Renesas DF36057FZV

Overview

DF36057FZV from Renesas Electronics is a 16-bit single-chip microcontroller in the H8/36057 Group, featuring the H8/300H CPU core, 128 KB on-chip ROM, 8 KB RAM, and integrated peripherals including SCI, I²C, timer modules, and 80-pin PQFP package. It operates at up to 20 MHz and supports multiple low-power modes (Sleep, Standby, Subsleep) for embedded control applications in industrial equipment and office automation.

For engineers reviewing the DF36057FZV datasheet, DF36057FZV pinout, DF36057FZV application, or DF36057FZV equivalent, key selection considerations include its 80-pin PQFP footprint, 128 KB mask-ROM program memory, H8/300H instruction set compatibility, integrated clock pulse generator with crystal/ceramic resonator support, and system-level power-down mode sequencing via SYSCR1/SYSCR2 registers.

Technical Context

The DF36057FZV implements the H8/300H CPU core with 16-bit data bus and 24-bit address space, supporting both big-endian and little-endian data formats. Its memory map includes dedicated areas for on-chip ROM (0x000000–0x01FFFF), RAM (0xFFE000–0xFFFFF), and peripheral registers (0xF00000–0xF00FFF).

Peripheral integration includes three serial communication interfaces (SCI1–SCI3), one I²C bus interface, four 16-bit timer modules (with input capture/output compare), and a 10-bit ADC with 8 channels. Clock generation supports external crystal (1–10 MHz), ceramic resonator, or external clock input, with programmable prescaler S for system clock division.

Key Specifications

Pinout & Package

DF36057FZV is housed in an 80-pin Plastic Quad Flat Package (PQFP) with 0.65 mm lead pitch, 14 mm × 20 mm body size, and standard JEDEC MO-118 compliance. Thermal pad is not present; mounting requires standard reflow profile for plastic packages.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HD64F36057G and H8/36037, DF36057FZV provides full 128 KB ROM capacity and complete peripheral set (including SCI3 and four timers) in the same 80-pin PQFP package - making it the highest-spec variant for feature-rich embedded control without layout change.

Availability

DF36057FZV is available at Aetrix Electronics and suitable for industrial PLC modules, office equipment motor controllers, embedded test instruments, and building automation sensor nodes requiring stable component supply and long-term lifecycle support.

Supply support for DF36057FZV 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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The H8 Family/H8/300H Tiny Series - including DF36057FZV - was designed for cost-effective, low-power embedded control in resource-constrained applications such as office automation, industrial I/O, and consumer electronics.

FAQ

What is the maximum operating frequency of the DF36057FZV?

The DF36057FZV supports a maximum system clock frequency of 20 MHz, achievable using an external crystal (1–10 MHz) with internal PLL multiplication or direct external clock input. This allows deterministic instruction execution at 12.5 MIPS, suitable for real-time control loops with sub-100 µs response requirements. The DF36057FZV's clock pulse generator includes prescaler S for flexible division ratios to derive peripheral clocks from the main system clock.

Does the DF36057FZV include on-chip flash or ROM memory?

The DF36057FZV integrates 128 KB of mask-programmed ROM, not flash memory. This ROM is programmed during wafer fabrication and cannot be field-updated. It provides secure, tamper-resistant firmware storage ideal for high-volume, fixed-function applications like industrial controllers. For field-programmable variants, Renesas offers other members of the H8/36057 Group with flash memory, but DF36057FZV specifically uses mask ROM.

Is the DF36057FZV pin-compatible with other H8/36057 Group devices?

Yes, the DF36057FZV shares the same 80-pin PQFP package and pinout with all members of the H8/36057 Group, including HD64F36057, HD64F36057G, and HD64336057. Pin functions - including power, clock, reset, I/O ports, and peripheral alternate functions - are identical across these variants. This enables hardware reuse across different memory configurations or environmental grades without PCB redesign.

What low-power modes does the DF36057FZV support, and how are they controlled?

The DF36057FZV supports Sleep, Standby, Subsleep, and Subactive modes, managed through SYSCR1 and SYSCR2 registers. Sleep mode stops the CPU clock while preserving RAM and register contents; Standby halts all clocks except RTC; Subsleep reduces internal voltage for ultra-low leakage; Subactive maintains selected peripherals active while slowing CPU clock. Entry is triggered by STOP or SLEEP instructions, with wake-up sources including external interrupts, RTC alarm, or SCI receive events.

Can the DF36057FZV be programmed in-system, and what interface is used?

The DF36057FZV supports on-board programming via SCI3 using the boot mode feature. When boot mode is enabled (via external pin configuration), the device boots from SCI3 (P21/RXD and P22/TXD) to accept firmware images from a host PC or programmer. This eliminates the need for dedicated programming hardware and enables field firmware updates. Note that SCI3 is reserved for this purpose during boot mode and cannot serve dual roles simultaneously.