Renesas UPD78F1504AGC-UEU-AX

Overview

UPD78F1504AGC-UEU-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 I²C, UART, and CSI interfaces, and targets embedded control in industrial sensors and motor drive subsystems.

For engineers reviewing the UPD78F1504AGC-UEU-AX datasheet, UPD78F1504AGC-UEU-AX pinout, UPD78F1504AGC-UEU-AX application, or UPD78F1504AGC-UEU-AX equivalent, key selection criteria include Flash endurance (100k write/erase cycles), operating voltage range (2.7–5.5 V), and support for low-power stop modes with wake-up via external interrupt or RTC alarm.

Technical Context

The UPD78F1504AGC-UEU-AX implements the 78K0R CPU core with 16-bit ALU, 24-bit address space, and Harvard architecture. It integrates a programmable watchdog timer, on-chip voltage regulator (V_REG), and power-on reset circuit with adjustable delay.

Peripheral integration includes a 16-bit multifunction timer array (MTU) with complementary PWM output, a 10-bit ADC with sample-and-hold and hardware-triggered conversion sequencing, and dual serial interface controllers supporting synchronous/asynchronous communication across three protocols.

Key Specifications

Pinout & Package

UPD78F1504AGC-UEU-AX is housed in a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per the 78K0R/LG3 specification and include dedicated analog inputs (AN0–AN23), high-current I/O (up to 20 mA sink/source), and dual reset inputs (RESET and REGC).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10PLGCLFB#30 and UPD78F1506AGC-UEU-AX, the UPD78F1504AGC-UEU-AX offers optimal balance of analog channel count, drive capability, and regulated power management - making it ideal for cost-sensitive, mixed-signal industrial controls where CAN is not required.

Availability

UPD78F1504AGC-UEU-AX is available at Aetrix Electronics and suitable for industrial sensor nodes, BLDC motor drives, smart meter interfaces, and PLC I/O modules requiring stable component supply across multi-year production cycles.

Supply support for UPD78F1504AGC-UEU-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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power devices for industrial, automotive, and infrastructure markets.

The 78K0R/LG3 product line delivers cost-optimized 16-bit MCUs with enhanced analog integration and robust I/O for deterministic real-time control in factory automation and energy systems.

FAQ

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

The UPD78F1504AGC-UEU-AX supports a maximum system clock frequency of 20 MHz when using the external crystal oscillator or the internal high-speed oscillator (8 MHz ±2% with PLL multiplication). Its 78K0R CPU core achieves 1.15 DMIPS/MHz, delivering ~23 DMIPS at full speed - sufficient for real-time sensor fusion and motor control loops.

Does the UPD78F1504AGC-UEU-AX include an on-chip voltage regulator?

Yes, the UPD78F1504AGC-UEU-AX integrates an on-chip voltage regulator controlled by the REGC pin. When REGC is held high, the regulator supplies internal circuitry from the VDD pin; tying REGC low disables regulation and requires externally regulated 3.3 V or 5 V. This feature simplifies power design and supports dual-supply configurations.

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

The UPD78F1504AGC-UEU-AX provides 24 analog input channels (AN0–AN23) for its 10-bit successive approximation ADC. These channels are multiplexed across Ports 2–5 and Port 10, allowing flexible signal routing. The ADC supports hardware-triggered conversions, scan mode, and sample-and-hold - enabling synchronized multi-channel acquisition for motor current sensing or sensor arrays.

Is the UPD78F1504AGC-UEU-AX pin-compatible with other 78K0R/LG3 devices?

No, the UPD78F1504AGC-UEU-AX is not fully pin-compatible with all 78K0R/LG3 variants. While it shares the same 100-pin LQFP package and core pinout structure with devices like UPD78F1503A and UPD78F1505A, differences in peripheral mapping (e.g., absence of CAN in UPD78F1504AGC-UEU-AX versus inclusion in UPD78F1513A) require PCB layout verification before substitution.

What debug interface does the UPD78F1504AGC-UEU-AX support?

The UPD78F1504AGC-UEU-AX supports Renesas' on-chip debugging interface compatible with the QB-MINI2 emulator. It uses the dedicated BKGD pin for bidirectional communication, enabling breakpoints, register inspection, and real-time trace without halting execution. No external JTAG adapter is needed - reducing development tooling cost and board footprint.