Renesas UPD78F0741MA-FAA-AX

Overview

UPD78F0741MA-FAA-AX from Renesas Electronics is an 8-bit single-chip microcontroller in the 78K0/IY2 family, featuring 64 KB on-chip Flash memory, 4 KB RAM, and a 20 MHz max CPU clock. It integrates 16-bit timers X0/X1, 16-bit timer/event counter TM00, 8-bit timers T51/H1, watchdog timer, and 10-bit ADC with 16 channels. Used in industrial control panels requiring deterministic real-time response and low-power operation.

For engineers reviewing the UPD78F0741MA-FAA-AX datasheet, UPD78F0741MA-FAA-AX pinout, UPD78F0741MA-FAA-AX application, or UPD78F0741MA-FAA-AX equivalent, key selection criteria include Flash endurance (100k write/erase cycles), internal high-speed oscillator accuracy (±1% at 20 MHz), ADC resolution and channel count, and support for I²C-compatible serial interface via port pins.

Technical Context

The UPD78F0741MA-FAA-AX implements the 78K0 CPU core with 16-bit addressing, supporting up to 1 MB address space. Its clock system includes selectable sources: external crystal (1–20 MHz), internal high-speed oscillator (20 MHz ±1%), internal low-speed oscillator (15 kHz), and PLL for frequency multiplication.

Peripheral integration includes three independent 16-bit timer units (X0, X1, TM00) with PWM, capture/compare, and high-impedance output control; one 8-bit timer (T51) for event counting; one 8-bit timer (H1) with carrier generation; and a 10-bit successive-approximation ADC with sample-and-hold and hardware-triggered conversion sequencing.

Key Specifications

Pinout & Package

UPD78F0741MA-FAA-AX is housed in a 48-pin LQFP package (7 mm × 7 mm, 0.5 mm pitch) with exposed thermal pad (EP). Pin functions are defined per Renesas User's Manual Rev.5.00 (Feb 2012), Section 1.3.1 and 2.1.1 for 78K0/IY2 series.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD78F0741MA-FAA-AX, R5F104LEAFB#30 offers superior power efficiency but sacrifices integrated clock accuracy and Flash capacity, while UPD78F0533GC-8EU-A reduces cost and complexity at the expense of ADC channel count and advanced timer functionality.

Availability

UPD78F0741MA-FAA-AX is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, and home appliance control panels requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for UPD78F0741MA-FAA-AX 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 Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The 78K0/IY2 product line - including UPD78F0741MA-FAA-AX - was designed for cost-sensitive, real-time embedded control applications demanding robust peripheral integration, Flash endurance, and industrial-grade reliability without external timing components.

FAQ

What is the maximum operating frequency of the UPD78F0741MA-FAA-AX?

The UPD78F0741MA-FAA-AX supports a maximum CPU clock frequency of 20 MHz. This can be achieved using the internal high-speed oscillator (±1% accuracy), an external crystal (1–20 MHz), or the PLL with appropriate prescaling. The actual system clock is configured via the CKC register and verified by the OSTS bit before switching.

Does the UPD78F0741MA-FAA-AX include a hardware debug interface?

Yes, the UPD78F0741MA-FAA-AX supports on-chip debugging via the single-wire debug (SWD) interface compatible with Renesas QB-MINI2 emulator. Debug access uses dedicated pins P121 (TxD) and P122 (RxD) in debug mode, and does not require additional JTAG pins - simplifying PCB layout for development and field programming.

How many ADC channels does the UPD78F0741MA-FAA-AX support, and what is its resolution?

The UPD78F0741MA-FAA-AX integrates a 10-bit successive-approximation ADC with 16 input channels (AN0–AN15), mapped to port pins P20–P27 and P30–P37. Conversion time is 1.2 μs minimum, and sequencing can be triggered automatically by timer overflow or external interrupt - enabling synchronized multi-channel sampling.

Is the UPD78F0741MA-FAA-AX pin-compatible with other 78K0/IY2 microcontrollers?

Yes, the UPD78F0741MA-FAA-AX shares the same 48-pin LQFP package and pinout with other 78K0/IY2 devices including UPD78F0740 and UPD78F0742. Differences lie in Flash size (64 KB), RAM (4 KB), and peripheral enablement - allowing hardware reuse across variants when firmware accommodates resource variations.

What is the Flash endurance specification for the UPD78F0741MA-FAA-AX?

The UPD78F0741MA-FAA-AX features 64 KB of on-chip SuperFlash® memory rated for 100,000 write/erase cycles and 10-year data retention at 85°C. Erase operations are sector-based (1 KB), and the MCU includes built-in erase verification to ensure data integrity during field firmware updates.