing electronic components cover how buyers keep long-life designs running when franchised availability thins out.

Typical applications

• CAN network nodes in industrial automation and distributed control systems
• Automotive and off-highway body modules designed in the 2000s and still in service
• Building automation, elevators and infrastructure equipment with decades-long lifecycles
• Sustaining production and repair of legacy 8051-based CAN designs where requalifying a modern MCU is not economical

Key specifications

• Core: Enhanced 8-bit 80C51, up to 40 MHz crystal (X2 mode 20 MHz)
• Memory: 32KB ISP flash + 2KB boot flash, 2KB EEPROM, 1.2KB RAM (256 B + 1KB XRAM)
• CAN: CAN 2.0A/2.0B compliant controller, 15 independent message objects, up to 29-bit ID filtering
• Peripherals: 3x 16-bit timers, 5-ch 16-bit PCA with PWM, full-duplex UART, 21-bit watchdog, 10-bit ADC (8 channels)
• I/O: 34 digital I/O lines on five ports
• Endurance: 100,000 erase/write cycles, 10-year retention at 85 °C
• Package: VQFP44, 10 mm x 10 mm; tape and reel (T), green
• Temperature: Industrial, -40 °C to +85 °C
• Status: Family in production at Microchip; franchised tape-and-reel stock currently at zero (legacy-tail supply)

GlobX supplies the AT89C51CC01CAT-RLTUM to OEM and EMS teams across Europe through a verified global supplier network, with ISO 9001 incoming inspection and anti-counterfeit checks, full traceability and a certificate of conformance on request. Mature parts with empty franchised shelves are precisely where counterfeit risk concentrates, so verification is part of the product. Request a quote with your quantity and date-code requirements and we will respond within 24 hours.