Renesas DF2357F20V

Overview

DF2357F20V from Renesas Electronics is a 16-bit single-chip microcomputer in the H8S/2357 Group, featuring an H8S/2000 CPU core, 256 KB on-chip flash memory (F-ZTAT), 16 KB RAM, and integrated peripherals including A/D and D/A converters, SCI, PPG, timers, and DTC. It operates at 20 MHz max, supports 5 V supply, and targets embedded control systems requiring reprogrammable firmware and real-time I/O handling.

For engineers reviewing the DF2357F20V datasheet, DF2357F20V pinout, DF2357F20V application, or DF2357F20V equivalent, this page delivers verified technical context, package mapping to 128-pin QFP (FP-128B), confirmed flash endurance (100 write/erase cycles), and two validated alternative parts for industrial control and instrumentation designs.

Technical Context

The DF2357F20V implements a 32-bit internal data path with 16-bit external bus interface, enabling efficient instruction execution and peripheral access. It integrates a programmable pulse generator (PPG) with independent duty-cycle and period control, three timer types (8-bit, 16-bit, and 32-bit), and a data transfer controller (DTC) supporting automatic memory-to-peripheral transfers without CPU intervention.

Its flash memory uses F-ZTAT technology with on-chip programming capability and supports both ROM-based and flash-based boot modes. The device includes dedicated A/D (10-bit, 8-channel) and D/A (8-bit, 2-channel) converters, and serial communication via SCI with baud rate generation and framing error detection.

Key Specifications

Pinout & Package

DF2357F20V is housed in a 128-pin plastic quad flat pack (QFP), designated FP-128B per Renesas package documentation. This package features gull-wing leads, 0.65 mm pitch, and a 20 mm × 20 mm body size with 3.4 mm maximum height.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HD64F2357TE20, DF2357F20V enables firmware updates without hardware replacement; compared with HD64F2398F20, it omits CAN to reduce complexity and cost in non-networked control applications - making DF2357F20V optimal for standalone 5 V embedded systems needing flash-based adaptability.

Availability

DF2357F20V is available at Aetrix Electronics and suitable for industrial motor control, factory automation I/O modules, portable test equipment, and medical sensor interfaces requiring stable component supply and long-term manufacturing continuity.

Supply support for DF2357F20V 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, and power devices for industrial, automotive, and infrastructure markets.

The H8S/2357 Group was designed as a cost-optimized, 5 V-compatible 16-bit MCU family targeting industrial control, instrumentation, and legacy system upgrades where flash programmability and integrated analog peripherals are essential.

FAQ

What is the maximum operating frequency of the DF2357F20V?

The DF2357F20V operates at a maximum clock frequency of 20 MHz, as specified in the H8S/2357 Group Hardware Manual (Rev. 6.00). This frequency applies to both CPU execution and peripheral timing when driven by the external crystal or clock source connected to the EXTAL pin. Exceeding this limit may cause timing violations in flash access, A/D conversion, or SCI baud generation.

Does the DF2357F20V include on-chip flash memory, and how many write/erase cycles does it support?

Yes, the DF2357F20V includes 256 KB of on-chip F-ZTAT flash memory. According to Renesas documentation, this flash supports up to 100 write/erase cycles - a value confirmed for the HD64F2357F series in the Hardware Manual's flash characteristics section. This endurance is sufficient for development iterations and infrequent field updates.

What package type and pin count does the DF2357F20V use?

The DF2357F20V uses a 128-pin plastic quad flat pack (QFP) with package code FP-128B, as documented in Renesas' H8S/2398 Group product lineup table. Its dimensions are 20 mm × 20 mm with 0.65 mm lead pitch, and it is RoHS-compliant per Renesas environmental specifications.

Can the DF2357F20V perform analog-to-digital conversion, and what are its key A/D specs?

Yes, the DF2357F20V integrates a 10-bit successive-approximation A/D converter with eight input channels (AD0–AD7). It supports software- or timer-triggered conversions, selectable sample-and-hold times, and built-in reference voltage options. These capabilities are detailed in Section 18 of the H8S/2357 Group Hardware Manual.

Is the DF2357F20V pin-compatible with other H8S/2357 or H8S/2398 variants?

The DF2357F20V shares the same 128-pin QFP (FP-128B) package and pinout with HD64F2398F20, making them physically interchangeable. However, functional differences exist - notably, HD64F2398F20 adds a CAN controller and extra timers. Pin compatibility is confirmed in Renesas' package and pin function documentation for both groups.