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 ℃ | |||||
Block Diagram:
| Title | Description |
|---|---|
| My Renesas | Create a My Renesas account to use our tool download services, receive e-newsletter/update notifications, and take advantage of our other services. |
| e-learning | Information for studying and learning about microcontrollers and microprocessors. |
| FAQ | Frequently asked questions and useful hints for development. |
| Forum | A forum and community site to share technical information, questions and opinions with others who use Renesas products. |
Software Design Support
| Title | Description |
|---|---|
| CS+ | An integrated development environment that can be used for coding, assembling/compiling, and simulation. (Also included with Renesas Starter Kits.) |
| e2 studio | Renesas eclipse embedded studio, known as e² studio, is a complete development and debug environment based on the popular Eclipse CDT project. |
| E1 | A standard Renesas on-chip debugging emulator that enables users to carry out ample debugging for real development at low cost. (Also included with starter kits.) |
Disclaimer:
The information contained herein has been provided by a member of Renesas Partners. This information is provided on the Renesas website provided for convenience and informational purposes only. Renesas is not responsible for the contents of this page or any changes or updates to the information posted on this page. Certain links provided herein permit you to leave this site and enter non-Renesas sites. These linked sites are not under control of Renesas. Renesas is not responsible for the contents of any linked site or any changes or updates to such sites. These links are provided for convenience and informational purposes only. The inclusion of any link does not imply endorsement by Renesas of any linked site.
Renesas's Publication of information regarding third-party products or services does not constitute an endorsement regarding the suitability of such products or services or a warranty, representation or endorsement of such products or services either alone or in combination with any of Renesas's product or service.