Renesas R5F107DEGSP#V0

Overview

R5F107DEGSP#V0 from Renesas is an RL78/L1A-series 16-bit microcontroller with integrated LCD controller/driver, 12-bit A/D and D/A converters, three operational amplifiers (two with analog MUX), internal voltage reference, and real-time clock 2. It operates from 1.8 V to 3.6 V, delivers 33 DMIPS at 24 MHz, and achieves ultra-low power consumption down to 70.8 μA/MHz and 0.68 μA in Halt mode-designed specifically for battery-powered LCD-based consumer devices such as smart meters, thermostats, and portable medical displays.

For engineers reviewing the R5F107DEGSP#V0 datasheet, R5F107DEGSP#V0 pinout, R5F107DEGSP#V0 application, or R5F107DEGSP#V0 equivalent, key selection criteria include its 48 KB flash/8 KB data flash memory configuration, 80-pin LFQFP package with 59 I/Os, dual 12-bit analog converters with internal reference, and integrated LCD driver supporting up to 32 segments and 4 commons-critical for space-constrained, low-power human-interface applications.

Technical Context

The R5F107DEGSP#V0 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and selectable instruction execution time (0.04167 μs at 24 MHz high-speed on-chip oscillator or 30.5 μs at 32.768 kHz subsystem clock). It integrates a 12-bit interval timer, watchdog timer, and real-time clock 2 with calendar function and alarm support.

Its analog subsystem includes a 12-bit A/D converter with 10 input channels (including internal ½ AVDD), a 12-bit D/A converter with two outputs (0.35 V to AVDD – 0.47 V), and a programmable voltage reference (1.5 V / 1.8 V / 2.048 V / 2.5 V) usable for both converters. The LCD controller supports internal voltage boosting, capacitor split, and external resistance division methods.

Key Specifications

Pinout & Package

Package: 80-pin plastic LFQFP (12 × 12 mm, 0.5 mm pitch), RoHS-compliant, consumer-grade (TA = −40 to +85°C).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with R5F107DEGSP#V0, R5F11MMEAFB removes LCD integration to reduce cost and die size, while R5F107LEGLF#V0 increases flash capacity and extends temperature range-neither is pin-compatible, but both share identical peripheral register mapping and toolchain support.

Availability

R5F107DEGSP#V0 is available at Aetrix Electronics and suitable for smart energy meters, programmable thermostats, and portable medical monitors requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant manufacturing.

Supply support for R5F107DEGSP#V0 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/L1A product line targets ultra-low-power LCD-based consumer electronics, integrating mixed-signal peripherals-including LCD drivers, analog converters, and op-amps-to minimize external components and PCB area.

FAQ

What is the maximum operating frequency and instruction throughput of the R5F107DEGSP#V0?

The R5F107DEGSP#V0 achieves a maximum operating frequency of 24 MHz using its high-speed on-chip oscillator, delivering 33 DMIPS performance. Its minimum instruction execution time is 0.04167 μs under this condition. The RL78 CPU core supports variable clock scaling down to 32.768 kHz for ultra-low-power operation, with corresponding instruction timing adjusted accordingly.

Does the R5F107DEGSP#V0 support external crystal oscillators, and what are the valid frequency ranges?

Yes, the R5F107DEGSP#V0 supports external crystals on X1/X2 (main system clock) and XT1/XT2 (subsystem clock). X1 accepts 1–20 MHz crystals depending on VDD (e.g., 1–16 MHz at 2.4–3.6 V), while XT1 supports 32.768 kHz crystals for RTC2 operation. Both require proper load capacitance and startup stabilization handled via the OSTC register.

How many analog input channels does the R5F107DEGSP#V0's 12-bit A/D converter support, and are internal references available?

The R5F107DEGSP#V0 features a 12-bit A/D converter with 10 analog input channels (ANI00–ANI09), including a dedicated channel for internal ½ AVDD monitoring. It uses an internal reference voltage (TYP. 1.45 V) and supports external reference inputs. The voltage reference module also provides selectable outputs (1.5 V / 1.8 V / 2.048 V / 2.5 V) usable for both A/D and D/A conversion.

Can the R5F107DEGSP#V0 drive a 4-common, 32-segment LCD directly, and what voltage generation methods are supported?

Yes, the R5F107DEGSP#V0's integrated LCD controller/driver supports exactly 32 segment outputs and 4 common outputs. It offers three configurable voltage generation methods: internal voltage boosting (for higher contrast), capacitor split (for medium power), and external resistance division (for lowest power). VL1–VL4 and CAPL/CAPH pins must be externally configured per selected method.

What debug and programming interfaces are available on the R5F107DEGSP#V0, and are there any usage restrictions?

The R5F107DEGSP#V0 includes an on-chip debug interface accessible via TOOLRxD/TOOLTxD pins, supporting flash programming and real-time debugging. However, Renesas explicitly cautions against using this function in mass-produced products due to finite flash rewrite endurance-reliability cannot be guaranteed if debug features exceed specified rewrite cycles. Production firmware should use standard ISP via UART or dedicated programmer tools.