Microcontrollers that output high-resolution PWM for fine dimming and toning of LED lighting
RL78/I1A microcontrollers realize PWM output of a minimum 0.98 ns resolution using 64 MHz timer operation and dithering function, supporting fine dimming and toning. Through cooperation between the PWM timer and comparator/external interrupt input, PFC control and protection functions can be realized by hardware. Low consumption current of 3.3 mA during LED and power supply control and 0.23 μA when waiting for UART (DALI) communication allows the power consumption of the system to be reduced. DALI/DMX512 lighting communication and Power Management Bus (PMBus) and System Management Bus (SMBus) power communication are supported. These microcontrollers can be used in LED lighting equipment and digital power supplies.
Main Solutions
Key Features:
| ITEM | RL78/I1A | |||
|---|---|---|---|---|
| Pin Count | 20-pin | 30-pin | 38-pin | |
| Part Name | R5F1076xxxSP | R5F107AxxxSP | R5F107DxxxSP | |
| I/O Port | Total | 16 | 26 | 34 |
| CMOS I/O | 13 | 23 | 29 | |
| CMOS input | 3 | 3 | 5 | |
| Timer | 16-bit timer (TAU) | 8 channels (no timer output) | 8 channels (timer output: 1, PWM output: 1) | 8 channels (timer outputs: 3, PWM outputs 3) |
| 16-bit timer (KB) | 2 channels (PWM outputs: 4) | 3 channels (PWM outputs: 6) | ||
| 16-bit timer (KC) | 1 channel (PWM outputs: 3) | 1 channel (PWM outputs: 6) | ||
| Real time clock (RTC) | 1 channel (no output) | 1 channel (1 output) | ||
| 8/10-bit A/D converter | 6 channels | 11 channels | ||
| Comparator | 4 channels | 6 channels | ||
| Programmable gain amplifier | 1 channel (Input: 4 channels) | 1 channel (Input: 7 channels) | ||
| Serial interface | UART (Supporting LIN-bus and DMX512) | 1 channel | - | |
| UART (Supporting DALI communication) | 1 channel | |||
| UART | - | 1 channel | ||
| CSI/UART (Supporting LIN-bus and DMX512): | - | - | 1 channel | |
| I2C bus | 1 channel | |||
| Vectored interrupt sources | 7 external / 27 internal | 10 external / 30 internal | 11 external / 30 internal | |
| Operating ambient temperature | -40 to +105 ℃ (R5F107xxxGSP) / -40 to +125 ℃ (R5F107xxxMSP) | |||
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). |
Hardware Design Support
| Title | Description |
|---|---|
| Characteristics data | Information on observed values. Please use this as reference data when developing your set. |
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