Renesas DF2345FA20V

Overview

DF2345FA20V from Renesas Electronics is a 16-bit single-chip microcontroller in the H8S/2345 Group, featuring a 32-bit H8S/2000 CPU core, 256 KB on-chip F-ZTAT™ flash memory, 16 KB RAM, and integrated peripherals including TPU, SCI, A/D converter, D/A converter, and DTC. It operates at up to 20 MHz and targets embedded control in industrial automation and instrumentation.

For engineers reviewing the DF2345FA20V datasheet, DF2345FA20V pinout, DF2345FA20V application, or DF2345FA20V equivalent, this part supports flexible boot modes (F-ZTAT™), real-time data transfer via DTC, and deterministic interrupt handling with 16 priority levels - critical for deterministic timing in motor control and sensor interface designs.

Technical Context

The DF2345FA20V implements the H8S/2000 CPU architecture with sixteen 16-bit general-purpose registers internally configured as 32-bit, enabling efficient C-language execution. Its linear 16 Mbyte address space is partitioned into eight configurable memory areas with selectable bus width and wait states.

On-chip memory includes 256 KB of single-power-supply F-ZTAT™ flash (programmable in-system, 100× rewrite endurance, 10-year data retention) and 16 KB SRAM. Peripheral integration includes a 16-bit Timer Pulse Unit (TPU) with 8 channels, 8-bit timers, watchdog timer, two full-duplex SCIs, 10-bit 8-channel A/D converter, and 8-bit D/A converter.

Key Specifications

Pinout & Package

DF2345FA20V is housed in a 100-pin TFP (Thin Fine-Pitch) plastic QFP package (TFP-100B), measuring 14 mm × 20 mm × 1.7 mm, with 0.5 mm lead pitch and exposed thermal pad. Pin assignment follows the H8S/2345 Group standard layout defined in Renesas Hardware Manual Rev.4.00.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HD64F2340 and R5F52345ADFP, DF2345FA20V uniquely balances mature F-ZTAT™ flash integration, deterministic real-time peripherals (TPU/DTC), and pin-compatible legacy support - making it optimal for sustaining production of existing H8S-based industrial controllers without architectural migration.

Availability

DF2345FA20V is available at Aetrix Electronics and suitable for industrial motor control, PLC I/O modules, test equipment, and factory automation sensor hubs requiring stable component supply across long product lifecycles.

Supply support for DF2345FA20V 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 industrial, automotive, and infrastructure markets.

The DF2345FA20V belongs to the H8S/2300 Series microcontroller family, designed specifically for deterministic real-time embedded control in cost-sensitive industrial applications where reliability, flash flexibility, and peripheral integration are critical.

FAQ

What is the maximum operating frequency of the DF2345FA20V?

The DF2345FA20V operates at a maximum system clock frequency of 20 MHz, as specified in the H8S/2345 Group Hardware Manual Rev.4.00. This frequency is achieved using an external crystal or clock source applied to the EXTAL/CLK pins, with internal clock distribution supporting consistent timing for CPU execution and peripheral operation. The DF2345FA20V maintains full specification compliance-including A/D conversion accuracy and TPU timing-up to this rated frequency.

Does the DF2345FA20V include on-chip flash memory, and what are its key characteristics?

Yes, the DF2345FA20V integrates 256 KB of F-ZTAT™ flash memory. Key characteristics include single-power-supply programming (5 V), guaranteed minimum 100 write/erase cycles, typical endurance up to 10,000 cycles, and 10-year data retention at 25°C. Programming time is 10–200 ms per 32-byte block, and erase time is 100–1200 ms per block. These values are measured under conditions defined in Table 20.10 of the H8S/2345 Hardware Manual.

How many analog-to-digital converter (ADC) channels does the DF2345FA20V support, and what is its resolution?

The DF2345FA20V features a 10-bit successive approximation register (SAR) ADC with 8 input channels (AD0–AD7). It supports programmable sampling time and provides ±1 LSB integral nonlinearity (INL) over its full operating range. Conversion time is dependent on selected clock source and prescaler settings, with typical values ranging from 1.5 µs to 10 µs per sample as documented in Section 14.4.3 of the hardware manual.

What peripheral modules are integrated into the DF2345FA20V for real-time control tasks?

The DF2345FA20V integrates several real-time control peripherals: a 16-bit Timer Pulse Unit (TPU) with 8 channels for PWM, input capture, and quadrature decoding; a Data Transfer Controller (DTC) supporting 32-channel memory-peripheral transfers; two full-duplex Serial Communication Interfaces (SCI); a watchdog timer (WDT); and an 8-bit D/A converter with dual output channels. These modules operate independently of the CPU, enabling deterministic response to time-critical events.

Is the DF2345FA20V pin-compatible with other members of the H8S/2345 Group?

Yes, the DF2345FA20V shares the same 100-pin TFP-100B package and pinout as other H8S/2345 Group variants including HD64F2345 and HD6472345, as confirmed in Section 1.3.1 (Pin Arrangement) of the H8S/2345 Hardware Manual Rev.4.00. This allows direct substitution within the same footprint when flash configuration, memory size, or peripheral enablement align with design requirements.