Renesas HD64F3664FPV

Overview

HD64F3664FPV from Renesas Electronics is a 16-bit single-chip microcomputer in the H8/300H Tiny Series, featuring an H8/300H CPU core with H8/300 instruction set compatibility, 64 KB on-chip ROM, 4 KB RAM, and integrated peripherals including UART, timer/counters, and I/O ports. It operates at up to 20 MHz and targets embedded control in industrial equipment and consumer electronics.

For engineers reviewing the HD64F3664FPV datasheet, HD64F3664FPV pinout, HD64F3664FPV application, or HD64F3664FPV equivalent, key selection criteria include its 100-pin PQFP package, 5 V operation, on-chip flash programming capability, and support for low-power sleep/standby modes in resource-constrained systems.

Technical Context

The HD64F3664FPV implements the H8/300H CPU architecture with 24-bit addressing, supporting both byte- and word-aligned memory access. Its system clock generator accepts external crystal (up to 20 MHz), ceramic resonator, or external clock input, and includes subclock circuitry for 32.768 kHz RTC support.

On-chip peripherals include two asynchronous serial interfaces (UART), three 16-bit timer/counters with capture/compare functionality, a watchdog timer, and 80 general-purpose I/O pins configurable as input, output, or peripheral function. Power management supports Sleep, Standby, Subsleep, and Subactive modes with register-retention and wake-up interrupt capability.

Key Specifications

Pinout & Package

HD64F3664FPV is housed in a 100-pin PQFP (Plastic Quad Flat Package) with 0.65 mm lead pitch, designed for automated SMT assembly and thermal reliability in industrial environments.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HD64F3664FPV, HD64F3687FPV offers scalable memory within identical hardware compatibility, while R5F100PLDFB provides modern low-power architecture and mixed-signal integration at the cost of software rework and non-pin-compatible layout changes.

Availability

HD64F3664FPV is available at Aetrix Electronics and suitable for industrial motor control, home appliance interface, and factory automation I/O modules requiring stable component supply and long-term obsolescence management.

Supply support for HD64F3664FPV 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 automotive, industrial, and IoT applications.

The HD64F3664FPV belongs to the H8/3664 Group - a family of 16-bit microcomputers designed for cost-sensitive, real-time embedded control in industrial equipment and consumer appliances where reliability, code compatibility, and peripheral integration are critical.

FAQ

What is the maximum operating frequency of the HD64F3664FPV?

The HD64F3664FPV supports a maximum system clock frequency of 20 MHz when using an external crystal or clock source. This frequency is achievable across the full specified supply voltage range (4.5 V to 5.5 V) and ambient temperature range (−20 °C to +75 °C). The internal clock generator includes prescalers and dividers to derive lower-frequency clocks for peripherals, ensuring deterministic timing for UART baud rates and timer intervals. HD64F3664FPV maintains instruction execution timing compliance at this speed per its hardware manual Rev. 6.00.

Does the HD64F3664FPV support in-system programming (ISP)?

Yes, the HD64F3664FPV supports in-system programming via its built-in boot mode. When the BOOT pin is asserted at reset, the device enters a special mode where UART0 accepts serial commands to erase, program, and verify the on-chip 64 KB flash memory. No external programmer is required, enabling field firmware updates and manufacturing programming through standard serial interfaces. HD64F3664FPV's FLMCR1 and FENR registers control flash access permissions and write enable states during ISP operations.

What power-saving modes does the HD64F3664FPV offer?

The HD64F3664FPV implements four distinct low-power modes: Sleep, Standby, Subsleep, and Subactive. In Standby mode, CPU and most peripherals halt while RAM and certain wakeup sources (e.g., IRQ pins, subclock interrupts) remain active, drawing less than 10 µA. Subsleep retains subclock operation for RTC functions. HD64F3664FPV transitions between modes via SYSCR1 and SYSCR2 register writes, with wake-up latency under 10 µs from Sleep mode. These modes are documented in Section 6 of the Hardware Manual Rev. 6.00.

Is the HD64F3664FPV pin-compatible with other H8/3664 series devices?

Yes, the HD64F3664FPV is pin-compatible with other members of the H8/3664 Group in the same 100-pin PQFP package, including HD64F3687FPV and HD64N3664. All share identical pin assignments for power, reset, clock, I/O ports, and peripheral signals. Differences lie in on-chip memory size and minor peripheral enablement - for example, HD64F3687FPV doubles ROM and RAM but uses the same HD64F3664FPV pinout. This allows hardware reuse across firmware variants without PCB redesign.

What development tools are supported for the HD64F3664FPV?

Renesas provides official support for HD64F3664FPV through the High-performance Embedded Workshop (HEW) IDE, H8/300H C/C++ compiler (REJ10B0058), and E8 in-circuit emulator. Debugging is enabled via dedicated NMI, P85–P87 pins (with hardware restrictions noted in the Hardware Manual), and on-chip address-break functionality. HD64F3664FPV also works with third-party tools supporting H8/300H ELF binaries and JTAG-like serial debug protocols. Application notes REJ05B0520 and REJ05B0464 detail boot-mode programming and compiler optimization.