Renesas DF61543J40FPV

Overview

DF61543J40FPV from Renesas Electronics is a 32-bit CISC microcontroller in the H8SX/1544 Group, featuring the H8SX CPU core with upward compatibility to H8/300H and H8S architectures. It operates at up to 40 MHz, integrates 512 KB on-chip Flash memory and 32 KB RAM, and supports multiple peripheral modules including CAN, UART, timers, and ADC - deployed in industrial control and factory automation systems.

For engineers reviewing the DF61543J40FPV datasheet, DF61543J40FPV pinout, DF61543J40FPV application, or DF61543J40FPV equivalent, key selection considerations include its 144-pin LQFP package, 3.3 V single-supply operation, CAN 2.0B compliance, 12-bit 16-channel ADC, and support for user-programmable Flash with FTDAR-based programming sequence.

Technical Context

The DF61543J40FPV implements a high-speed 32-bit H8SX CPU core with 32-bit internal data paths and 24-bit address space, supporting three operating modes (Normal, Middle, Advanced) for flexible power/performance trade-offs. It includes an on-chip PLL clock generator enabling stable 40 MHz operation from external crystal or ceramic resonator inputs.

Peripheral integration includes two CAN controllers (CAN0/CAN1), six serial interface modules (SCI0–SCI5), a 16-bit multi-function timer pulse unit (TPU), and a 12-bit analog-to-digital converter with sample-and-hold and hardware-triggered conversion sequencing - all accessible via dedicated I/O pins and configurable through memory-mapped registers.

Key Specifications

Pinout & Package

DF61543J40FPV is housed in a 144-pin LQFP (20 mm × 20 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions are defined per operating mode (Normal/Middle/Advanced) and include dedicated CANH/CANL, SCI TX/RX, TPU input capture/output compare, and ADC analog input pins.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F61544J40FPV, DF61543J40FPV offers identical performance and peripherals at lower cost and smaller Flash footprint; compared with MB9BF506R, it provides legacy H8SX code compatibility and deterministic interrupt latency but lacks native floating-point support.

Availability

DF61543J40FPV is available at Aetrix Electronics and suitable for industrial PLC I/O modules, motor drive control units, factory automation gateways, and energy metering terminals requiring stable component supply and long-term lifecycle support.

Supply support for DF61543J40FPV 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 H8SX/1544 Group, including DF61543J40FPV, was designed for deterministic real-time control in industrial automation equipment - emphasizing peripheral integration, Flash reliability, and extended temperature operation.

FAQ

What is the maximum operating frequency of the DF61543J40FPV?

The DF61543J40FPV operates at a maximum frequency of 40 MHz, achieved using its on-chip PLL with external crystal input (4–20 MHz). This frequency is fully supported across all operating modes and ensures deterministic execution timing for real-time control tasks such as motor commutation and closed-loop regulation. The DF61543J40FPV datasheet specifies timing margins for all internal buses and peripherals at this speed.

Does the DF61543J40FPV support CAN FD or only classical CAN 2.0B?

The DF61543J40FPV supports only CAN 2.0B (ISO 11898-1:2003), not CAN FD. Its two integrated CAN controllers implement full mailbox-based message handling with 64 acceptance filters per channel, bit rates up to 1 Mbps, and error confinement - sufficient for industrial fieldbus applications but lacking CAN FD's higher bandwidth and data length extensions. DF61543J40FPV does not include transceiver drivers; external ISO 11898-compliant transceivers are required.

How much user-accessible Flash memory does the DF61543J40FPV provide?

The DF61543J40FPV provides 512 KB of on-chip Flash memory, fully user-programmable via the FTDAR-controlled programming interface. This includes space for application code, bootloader, and configuration data. The DF61543J40FPV supports sector erase, byte/word programming, and read-while-write capability in designated regions - verified in Renesas Hardware Manual REJ09B0381-0300, Section 22.7.

What is the ADC resolution and channel count on the DF61543J40FPV?

The DF61543J40FPV integrates a 12-bit successive-approximation ADC with 16 analog input channels (AD00–AD15). It supports hardware-triggered conversions via TPU events, scan mode with automatic channel sequencing, and built-in sample-and-hold - enabling synchronized acquisition across multiple sensors. The DF61543J40FPV ADC achieves ±2 LSB integral nonlinearity and 1 μs conversion time per channel under typical conditions.

Is the DF61543J40FPV pin-compatible with other H8SX/1544 Group devices?

Yes, the DF61543J40FPV shares the same 144-pin LQFP package and pinout with other members of the H8SX/1544 Group, including R5F61544J40FPV and R5F61542J40FPV. Signal assignments for power, clocks, reset, CAN, SCI, TPU, and ADC are identical across these variants - allowing direct PCB reuse when migrating between Flash sizes or minor peripheral configurations. DF61543J40FPV pin compatibility is documented in Section 1.3 of the H8SX/1544 Hardware Manual.