Renesas UPD78F0148HGC-8BT-A

Overview

UPD78F0148HGC-8BT-A from Renesas Electronics is an 8-bit single-chip microcontroller in the 78K0/KF1+ family, featuring 128 KB Flash memory, 8 KB RAM, and a 16 MHz max CPU clock. It integrates UART, I²C, SPI, 10-bit ADC (8 channels), and 16-bit timer/counters. It targets industrial control panels requiring deterministic real-time response and low-power operation.

For engineers reviewing the UPD78F0148HGC-8BT-A datasheet, UPD78F0148HGC-8BT-A pinout, UPD78F0148HGC-8BT-A application, or UPD78F0148HGC-8BT-A equivalent, key selection criteria include Flash self-programming capability, on-chip debug support (via QB-78K0MINI), voltage range (2.7–5.5 V), and compliance with Standard quality grade for industrial equipment.

Technical Context

The UPD78F0148HGC-8BT-A implements the 78K0 CPU core with 16-bit address space and supports both mask ROM and Flash variants. Its architecture includes a dedicated on-chip debug circuit enabling real-time trace and breakpoint control without external emulator hardware.

It features dual power domains (VDD/EVDD) for I/O and core logic, supports internal oscillator (1 MHz/8 MHz selectable) and external crystal (1–20 MHz), and provides Power-on Clear at 2.1 V ±0.1 V - fixed threshold independent of supply ramp rate.

Key Specifications

Pinout & Package

UPD78F0148HGC-8BT-A is housed in a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignment follows the 78K0/KF1+ standard layout supporting multiplexed I/O, analog inputs, and debug interface signals.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit microcontroller applications.

Compared with UPD78F0148HGC-8BT-A, R5F100PLAFB#30 offers lower active and standby current but sacrifices on-chip debug capability and Flash self-programming flexibility, while MB95F572KPMC-G-SNE1 adds CAN and robustness at the cost of higher pin count and toolchain divergence.

Availability

UPD78F0148HGC-8BT-A is available at Aetrix Electronics and suitable for industrial HMI panels, factory sensor nodes, motor control modules, building automation controllers, and embedded instrumentation requiring stable component supply and long-term lifecycle support.

Supply support for UPD78F0148HGC-8BT-A 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 manufacturer formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power devices.

The 78K0/KF1+ product line was designed for cost-effective, real-time industrial control applications requiring Flash programmability, on-chip debug, and wide operating voltage range - targeting equipment where reliability and toolchain maturity are essential.

FAQ

What is the maximum operating frequency of the UPD78F0148HGC-8BT-A?

The UPD78F0148HGC-8BT-A supports a maximum CPU clock frequency of 16 MHz. This is achieved using either the internal high-speed oscillator (8 MHz, doubled via PLL) or an external crystal up to 20 MHz with appropriate prescaler configuration. At 16 MHz, the minimum instruction execution time is 0.125 μs, enabling deterministic real-time response in control loops.

Does the UPD78F0148HGC-8BT-A support in-system programming?

Yes, the UPD78F0148HGC-8BT-A supports full in-system programming of its 128 KB Flash memory via standard I/O pins using the on-chip self-programming function. No external programmer is needed - firmware updates can be performed using UART or other serial interfaces with user-implemented bootloader code, as documented in the 78K0/KF1+ Flash Memory Self Programming User's Manual (U16701E).

What debug tools are compatible with the UPD78F0148HGC-8BT-A?

The UPD78F0148HGC-8BT-A is fully supported by the QB-78K0MINI On-Chip Debug Emulator and the RA78K0 assembler toolchain. Its integrated debug circuit allows real-time trace, register inspection, and breakpoint setting without external ICE hardware. The ID78K0-QB Ver. 2.90 Integrated Debugger (U17437E) provides full IDE integration for development and validation.

Is the UPD78F0148HGC-8BT-A qualified for automotive applications?

No, the UPD78F0148HGC-8BT-A is classified under the Standard quality grade per Renesas documentation, intended for industrial equipment, office automation, and consumer appliances. It is not qualified for automotive use - which requires High Quality grade certification, extended temperature range (−40°C to +125°C), and AEC-Q100 qualification. For automotive applications, consider Renesas RL78/F1x or RH850 families.

What is the power supply configuration for the UPD78F0148HGC-8BT-A?

The UPD78F0148HGC-8BT-A uses dual power domains: VDD (core logic, 2.7–5.5 V) and EVDD (I/O ports, same voltage range). This separation allows independent noise filtering and improves noise immunity. Both supplies must be within specification simultaneously; the device incorporates a fixed 2.1 V ±0.1 V Power-on Clear circuit that asserts reset until both rails stabilize above threshold.