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 |
|---|---|
| e² studio | This integrated development environment (IDE) is based on the popular combination of the open-source Eclipse IDE and its CDT plug-in that enables C/C++ language development. |
| CS+ | This integrated development environment (IDE) can be used for coding, assembly, compiling, and simulation. CS+ is also included with starter kits. |
| E2 emulator Lite | This entry-level on-chip debugging emulator provides functionality equivalent to that of the E1 emulator at a low price. |
| E2 emulator | This on-chip debugging emulator has advanced features that improve the efficiency of development. In addition to the basic functions from debugging to flash programming, this emulator supports hot plug-in and external triggers as standard items. This emulator also helps to reduce development time by downloading at high speeds (compared to the E1 emulator) and the ability to work in combination with various solutions such as the tuning of current drawn by systems under development. |
| E1 emulator | This on-chip debugging emulator is a standard model which provides basic debugging functions (production is to be discontinued at the end of December 2019). |
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