Renesas R5F10377ANA#65

Overview

R5F10377ANA#65 from Renesas Electronics is a 24-pin HWQFN-packaged RL78/G12 16-bit microcontroller designed for ultra-low-power embedded control in consumer-grade applications (–40°C to +85°C). It features 2 KB code flash, 256 B RAM, 10-bit 8-channel ADC, 4-channel 16-bit timer, and single UART interface - enabling compact sensor nodes, battery-powered remote controls, and smart home peripherals.

For engineers reviewing the R5F10377ANA#65 datasheet, R5F10377ANA#65 pinout, R5F10377ANA#65 application, or R5F10377ANA#65 equivalent, key selection criteria include its 24-pin HWQFN-0.5 mm pitch package, absence of data flash memory, limited serial interface count (1 UART only), and ±5.0% high-speed on-chip oscillator accuracy over –40°C to +85°C.

Technical Context

The R5F10377ANA#65 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, delivering 31 DMIPS at 24 MHz while consuming just 63 μA/MHz. Its peripheral set excludes DMA, CRC, safety guards, and simplified I²C - distinguishing it from R5F102-series variants.

It operates across 1.8 V to 5.5 V supply, supports HALT/STOP/SNOOZE low-power modes, and integrates a 15 kHz low-speed on-chip oscillator for watchdog and interval timing - all without data flash or background operation capability.

Key Specifications

Pinout & Package

Package: HWQFN-24, 4 × 4 mm, 0.5 mm pitch, exposed die pad (to be connected to VSS).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10277ANA#65, the R5F10377ANA#65 omits data flash and safety features to reduce cost and power; versus R5F10378ANA#65, it trades flash capacity for lower unit price in resource-constrained applications.

Availability

R5F10377ANA#65 is available at Aetrix Electronics and suitable for smart remote controls, white goods sensor nodes, LED lighting drivers, and industrial panel indicators requiring stable component supply and long-term manufacturability.

Supply support for R5F10377ANA#65 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, and power solutions for automotive, industrial, and IoT markets.

The RL78/G12 product line targets cost-sensitive, ultra-low-power general-purpose embedded control - emphasizing energy efficiency, small footprint, and rapid time-to-market for consumer and industrial edge devices.

FAQ

What is the maximum operating frequency of the R5F10377ANA#65?

The R5F10377ANA#65 supports a maximum operating frequency of 24 MHz using its high-speed on-chip oscillator. This delivers 31 DMIPS performance while maintaining ultra-low power consumption of 63 μA/MHz. External crystal operation is supported up to 20 MHz in HS mode, with full functionality across the 1.8 V to 5.5 V supply range. The R5F10377ANA#65 does not require an external clock source for basic operation.

Does the R5F10377ANA#65 include data flash memory?

No, the R5F10377ANA#65 does not include data flash memory. As confirmed in Renesas documentation, R5F103-series devices omit the 2 KB data flash present in R5F102-series counterparts. This means the R5F10377ANA#65 cannot perform background data rewriting or store non-volatile configuration parameters independently - firmware must rely on code flash emulation or external EEPROM if persistent data storage is required.

What serial interfaces are available on the R5F10377ANA#65?

The R5F10377ANA#65 provides exactly one UART channel (UART0), with no integrated CSI, simplified I²C, or standard I²C interfaces. While pins P10–P12 and P60–P61 support SCL/SDA alternate functions, these are not functional on R5F10377ANA#65 per the RL78/G12 datasheet's peripheral mapping. Engineers must implement any additional serial protocols in software or add external bridge ICs when multi-interface connectivity is needed.

What is the oscillator accuracy specification for the R5F10377ANA#65?

The high-speed on-chip oscillator in the R5F10377ANA#65 has a frequency accuracy of ±5.0% over the full operating temperature range of –40°C to +85°C. This is less precise than the ±1.0% accuracy offered by R5F102-series devices but remains adequate for non-critical timing applications such as IR remote encoding, LED dimming, or basic UART communication at common baud rates like 9600 or 115200 bps.

Which package type does the R5F10377ANA#65 use?

The R5F10377ANA#65 uses a 24-pin HWQFN package (4 mm × 4 mm, 0.5 mm pitch) with an exposed die pad. This package is designated by the "NA" suffix in the part number and is supplied in trays (#65). The exposed pad must be soldered to the PCB ground plane for thermal and electrical performance. Pin compatibility is maintained across all R5F1037x NA variants, enabling drop-in replacement within the same memory configuration group.