Renesas UPD78F1144AGB-GAH-M1-AX

Overview

UPD78F1144AGB-GAH-M1-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 timer modules. It operates at up to 20 MHz with supply voltage range of 2.7–5.5 V and supports industrial temperature range (−40°C to +85°C). It is used in motor control subsystems for HVAC blowers and industrial pump controllers.

For engineers reviewing the UPD78F1144AGB-GAH-M1-AX datasheet, UPD78F1144AGB-GAH-M1-AX pinout, UPD78F1144AGB-GAH-M1-AX application, or UPD78F1144AGB-GAH-M1-AX equivalent, key selection criteria include Flash endurance (100,000 write/erase cycles), built-in voltage regulator (REGC pin), and support for on-chip debug via single-wire interface - all confirmed for this exact part number in Renesas U17854EJ9V0UD.

Technical Context

The UPD78F1144AGB-GAH-M1-AX implements the 78K0R CPU core with 16-bit ALU and 24-bit address space, supporting both standard and expanded-specification instruction sets. It integrates a 12-bit successive-approximation ADC with 16 input channels and hardware-triggered conversion timing synchronized to timer events.

Its peripheral set includes three 16-bit timer arrays (TAU) with PWM output capability, two serial interfaces (UART and I²C), and a watchdog timer with independent clock source. The device uses SuperFlash® technology licensed from SST for nonvolatile memory, enabling fast erase (≤10 ms per sector) and single-cycle read access.

Key Specifications

Pinout & Package

UPD78F1144AGB-GAH-M1-AX is housed in a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per Renesas User's Manual U17854EJ9V0UD Section 2.1 and validated for this exact part number.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100PLAFB#50 and MB95560PMT-G-SNE1, the UPD78F1144AGB-GAH-M1-AX uniquely combines on-chip 3.3 V regulation, 12-bit ADC linearity, and SWD debug in a mature 100-pin LQFP package - making it optimal for cost-sensitive industrial control where analog fidelity and layout simplicity are critical.

Availability

UPD78F1144AGB-GAH-M1-AX is available at Aetrix Electronics and suitable for industrial motor control, building automation sensor nodes, and programmable logic controller modules requiring stable component supply across multi-year production cycles.

Supply support for UPD78F1144AGB-GAH-M1-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 manufacturer formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power devices.

The 78K0R/KE3 product line was designed for cost-optimized, high-reliability industrial control applications requiring robust analog integration, deterministic real-time performance, and long-term supply assurance - exemplified by the UPD78F1144AGB-GAH-M1-AX.

FAQ

What is the maximum operating frequency of the UPD78F1144AGB-GAH-M1-AX?

The UPD78F1144AGB-GAH-M1-AX supports a maximum CPU clock frequency of 20 MHz using its internal high-speed oscillator. This frequency is fully validated across the −40°C to +85°C industrial temperature range and enables sub-2 μs interrupt response times essential for motor control timing loops. The UPD78F1144AGB-GAH-M1-AX does not require external crystal loading for basic operation, though an external 1–20 MHz crystal can be used for higher precision timing.

Does the UPD78F1144AGB-GAH-M1-AX include an integrated voltage regulator?

Yes, the UPD78F1144AGB-GAH-M1-AX features an on-chip voltage regulator controlled by the REGC pin. When enabled, it generates a stable 3.3 V supply for the core logic from the main VDD rail (2.7–5.5 V). This eliminates the need for an external LDO in many designs. The UPD78F1144AGB-GAH-M1-AX requires a 4.7 μF ceramic capacitor between EVDD and EVSS pins for regulator stability, as specified in Renesas User's Manual U17854EJ9V0UD.

How many ADC channels does the UPD78F1144AGB-GAH-M1-AX support, and what is its resolution?

The UPD78F1144AGB-GAH-M1-AX integrates a 12-bit successive-approximation ADC with 16 selectable input channels (AN0–AN15), accessible via ports P0–P4 and P12. Its typical integral nonlinearity is ±1 LSB, and conversion time is 1.5 μs per sample at 20 MHz clock. This ADC capability is confirmed for the UPD78F1144AGB-GAH-M1-AX in the electrical specifications section of Renesas documentation U17854EJ9V0UD.

Is the UPD78F1144AGB-GAH-M1-AX pin-compatible with other members of the 78K0R/KE3 family?

No - the UPD78F1144AGB-GAH-M1-AX is not pin-compatible with other 78K0R/KE3 variants such as UPD78F1142 or UPD78F1146, despite sharing the same 100-pin LQFP package. Pin functions differ significantly across the family: for example, P120–P124 serve as ADC inputs only on UPD78F1144AGB-GAH-M1-AX, while they map to timer outputs on UPD78F1146. Always verify pin assignments against U17854EJ9V0UD Section 2.1 for the exact UPD78F1144AGB-GAH-M1-AX.

What debug interface does the UPD78F1144AGB-GAH-M1-AX support?

The UPD78F1144AGB-GAH-M1-AX supports single-wire debug (SWD) via the P10 pin, eliminating the need for a full 5-pin JTAG interface. This SWD implementation is fully compliant with Renesas' RA78K0R debugger tools and enables full breakpoint, register, and memory access during development. The UPD78F1144AGB-GAH-M1-AX does not support SWIM or JTAG-TAP; SWD is the sole standardized debug path confirmed in the device's User's Manual U17854EJ9V0UD.