Renesas UPD78F1184AGJ-GAE-AX

Overview

UPD78F1184AGJ-GAE-AX from Renesas Electronics is a 16-bit single-chip microcontroller in the 78K0R/KE3 family, featuring 128 KB on-chip Flash memory, 8 KB RAM, and integrated peripherals including 12-bit ADC, UART, I²C, and 16-bit timer arrays. It operates at up to 20 MHz with supply voltage range of 2.7 V to 5.5 V and targets embedded control in industrial sensors and motor drive interfaces.

For engineers reviewing the UPD78F1184AGJ-GAE-AX datasheet, UPD78F1184AGJ-GAE-AX pinout, UPD78F1184AGJ-GAE-AX application, or UPD78F1184AGJ-GAE-AX equivalent, key selection considerations include its 100-pin LQFP package, Flash endurance (100,000 write/erase cycles), operating temperature range (−40°C to +85°C), and support for on-chip debug via FINE interface.

Technical Context

The UPD78F1184AGJ-GAE-AX implements the 78K0R CPU core with 16-bit ALU, 24-bit address space, and Harvard architecture separating program and data memory. It integrates a programmable low-voltage detection circuit (LVD) with 3 selectable thresholds and supports two power-saving modes: HALT and STOP.

Peripheral integration includes a 12-channel 12-bit successive-approximation ADC with built-in sample-and-hold, four independent 16-bit reload timers with input capture/output compare capability, and dual UART channels supporting asynchronous communication with framing error detection and break signal generation.

Key Specifications

Pinout & Package

UPD78F1184AGJ-GAE-AX is housed in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions are defined per Renesas User's Manual U17854EJ9V0UD, covering 8 general-purpose I/O ports (P0–P7), analog inputs (AN0–AN11), serial interfaces (UART0/1, I²C), reset, clock, and power domains (VDD/EVDD, VSS/EVSS).

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD78F1184AGJ-GAE-AX, R5F100LEAFB#30 offers newer RL78 architecture and lower active power but sacrifices Flash capacity and integrated voltage monitoring; UPD78F1154GB-GAH-AX delivers identical peripheral compatibility and pin alignment at lower memory density, enabling seamless migration within the same hardware platform.

Availability

UPD78F1184AGJ-GAE-AX is available at Aetrix Electronics and suitable for industrial sensor nodes, BLDC motor controllers, and smart energy meter interfaces requiring stable component supply across multi-year production cycles.

Supply support for UPD78F1184AGJ-GAE-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 specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The 78K0R/KE3 product line delivers high-integration 16-bit MCUs optimized for cost-sensitive, real-time embedded control in factory automation, appliance, and sensor-edge applications.

FAQ

What is the maximum operating frequency of the UPD78F1184AGJ-GAE-AX?

The UPD78F1184AGJ-GAE-AX supports a maximum system clock frequency of 20 MHz when using the on-chip high-speed oscillator or an external crystal. This frequency is maintained across the full operating voltage range (2.7 V to 5.5 V) and temperature range (−40°C to +85°C), enabling deterministic real-time response in motor control and sensor acquisition loops. The UPD78F1184AGJ-GAE-AX datasheet specifies timing parameters such as instruction cycle time (50 ns min) and peripheral setup/hold times referenced to this 20 MHz base.

Does the UPD78F1184AGJ-GAE-AX support in-system programming (ISP)?

Yes, the UPD78F1184AGJ-GAE-AX supports in-system programming via its on-chip FINE debug interface and integrated Flash memory controller. Using Renesas' PG-FP5 programmer or compatible tools, firmware updates can be performed without removing the device from the PCB. The UPD78F1184AGJ-GAE-AX includes ROM-resident self-programming libraries (Type01) that enable secure in-application programming (IAP) for field upgrades, provided sufficient RAM is reserved for the programming routine and erase/write operations are executed under controlled voltage and temperature conditions.

What are the power supply requirements for the UPD78F1184AGJ-GAE-AX?

The UPD78F1184AGJ-GAE-AX requires two primary supply domains: VDD/EVDD (2.7 V to 5.5 V) for digital logic and EVDD for I/O drivers, and AVDD/AVSS for analog circuits including the 12-bit ADC and voltage reference. A 1.0 μF capacitor must be connected to the REGC pin to stabilize the internal regulator. The UPD78F1184AGJ-GAE-AX draws 12 mA typical at 20 MHz, 3.3 V, and supports ultra-low-power HALT/STOP modes down to 0.7 μA, making it suitable for battery-backed industrial monitoring applications.

How many ADC channels does the UPD78F1184AGJ-GAE-AX have, and what is their resolution?

The UPD78F1184AGJ-GAE-AX integrates a 12-bit successive-approximation ADC with 12 configurable input channels (AN0–AN11), mapped across Ports P2, P4, and P5. It achieves ±1 LSB integral nonlinearity (INL) and 1.2 μs conversion time per sample. The ADC supports software/start-triggered conversions, continuous scan mode, and built-in sample-and-hold - all accessible without CPU intervention via dedicated peripheral control registers. This ADC capability is fully documented in the UPD78F1184AGJ-GAE-AX User's Manual U17854EJ9V0UD.

Is the UPD78F1184AGJ-GAE-AX pin-compatible with other devices in the 78K0R/KE3 family?

The UPD78F1184AGJ-GAE-AX shares the same 100-pin LQFP package and pin assignment with several members of the 78K0R/KE3 family, including UPD78F1154GB-GAH-AX and UPD78F1146AGJ-GAE-AX. However, pin compatibility does not guarantee full functional equivalence: differences in Flash size, RAM allocation, and peripheral enablement (e.g., number of UART channels or timer modules) require firmware validation. The UPD78F1184AGJ-GAE-AX pinout is explicitly defined in Section 1.5 of Renesas User's Manual U17854EJ9V0UD and must be cross-checked against target variant datasheets before hardware reuse.