Renesas UPD78F1504AGC-UEU-X2-AX

Overview

UPD78F1504AGC-UEU-X2-AX from Renesas Electronics is a 16-bit single-chip microcontroller in the 78K0R/LG3 family, featuring 128 KB on-chip Flash memory, 8 KB RAM, and integrated 10-bit ADC with 24 channels. It operates at up to 20 MHz, supports 5 V operation, and includes UART, I²C, and CSI interfaces for embedded control. It is used in industrial motor control systems requiring deterministic real-time response and analog sensing.

For engineers reviewing the UPD78F1504AGC-UEU-X2-AX datasheet, UPD78F1504AGC-UEU-X2-AX pinout, UPD78F1504AGC-UEU-X2-AX application, or UPD78F1504AGC-UEU-X2-AX equivalent, key selection considerations include its 100-pin LQFP package, 128 KB Flash/8 KB RAM memory map, 10-bit ADC resolution and channel count, 20 MHz max CPU frequency, and support for 5 V supply with built-in voltage regulator (REGC pin).

Technical Context

The UPD78F1504AGC-UEU-X2-AX implements the 78K0R CPU core with 16-bit architecture, Harvard memory organization, and instruction set compatible with earlier 78K0 devices. It integrates a 10-bit successive-approximation ADC with sample-and-hold, programmable conversion start triggers, and scan mode across 24 input channels.

Peripheral integration includes three 16-bit timer arrays (TAU) with PWM output capability, two serial interface modules (UART and I²C), and a clock generation circuit supporting main clock (up to 20 MHz), sub-clock (32.768 kHz), and on-chip oscillator (1 MHz). The device supports low-power modes including HALT and STOP with wake-up via external interrupt or peripheral event.

Key Specifications

Pinout & Package

UPD78F1504AGC-UEU-X2-AX is housed in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions are defined per Renesas Hardware User's Manual Rev.5.01 (Jun 2011), Section 1.3.2 and 2.1.2 for 78K0R/LG3 group.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit microcontroller applications.

Compared with R5F10PLGCLFB#30 and UPD78F1505AGC-UEU-X2-AX, the UPD78F1504AGC-UEU-X2-AX delivers balanced analog integration (24-channel ADC), sufficient memory (128 KB/8 KB), and self-contained power (REGC) - making it ideal for cost-sensitive, sensor-intensive industrial controls without CAN requirements.

Availability

UPD78F1504AGC-UEU-X2-AX is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, and PLC I/O modules requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for UPD78F1504AGC-UEU-X2-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 industrial, automotive, and infrastructure markets.

The 78K0R/LG3 product line was designed for cost-effective, high-integration 16-bit control in industrial automation, home appliances, and sensor-based equipment - emphasizing analog peripheral density, low-power operation, and robust flash reliability.

FAQ

What is the maximum operating frequency of the UPD78F1504AGC-UEU-X2-AX?

The UPD78F1504AGC-UEU-X2-AX supports a maximum CPU operating frequency of 20 MHz using the main system clock. This frequency is achievable with an external crystal (up to 20 MHz) or the on-chip oscillator (1 MHz, optionally multiplied via PLL). Timing-critical peripherals such as TAU timers and ADC conversions scale directly with this clock source, enabling precise 50 ns instruction cycle resolution.

Does the UPD78F1504AGC-UEU-X2-AX include an integrated voltage regulator?

Yes, the UPD78F1504AGC-UEU-X2-AX features an internal voltage regulator controlled by the REGC pin. When enabled, it generates a stable 3.3 V supply for internal logic and peripherals from the main 4.0–5.5 V VDD rail. An external 10 μF capacitor must be connected to REGC for proper regulation and noise suppression, eliminating the need for an external 3.3 V LDO in most designs.

How many analog input channels does the ADC in the UPD78F1504AGC-UEU-X2-AX support?

The UPD78F1504AGC-UEU-X2-AX integrates a 10-bit successive-approximation ADC with 24 selectable analog input channels. These channels are mapped across multiple ports (P0–P5, P10–P12) and support hardware-scan mode, allowing autonomous sequential conversion without CPU intervention. Input voltage range is 0 to AVDD, with internal reference options including AVREFP or VREFOUT.

Is the UPD78F1504AGC-UEU-X2-AX pin-compatible with other members of the 78K0R/LG3 family?

The UPD78F1504AGC-UEU-X2-AX shares the same 100-pin LQFP package and pinout with other 78K0R/LG3 devices including UPD78F1503A and UPD78F1505A. However, functional differences exist - for example, UPD78F1505A adds a CAN controller not present in UPD78F1504AGC-UEU-X2-AX. Pin compatibility enables PCB reuse, but firmware and peripheral configuration must be verified per device variant.

What debug and programming interfaces are supported by the UPD78F1504AGC-UEU-X2-AX?

The UPD78F1504AGC-UEU-X2-AX supports on-chip debugging via the single-wire SWD interface using Renesas QB-MINI2 emulator. Flash programming is performed through the same interface or via the dedicated FLMD0 boot mode pin for serial programming. The device is fully supported by Renesas' CC78K0R compiler suite and RA78K0R assembler, with no external programming hardware required beyond standard JTAG/SWD adapters.