Renesas UPD70F3424GJ(A)-GAE-AX

Overview

UPD70F3424GJ(A)-GAE-AX from Renesas Electronics is a 32-bit V850E/DJ3 single-chip microcontroller designed for automotive body electronics and dashboard systems. It integrates 512 KB flash memory, 24 KB RAM, 12-channel 10-bit A/D converter, dual UART, dual CSIB, dual I²C, 3-channel CAN, 6-channel stepper motor driver, and LCD interface in a 144-pin QFP package.

For engineers reviewing the UPD70F3424GJ(A)-GAE-AX datasheet, UPD70F3424GJ(A)-GAE-AX pinout, UPD70F3424GJ(A)-GAE-AX application, or UPD70F3424GJ(A)-GAE-AX equivalent, this page delivers verified technical context, exact pin functions, real-world automotive use cases, and validated alternative parts with documented functional and packaging differences.

Technical Context

The UPD70F3424GJ(A)-GAE-AX implements the V850E RISC CPU core with 64 MHz max operating frequency, supporting both internal main oscillator (32 MHz typ.) and sub-oscillator (32 kHz) for low-power modes. Its peripheral PLL enables flexible clock domain generation for CAN, UART, and timer subsystems.

It features dedicated hardware for automotive-grade timing integrity: on-chip power-on clear (POC), voltage comparators (2 ch), clock supervision, and watchdog timer. The device supports full CAN 2.0B protocol handling across three independent channels with message buffering and error detection logic.

Key Specifications

Pinout & Package

UPD70F3424GJ(A)-GAE-AX is housed in a 144-pin QFP package (JEDEC MS-026) with exposed thermal pad. Pin assignments are defined in Section 2.2 of R01DS0049ED0210 Rev. 2.10, covering µPD70F3426A/µPD70F3425/µPD70F3424 derivatives.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD70F3424GJ(A)-GAE-AX, UPD70F3425GJ(A)-GAE-AX offers headroom for future firmware expansion while maintaining identical hardware design, whereas UPD70F3423GJ(A)-GAE-AX reduces cost by removing non-essential interfaces but constrains scalability in sensor-rich applications.

Availability

UPD70F3424GJ(A)-GAE-AX is available at Aetrix Electronics and suitable for automotive instrument clusters, body control modules, and HVAC actuator controllers requiring stable component supply across extended temperature ranges (−40°C to +125°C).

Supply support for UPD70F3424GJ(A)-GAE-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 V850E/DJ3 product line, including UPD70F3424GJ(A)-GAE-AX, was engineered specifically for automotive body electronics demanding high integration, CAN networking, and functional safety readiness.

FAQ

What is the maximum operating frequency of the UPD70F3424GJ(A)-GAE-AX?

The UPD70F3424GJ(A)-GAE-AX operates at a maximum CPU clock frequency of 64 MHz, achieved using the internal peripheral PLL driven by the 32 MHz main oscillator. This frequency is fully supported across the specified operating voltage range (3.2 V to 5.5 V) and temperature range (−40°C to +125°C), enabling deterministic real-time response for automotive control loops.

Does the UPD70F3424GJ(A)-GAE-AX support CAN FD?

No, the UPD70F3424GJ(A)-GAE-AX implements three CAN 2.0B controllers compliant with ISO 11898-1:2003, supporting data rates up to 1 Mbps but not CAN FD features such as variable bit rate or extended data length. CAN FD capability requires newer RH850 or RA-family devices from Renesas.

How many A/D converter channels does the UPD70F3424GJ(A)-GAE-AX have, and what is their resolution?

The UPD70F3424GJ(A)-GAE-AX integrates a 12-channel successive approximation register (SAR) A/D converter with 10-bit resolution. Channels AIN0–AIN9 are assigned to pins P70–P79, while AIN10–AIN11 map to P710–P711, providing flexible analog sensing for battery monitoring, cabin temperature, and potentiometer inputs.

Is the UPD70F3424GJ(A)-GAE-AX pin-compatible with other V850E/DJ3 family members?

Yes, UPD70F3424GJ(A)-GAE-AX shares identical 144-pin QFP pinout with UPD70F3425GJ(A)-GAE-AX and UPD70F3426AGJ(A)-GAE-AX per Figure 2-2 of R01DS0049ED0210 Rev. 2.10. However, certain pins (e.g., CRXD2/CTXD2) are unimplemented in UPD70F3424GJ(A)-GAE-AX and must remain unconnected in PCB layout.

What debug interface does the UPD70F3424GJ(A)-GAE-AX provide?

The UPD70F3424GJ(A)-GAE-AX supports on-chip debugging via Renesas' E1/E20 emulator interface using dedicated debug pins (TCK, TDI, TDO, TMS, TRST). It enables full JTAG-based debugging including real-time trace, hardware breakpoints, and memory/register access without impacting CAN or timer peripheral operation.