ARM7 MCU with 512 KB Flash and industrial temperature range
The NXP SAC7111J1VAG50 is a 32-bit ARM7-based microcontroller with a 50 MHz core, 512 KB Flash program memory, 32K x 8 RAM, and 32K x 8 EEPROM. It carries 112 I/O lines, a CANbus interface, plus I²C, SCI, and SPI serial connectivity. The part is rated for -40°C to 105°C operation and accepts a supply from 2.35 V to 5.5 V, making it suited for industrial control, motor drives, and outdoor telecom equipment where wide temperature and voltage margins are required.
The 50 MHz ARM7 core delivers a balanced throughput for mid-complexity control loops and protocol handling. It is not a high-speed DSP replacement; for applications needing faster math throughput, a 72 MHz sibling like the MK51DX128CMC7 exists, but the SAC7111J1VAG50's 512 KB Flash and 32K x 8 EEPROM give it a memory advantage for code-heavy firmware.
On-chip memory and data converters
The 512 KB Flash and 32K x 8 EEPROM allow firmware updates and parameter storage without external memory. The 32K x 8 RAM supports moderate data buffering. An internal oscillator and a 16-channel 8/10-bit ADC cover sensor acquisition and feedback loops.