Renesas UPD78F1001GA(S)-HAA-AX

Overview

UPD78F1001GA(S)-HAA-AX from Renesas Electronics is a 16-bit single-chip microcontroller in the 78K0R/KC3-L family, featuring 64 KB on-chip Flash memory, 4 KB RAM, and integrated peripherals including 10-bit ADC (8 channels), UART, I²C, and 16-bit timer arrays. It operates at up to 20 MHz with supply voltage range 2.7–5.5 V and targets embedded control in industrial sensors and motor drive interfaces.

For engineers reviewing the UPD78F1001GA(S)-HAA-AX datasheet, UPD78F1001GA(S)-HAA-AX pinout, UPD78F1001GA(S)-HAA-AX application, or UPD78F1001GA(S)-HAA-AX equivalent, key selection criteria include Flash endurance (100k write/erase cycles), operating temperature range (−40°C to +85°C), and compatibility with RA78K0R toolchain and QB-MINI2 debug interface.

Technical Context

The UPD78F1001GA(S)-HAA-AX implements the 78K0R CPU core with 16-bit ALU, 24-bit address space, and Harvard architecture with separate instruction/data buses. It supports real-time interrupt handling via 27 interrupt sources including external IRQs, timer overflows, and serial communication events.

On-chip peripheral integration includes a 10-bit successive-approximation ADC with sample-and-hold, dual UART channels supporting asynchronous mode with framing/error detection, and an I²C-compatible serial interface compliant with SMBus v2.0 specifications - all directly memory-mapped and controllable via SFRs.

Key Specifications

Pinout & Package

UPD78F1001GA(S)-HAA-AX is housed in a 48-pin LQFP package (7 mm × 7 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per Renesas User's Manual Rev.4.00 Section 1.4.1 and Section 2.1.1 for 40-/44-/48-pin KC3-L variants.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit microcontroller applications.

Compared with R5F100PLAFB#30 and STM8S208MBT6, the UPD78F1001GA(S)-HAA-AX delivers deterministic 16-bit timing control, higher ADC channel count with dedicated sample-and-hold, and native support for legacy 78K0R ecosystem tools - making it optimal for maintaining existing designs requiring precise motor or sensor timing.

Availability

UPD78F1001GA(S)-HAA-AX is available at Aetrix Electronics and suitable for industrial sensor nodes, brushless DC motor controllers, and smart power meter interfaces requiring stable component supply across extended product lifecycles.

Supply support for UPD78F1001GA(S)-HAA-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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power devices for industrial, automotive, and infrastructure markets.

The 78K0R/KC3-L product line delivers cost-optimized 16-bit MCUs targeting resource-constrained embedded systems requiring robust analog integration, low-latency interrupt response, and long-term industrial qualification.

FAQ

What is the maximum operating frequency of the UPD78F1001GA(S)-HAA-AX?

The UPD78F1001GA(S)-HAA-AX operates at a maximum CPU clock frequency of 20 MHz, achievable using the on-chip high-speed oscillator (HOCO) or external crystal up to 20 MHz. At this speed, the 78K0R core delivers 1.25 MIPS per MHz, resulting in 25 MIPS peak performance. System timing constraints such as Flash wait states and peripheral clock dividers must be configured per the User's Manual Rev.4.00 Section 4.1.1 to maintain stability.

Does the UPD78F1001GA(S)-HAA-AX support in-system programming (ISP)?

Yes, the UPD78F1001GA(S)-HAA-AX supports in-system programming via its on-chip bootloader, accessible through UART0 using the standard Renesas Flash Development Toolkit (FDT). No external programmer is required - only a UART-to-USB adapter and valid firmware binary. The bootloader occupies fixed 2 KB in upper Flash and remains protected during normal application execution unless explicitly invoked.

What are the ADC input voltage limits and reference options for the UPD78F1001GA(S)-HAA-AX?

The UPD78F1001GA(S)-HAA-AX ADC accepts input voltages from AVSS to AVREF, with AVREF configurable as either internal 2.5 V reference or externally supplied voltage (1.5–5.5 V). Absolute maximum input is VDD + 0.3 V, but sustained operation above AVREF causes clipping. Input channels AN0–AN7 are multiplexed across P10–P17, and the sample-and-hold circuit ensures accurate conversion even with high-impedance sensor sources.

How does the UPD78F1001GA(S)-HAA-AX handle reset sources and brown-out detection?

The UPD78F1001GA(S)-HAA-AX integrates a programmable voltage detector (PVD) that monitors VDD and triggers a reset when voltage drops below user-selectable thresholds (2.5 V, 2.7 V, 3.0 V, or 3.5 V). In addition to the external RESET pin, it supports power-on reset (POR), illegal opcode detection, and watchdog timeout as autonomous reset sources - all converging into a unified reset status register (RSR) for post-reset diagnostics.

Is the UPD78F1001GA(S)-HAA-AX pin-compatible with other members of the 78K0R/KC3-L family?

Yes, the UPD78F1001GA(S)-HAA-AX shares identical 48-pin LQFP pinout and electrical characteristics with μPD78F1000, μPD78F1002, and μPD78F1003 in the 78K0R/KC3-L family. Differences are limited to Flash size (64 KB vs. 32/96/128 KB) and RAM allocation - allowing direct substitution in hardware without layout changes, provided firmware accommodates memory map variations.