M2M MCU With 32-Bit ARM Cortex M3 CPU And 256 Kbyte High-Density Flash Memory

15kV ESD protected 3 to 5.5V, 400kbps, RS-232 transceiver with auto power-down
![15KV ESD PROTECTED, 3 TO 5.5 V LOW POWER UP TO 250KBPS, RS232 DRIVERS AND RECEIVERS,[-40oC, 85oC] TEMPERATURE RANGE](https://static.datasheets.com/image/24047119-stmicroelectronics-st3232ebpr-image.jpg)
15KV ESD PROTECTED, 3 TO 5.5 V LOW POWER UP TO 250KBPS, RS232 DRIVERS AND RECEIVERS,[-40oC, 85oC] TEMPERATURE RANGE