Renesas UPD70F3752GC-UEU-AX

Overview

UPD70F3752GC-UEU-AX from Renesas Electronics is a 32-bit V850ES/HG3 single-chip microcontroller featuring 512 KB on-chip Flash memory, 48 KB RAM, and a maximum operating frequency of 40 MHz. It integrates a 10-bit ADC with 16 channels, 32-bit timer/counters, UART, I²C, and CAN 2.0B interface, targeting real-time embedded control in industrial automation and motor drive systems.

For engineers reviewing the UPD70F3752GC-UEU-AX datasheet, UPD70F3752GC-UEU-AX pinout, UPD70F3752GC-UEU-AX application, or UPD70F3752GC-UEU-AX equivalent, key selection considerations include its V850ES core architecture, 100-pin LQFP package, CAN bus support, Flash programming voltage range (2.7–3.6 V), and industrial-grade temperature range (−40°C to +85°C).

Technical Context

The UPD70F3752GC-UEU-AX implements the V850ES CPU core with 32-bit RISC architecture, supporting 16/32-bit mixed instruction set and 5-stage pipeline execution. It includes an on-chip debug interface compliant with IEEE 1149.1 (JTAG) and supports in-circuit debugging via MINICUBE2 or IECUBE.

Its peripheral set includes three 32-bit general-purpose timers (TGU), one watchdog timer (WDT), a 10-bit ADC with sample-and-hold and scan mode, and dual CAN controllers with message objects and FIFO buffers - all synchronized to the same clock domain for deterministic timing in safety-critical loops.

Key Specifications

Pinout & Package

UPD70F3752GC-UEU-AX is housed in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) package with exposed thermal pad. Pin assignments follow the V850ES/HG3 family layout, including dedicated CANH/CANL differential pins, multiplexed ADC inputs on Port 3 and Port 4, and JTAG debug interface on Port 12.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F566TEADFP and MB9BF518RPMC, the UPD70F3752GC-UEU-AX offers optimal balance of CAN-enabled real-time control, industrial temperature tolerance, and compact 100-pin LQFP footprint - making it ideal for cost-constrained, fieldbus-dependent embedded nodes where ARM migration is unnecessary.

Availability

UPD70F3752GC-UEU-AX is available at Aetrix Electronics and suitable for industrial motor control, factory automation PLC nodes, building energy management systems, and industrial HVAC controllers requiring stable component supply across multi-year production cycles.

Supply support for UPD70F3752GC-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 global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The UPD70F3752GC-UEU-AX belongs to the V850ES/HG3 product line, designed specifically for deterministic real-time control in industrial equipment where CAN connectivity, Flash security, and extended temperature operation are essential.

FAQ

What is the maximum operating frequency of the UPD70F3752GC-UEU-AX?

The UPD70F3752GC-UEU-AX operates at a maximum frequency of 40 MHz. This speed is achieved using the on-chip PLL with external crystal input (1–10 MHz) or external clock source. The V850ES core's 5-stage pipeline ensures consistent instruction throughput, enabling sub-10 µs interrupt latency critical for motor control timing. All electrical specifications, including AC timing parameters, are guaranteed across the full −40°C to +85°C temperature range.

Does the UPD70F3752GC-UEU-AX support CAN FD or only classical CAN 2.0B?

UPD70F3752GC-UEU-AX supports only CAN 2.0B (Classical CAN) with bit rates up to 1 Mbps. It does not implement CAN FD features such as flexible data-rate or extended data length. Each of its two CAN controllers includes 16 message objects, programmable acceptance filters, and automatic retransmission - sufficient for deterministic industrial fieldbus networks. For CAN FD requirements, Renesas' RA6M5 or RH850/F1K families are recommended alternatives.

What debug interfaces are available on the UPD70F3752GC-UEU-AX?

The UPD70F3752GC-UEU-AX provides a full IEEE 1149.1-compliant JTAG interface (TDI, TDO, TCK, TMS, TRST) for boundary scan and on-chip debugging. It supports real-time trace, hardware breakpoints, and watchpoint triggering without code instrumentation. Renesas' MINICUBE2 and IECUBE debug emulators are fully compatible. No SWD or Serial Wire Debug interface is available - JTAG is the sole standardized debug path for this V850ES/HG3 device.

Is the UPD70F3752GC-UEU-AX qualified for automotive applications?

No, the UPD70F3752GC-UEU-AX is rated for Standard quality grade per Renesas documentation and intended for industrial applications such as motor control and factory automation. It is not AEC-Q100 qualified and lacks automotive-specific features like enhanced ESD protection, extended temperature range beyond +85°C, or built-in self-test (BIST) for safety-critical functions. For automotive use, Renesas' RH850 or RL78/F1x families are designated alternatives.

What is the Flash memory endurance and data retention specification for the UPD70F3752GC-UEU-AX?

The UPD70F3752GC-UEU-AX specifies 10,000 write/erase cycles for its 512 KB on-chip Flash memory, with data retention guaranteed for 20 years at +85°C and indefinitely at lower temperatures. Sector erase (minimum 1 KB) and page programming (64 bytes) are supported. Flash lock bits prevent read-out and accidental overwrite, and the bootloader area can be independently protected. These characteristics meet industrial firmware update requirements without external non-volatile storage.