Renesas UPD70F3826GB(R)-GAH-AX

Overview

UPD70F3826GB(R)-GAH-AX from Renesas is a 32-bit V850ES/JE3-E single-chip microcontroller with 64 KB Flash, 32 KB RAM (including 16 KB data RAM), 26 I/O pins, 10-bit A/D converter (10 channels), Ethernet controller, USB function controller, and 54 internal interrupt sources. It operates at 2.85–3.6 V and −40 to +85°C, targeting embedded networked peripherals such as printers and home audio systems.

For engineers reviewing the UPD70F3826GB(R)-GAH-AX datasheet, UPD70F3826GB(R)-GAH-AX pinout, UPD70F3826GB(R)-GAH-AX application, or UPD70F3826GB(R)-GAH-AX equivalent, key selection criteria include its 64-pin LQFP package, integrated Ethernet PHY interface (P1MDIO/P1MDC/P1COL/P1CRS), real-time output function (6-bit), and CAN absence - distinguishing it from UPD70F3829GB(R)-GAH-AX.

Technical Context

The UPD70F3826GB(R)-GAH-AX implements the V850ES architecture with 32×32-bit general-purpose registers, hardware 16×16→32-bit multiplier, saturation instructions, and bit manipulation support. Its CPU executes instructions in one clock cycle at up to 50 MHz (20 ns min), enabled by PLL-based clock generation (fX = 3–6.25 MHz → fXX = 24–50 MHz).

Peripheral integration includes a 4-channel DMA controller targeting on-chip RAM and peripheral I/O, 5-channel 16-bit timer/event counter AA (TAA) with interval capability, 4-channel 16-bit interval timer M (TMM), and dedicated real-time counter (RTC) and watchdog timer (WDT). No motor control or CAN functions are implemented in this JE3-E variant.

Key Specifications

Pinout & Package

Package: 64-pin plastic LQFP (fine pitch, 10 × 10 mm), RoHS-compliant lead-free construction.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD70F3826GB(R)-GAH-AX, UPD70F3827GB(R)-GAH-AX offers double Flash/RAM for scalable firmware, while UPD70F3830GK(R)-GAK-AX trades compactness for expanded I/O, motor control, and interrupt capacity - making each optimal for distinct BOM cost vs. feature trade-offs.

Availability

UPD70F3826GB(R)-GAH-AX is available at Aetrix Electronics and suitable for printer control units, home audio network nodes, and industrial Ethernet gateways requiring stable component supply across long-life production cycles.

Supply support for UPD70F3826GB(R)-GAH-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 V850ES/JE3-E product line delivers deterministic real-time performance for networked embedded systems, emphasizing Ethernet connectivity, low-power operation, and code efficiency in resource-constrained environments.

FAQ

What is the maximum operating frequency of the UPD70F3826GB(R)-GAH-AX?

The UPD70F3826GB(R)-GAH-AX achieves a minimum instruction execution time of 20 ns, corresponding to a maximum system clock frequency of 50 MHz when using the PLL mode (fX = 3–6.25 MHz multiplied by 8). This frequency is sustained across the full operating voltage range (2.85–3.6 V) and temperature range (−40 to +85°C).

Does the UPD70F3826GB(R)-GAH-AX include a CAN controller?

No, the UPD70F3826GB(R)-GAH-AX does not include a CAN controller. CAN functionality is only present in specific variants within the family: UPD70F3829GB(R)-GAH-AX (JE3-E), UPD70F3833GK(R)-GAK-AX (JF3-E), and UPD70F3837GC(R)-UEU-AX (JG3-E). The UPD70F3826GB(R)-GAH-AX omits CAN to reduce cost and complexity for Ethernet-focused applications.

What debug interfaces are supported by the UPD70F3826GB(R)-GAH-AX?

The UPD70F3826GB(R)-GAH-AX supports Renesas MINICUBE and MINICUBE2 debug adapters via four dedicated pins: DDI (debug data input), DDO (debug data output), DCK (debug clock), and DRST (debug reset). These enable non-intrusive real-time debugging, flash programming, and breakpoint execution without requiring JTAG TAP logic.

How is the Ethernet PHY interfaced on the UPD70F3826GB(R)-GAH-AX?

The UPD70F3826GB(R)-GAH-AX integrates a Media Access Controller (MAC) but requires an external PHY chip. It connects via the standard MII interface using dedicated pins: P1MDIO (management data I/O), P1MDC (management clock), P1COL (collision detect), P1CRS (carrier sense), and the eight-bit receive/transmit data bus (P1RXD0–P1RXD3, P1TXD0–P1TXD3).

What power-saving modes are available on the UPD70F3826GB(R)-GAH-AX?

The UPD70F3826GB(R)-GAH-AX supports six power-save modes: HALT (CPU stopped, peripherals active), IDLE1/IDLE2 (reduced clock to CPU/peripherals), STOP (all clocks halted except subclock), subclock (RTC running on 32.768 kHz), and sub-IDLE (subclock + selected peripherals). In STOP mode, current consumption drops below 1 μA, enabling battery-backed operation for extended periods.