Electronic Design

Embedded: ARM MCUs Sport Analog And USB

The STR710 and STR720 microcontroller series are based on the ARM7TDMI and ARM720T processor cores, respectively. The latter sports an MMU and SDRAM interface. The 48-MHz STR710 contains up to 64 kbytes of RAM and 256 kbytes of flash. It has I2C, SPI, UART, CAN, USB, HDLC, MMC, and Smart Card interfaces, along with a 12-bit analog-to-digital converter (ADC) and 48 I/O pins. The 66-MHz STR720 lacks I2C and SPI support, but it does offer a 14-bit analog-to-digital converter and 35 I/O pins. It also has an ETM trace mode. The STR720 supplies 16 kbytes of SRAM plus an external memory interface. Both are available in −40°C to 85°C industrial temperature ranges. Prices start at $7.70.


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