RL78/I1A Group microcontrollers employ the RL78 core which realizes high processing performance while delivering the lowest power consumption in their class, and realize LED control, power supply control, and communication functions on a single chip.
In addition to a high-precision (±1%) on-chip oscillator enabling 24 MHz CPU operation and other standard on-chip functions from the RL78/G13, 64 MHz timer operation and a dithering function makes PWM output of a minimum of 0.98 ns resolution possible, enabling fine-grained dimming and color toning control.
In addition, PFC control and protection functions can be implemented by hardware by linking the PWM timer with a comparator or external interrupt input.
A PGA (programmable gain amplifier) that can amplify the A/D converter input level by up to a factor of 32 supports high-precision LED current measurement. This enables finer-grained dimming and toning control and allows a smaller current measurement resistor to be used, thus contributing to reduced overall system power consumption.
For Lighting applications DALI and DMX512 interface are supported.
For power control applications PMBus and SMBus are supported.
With a 20 to 38-pin lineup, these products are suitable for LED lighting and power supply control.
Pin Count / Memory Size Lineup:
|20-pin (R5F1076xxxSP)||30-pin (R5F107AxxxSP)||38-pin (R5F107DxxxSP)|
|Timer||16-bit timer (TAU)||8 channels (no timer output)||8 channels (timer output: 1, PWM output: 1)||8 channels (timer outputs: 3, PWM outputs 3)|
|16-bit timer (KB)||2 channels (PWM outputs: 4)||3 channels (PWM outputs: 6)|
|16-bit timer (KC)||1 channel (PWM outputs: 3)||1 channel (PWM outputs: 6)|
|Real time clock (RTC)||1 channel (no output)||1 channel (1 output)|
|8/10-bit A/D converter||6 channels||11 channels|
|Comparator||4 channels||6 channels|
|Programmable gain amplifier||1 channel (Input: 4 channels)||1 channel (Input: 6 channels)|
|Serial interface||UART (Supporting LIN-bus and DMX512)||1 channel|
|UART (Supporting DALI communication)||1 channel|
|CSI/UART (Supporting LIN-bus and DMX512):||1 channel|
|Vectored interrupt sources||7 external / 27 internal||10 external / 30 internal||11 external / 30 internal|
|Operating ambient temperature||-40 to +105 ℃ (R5F107xxxGSP) / -40 to +125 ℃ (R5F107xxxMSP)|