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Sound Playback
The following page content corresponds to the products marketed in Japan.
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Overview
Sound playback, both sound effects and voice, are now built into a great many household products and industrial equipment. Sound playback has also gained popularity as an important feature for providing improved accessibility for visually impaired or elderly users. Providing sound playback in consumer products and compact industrial equipment requires very cost effective solutions giving the added functionality at minimum additional cost.
Renesas provides audio decompression software libraries that operate at high speed and with a small memory footprint. The compact and low-cost R8C Family microcontrollers, with the ability to easily generate PWM signals, without the need for special peripheral devices, allows easy addition of advanced flexible sound playback capabilities to products that previously had a simple buzzer as their only sound playback.
System Block Diagram
Recommended Products
| Block | Semiconductor device | Recommended products | Features, etc. |
|---|---|---|---|
| Control MCU | MCU | 78K0/Kx2-L | 8-bit All Flash microcontrollers; a variety of on-chip peripheral functions such as reset circuit, on-chip oscillator, and clock function; 20 MHz operation; low power consumption; 16 to 48 pins |
| 78K0R/Kx3-L | 16-bit All Flash microcontrollers, a variety of on-chip peripheral functions such as reset circuit and on-chip oscillator, high-performance CPU core, 44 to 144 pins | ||
| H8/300H Tiny Series | Standard MCU | ||
| M16C/Tiny Series | |||
| R8C Family | |||
| RL78 Family | |||
| V850 Famliy | |||
| RX Family | |||
| Signal amplifier | Op-amp. | HA1630xxx Series | For 32 W speaker/headphone output |
| Memory for large amount of sound data | EEPROM | R1EX24xxx Series | I2C bus interface *1 |
| R1EX25xxx Series | SPI bus interface *2 | ||
| General use, Surge absorption, Circuit protection, etc. | Zener diode | RKZ6.8Z4MFAKT | 5 terminals (4 devices) Low capacitance (4 pF) optimal in use for surge absorption for USB ports |
| NNCDxxDA Series | High ESD tolerance optimal for use in surge absorption | ||
| RDxxS Series | 2 terminals SMD | ||
| HZM6.2ZMWA, other | 3 terminals (2 devices) High ESD tolerance optimal for use in surge absorption | ||
| RKZxxKG/KJ Series | 2 terminals SMD High ESD tolerance optimal for use in surge absorption | ||
| Switching diode | HSC/D119, HSB2836/8 | 2-3 terminals SMD | |
| RKH0145/0160KU Series | 2 terminals SMD High voltage tolerance optimal for use in surge absorption and high-voltage rectification | ||
| Schottky diode | RKR, HRW Series | 2-3 terminals SMD Small package, low capacitance, large current type | |
| Audio | Digital amp. IC | R2A15120FA | 15 W x 2 ch: BTL (built-in limiter) |
| R2A15123FP | 4 W x 2 ch: Single end | ||
| Electronic Volume | M61545AFP/FP | 2 channels, power supply: 4.5 to 15 V, 2-wire serial interface |
*1 I2C: Inter-Integrated Circuit
*2 SPI: Serial Peripheral Interface
Related Software
| Title | Part No. |
|---|---|
| Sound playback system | M3S-S2-Tiny (free) |
| Serial EEPROM driver | No part no. (free) |
| Voice expansion using ADPCM: ADPCM-SP | No part no. (free) |
| Voice expansion using ADPCM: ADPCM-SP2 | No part no. (free) |
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