Renesas D12674RVFQ33DV

Overview

D12674RVFQ33DV 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, 16-bit TPU, 10-bit A/D converter, SCI/IrDA serial interfaces, and DMAC/EXDMAC controllers. It operates at up to 33 MHz and supports DRAM/SDRAM expansion via a high-functionality bus controller for embedded control applications requiring real-time I/O handling and deterministic timing.

For engineers reviewing the D12674RVFQ33DV datasheet, D12674RVFQ33DV pinout, D12674RVFQ33DV application, or D12674RVFQ33DV equivalent, key selection criteria include its 144-pin FP package, 33 MHz max clock frequency, F-ZTAT™ flash reprogrammability, integrated A/D and D/A converters, and support for external memory expansion with SDRAM interface capability.

Technical Context

The D12674RVFQ33DV implements the H8S/2600 CPU core with a 32-bit internal architecture, sixteen 16-bit general-purpose registers, and linear 16-Mbyte address space addressing. It integrates dual DMAC channels (A/B), EXDMAC, and DTC bus masters for efficient peripheral-to-memory data transfers without CPU intervention.

Its on-chip peripherals include a 16-bit Timer Pulse Unit (TPU) with six independent channels supporting input capture, compare match, PWM generation, and synchronization with A/D conversion or PPG triggers; a programmable pulse generator (PPG); and dual SCI modules with IrDA support and smart card interface mode.

Key Specifications

Pinout & Package

This device uses a 144-pin Fine Pitch Plastic Quad Flat Package (FP-144H), measuring 20 mm × 20 mm with 0.5 mm lead pitch and exposed thermal pad. The package supports standard surface-mount reflow assembly and provides full signal access for memory expansion, I/O, and peripheral interfacing.

Key Features

Applications

Equivalent & Alternatives

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

Compared with D12674RVFQ33DV, R5F21267KSP offers reduced memory and no SDRAM support but lower cost and pin count, while HD64F2676F25 trades flash flexibility for mask-ROM reliability and lower price at scale - both require careful evaluation of memory, timing, and upgrade requirements before substitution.

Availability

D12674RVFQ33DV is available at Aetrix Electronics and suitable for industrial PLC I/O modules, motor drive control units, medical diagnostic instruments, and test & measurement equipment requiring stable component supply across extended product lifecycles.

Supply support for D12674RVFQ33DV 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 manufacturer headquartered in Japan, specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The H8S/2600 Series, including D12674RVFQ33DV, was designed for deterministic real-time embedded control in resource-constrained industrial systems - emphasizing integrated peripherals, memory flexibility, and robust external bus capability.

FAQ

What is the maximum operating frequency of the D12674RVFQ33DV?

The D12674RVFQ33DV operates at a maximum clock frequency of 33 MHz. This rating is validated under specified supply voltage (3.3 V ±0.3 V) and ambient temperature (–20°C to +75°C) conditions per the H8S/2678 Group Hardware Manual Rev. 3.00. The 33 MHz limit applies to both internal CPU execution and peripheral timing, and exceeding it may result in undefined behavior or timing violations in the TPU, A/D, or bus controller modules.

Does the D12674RVFQ33DV support external SDRAM?

Yes, the D12674RVFQ33DV includes a dedicated SDRAM controller supporting standard x16 SDRAM devices with configurable row/column address timing, refresh intervals, and burst lengths. The controller interfaces via dedicated RAS, CAS, WE, and DQ pins and is documented in Section 10.15 ("SDRAM Interface") of the H8S/2678 Group Hardware Manual. No external logic is required for basic SDRAM operation.

What type of flash memory does the D12674RVFQ33DV use?

The D12674RVFQ33DV uses Renesas' proprietary F-ZTAT™ (Flash – Zero Turn Around Time) technology - a single-power 512 KB on-chip flash memory that supports in-system programming with typical erase times of 50–1000 ms per 128-byte sector and 100 guaranteed reprogramming cycles. Its architecture enables fast firmware updates without high-voltage programming supplies.

How many interrupt sources does the D12674RVFQ33DV support?

The D12674RVFQ33DV supports 16 dedicated IRQ inputs (IRQ0 through IRQ15), each with individually maskable enable bits and priority encoding. In addition, it features internal interrupt sources from peripherals including TPU compare matches, A/D conversion completion, SCI transmission/reception, and WDT overflow - totaling over 100 vectorable interrupt requests as defined in the interrupt vector table (Section 22).

Is the D12674RVFQ33DV pin-compatible with other H8S/2600 series MCUs?

No, the D12674RVFQ33DV is not universally pin-compatible with other H8S/2600 series MCUs. While it shares the FP-144H package footprint with variants like HD64F2676, pin functions differ significantly due to variations in peripheral inclusion (e.g., SDRAM controller signals) and register-controlled multiplexing. Pin mapping must be verified against the specific device's "Pin Functions" table (Section 1.3.3) before board reuse.