Renesas D12674RVFQ33V

Overview

D12674RVFQ33V from Renesas Electronics is a 16-bit single-chip microcontroller (MCU) in the H8S/2600 Series, featuring an H8S/2600 CPU core, 512 KB on-chip flash memory (F-ZTAT™), 32 KB RAM, 10-bit A/D converter, 8-bit D/A converter, six-channel 16-bit timer pulse unit (TPU), programmable pulse generator (PPG), serial communication interfaces (SCI/IrDA), and DMA controllers. It operates at up to 33 MHz and targets industrial control and embedded instrumentation applications.

For engineers reviewing the D12674RVFQ33V datasheet, D12674RVFQ33V pinout, D12674RVFQ33V application, or D12674RVFQ33V equivalent, key selection considerations include its 144-pin FP package, 33 MHz max clock frequency, F-ZTAT flash reprogrammability, integrated analog peripherals (A/D and D/A), and support for DRAM/SDRAM expansion via high-functionality bus controller.

Technical Context

The D12674RVFQ33V implements the H8S/2600 CPU with a 32-bit internal architecture, sixteen 16-bit general-purpose registers, and linear 16-Mbyte address space. It supports Normal and Advanced operating modes, with reset vector at address 0x000000 and boot mode selectable via MD2–MD0 pins.

Its peripheral set includes dual DMAC channels (with EXDMAC), data transfer controller (DTC), watchdog timer (WDT), 8-bit timer (TMR), and configurable I/O ports with interrupt capability on multiple pins (e.g., IRQ8–IRQ15). The TPU provides input capture, compare match, and PWM output across six independent channels.

Key Specifications

Pinout & Package

Package: 144-pin FP (Fine Pitch) plastic quad flat package (QFP), 20 mm × 20 mm body, 0.5 mm lead pitch, JEDEC MS-026 compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HD64F2676FV, D12674RVFQ33V offers double flash capacity and higher clock tolerance for complex control algorithms; versus R5F21266SDFP, it delivers superior deterministic timing, analog integration, and external memory bandwidth at the cost of higher active current.

Availability

D12674RVFQ33V is available at Aetrix Electronics and suitable for industrial automation, motor control, and test equipment requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for D12674RVFQ33V 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 headquartered in Japan, specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The H8S/2600 Series - including D12674RVFQ33V - was designed for high-performance embedded control applications demanding real-time responsiveness, integrated analog I/O, and flexible memory expansion in industrial environments.

FAQ

What is the maximum operating frequency of the D12674RVFQ33V?

The D12674RVFQ33V operates at a maximum clock frequency of 33 MHz. This rating is validated across the full industrial temperature range (−40°C to +85°C) and requires use of an 8–25 MHz crystal or external clock source as specified in the H8S/2678 Group Hardware Manual Rev. 3.00. The 33 MHz limit ensures reliable timing margin for all on-chip peripherals including the TPU, DMAC, and bus controller.

Does the D12674RVFQ33V support external SDRAM?

Yes, the D12674RVFQ33V supports external SDRAM through its high-functionality bus controller. Pin functions UCAS/DQMU, LCAS/DQML, SDRAMφ, RAS, CAS, and WE are dedicated to SDRAM interface timing. Configuration is controlled via RMTS2–RMTS0 bits and EXPE bit, enabling burst-mode access and programmable refresh cycles as documented in Section 10.15 and 10.16 of the hardware manual.

What type of flash memory does the D12674RVFQ33V use?

The D12674RVFQ33V uses Renesas' proprietary F-ZTAT™ (Flash Zero Turnaround Time) technology - a single-power, in-system reprogrammable flash memory. It allows full erase and programming at 3.3 V without high-voltage assist, with typical programming time of 10 ms per 128-byte block and guaranteed 100 write/erase cycles minimum.

How many channels does the TPU have in the D12674RVFQ33V?

The D12674RVFQ33V integrates a six-channel 16-bit Timer Pulse Unit (TPU). Each channel supports input capture, compare match, PWM output, and can trigger DMA transfers (via DTC), A/D conversion, or PPG events. Channel-specific registers (TGRA_n/TGRB_n) and independent interrupt vectors (IRQ0–IRQ5) enable concurrent, deterministic timing operations.

Is the D12674RVFQ33V pin-compatible with other H8S/267x devices?

No, the D12674RVFQ33V is not universally pin-compatible with other H8S/267x devices. While it shares the 144-pin FP package with variants like HD64F2676FV, pin functions differ significantly - e.g., P71/DREQ1/EDREQ1 behavior depends on DMACS bit setting, and SDRAM interface pins (PH1/SDRAMφ) are absent in non-R versions. Always verify pin mapping against the specific device's hardware manual.