Renesas UPD78F0887GB(A)-GAH-AX

Overview

UPD78F0887GB(A)-GAH-AX from Renesas Electronics is an 8-bit single-chip microcontroller in the 78K0/FE2 family, featuring 128 KB on-chip Flash memory, 8 KB RAM, and a 20 MHz max CPU clock. It integrates 10-bit A/D converter (8 channels), UART, I²C, and 16-bit timer arrays for embedded control in industrial and consumer systems.

For engineers reviewing the UPD78F0887GB(A)-GAH-AX datasheet, UPD78F0887GB(A)-GAH-AX pinout, UPD78F0887GB(A)-GAH-AX application, or UPD78F0887GB(A)-GAH-AX equivalent, key selection criteria include Flash endurance (100,000 write cycles), A/D conversion time (1.2 μs typical), operating voltage range (2.7–5.5 V), and QFP-100 package compatibility with legacy 78K0 designs.

Technical Context

The UPD78F0887GB(A)-GAH-AX implements the 78K0 CPU core with 16-bit addressing, supporting up to 24-bit linear addressing via bank switching. It uses SuperFlash® technology licensed from Silicon Storage Technology for reliable in-system programming and 10-year data retention at 85°C.

Peripherals include three 16-bit timer arrays (each with capture/compare/PWM), a watchdog timer with independent clock, and dual serial interfaces (UART + I²C) with programmable baud rates. The A/D converter supports simultaneous sampling on up to two channels with internal reference voltage (2.5 V).

Key Specifications

Pinout & Package

UPD78F0887GB(A)-GAH-AX is housed in a 100-pin QFP (GAH) package with 0.65 mm lead pitch and 14 mm × 20 mm body size. Pin functions conform to the 78K0/FE2 family layout, including dedicated reset, clock input, power/ground pairs, and multiplexed I/O ports.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit microcontroller applications.

Compared with R5F100LEAFB#30 and UPD78F0537GC-8EU-A, the UPD78F0887GB(A)-GAH-AX provides higher Flash density, integrated A/D reference, and concurrent UART/I²C - making it optimal for applications requiring firmware flexibility, analog accuracy, and multi-sensor communication without external bridges.

Availability

UPD78F0887GB(A)-GAH-AX is available at Aetrix Electronics and suitable for industrial motor control, smart home sensor hubs, factory automation I/O modules, medical diagnostic instruments, and portable test equipment requiring stable component supply and long-term lifecycle support.

Supply support for UPD78F0887GB(A)-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 formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power solutions.

The UPD78F0887GB(A)-GAH-AX belongs to the 78K0/Fx2 family, designed specifically for cost-effective, high-reliability embedded control in industrial, consumer, and medical equipment where Flash endurance, analog integration, and debug capability are critical.

FAQ

What is the maximum operating frequency of the UPD78F0887GB(A)-GAH-AX?

The UPD78F0887GB(A)-GAH-AX supports a maximum CPU clock frequency of 20 MHz. This is achieved using either an external crystal (1–20 MHz) or internal high-speed oscillator with optional 2x clock multiplier. At 20 MHz, the device executes instructions in as little as 50 ns, enabling tight real-time control loops for motor and power applications. The UPD78F0887GB(A)-GAH-AX maintains timing compliance across its full 2.7–5.5 V operating voltage range.

Does the UPD78F0887GB(A)-GAH-AX include an internal voltage reference for the A/D converter?

Yes, the UPD78F0887GB(A)-GAH-AX integrates a factory-trimmed 2.5 V internal reference voltage for the 10-bit A/D converter. This eliminates the need for external reference ICs in most applications and ensures consistent conversion accuracy across temperature and supply voltage variations. The UPD78F0887GB(A)-GAH-AX allows software selection between internal 2.5 V, external AVREF, or VDD as the A/D reference source.

Is the UPD78F0887GB(A)-GAH-AX pin-compatible with other 78K0/FE2 microcontrollers?

Yes, the UPD78F0887GB(A)-GAH-AX shares the same 100-pin QFP (GAH) package and pinout with other 78K0/FE2 family members such as UPD78F0888GB(A)-GAH-AX and UPD78F0889GB(A)-GAH-AX. This allows drop-in replacement within the FE2 series when Flash size, RAM, or peripheral count differences align with design requirements. The UPD78F0887GB(A)-GAH-AX maintains identical power, reset, clock, and I/O pin assignments across this variant group.

What debug capabilities does the UPD78F0887GB(A)-GAH-AX support?

The UPD78F0887GB(A)-GAH-AX includes a full on-chip debug interface compliant with Renesas' standard debug protocol. It supports real-time memory/register access, hardware breakpoints, step execution, and trace buffer capture - all without requiring external emulator hardware. Development tools like QB-MINI2 and ID78K0-QB integrate directly with the UPD78F0887GB(A)-GAH-AX's debug circuit for seamless firmware validation and field diagnostics.

What is the Flash memory endurance specification for the UPD78F0887GB(A)-GAH-AX?

The UPD78F0887GB(A)-GAH-AX guarantees 100,000 erase/write cycles for its 128 KB on-chip Flash memory, with data retention specified for 10 years at 85°C ambient temperature. This endurance rating applies to both block erase and byte-write operations supported by the device's self-programming library. The UPD78F0887GB(A)-GAH-AX also supports wear-leveling firmware implementation to extend effective lifetime in high-update-rate applications.