RL78/D1A (Automotive Only)
Microcontrollers for automotive low-end instrument clusters with built-in features such as sound generator, stepper motor controller/driver, and segmented LCD driver
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.
Main Solutions
Key Features:
| ITEM | RL78/D1A(Autmotive Only) | |||||
|---|---|---|---|---|---|---|
| Pin Count | 48 pin | 64 pin | 80 pin | 100 pin | 128 pin | |
| Memory | Program Flash | 24 to 64 KB | 48 to 64 KB | 48 to 256 KB | 64 to 512 KB | 256 to 512 KB |
| SRAM | 2 to 4 KB | 3 to 4 KB | 3 to 16 KB | 4 to 24 KB | 16 to 24 KB | |
| Data Flash | 8 KB | |||||
| Register | General purpose register : 8-bit x 32 registers (8-bit x 8 registers x 4 banks) | |||||
| Clock | High speed system clock: 1 to 20 MHz (VDD = 2.7 - 5.5 V) | |||||
| High speed internal oscillator: 32, 24, 16, 8, 4 MHz (Ta = - 40 to +85 ℃) / 24, 16, 8, 4 MHz (Ta = -40 to +105 ℃) | ||||||
| Low speed internal oscillator: 15 kHz, Sub system clock: 32.768 kHz | ||||||
| I/O Port (I/O, In, Out) | 38 (35, 3, 0) | 54 (49, 5, 0) | 68 (63, 5, 0) | 84 (78, 5, 1) | 112 (107, 5, 1) | |
| Timer | 16-bit | 8 channels x3 units | ||||
| Real Time Clock (RTC) | 1 channel | |||||
| Interval Timer | 1 channel | |||||
| Watchdog Timer | 1 channel | |||||
| Output | 24 channels | |||||
| RTC output | 1 channel | |||||
| 10-bit A/D converter | 3 + 2 channels | 6 + 2 channels | 7 + 2 channels | 9 + 2 channels | ||
| Serial Interfaces | CSI | 2 channels | 3 channels | |||
| UART | - | 1 channel | ||||
| Simplify I2C | 1 channel | |||||
| LIN-UART | 2 channels | |||||
| CAN | 0 or 1 channel | 0 or 1 channel | 0 or 1 channel | 1 or 2 channels | 2 channels | |
| DMA controller | 2 channels | 4 channels | ||||
| Stepper motor controller / driver(with ZPD) | 1 channel | 2 channels | 4 channels | |||
| LCD controller/driver | 27 seg. x4 com. | 39 seg. x4 com. | 48 seg. x4 com. | 53 seg. x4 com. | 54 seg. x4 com. | |
| LCD bias | Static, 1 / 3 bias, 1 / 4 duty | |||||
| LCD bus interface | - | 8-bit read/write | ||||
| Sound generator | Supported | |||||
| Power supply voltage | 2.7 to 5.5 V | |||||
| Operating ambient temperature | J grade products Ta = - 40 to + 85 ℃ / L grade products Ta = - 40 to +105 ℃ | |||||
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Software Design Support
| Title | Description |
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