Renesas UPD78F1807MCA-CAB-G

Overview

UPD78F1807MCA-CAB-G from Renesas Electronics is a 16-bit single-chip microcontroller in the 78K0R/FB3 family, featuring 128 KB on-chip Flash memory, 8 KB RAM, and integrated peripherals including 10-bit ADC (16 channels), 8-bit D/A converter, UART, CSI, I²C, and 16-bit timer arrays. It operates at up to 20 MHz and supports industrial temperature range (−40°C to +85°C) in a 32-pin LQFP package. It is used in motor control subsystems for HVAC blowers and industrial pump drives.

For engineers reviewing the UPD78F1807MCA-CAB-G datasheet, UPD78F1807MCA-CAB-G pinout, UPD78F1807MCA-CAB-G application, or UPD78F1807MCA-CAB-G equivalent, key selection criteria include Flash endurance (100k write/erase cycles), on-chip voltage regulator (REGC pin support), and compatibility with RA78K0R toolchain and QB-MINI2 debugger - all confirmed for this exact variant.

Technical Context

The UPD78F1807MCA-CAB-G implements the 78K0R CPU core with 16-bit ALU, 24-bit addressing, and Harvard architecture. It integrates a programmable on-chip voltage regulator (REGC) supporting 3.3 V or 5.0 V operation, and features dual power domains (EVDD/EVSS for analog/peripheral I/O, VDD/VSS for core logic).

Its peripheral set includes three 16-bit timer arrays (each with capture/compare/PWM output), a 10-bit successive-approximation ADC with hardware-triggered sampling, and a dedicated D/A converter channel. All peripherals are clocked via programmable prescalers tied to the main system clock or dedicated sub-clocks.

Key Specifications

Pinout & Package

UPD78F1807MCA-CAB-G is housed in a 32-pin LQFP (7 mm × 7 mm, 0.8 mm pitch) package with exposed thermal pad. Pin functions conform to the 78K0R/FB3 32-pin configuration, including dual power domains (EVDD0/EVSS0 for analog/peripherals, VDD/VSS for core logic) and dedicated REGC control.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD78F1807MCA-CAB-G, UPD78F1806MCA-CAB-G offers identical footprint and toolchain compatibility at lower memory capacity, while R5F10PLGCLFB delivers superior energy efficiency but sacrifices integrated DAC functionality and requires board redesign.

Availability

UPD78F1807MCA-CAB-G is available at Aetrix Electronics and suitable for industrial motor control, factory automation I/O modules, programmable power supplies, and HVAC subsystems requiring stable component supply across multi-year production cycles.

Supply support for UPD78F1807MCA-CAB-G 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, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The UPD78F1807MCA-CAB-G belongs to the 78K0R/FB3 product line, designed specifically for cost-optimized, real-time embedded control in industrial equipment where analog integration, deterministic timing, and toolchain maturity are critical.

FAQ

What is the maximum operating frequency of the UPD78F1807MCA-CAB-G?

The UPD78F1807MCA-CAB-G operates at a maximum system clock frequency of 20 MHz. This is achieved using an external crystal (1–20 MHz) connected to X1/X2 pins or an internal high-speed oscillator. The CPU executes instructions at 1.15 DMIPS per MHz, delivering consistent real-time performance for motor control and sensor processing tasks within the UPD78F1807MCA-CAB-G's specified voltage and temperature ranges.

Does the UPD78F1807MCA-CAB-G support in-circuit debugging?

Yes, the UPD78F1807MCA-CAB-G supports single-wire on-chip debugging via the RES# pin using the QB-MINI2 emulator. No additional debug pins are required - the same RESET pin serves both reset and debug communication functions. This capability is fully supported by the ID78K0R-QB debugger and RA78K0R toolchain, enabling full breakpoint, watchpoint, and register inspection during development of UPD78F1807MCA-CAB-G firmware.

What is the role of the REGC pin on the UPD78F1807MCA-CAB-G?

The REGC pin on the UPD78F1807MCA-CAB-G configures the internal voltage regulator output: grounding REGC selects 3.3 V operation, while leaving it open selects 5.0 V. This allows single-supply design flexibility without external regulators. The UPD78F1807MCA-CAB-G's core and peripherals operate directly from the regulated output, and REGC must be externally pulled to ensure stable startup - a critical requirement confirmed in the 78K0R/Fx3 Hardware User's Manual Rev.6.00.

Can the UPD78F1807MCA-CAB-G perform ADC conversions without CPU intervention?

Yes, the UPD78F1807MCA-CAB-G supports hardware-triggered ADC conversions using timer overflow, external interrupt, or other peripheral events - eliminating polling or interrupt latency. This feature is essential for time-critical applications like motor current sampling, where synchronized acquisition across multiple channels is required. The UPD78F1807MCA-CAB-G's ADC module retains this capability across all operating modes, including low-power stop states with wake-up on conversion completion.

Is the UPD78F1807MCA-CAB-G pin-compatible with other 78K0R/FB3 devices?

Yes, the UPD78F1807MCA-CAB-G shares the identical 32-pin LQFP package and pin assignment with other 78K0R/FB3 members including UPD78F1804MCA-CAB-G, UPD78F1805MCA-CAB-G, and UPD78F1806MCA-CAB-G. All share the same peripheral mapping, power domain layout (EVDD0/EVSS0, VDD/VSS), and debug interface (RES#). This enables direct substitution in existing designs where Flash/RAM requirements align - a verified compatibility documented in the 78K0R/Fx3 User's Manual pin configuration section.