Low power consumption, compact LCD microcontrollers suitable for small appliances and healthcare devices
RL78/L12 microcontrollers have a built-in segment LCD driver. Three LCD driving voltage generation methods (external resistance division, capacitive split, and internal voltage boost) are supported, corresponding to a variety of segment LCD panels. They realize low current consumption (*1): external resistance division: 1.60 μA (*2), internal voltage boost: 1.19 μA, and capacitive split: 0.68 µA. With a lineup of 32 to 64-pin products supporting up to 280 segments, these microcontrollers are perfect for small devices with built-in LCD panels such as small appliances and healthcare devices.
(*1) Current (typ.) at 1/3 bias, subclock operation, HALT mode, and RTC operation
(*2) Resistance value for external resistance division = 1000 kΩ
|Memory||Program Flash||8 to 32 KB||16, 32 KB|
|Data Flash||2 KB|
|SRAM||1, 1.5 KB|
|Clock||High speed system clock||
|High speed on-chip oscillator||
|Sub system clock||-||XT1(crystal) oscillation, external system clock input（EXCLKS） 32.768 kHz(TYP.):VDD = 1.6 to 5.5 V|
|Low speed on-chip oscillator||Internal oscillation|
|15 kHz(TYP.):VDD = 1.6 to 5.5 V|
|N-ch open Drain I/O (EVDD)||2|
|Pins only for LCD drive||8||11|
|LCD controller/driver||Method||Internal voltage boosting method, capacitor split method, and external resistance division method are switchable.|
|Timer||16-bit timer||8 channels||8 channels (Remote control output 1 channel)|
|Watchdog timer||1 channel|
|Real Time Clock
|12-bit interval timer (IT)||1 channel|
|Timer output||4 (PWM:3)||5 (PWM:4)||6 (PWM:5)||8 (PWM:7)|
|RTC output||-||1 channel : 1 Hz (Sub system clock: fSUB = 32.768 kHz)|
|8/10-bit A/D converter||4 channels||7 channels||9 channels||10 channels|
|Serial interfaces||CSI 2ch/UART(LIN-Bus support)||1 channel|
|DMA controller||2 channels|
|Vector interrupt source||Internal||23|
|Other peripherals||Low voltage detection, Power-On Reset, Clock output/Buzzer function|
|On-chip debug function||Available|
|Power supply voltage||VDD = 1.6 to 5.5 V|
|Operating ambient temperature||TA = -40 to + 85 ℃ for A-Version product / -40 to + 105 ℃ for G-Version product|
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|e-learning||Information for studying and learning about microcontrollers and microprocessors.|
|FAQ||Frequently asked questions and useful hints for development.|
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Software Design Support
|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
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