Renesas UPD78F1164GF(S)-GAS-AX

Overview

UPD78F1164GF(S)-GAS-AX from Renesas Electronics is a 16-bit single-chip microcontroller in the 78K0R/KG3 family, featuring 128 KB on-chip Flash memory, 8 KB RAM, and integrated peripherals including 10-bit ADC (16 channels), UART, I²C, and 16-bit timer arrays. It operates at up to 20 MHz with supply voltage range of 2.7–5.5 V and targets embedded control in industrial sensors and motor-driven appliances.

For engineers reviewing the UPD78F1164GF(S)-GAS-AX datasheet, UPD78F1164GF(S)-GAS-AX pinout, UPD78F1164GF(S)-GAS-AX application, or UPD78F1164GF(S)-GAS-AX equivalent, key selection criteria include Flash endurance (100,000 write/erase cycles), operating temperature range (−40°C to +85°C), and support for on-chip debug via single-wire interface - all critical for cost-sensitive, long-lifecycle industrial firmware deployments.

Technical Context

The UPD78F1164GF(S)-GAS-AX implements the 78K0R CPU core with 16-bit architecture, Harvard memory structure, and instruction set compatible with earlier 78K0 devices. It integrates a programmable low-voltage detection circuit (LVD), watchdog timer with independent clock source, and power-on reset (POR) with adjustable delay.

Peripherals are organized into functional groups: analog (10-bit ADC with sample-and-hold, dual AVREF inputs), serial (UART0/1 with LIN support, I²C master/slave), and timing (eight 16-bit reload timers, real-time clock option via sub-clock input). All modules are controlled via dedicated SFRs mapped in the extended special function register (2nd SFR) area.

Key Specifications

Pinout & Package

This device is housed in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) package with exposed thermal pad (GAS suffix), supporting reflow soldering and thermal dissipation up to 1.5 W in standard PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD78F1164GF(S)-GAS-AX, R5F10PLGAFP#V0 offers reduced Flash density and fewer analog features but lower unit cost, while MB95F622KPMC-GSE1 provides ARM compatibility and higher performance at the expense of increased power and layout complexity - making UPD78F1164GF(S)-GAS-AX optimal for balanced industrial control where Flash endurance, analog integration, and thermal robustness are prioritized.

Availability

UPD78F1164GF(S)-GAS-AX is available at Aetrix Electronics and suitable for industrial sensor nodes, smart appliance control, and programmable power supplies requiring stable component supply across multi-year production cycles.

Supply support for UPD78F1164GF(S)-GAS-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 headquartered in Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The 78K0R/KG3 product line was designed specifically for cost-sensitive, high-reliability industrial control applications requiring long-term supply stability, Flash endurance, and integrated analog peripherals - with UPD78F1164GF(S)-GAS-AX representing its highest-density variant in the 100-pin LQFP thermal package.

FAQ

What is the maximum operating frequency of the UPD78F1164GF(S)-GAS-AX?

The UPD78F1164GF(S)-GAS-AX supports a maximum system clock frequency of 20 MHz when driven by an external crystal oscillator or the internal high-speed oscillator. This frequency is maintained across the full operating voltage range (2.7–5.5 V) and temperature range (−40°C to +85°C), enabling deterministic real-time response in motor control and sensor acquisition loops. The UPD78F1164GF(S)-GAS-AX achieves zero-wait-state execution at this speed due to its optimized bus architecture and on-chip SRAM.

Does the UPD78F1164GF(S)-GAS-AX include an on-chip voltage regulator?

Yes, the UPD78F1164GF(S)-GAS-AX integrates an on-chip 3.3 V regulator controlled via the REGC pin. When enabled, it powers the core logic section independently from the I/O supply (EVDD0/EVDD1), allowing mixed-voltage operation (e.g., 5 V I/O with 3.3 V core). A 1 μF ceramic capacitor must be placed between REGC and EVSS0 for stability. This feature simplifies power design and improves noise immunity in the UPD78F1164GF(S)-GAS-AX compared to non-regulator variants.

How many analog input channels does the ADC in the UPD78F1164GF(S)-GAS-AX support?

The UPD78F1164GF(S)-GAS-AX features a 10-bit successive-approximation ADC with 16 selectable input channels (AN0 through AN15), accessible via ports P10–P17 and P140–P145. These channels can be scanned in sequence or triggered individually, with conversion results stored in dedicated SFRs. The UPD78F1164GF(S)-GAS-AX also supports dual reference inputs (AVREF0 and AVREF1), enabling differential or ratiometric measurements critical for precision transducer interfaces.

Is the UPD78F1164GF(S)-GAS-AX pin-compatible with other members of the 78K0R/KG3 family?

The UPD78F1164GF(S)-GAS-AX shares the same 100-pin LQFP package and pin assignment with other 78K0R/KG3 devices in the GF(S) variant group (e.g., UPD78F1162GF(S)-GAS-AX, UPD78F1163GF(S)-GAS-AX), enabling hardware reuse across different Flash/RAM configurations. However, it is not pin-compatible with GA or GB suffix variants, which use different package types or pinouts. Always verify port mapping and peripheral enable registers in firmware when migrating to the UPD78F1164GF(S)-GAS-AX from lower-density siblings.

What debug interface does the UPD78F1164GF(S)-GAS-AX support?

The UPD78F1164GF(S)-GAS-AX supports single-wire debug (SWD) via the RESB pin, enabling full-featured on-chip debugging including breakpoint setting, register inspection, and Flash programming without requiring dedicated debug headers or JTAG adapters. This SWD interface is fully supported by Renesas' CS+ and e² studio IDEs. The UPD78F1164GF(S)-GAS-AX does not support JTAG or older FINE interface protocols - SWD is the sole standardized debug path.