Renesas Electronics has introduced the RL78/G1A group of microcontrollers. The 16bit microcontrollers integrate enhanced analogue functionality such as an accurate 12bit ADC with power-efficient technology and deliver good processing performance. The application includes industrial automation sensors, white goods, home automation and medical applications.
The microcontroller is equipped with the high digital nonlinear accelerator of the 78K and low system power consumption. It has an independent power supply for internal analogue parts that reduces noise influence from digital peripheral lines. It also supports a maximum of 28-channel analogue inputs for sensor applications.
In addition to its 66µA/MHz current consumption in active mode, and 0.57µA with real-time clock + low voltage detector active, the microcontrollers support a low-power mode called the snooze mode. The snooze mode supports A/D conversion and serial communication while the CPU is in standby mode, which extends the life of battery-operated devices, says the company.
The microcontrollers support 3x3mm land grid array and 4x4mm ball grid array packages. It is claimed to incorporate a number of built-in mechanisms that can be utilised to comply with standard safety regulations, such as IEC60730, which are required for electrical appliances. Such features include a flash memory cyclic redundancy check function, RAM parity error checking, clock fail and frequency detection circuit, A/D test function and illegal memory access detection.
