Obsolete — sourcing through independent channels
16 KB Flash, 2 KB RAM — firmware budget check
Program memory is 16 KB Flash, with 2 KB of SRAM. That is enough for a bootloader plus a modest application — say, a temperature logger with I²C sensor reads and UART output. If your firmware needs a USB stack, a full TCP/IP stack, or over-the-air update logic, you will run out of Flash. Plan the memory map before committing the BOM line.
Industrial temperature range — deployment envelope
Rated for -40°C to 85°C ambient, this MCU fits factory-floor controllers, outdoor telecom cabinets, and automotive cabin modules. Not rated for under-hood or downhole environments where the junction temperature exceeds 85°C. The internal oscillator keeps the clock stable across the full range, eliminating an external crystal in many designs.
Peripherals and connectivity
On-chip peripherals include brown-out detect, POR, PWM, WDT, and DMA. Communication interfaces cover I²C, SPI, UART, IrDA, and SCI — enough for most sensor and actuator links. 29 general-purpose I/O lines are available in the 38-TSSOP package.