Renesas UPD78F0134M2GC-8BS-A

Overview

UPD78F0134M2GC-8BS-A from Renesas Electronics is an 8-bit Flash-based microcontroller in the 78K0/KE1 family, featuring 64 KB on-chip Flash memory, 4 KB RAM, and a 16-bit timer with PWM output capability. It operates at up to 20 MHz (50 ns instruction cycle), supports 5 V single-supply operation, and integrates UART, I²C, and 10-bit ADC for embedded control applications in industrial sensors and motor drives.

For engineers reviewing the UPD78F0134M2GC-8BS-A datasheet, UPD78F0134M2GC-8BS-A pinout, UPD78F0134M2GC-8BS-A application, or UPD78F0134M2GC-8BS-A equivalent, key selection considerations include Flash endurance (100,000 write/erase cycles), operating temperature range (−40°C to +85°C), 64-pin LQFP package compatibility, and support for on-chip debug via dedicated pins.

Technical Context

The UPD78F0134M2GC-8BS-A implements the 78K0 CPU core with 16-bit ALU and 8-bit data bus, executing instructions in 1–4 cycles. It includes a 16-bit multifunction timer (TM0–TM2) with capture/compare, PWM generation, and dead-time insertion, plus a 10-bit successive-approximation ADC with 16 input channels and scan mode.

Peripheral integration includes full-duplex UART with automatic baud rate detection, I²C-compatible serial interface supporting master/slave modes, and a watchdog timer with independent clock source. The device uses a single 5 V supply (VDD/EVDD = 4.5–5.5 V) and features power-on reset with selectable threshold (2.85 V ±0.15 V or 3.5 V ±0.2 V).

Key Specifications

Pinout & Package

UPD78F0134M2GC-8BS-A is housed in a 64-pin LQFP (10 mm × 10 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions are defined per Renesas User's Manual U16228EJ3V1UD, Chapter 1.5 and 2.1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100LEAFB#30 and UPD78F0533GK-GAJ-AX, the UPD78F0134M2GC-8BS-A offers optimal balance of Flash size, peripheral integration (especially hardware I²C), and 64-pin LQFP footprint for cost-sensitive industrial control designs where moderate memory and proven reliability are prioritized.

Availability

UPD78F0134M2GC-8BS-A is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, and programmable logic controller (PLC) I/O modules requiring stable component supply and long-term production continuity.

Supply support for UPD78F0134M2GC-8BS-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 leader headquartered in Japan, specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The UPD78F0134M2GC-8BS-A belongs to the 78K0/KE1 product line, designed specifically for cost-effective, high-reliability embedded control in industrial equipment, home appliances, and sensor systems requiring Flash programmability and mixed-signal integration.

FAQ

What is the maximum operating frequency of the UPD78F0134M2GC-8BS-A?

The UPD78F0134M2GC-8BS-A supports a maximum operating frequency of 20 MHz, corresponding to a 50 ns instruction cycle time. This is achieved using an external crystal or ceramic resonator connected to the X1/X2 pins, or via the internal high-speed oscillator when configured. The device maintains full functionality-including ADC conversion, UART transmission, and PWM generation-at this speed, making it suitable for time-critical control tasks such as motor commutation and real-time sensor polling.

Does the UPD78F0134M2GC-8BS-A include hardware I²C support?

Yes, the UPD78F0134M2GC-8BS-A includes a dedicated hardware I²C interface supporting both master and slave modes with clock stretching. Pins P14 and P15 (SCL/SDA) are assigned to this peripheral, enabling reliable, low-software-overhead communication with temperature sensors, EEPROMs, and other I²C-compatible devices. Unlike bit-banged implementations, this hardware block handles arbitration, ACK/NACK generation, and timing compliance per I²C specification without CPU intervention.

What is the Flash memory endurance rating for the UPD78F0134M2GC-8BS-A?

UPD78F0134M2GC-8BS-A specifies Flash memory endurance of 100,000 write/erase cycles per sector, with data retention exceeding 20 years at +85°C. This rating applies to the entire 64 KB on-chip Flash array and is validated under Renesas' standard qualification tests. The device also supports EEPROM emulation using designated Flash sectors, allowing nonvolatile parameter storage with wear-leveling managed in firmware.

Is the UPD78F0134M2GC-8BS-A pin-compatible with other members of the 78K0/KE1 family?

The UPD78F0134M2GC-8BS-A shares the same 64-pin LQFP package and core pinout (including power, reset, oscillator, and primary I/O mapping) with other 64-pin variants in the 78K0/KE1 family, such as µPD780134(A) and UPD78F0134(A1). However, Flash-specific pins (e.g., VPP) and certain peripheral assignments differ between mask ROM and Flash versions. For drop-in replacement, verify peripheral enablement and fuse settings in the target application's startup code and hardware design.

What debug interface does the UPD78F0134M2GC-8BS-A support?

The UPD78F0134M2GC-8BS-A supports on-chip debugging via the dedicated 5-pin interface (including TDI, TDO, TCK, TMS, and RESET), compatible with Renesas IE-78K0-NS and ID78K0-QB debug tools. This interface enables full breakpoint control, register inspection, and Flash programming during development. No external debug probe is required beyond the standard Renesas toolchain, and debug functionality remains active even when running from internal Flash memory.