Renesas UPD70F3714GC-8BS-A

Overview

UPD70F3714GC-8BS-A from Renesas Electronics is a 32-bit V850ES/IE2 single-chip microcontroller with 128KB on-chip Flash ROM, 6KB RAM, integrated 10-bit A/D converters (8 channels total), dual UARTs, CSI interface, and six 16-bit timers including TMQ1 with 6-phase PWM capability for inverter control. It operates at up to 20MHz across −40°C to +85°C ambient temperature in industrial applications requiring motor drive timing and analog sensing.

For engineers reviewing the UPD70F3714GC-8BS-A datasheet, UPD70F3714GC-8BS-A pinout, UPD70F3714GC-8BS-A application, or UPD70F3714GC-8BS-A equivalent, key selection criteria include Flash size, 6-phase PWM support via TMQ1+TMQOP1, 8-channel 10-bit A/D conversion with hardware trigger options, UART/CSI serial flexibility, and LQFP-64 package compatibility with industrial power supply (4.5–5.5V) requirements.

Technical Context

The UPD70F3714GC-8BS-A implements the V850ES RISC core delivering 26 MIPS at 20MHz, with an integrated PLL (×8) enabling operation from a 2.5MHz crystal. Its timer subsystem includes four TMP-type 16-bit timers (TMP0–TMP3), two TMQ-type 16-bit timers (TMQ0, TMQ1), one TMM interval timer, and a watchdog timer - all supporting capture, compare, PWM, and event counting functions.

Serial connectivity comprises one CSI channel (3-wire, up to 5Mbps) and two full-duplex UARTs (with baud rate generator, parity, stop-bit, and MSB/LSB configuration). The dual 10-bit A/D converters (ANI00–ANI03 and ANI10–ANI13) support simultaneous sampling, software/hardware/external/timer-triggered conversion, and A/D trigger synchronization with TMQ1 for precise motor control timing.

Key Specifications

Pinout & Package

Package: 64-pin LQFP (14 × 14 mm, 0.8 mm pitch), RoHS-compliant, standard industrial footprint.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 32-bit motor control microcontroller applications.

Compared with R5F566TEADFP and STM32F334R8T6, the UPD70F3714GC-8BS-A delivers optimal balance of Flash capacity, integrated 6-phase PWM with dead-time, industrial-grade clock monitoring, and proven reliability in motor control - making it ideal for mid-tier industrial drives where pin compatibility with legacy V850ES designs and deterministic real-time behavior are prioritized over ARM toolchain adoption or ultra-high integration.

Availability

UPD70F3714GC-8BS-A is available at Aetrix Electronics and suitable for industrial motor drives, automotive HVAC systems, programmable power supplies, and PLC I/O modules requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.

Supply support for UPD70F3714GC-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 specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The UPD70F3714GC-8BS-A belongs to the V850ES/IE2 microcontroller family, designed specifically for real-time motor control, inverter timing, and industrial automation applications demanding high reliability, integrated analog peripherals, and deterministic interrupt latency.

FAQ

What is the maximum operating frequency and required clock source for UPD70F3714GC-8BS-A?

The UPD70F3714GC-8BS-A operates at a maximum frequency of 20MHz using an internal PLL clocked by a 2.5MHz crystal connected to X1/X2 pins. This configuration achieves 50ns minimum instruction execution time and 26 MIPS performance. The device also supports direct oscillator input or external clock, but the 2.5MHz crystal + PLL is the standard method for achieving rated speed with stable timing margins.

Does UPD70F3714GC-8BS-A support simultaneous sampling across all eight A/D channels?

Yes, the UPD70F3714GC-8BS-A contains two independent 10-bit A/D converters (A/D0 and A/D1), each with four channels (ANI00–ANI03 and ANI10–ANI13), and supports true simultaneous sampling when triggered by the same hardware signal - such as TMQ1's A/D trigger timing function. This capability is essential for capturing synchronized current measurements in three-phase motor control applications.

How is the 6-phase PWM functionality implemented in UPD70F3714GC-8BS-A?

The UPD70F3714GC-8BS-A implements 6-phase PWM through the combined operation of TMQ1 timer and the TMQOP1 option module. TMQ1 provides the base timing and compare registers, while TMQOP1 adds dead-time insertion, 6-output waveform generation (TOQ1T1–TOQ1T3 and TOQ1B1–TOQ1B3), forced output stop, and crest/valley interrupt-based cycle tuning - all without CPU intervention.

What safety-related features does UPD70F3714GC-8BS-A include for motor control applications?

The UPD70F3714GC-8BS-A includes a clock monitor (generating CLMER signal on oscillator failure), low-voltage detector (LVI) with programmable threshold and reset/interrupt selection, and a non-maskable watchdog timer (WDT) with configurable reset or NMI on overflow. These features enable fail-safe shutdown of PWM outputs and system recovery - meeting basic functional safety requirements for industrial motor drives.

Is UPD70F3714GC-8BS-A pin-compatible with other members of the V850ES/IE2 family?

Yes, the UPD70F3714GC-8BS-A shares the same 64-pin LQFP package and pinout with the UPD70F3713GC-8BS-A, differing only in Flash size (128KB vs. 64KB) and identical RAM (6KB), timer, A/D, and peripheral configurations. This allows hardware design reuse and firmware scalability between variants without PCB changes.