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Microchip Technology AC244054
- Part No.:
- AC244054
- Manufacturer:
- Microchip Technology
- Category:
- Accessories
- Package:
- Datasheet:
-
AC244054.pdf
- Description:
- PIC16LF1459-ICE PROCR EXT PAK
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
AC244054 from Microchip Technology is a 14-pin, 8-bit Flash USB microcontroller (PIC16LF1454) with XLP ultra-low-power operation, 8 KB program memory, 1024 bytes RAM, and integrated USB 2.0 Full/Low-Speed interface - used in battery-powered human-interface devices requiring self-tuned USB connectivity without external crystal.
For engineers reviewing the AC244054 datasheet, AC244054 pinout, AC244054 application, or AC244054 equivalent, key selection criteria include its 25 nA Sleep current at 1.8 V, factory-calibrated 16 MHz internal oscillator (±0.25%), USB self-tuning capability, and 11 I/O pins with IOC and programmable weak pull-ups.
Technical Context
The AC244054 implements Microchip's enhanced mid-range RISC CPU with 49 instructions and 16-level hardware stack, supporting interrupt context save/restore. It integrates a USB SIE compliant with USB 2.0, dual 10-bit PWM modules, Timer0/1/2, and MSSP supporting SPI/I²C with SMBus compatibility.
Oscillator flexibility includes selectable 3× or 4× PLL for 48 MHz operation, clock switching between primary/secondary/internal sources, and CLKOUT/Clock Reference output. Analog features are omitted per PIC16(L)F1454 specification - no ADC, DAC, comparators, or FVR are present on this variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | 8-bit RISC CPU with 49 instructions, 14 KB linear program addressing |
| USB Interface | USB 2.0-compliant SIE supporting Low Speed (1.5 Mbps) and Full Speed (12 Mbps) with self-tuning from host |
| Memory | 8192-word Flash program memory, 1024-byte SRAM, 128-byte high-endurance EEPROM |
| Power Efficiency | 25 nA Sleep current @ 1.8 V; 25 µA/MHz active current @ 1.8 V |
| Oscillator | Factory-calibrated 16 MHz internal oscillator (±0.25% typical), 3×/4× PLL support up to 48 MHz |
| I/O Pins | 11 programmable I/O pins with Interrupt-on-Change, weak pull-ups, and 25 mA sink/source capability |
| Operating Voltage | 1.8 V to 3.6 V - optimized for single-cell Li-ion or two-cell alkaline battery systems |
Pinout & Package
AC244054 is available in 14-pin PDIP, SOIC, and TSSOP packages (0.300" wide), and 16-pin QFN/UQFN (4×4 mm). Pin functions are validated per DS40001639C Figures 1–2 and Tables 1–2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RA0/D+/ICSPDAT | USB D+ / ICSP Data | Differential USB data line; also serves as ICSP programming data I/O during programming |
| RA1/D-/ICSPCLK | USB D− / ICSP Clock | Differential USB data line; also provides ICSP programming clock signal |
| RA3/MCLR/VPP | Reset / Programming Voltage | Active-low master reset with internal pull-up; accepts 13 V VPP for high-voltage programming |
| RC0/ICSPDAT | ICSP Data (alternate) | Secondary ICSPDAT pin enabling shared programming interface with other peripherals |
| RC1/ICSPCLK | ICSP Clock (alternate) | Secondary ICSPCLK pin supporting flexible debug/prog header routing |
| VUSB3V3 | USB Transceiver Supply | On LF devices: must be tied to VDD; powers internal USB transceiver and core logic |
Key Features
| Feature | Design Value |
|---|---|
| USB Self-Tuning | Eliminates need for external crystal or resonator - USB host calibrates internal oscillator to ±0.25% |
| XLP Ultra-Low-Power | 25 nA Sleep mode @ 1.8 V enables multi-year battery life in HID and sensor nodes |
| In-Circuit Serial Programming | Two-pin ICSP™ (RA0/RA1 or RC0/RC1) enables field firmware updates without socket removal |
| Flexible Clock System | Run-time clock switching among internal 16 MHz, 31 kHz low-power, or external sources with CLKOUT visibility |
| Enhanced Peripherals | Two 10-bit PWMs, Timer1 with gate control, MSSP with I²C/SPI, and EUSART with LIN/RS-485 support |
Applications
| USB Human Interface Device (HID) | Low-Power Sensor Node Controller |
|---|---|
Use Scenario: Wireless keyboard/mouse with plug-and-play USB enumeration and zero-latency reporting. IC Role / Device Role / Timing Role: Primary USB endpoint controller managing HID descriptor exchange, report buffering, and interrupt transfers at 10 ms intervals. Use Value: Self-tuned USB eliminates crystal BOM cost and layout sensitivity while maintaining full-speed compliance under temperature drift. | Use Scenario: Battery-operated environmental sensor hub collecting temperature/humidity data every 30 seconds. IC Role / Device Role / Timing Role: System supervisor executing periodic wake-from-Sleep, ADC sampling (on companion device), and USB bulk transfer of logged data. Use Value: 25 nA Sleep current extends CR2032 battery life beyond 5 years; internal 16 MHz oscillator ensures precise timing for sensor polling intervals. |
| Programmable USB Peripheral | Industrial Control Interface |
Use Scenario: Field-configurable USB-to-GPIO adapter for lab equipment control and diagnostics. IC Role / Device Role / Timing Role: USB device implementing custom class descriptors with bidirectional endpoint handling and real-time GPIO state mapping. Use Value: Dual ICSP pin options (RA0/RA1 or RC0/RC1) allow PCB layout optimization for isolated programming access without compromising USB signal integrity. | Use Scenario: DIN-rail mounted USB interface module converting Modbus RTU over RS-485 to USB CDC ACM virtual COM port. IC Role / Device Role / Timing Role: Protocol bridge using EUSART in RS-485 mode with auto-direction control and USB CDC class enumeration. Use Value: EUSART auto-baud detect and LIN-compatible framing simplify interoperability with legacy industrial controllers; 2.3–5.5 V operating range supports wide-input power supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit USB microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PIC16F1454-I/P | Same silicon, 5.5 V max VDD (vs. 3.6 V for AC244054); higher VDD tolerance but no XLP ultra-low-power optimization | Preferred where wider supply range (2.3–5.5 V) is required and sub-µA Sleep not critical | Select when interfacing directly with 5 V logic or unregulated 3.3/5 V rails without LDO |
| PIC16LF1455-I/SS | 14-pin variant with added 5-channel 10-bit ADC, 2 comparators, and 1 DAC - same XLP specs and USB engine | Suitable for analog-sensing USB devices (e.g., medical thermometers, smart sensors) requiring local signal conditioning | Choose when on-chip analog acquisition reduces external component count and board space |
Compared with PIC16F1454-I/P, AC244054 delivers superior energy efficiency for battery longevity but sacrifices voltage headroom; versus PIC16LF1455-I/SS, it trades analog integration for lower cost and reduced leakage in pure digital USB control roles.
Availability
AC244054 is available at Aetrix Electronics and suitable for USB HID development, low-power sensor interface design, and industrial protocol bridge applications requiring stable component supply across production lifecycles.
Supply support for AC244054 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.
AC244054 belongs to the PIC16(L)F145X family - designed specifically for cost-sensitive, ultra-low-power USB peripheral applications where crystal-free operation, minimal external components, and long battery life are mandatory.
FAQ
What is the maximum operating frequency of the AC244054?
The AC244054 supports a maximum instruction cycle frequency of 48 MHz via its internal 16 MHz oscillator combined with a selectable 3× PLL. This yields an 83 ns instruction cycle time at DC–48 MHz clock input, enabling real-time USB packet processing and deterministic peripheral response.
Does the AC244054 include an analog-to-digital converter (ADC)?
No, the AC244054 (PIC16LF1454) does not include an ADC. Per DS40001639C Table 1-1 and device overview, analog features including ADC, DAC, comparators, and FVR are explicitly excluded from the PIC16(L)F1454 variant - only PIC16(L)F1455 and PIC16(L)F1459 support those peripherals.
Can the AC244054 operate without an external crystal?
Yes, the AC244054 operates fully crystal-free using its factory-calibrated 16 MHz internal oscillator with USB self-tuning. The USB host dynamically adjusts the oscillator to maintain ±0.25% accuracy, eliminating external timing components while ensuring full USB 2.0 compliance for Low and Full Speed modes.
What programming interfaces are supported by the AC244054?
The AC244054 supports In-Circuit Serial Programming™ (ICSP™) via two dedicated pins - either RA0/RA1 (D+/D−) or RC0/RC1 - and Enhanced Low-Voltage Programming (LVP). Both methods enable full Flash and configuration bit programming without high-voltage VPP, simplifying production and field updates.
What is the Sleep current specification for the AC244054?
The AC244054 achieves 25 nA typical Sleep current at 1.8 V, as specified in the Extreme Low-Power Management section of DS40001639C. This value is measured with all clocks disabled, BOR off, WDT off, and I/O pins configured as inputs with weak pull-ups disabled - enabling decade-scale battery operation in intermittent-use applications.
AC244054 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Accessory Type:
- Debug Interface Module
- For Use With/Related Products:
- PIC16LF1454, PIC16LF1455, PIC16LF1459
AC244054 FAQ
1.How can I place an order for AC244054 through Aetrix?
Please submit a Request for Quotation (RFQ) for AC244054 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AC244054 reliable?
The price and inventory of AC244054 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AC244054 is usually 5 days.
3.What payment methods are accepted for AC244054?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AC244054 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AC244054?
AC244054 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AC244054 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AC244054?
For technical support, including AC244054 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AC244054 requirements.
6.How does Aetrix verify that AC244054 is sourced from the original manufacturer or authorized distributors?
All AC244054 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AC244054 meets industry standards.
7.What is the process for return or replacement of AC244054?
All AC244054 units undergo pre-shipment inspection (PSI). If there is an issue with AC244054, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AC244054 part is unused and in its original packaging.
Return procedure for AC244054:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AC244054 Tags
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PRT-14427
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PRT-11417
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MIKROE-485
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Adafruit Industries LLC
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PRT-14017
SparkFun Electronics
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