Microcontrollers for brushless DC motor with built-in comparator for stopping rotation when abnormality detected, PGA, and 8-bit D/A converter.
RL78/G1G microcontrollers have a three-phase complementary PWM timer for brushless DC motor control, a comparator for stopping motor rotation when overcurrent is detected and its 8-bit D/A converter for reference voltage, and a PGA (Programmable Gain Amplifier) for controlling amplification factor by software. The number of components can be reduced. The comparator is over eight times faster than that of previous products, and high-speed overcurrent detection can be performed. Built-in safety features (functions that detect illegal hardware operation) make it possible to satisfy the European home appliance safety standard (IEC 60730). The 0.8-mm pitch QFP lineup also helps reduce solder mounting expenses.
|Program Flash||8 KB to 16 KB|
|Main System Clock||High-speed system clock||X1 (crystal/ceramic) oscillation, external main system clock input (EXCLK)
1 to 20 MHz: VDD = 2.7 to 5.5 V
|High-speed on-chip oscillator clock||1 to 24 MHz (VDD = 2.7 to 5.5 V)|
|Low-speed on-chip oscillator clock||15 kHz (TYP.): VDD = 2.7 to 5.5 V|
|Timer||16-bit timer||TAU||4 channels, PWM output x 3|
|Timer RJ||1 channel|
|Timer RD||2 channels, PWM output x 6|
|Watchdog timer||1 channel|
|12-bit interval timer||1 channel|
|Timer output||Timer outputs: 14 channels, PWM outputs: 9 channels|
|Clock output/buzzer output||2 (2.44 kHz, 4.88 kHz, 9.77 kHz, 1.25 MHz, 2.5 MHz, 5 MHz, 10 MHz (Main system clock : fMAIN = 20 MHz operation))|
|8/10-bit resolution A/D converter||8 channels||12 channels|
|Serial interface||CSI: 1 channel/UART0: 1 channel/simplified I2C: 1 channel UART1: 1 channel|
|Event link controller (ELC)||Event input: 18
Event trigger output: 6
|Event input: 19
Event trigger output: 6
|Power-on-reset circuit||Power-on-reset: 1.51 ±0.03 V, Power-down-reset: 1.50 ±0.03 V|
|Voltage detector||2.75 V to 4.06 V (6 stages)|
|On-chip debug function||Provided|
|Power supply voltage||VDD = 2.7 to 5.5 V|
|Operating ambient temperature||TA = -40 to +85°C|
|Current consumption||STOP mode : 240 nA
HALT mode : 145 uA (LS mode) @ 8MHz, 3V
RUN : 3.9mA @ 24MHz, 3V
You can find an explanation of orderable part numbers here.
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