Renesas DF2148RVTE10V

Overview

DF2148RVTE10V from Renesas Electronics is a 16-bit single-chip microcontroller in the H8S/2148 Group, featuring a 32-bit H8S/2000 CPU core, 64 KB on-chip flash memory (F-ZTAT™), 2 KB RAM, and integrated peripherals including dual 14-bit PWM timers (PWMX), 16-bit free-running timer (FRT), three SCI interfaces, dual I²C bus interface (option), PS/2-compatible keyboard buffer controller, host interface (HIF), dual D/A converters, and 8-channel 10-bit A/D converter. It targets intelligent power management in notebook PC battery control systems.

For engineers reviewing the DF2148RVTE10V datasheet, DF2148RVTE10V pinout, DF2148RVTE10V application, or DF2148RVTE10V equivalent, key selection considerations include its 3.3 V operation, TFP-100B 100-pin thin fine-pitch package, F-ZTAT™ flash architecture enabling field updates, dual I²C support for system monitoring buses, and PS/2 keyboard controller for embedded human-interface subsystems.

Technical Context

The DF2148RVTE10V implements the H8S/2000 CPU core with 16 × 16-bit general-purpose registers, executes basic instructions in one state, and supports a 16-Mbyte linear address space. Its on-chip data transfer controller (DTC) enables autonomous peripheral-to-memory transfers without CPU intervention.

It operates in single-chip mode with configurable port functions-Port A supports simultaneous key-sense interrupt inputs (KIN15–KIN8), expansion A/D inputs (CIN15–CIN8), and PS/2 bidirectional data/control (PS2CD/PS2CC), while Port 6 includes dedicated timer output (TMOX) and analog comparator input (CIN7).

Key Specifications

Pinout & Package

DF2148RVTE10V is housed in the TFP-100B package - a 100-pin thin fine-pitch quad flat package with exposed thermal pad, 0.5 mm lead pitch, and 14 mm × 14 mm body size. Pin functions are mode-configurable via SYSCR and port direction registers.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DF2148RVTE10V, HD64F2148AV offers more flash but less thermal efficiency and no 3.3 V optimization, while HD64F2147NV retains package compatibility but removes the DTC - a key enabler for low-CPU-load power monitoring.

Availability

DF2148RVTE10V is available at Aetrix Electronics and suitable for notebook PC battery management, embedded keyboard control, intelligent power supply monitoring, and host interface bridging requiring stable component supply across multi-year production cycles.

Supply support for DF2148RVTE10V 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, and power solutions for automotive, industrial, and consumer applications.

The H8S/2148 Group was designed specifically for embedded system control in portable computing - integrating PS/2, I²C, ADC, and flash in a thermally optimized 3.3 V package to replace discrete keyboard/battery controller combinations.

FAQ

What is the operating voltage range for DF2148RVTE10V?

The DF2148RVTE10V operates at a nominal supply voltage of 3.3 V with a tolerance of ±0.3 V (3.0 V to 3.6 V). This range is strictly defined in the Renesas H8S/2148 Group hardware manual and must be maintained to ensure correct flash programming, ADC accuracy, and I²C timing compliance. Operation outside this range may cause undefined behavior or permanent damage to the DF2148RVTE10V.

Does DF2148RVTE10V support in-system programming of its flash memory?

Yes, DF2148RVTE10V supports full in-system programming via its F-ZTAT™ flash architecture. The device allows sector erase and byte/word programming while operating from a single 3.3 V supply, with no external high-voltage programming required. Firmware updates can be performed through SCI, I²C, or host interface - all managed by on-chip flash control registers documented in the H8S/2148 Group hardware manual.

How many I²C interfaces does DF2148RVTE10V include, and are they enabled by default?

DF2148RVTE10V includes two I²C bus interfaces (IIC0 and IIC1), implemented as an optional module. They are not enabled by default; activation requires setting the IICEN bit in the peripheral enable control register (PERCR) and configuring associated pins (e.g., P30/SDA0, P31/SCL0) as open-drain I/O. Both channels support standard (100 kHz) and fast-mode (400 kHz) operation per SMBus v1.1.

What is the maximum resolution and sampling rate of the A/D converter in DF2148RVTE10V?

The DF2148RVTE10V integrates an 8-channel, 10-bit successive-approximation A/D converter with ±1 LSB integral nonlinearity. At its fastest conversion cycle (1638.4 µs with CKS=0, OS=0), it achieves up to 610 samples per second per channel. Conversion time scales with clock configuration - selectable via ADC control registers - and supports both single-shot and continuous scan modes for battery voltage and temperature monitoring.

Is DF2148RVTE10V pin-compatible with other members of the H8S/2148 Group?

No, DF2148RVTE10V is not universally pin-compatible across the H8S/2148 Group. While it shares the TFP-100B package with variants like HD64F2148AV, pin functions differ significantly due to option configurations (e.g., I²C presence), memory size encoding, and voltage version coding ('V' suffix denotes 3.3 V). Direct substitution requires verification of pin mapping, power domain assignment, and peripheral enable settings per the H8S/2148 Group hardware manual.