Handy Vacuum Cleaner Reference Design

Release on:2019-06-05

Handy Vacuum Cleaner Reference Design

Renesas’ vacuum has two operation levels of suction power and uses a battery for cordless operation

Renesas Handy Vacuum Cleaner As a part of their Quick Solutions, Renesas has created a reference design for a handy vacuum cleaner with two operating levels (high or low) for suction power. It uses a battery, meaning the device can be used without a cord. The RL78/G1F has a built-in comparator (CMP0), programmable gain amplifier (PGA), and pulse width modulation (PWM) option unit A (PWMOPA) for overcurrent detection and PWM output-force cutoff control. The motor control auxiliary timer and 4-input selectable comparator help achieve sensorless rotor position detection even when the motor is stopped or rotating at high speeds (exceeding maximum 50,000 RPM). The ISL94202 Li-Ion battery monitor IC's power management provides battery charge and discharge control, current and voltage monitoring, and battery balance control.

Features

Minimum instruction execution time: can be changed from high speed (0.03125 μs at 32 MHz operation with highspeed on-chip oscillator) to ultra-low speed (30.5 μs at 32.768 kHz operation with subsystem clock)
General-purpose registers: (8-bit register × 8) × 4 banks
ROM: 64 KB/RAM: 5.5 KB/Data Flash: 4 KB
Selectable high-speed on-chip oscillator clock: 64 MHz, 48 MHz, 32 MHz, 24 MHz, 16 MHz, 12 MHz, 8 MHz, 6 MHz, 4 MHz, 3 MHz, 2 MHz, and 1 MHz (typ.)
On-chip debug function
On-chip selectable power-on-reset (POR) circuit
On-chip voltage detector (LVD)
On-chip watchdog timer (operable with the dedicated low-speed on-chip oscillator)
On-chip key interrupt function: 6 key interrupt input pins
On-chip clock output/buzzer output controller
On-chip binary-coded decimal (BCD) correction circuit
I/O port: 44