Features
- CPU: RL78 core, Max. 32MHz
- Voltage: 2.7V to 5.5V
- Package: 48 to 128-pin LFQFP
- Memory: SRAM Max. 24KB, Program Flash Max. 512KB
- Timer: 16-bit Timer (ch) x 24, Watchdog Timer (ch) x 1, Interval Timer x 1 ch, Wakeup Timer x 1ch
- PWM: PWM Output x 21
- Analog function: 10-bit A/D Converter (ch) x 9
- On-chip Oscillator Freq. (MHz): 32M, 24M, 16M, 12M, 8M, 4M Low-speed Oscillator 15kHz
- Others: PLL, RTC, Power-On Reset, Low Voltage Detection
Description
RL78/D1A microcontrollers have a built-in sound generator which can set a volume level and tone frequency of 100 Hz to 6 kHz and has an automatic volume decrement function, up to four channels of stepper motor controller/driver which can set an 8-bit precision (pseudo 9-bit precision using a 1-bit addition function) pulse width (PWM output), and an LCD controller/driver which supports up to 216 segments. The 128-pin version has a built-in LCD bus interface and two channels of CAN, and expanded flash memory/RAM up to a maximum of 512 KB/24 KB, making these microcontrollers ideal for low-end instrument cluster.
Parameters
| Attributes | Value |
|---|---|
| Program Memory (KB) | 24, 32, 48, 64, 96, 128, 256, 384, 512 |
| Data Flash (KB) | 8 |
| RAM (KB) | 2, 3, 4, 6, 8, 16, 20, 24 |
| Carrier Type | Full Carton (Tray), Tape & Reel |
| Supply Voltage (V) | 2.7 - 5.5 |
| I/O Ports | 38, 54, 68, 84, 112 |
| Temp. Range (°C) | Ta = -40 to +85, Ta = -40 to +105 |
| Operating Freq (Max) (MHz) | 24, 32 |
| USB FS (host ch/device ch) | ( 0 / 0 ) |
| SCI or UART (ch) | 1, 2, 3 |
| SPI (ch) | 2, 3 |
| I2C (#) | 1 |
| CAN (ch) | 0, 1, 2 |
| CAN-FD (ch) | 0 |
| Wireless | No |
| LIN (#) | 1, 2 |
| 16-Bit Timer (ch) (#) | 24 |
| 12-Bit A/D Converter (ch) | 0 |
| 10-Bit A/D Converter (ch) | 5, 8, 9, 11 |
| 24-Bit Sigma-Delta A/D Converter (ch) | 0 |
| 12-Bit D/A Converter (ch) | 0 |
| 10-Bit D/A Converter (ch) (#) | 0 |
| 8-Bit D/A Converter (ch) | 0 |
| Capacitive Touch Sensing Unit (ch) | 0 |
| Segment LCD Controller | Yes |
| Security & Encryption | No |
Application Block Diagrams
 | Low-Cost Smart Instrument Cluster Low-cost smart instrument cluster with single-chip design for efficient, custom LCD bike and vehicle displays. |
Additional Applications
- Instrument Cluster