Renesas UPD78F1223GB-GAG-AX

Overview

UPD78F1223GB-GAG-AX from Renesas Electronics is a 16-bit single-chip microcontroller in the 78K0R/Ix3 family, featuring 128 KB on-chip Flash memory, 8 KB RAM, and a maximum operating frequency of 20 MHz. It integrates a 10-bit ADC with 16 channels, UART, I²C, and 16-bit timer arrays, targeting embedded control in industrial equipment and consumer appliances.

For engineers reviewing the UPD78F1223GB-GAG-AX datasheet, UPD78F1223GB-GAG-AX pinout, UPD78F1223GB-GAG-AX application, or UPD78F1223GB-GAG-AX equivalent, key selection criteria include Flash endurance (100,000 write/erase cycles), operating voltage range (2.7–5.5 V), and support for low-power stop modes with wake-up via external interrupt or RTC.

Technical Context

The UPD78F1223GB-GAG-AX implements the 78K0R CPU core with 16-bit architecture, Harvard memory organization, and instruction set compatible with earlier 78K0 devices. It supports multiple clock sources including on-chip oscillator (1 to 20 MHz), external crystal (up to 20 MHz), and sub-clock (32.768 kHz) for real-time clock operation.

On-chip peripherals include a 16-bit multifunction timer array unit (TAU) with capture/compare/PWM functions, a watchdog timer with independent clock, and a power-on reset circuit with adjustable delay. The device uses SuperFlash® technology for Flash memory, enabling single-cycle erase and program operations with data retention exceeding 20 years.

Key Specifications

Pinout & Package

UPD78F1223GB-GAG-AX is housed in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) package with exposed thermal pad. Pin assignments follow the 78K0R/ID3 group layout defined in Renesas User's Manual U19678EJ1V1UD.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD78F1223GB-GAG-AX, R5F10PLGKSP#V0 trades Flash capacity and RTC for superior low-power performance, while UPD78F1235GB-GAG-AX extends memory and adds CAN without altering pinout - making it a direct upgrade path for field-deployed designs needing enhanced connectivity.

Availability

UPD78F1223GB-GAG-AX is available at Aetrix Electronics and suitable for industrial motor control, smart home appliance development, and factory automation sensor nodes requiring stable component supply and long-term lifecycle support.

Supply support for UPD78F1223GB-GAG-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 Japan, specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The 78K0R/Ix3 product line delivers high-integration 16-bit MCUs optimized for cost-sensitive, reliability-critical embedded control applications where Flash endurance, analog precision, and real-time responsiveness are essential.

FAQ

What is the maximum operating frequency of the UPD78F1223GB-GAG-AX?

The UPD78F1223GB-GAG-AX operates at up to 20 MHz when powered at 4.5–5.5 V, and up to 16 MHz at 3.0–4.5 V. Its internal high-speed oscillator supports frequencies from 1 to 20 MHz, and an external crystal up to 20 MHz can be used for higher timing accuracy. The UPD78F1223GB-GAG-AX datasheet specifies these limits under DC characteristics and AC timing parameters sections.

Does the UPD78F1223GB-GAG-AX support in-system programming?

Yes, the UPD78F1223GB-GAG-AX supports in-system programming via its on-chip bootloader using UART or dedicated serial interface. Flash memory can be reprogrammed without removing the device from the target board, and the UPD78F1223GB-GAG-AX includes hardware security features to prevent unauthorized access during programming.

What is the ADC resolution and channel count on the UPD78F1223GB-GAG-AX?

The UPD78F1223GB-GAG-AX integrates a 10-bit successive approximation ADC with 16 input channels. It supports both single-ended and differential input modes, programmable sampling time, and hardware trigger sources including timers and RTC. This ADC configuration is confirmed in the electrical specifications and peripheral function sections of the UPD78F1223GB-GAG-AX User's Manual U19678EJ1V1UD.

Is the UPD78F1223GB-GAG-AX pin-compatible with other 78K0R/Ix3 devices?

The UPD78F1223GB-GAG-AX shares the same 100-pin LQFP package and pinout with other 78K0R/ID3 group members such as UPD78F1224GB-GAG-AX and UPD78F1225GB-GAG-AX. However, it is not pin-compatible with 78K0R/IB3, IC3, or IE3 variants due to differences in peripheral allocation and I/O mapping - verified in the Pin Configuration chapter of the UPD78F1223GB-GAG-AX documentation.

What low-power modes does the UPD78F1223GB-GAG-AX support?

The UPD78F1223GB-GAG-AX offers HALT, STOP, and SNOOZE low-power modes. In STOP mode, current consumption drops to less than 1.0 μA (typical) with RTC and RAM retention enabled. Wake-up is supported via external interrupt, RTC alarm, or serial interface activity - all documented in the Power Supply and Reset section of the UPD78F1223GB-GAG-AX User's Manual.