Renesas DF2377RVFQ33V

Overview

DF2377RVFQ33V from Renesas Electronics is a 16-bit single-chip microcontroller in the H8S/2377R Group, featuring an H8S/2000 CPU core, 512 KB on-chip flash ROM, 32 KB RAM, and integrated peripherals including TPU, PPG, SCI, IrDA, 10-bit ADC, 8-bit DAC, WDT, and DTC. It operates at up to 33 MHz and supports expanded memory mode with external DRAM interface for industrial control and embedded instrumentation applications.

For engineers reviewing the DF2377RVFQ33V datasheet, DF2377RVFQ33V pinout, DF2377RVFQ33V application, or DF2377RVFQ33V equivalent, key selection criteria include its 33 MHz max clock frequency, 512 KB flash with F-ZTAT reprogrammability, 10-bit ADC resolution, dual DMA controllers (DMAC/EXDMAC), and support for I²C bus interface (IIC2) as optional peripheral.

Technical Context

The DF2377RVFQ33V implements the H8S/2000 CPU core with a 32-bit internal architecture and 16-Mbyte linear address space. It integrates two independent DMA controllers - standard DMAC and enhanced EXDMAC - enabling high-speed data transfers between external memory and peripherals without CPU intervention.

Its memory subsystem supports multiple operating modes including user boot mode (Mode 5), expanded mode with on-chip ROM enabled (Mode 4), and single-chip activation expanded mode (Mode 7). The device provides configurable I/O ports (PA–PH) with programmable direction registers and supports external synchronous DRAM via dedicated bus controller with RAS/CAS timing control.

Key Specifications

Pinout & Package

DF2377RVFQ33V is housed in a 128-pin LQFP package (14 mm × 20 mm, 0.5 mm pitch) with dedicated power/ground pairs, configurable I/O ports (PA–PH), and bus interface signals including address (A0–A23), data (D0–D15), and control lines (CSn, RD, WR, RAS, CAS).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit microcontroller applications.

Compared with HD64F2377R, DF2377RVFQ33V is the actively distributed commercial variant; compared with H8S/2378R, it trades 480 KB less flash and 16 KB less RAM for lower unit cost and identical peripheral functionality in memory-constrained applications.

Availability

DF2377RVFQ33V is available at Aetrix Electronics and suitable for industrial automation, test equipment, and embedded HMI applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.

Supply support for DF2377RVFQ33V 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 Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The H8S/2377R Group, including DF2377RVFQ33V, was designed for cost-sensitive, high-reliability embedded control applications demanding integrated analog peripherals, flexible memory expansion, and deterministic real-time performance.

FAQ

What is the maximum operating frequency of the DF2377RVFQ33V microcontroller?

The DF2377RVFQ33V operates at a maximum clock frequency of 33 MHz. This speed is achieved using an internal PLL that multiplies an external crystal or clock input. The 33 MHz rating applies across the full industrial temperature range (−40°C to +85°C) when supplied with 3.3 V ±10%, as specified in the Renesas H8S/2378 Group hardware manual. DF2377RVFQ33V maintains timing compliance for all on-chip peripherals-including TPU, ADC, and SCI-at this frequency.

Does the DF2377RVFQ33V include on-chip flash memory, and is it reprogrammable?

Yes, the DF2377RVFQ33V integrates 512 KB of on-chip flash memory implemented with Renesas' F-ZTAT technology. This allows full in-system reprogramming without UV erasure or device removal. Field firmware updates can be performed via SCI or on-chip debug interface, and the flash supports sector erase and byte-programming operations. DF2377RVFQ33V's flash endurance exceeds 10,000 write/erase cycles with data retention of 20 years at 85°C.

What analog peripherals are integrated into the DF2377RVFQ33V?

The DF2377RVFQ33V includes a 10-bit successive-approximation ADC with 8 input channels and a sample-and-hold circuit, plus two independent 8-bit DAC channels. These analog resources operate independently of the CPU core and support programmable conversion triggers (e.g., from TPU or timer overflow). The ADC achieves ±1 LSB INL and supports scan mode for automated multi-channel acquisition - critical for sensor interfacing in DF2377RVFQ33V-based control systems.

How does the DF2377RVFQ33V support external memory expansion?

The DF2377RVFQ33V provides a full 24-bit address bus (A0–A23), 16-bit data bus (D0–D15), and dedicated control signals (RD, WR, CS2, CS3, RAS, CAS) to interface directly with external SRAM, flash, and synchronous DRAM. Its high-function bus controller supports programmable wait states and DRAM refresh cycles. In Mode 4 or Mode 7, DF2377RVFQ33V maps external memory into its linear address space, enabling seamless access without software translation.

Is the DF2377RVFQ33V pin-compatible with other devices in the H8S/237xR family?

Yes, the DF2377RVFQ33V is pin-compatible with the H8S/2378R and H8S/2375R within the same 128-pin LQFP package footprint. Shared pin functions include address/data buses, control signals, and peripheral I/O mappings. However, differences exist in on-chip memory size and certain peripheral configurations - for example, H8S/2378R offers 1 MB flash versus DF2377RVFQ33V's 512 KB. Pin compatibility allows migration paths but requires validation of memory map and register initialization sequences.