Renesas DF2148BVTE10V

Overview

DF2148BVTE10V from Renesas Electronics is a 16-bit single-chip microcontroller in the H8S/2148 Group, featuring a 32-bit H8S/2000 CPU core, 128 KB on-chip flash memory (F-ZTAT™), 4 KB RAM, and integrated peripherals including dual 14-bit PWM timers (PWMX), three SCI interfaces, dual I²C bus interfaces (optional), PS/2-compatible keyboard buffer controller, host interface (HIF), 8-channel 10-bit ADC, dual 8-bit DACs, and data transfer controller (DTC). It targets PC peripheral control such as notebook keyboard and intelligent battery management.

For engineers reviewing the DF2148BVTE10V datasheet, DF2148BVTE10V pinout, DF2148BVTE10V application, or DF2148BVTE10V equivalent, key selection considerations include its 3.3 V operation, FP-100B/TQP-100B 100-pin QFP package, F-ZTAT™ flash programmability, dual I²C option support, and full H8S/2148 Group peripheral set - especially DTC-assisted high-speed data movement and timer interconnectability for monitor timing control.

Technical Context

The DF2148BVTE10V implements the H8S/2000 CPU core with 16 × 16-bit general-purpose registers, one-cycle basic instruction execution, and 16-Mbyte linear address space. It supports three operating modes (single-chip, expanded, and minimum) and integrates a bus controller (BSC) for external memory expansion up to 16 bits.

Its peripheral subsystem includes a 16-bit free-running timer (FRT), four 8-bit timers (TMR), two watchdog timers (WDT), three serial communication interfaces (SCI) with IrDA support, and an on-chip D/A converter with two independent 8-bit channels. The device uses a 3.3 V ±10% supply and operates across –20°C to +75°C ambient temperature.

Key Specifications

Pinout & Package

DF2148BVTE10V is housed in a 100-pin FP-100B (Fine Pitch QFP) or TFP-100B (Thin Fine Pitch QFP) package, 14 mm × 20 mm body, 0.5 mm pitch. Pin functions are mode-dependent (Mode 1/2/3), with shared roles across I/O, timer, SCI, I²C, HIF, PS/2, and A/D resources.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DF2148BVTE10V, HD64F2148AV offers identical functionality in a thinner package but no FP-100B variant, while HD64F2147N reduces memory and removes DTC - making it suitable for simpler, lower-cost implementations where full H8S/2148 feature set is unused.

Availability

DF2148BVTE10V is available at Aetrix Electronics and suitable for notebook keyboard control, intelligent battery management, PC monitor timing systems, and industrial HMI applications requiring stable component supply, long-term lifecycle support, and verified automotive-grade traceability.

Supply support for DF2148BVTE10V 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 consumer markets.

The H8S/2148 Group was designed specifically for PC peripheral and embedded control applications demanding high integration, low-voltage operation, and flexible firmware update capability - particularly in keyboard, battery, and display subsystems.

FAQ

What is the operating voltage range for DF2148BVTE10V?

The DF2148BVTE10V operates from 3.3 V ±10%, i.e., 2.97 V to 3.63 V. This single-supply requirement simplifies power design compared to legacy 5 V MCUs and aligns with modern low-power logic families. All I/O pins are 3.3 V tolerant, and the internal regulator supplies core logic at optimized voltage. DF2148BVTE10V must not be operated outside this range to ensure reliable flash programming and peripheral timing.

Does DF2148BVTE10V support in-circuit debugging?

Yes, DF2148BVTE10V supports on-chip debugging via the H8S/2000 series debug interface using Renesas E8/E8a emulators. It includes dedicated debug pins (BKPT, TRST, etc.) and supports breakpoints, watchpoints, and real-time register inspection. The DF2148BVTE10V also implements the background debugger mode (BDM) for non-intrusive program analysis without halting peripheral operation.

Is the I²C interface on DF2148BVTE10V enabled by default?

No, the dual I²C interface on DF2148BVTE10V is an optional feature activated only in devices ordered with the "W" suffix (e.g., HD6432148SW). The DF2148BVTE10V part number does not include factory-configured I²C hardware; it shares pin resources with other functions and requires explicit enablement in SYSCR and ICR registers - but only if the silicon variant supports it. Confirm I²C capability via Renesas datasheet revision and ordering code.

What package types are available for DF2148BVTE10V?

DF2148BVTE10V is available exclusively in the FP-100B (Fine Pitch QFP) package: 100-pin, 0.5 mm pitch, 14 mm × 20 mm body, 1.7 mm max height. It is not offered in TFP-100B or other variants. The FP-100B footprint is compatible with standard QFP reflow profiles and supports automated optical inspection (AOI) due to exposed pad absence.

How is flash memory programmed on DF2148BVTE10V?

DF2148BVTE10V uses F-ZTAT™ (Flexible-ZTAT) flash technology, enabling in-system programming via on-chip boot ROM routines accessed through SCI or HIF. Programming requires no external high-voltage supply - standard 3.3 V suffices. Erase blocks are configurable (1 KB to 28 KB), and write cycles are managed by hardware state machines. DF2148BVTE10V supports both mass erase and sector erase for field firmware updates.