Microchip Technology AC244047

Overview

AC244047 from Microchip Technology is a high-performance 8-bit RISC flash microcontroller featuring an enhanced mid-range CPU core, 8 KB program memory, 1024 bytes RAM, and 256 bytes data EEPROM. It integrates a 10-bit ADC with 12 channels, two rail-to-rail comparators, fixed voltage reference (1.024V/2.048V/4.096V), and dual ECCP modules for motor control. It targets low-power embedded applications such as sensor nodes and smart peripherals.

For engineers reviewing the AC244047 datasheet, AC244047 pinout, AC244047 application, or AC244047 equivalent, key selection considerations include its XLP ultra-low-power operation (20 nA Sleep current), flexible oscillator architecture (32 MHz internal ±1% calibrated), dual MSSP modules supporting I²C/SPI, EUSART with auto-baud, and mTouch™ capacitive sensing support across 12 channels.

Technical Context

The AC244047 implements an enhanced mid-range 8-bit CPU with 49 instructions, 16-level hardware stack with overflow/underflow detection, automatic interrupt context saving, and dual 16-bit File Select Registers enabling unified linear addressing of program and data memory up to 32 KB and 1 KB respectively.

Its peripheral set includes four independent timers (Timer0/1/2/4/6), two Enhanced CCP modules with PWM steering and auto-shutdown, two MSSP modules with SMBus/PMBus compatibility, and a Data Signal Modulator supporting carrier-based signal generation - all configurable via APFCON registers for flexible pin mapping.

Key Specifications

Pinout & Package

AC244047 is available in 18-pin PDIP/SOIC, 20-pin SSOP, and 28-pin QFN/UQFN/VQFN packages. All variants share identical pin functionality mapping per Table 1-2 of DS40001453G, with peripheral functions remappable via APFCON registers.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit microcontroller applications.

Compared with PIC16F1827-I/SS, AC244047 delivers higher Flash/RAM and ECCP flexibility at similar price; versus PIC16F18855-I/SP, it trades CIP/PPS complexity for lower BOM cost and proven XLP power efficiency in constrained environments.

Availability

AC244047 is available at Aetrix Electronics and suitable for industrial sensor nodes, medical wearables, motor control interfaces, and IoT edge peripherals requiring stable component supply and long-term lifecycle assurance.

Supply support for AC244047 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

Microchip Technology Inc. is a leading provider of microcontrollers, analog, FPGA, and connectivity solutions, serving automotive, industrial, consumer, and communications markets since 1989.

AC244047 belongs to the PIC16(L)F1847 family - a line of XLP-enabled 8-bit MCUs designed for ultra-low-power embedded control in space- and energy-constrained applications.

FAQ

What is the maximum operating frequency of the AC244047?

The AC244047 supports a maximum system clock frequency of 32 MHz, achievable via its internal precision oscillator (±1% typical calibration), external crystal (up to 32 MHz in HS mode), or external clock source. The 4× PLL allows multiplication of lower-frequency sources to reach full speed while maintaining timing accuracy and low jitter.

Does AC244047 support in-circuit debugging without additional hardware?

Yes, AC244047 supports full in-circuit debug (ICD) using only two pins - RB6 (ICSPCLK) and RB7 (ICSPDAT). No external debugger header is required; standard Microchip MPLAB® ICD 4 or PICkit™ 4 tools connect directly for breakpoints, register inspection, and real-time variable monitoring during development.

Can AC244047 operate from a single 1.8V supply?

Yes, AC244047 (as PIC16LF1847 variant) is fully specified for 1.8V–3.6V operation. At 1.8V, it delivers 20 nA Sleep current, 300 nA WDT operation, and 65 µA/MHz active current - making it suitable for coin-cell or energy-harvesting systems where ultra-low-voltage operation is mandatory.

How many PWM outputs does AC244047 provide, and what are their capabilities?

AC244047 provides four CCP modules (CCP1–CCP4), including two Enhanced CCP (ECCP1/ECCP2) units. Each ECCP supports complementary PWM with programmable dead time, auto-shutdown on fault (FLT0), and PWM steering - enabling full-bridge, half-bridge, and three-phase motor control topologies directly from the MCU.

Is the ADC in AC244047 capable of operating during Sleep mode?

Yes, the 10-bit ADC in AC244047 supports conversion during Sleep mode. This allows wake-on-threshold events - for example, waking from 20 nA Sleep upon detecting a voltage crossing via comparator or ADC result - minimizing system power while maintaining responsive sensing.