Renesas DF2148BFA20V

Overview

DF2148BFA20V from Renesas Electronics is a 16-bit H8S/2148B microcontroller featuring an H8S/2000 CPU core, 128 KB on-chip Flash ROM (F-ZTAT™), 4 KB RAM, 10-bit A/D converter, 8-bit D/A converter, and integrated peripherals including SCI, I²C, PWM timers (8-bit and 14-bit), FRT, WDT, and X-bus interface - used in industrial control and embedded instrumentation systems.

For engineers reviewing the DF2148BFA20V datasheet, DF2148BFA20V pinout, DF2148BFA20V application, or DF2148BFA20V equivalent, key selection considerations include its 128 KB reprogrammable Flash memory, 4 KB RAM, absence of LPC interface and WUE pins, 14.0 × 14.0 mm LQFP-144 package, and support for X-bus host interface with DRAM controller capability.

Technical Context

The DF2148BFA20V implements the H8S/2000 32-bit internal architecture with sixteen 16-bit general-purpose registers and a 16-Mbyte linear address space. It integrates a data transfer controller (DTC) operating as bus master, enabling autonomous memory-to-peripheral transfers without CPU intervention.

Its peripheral set includes dual PWM modules (8-bit PWM and 14-bit PWMX), a 16-bit free-running timer (FRT), 8-bit timer (TMR), watchdog timer (WDT), serial communication interface (SCI), I²C bus interface, keyboard buffer controller, and X-bus interface - but explicitly excludes LPC interface and wake-up event (WUE) functionality per official documentation.

Key Specifications

Pinout & Package

DF2148BFA20V is housed in a 144-pin LQFP (14.0 × 14.0 mm) package with exposed thermal pad. Pin functions are defined across multiple I/O ports (P0–P15), dedicated peripheral signals (e.g., AD0–AD9, DA0–DA7, TXD/RXD, SCL/SDA), and system control pins (RESET, CLK, VCC, VSS). NC pins must remain unconnected per design specification.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HD64F2145BV and HD64F2140BV, DF2148BFA20V offers balanced Flash capacity (128 KB) and full peripheral feature set - including 14-bit PWMX and X-bus - without LPC/WUE complexity, making it optimal for mid-tier industrial controllers requiring field-upgradable firmware and analog I/O integration.

Availability

DF2148BFA20V is available at Aetrix Electronics and suitable for industrial PLC modules, embedded test instruments, motor drive control boards, and communications gateways requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for DF2148BFA20V 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 H8S/2140B Group - including DF2148BFA20V - was designed for cost-effective, high-integration embedded control in industrial equipment, test instrumentation, and motor drives where Flash reprogrammability, analog peripherals, and X-bus expandability are critical.

FAQ

What is the Flash memory type and capacity of DF2148BFA20V?

DF2148BFA20V integrates 128 KB of F-ZTAT™ Flash memory - a Renesas proprietary reprogrammable Flash technology enabling in-system firmware updates without external programming hardware. This capacity supports medium-complexity control applications and allows iterative development through production. DF2148BFA20V uses this Flash as its primary program memory, eliminating need for external ROM or EPROM.

Does DF2148BFA20V support the LPC interface or wake-up event (WUE) pins?

No, DF2148BFA20V does not support the LPC interface or WUE pins. The official H8S/2140B Group Hardware Manual explicitly states that LPC functionality and WUE pin assignments (e.g., PB0–PB7 as WUE0–WUE7) are excluded from the H8S/2148B variant. DF2148BFA20V retains only the X-bus host interface and lacks the LPCPD, CLKRUN, PME, and HA0 signals required for Low Pin Count bus operation.

What are the key analog peripherals integrated into DF2148BFA20V?

DF2148BFA20V includes a 10-bit successive approximation A/D converter with up to 16 input channels and an 8-bit voltage-output D/A converter. These analog peripherals operate independently of the CPU core and support scan mode, trigger synchronization, and configurable reference voltages - enabling direct sensor signal acquisition and analog actuator control without external converter ICs in DF2148BFA20V-based designs.

Which timer modules are available on DF2148BFA20V and what are their resolutions?

DF2148BFA20V provides multiple timer resources: an 8-bit PWM timer, a 14-bit PWMX timer, a 16-bit free-running timer (FRT), an 8-bit timer (TMR), and a watchdog timer (WDT). The 14-bit PWMX delivers 16,384-step resolution for precise motor control or power regulation, while the 8-bit PWM supports faster switching frequencies. All timers support interrupt generation and can be synchronized via the DTC for deterministic real-time response in DF2148BFA20V applications.

What package type and pin count does DF2148BFA20V use?

DF2148BFA20V is packaged in a 144-pin LQFP with 0.5 mm pitch and 14.0 × 14.0 mm body dimensions. This package includes an exposed thermal pad for improved heat dissipation and supports standard reflow soldering processes. Pin assignments follow the H8S/2140B Group pinout specification, with dedicated I/O ports (P0–P15), peripheral signals (SCI, I²C, PWM, A/D, D/A), and system control pins - all documented in the official Renesas hardware manual for DF2148BFA20V.