ARM7TDMI-S at 50 MHz — what the core means for your control loop
The MAC7131VVF50R2 is a 32-bit ARM7TDMI-S microcontroller from the MAC71xx family, clocked at 50 MHz with 512 KB of Flash program memory and 32K x 8 of both RAM and EEPROM. It carries 128 general-purpose I/O lines and a full set of peripherals: DMA, POR, CANbus, external bus interface (EBI/EMI), I²C, SCI, and SPI. The part is rated for the industrial temperature range of -40°C to 105°C, making it suitable for motor drives, industrial controllers, and outdoor telecom equipment where ambient temperatures push beyond commercial limits.
Industrial temperature range and supply voltage — fit for harsh environments
The -40°C to 105°C operating range qualifies this MCU for applications that see thermal cycling — engine-bay modules, outdoor base stations, or factory-floor PLCs. The supply voltage is 2.35 V to 2.75 V.
Memory and peripherals — what the 512 KB Flash and 32K x 8 EEPROM enable
With 512 KB of Flash and 32K x 8 of EEPROM, this part can hold a moderate-sized application plus non-volatile calibration or configuration data without an external serial EEPROM. The 32K x 8 RAM is adequate for data buffers and stack, but heavy use of the CAN or EBI may require careful memory budgeting. The integrated DMA controller offloads data transfers from the CPU, which helps at 50 MHz when handling multiple communication channels simultaneously.
Lifecycle and sourcing — active production, no LTB risk
The part is RoHS non-compliant — verify your exemption or accept the lead-bearing finish if your application allows it. For BOM planning, this is a stable line without imminent obsolescence risk.