PIC18F45K50 Part Audit

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Part Audit

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Part Audit Scope
Audit of PIC18F45K50-I/P metadata, 40-pin schematic symbol, and PDIP-40 footprint against Microchip’s official PIC18(L)F2X/45K50 data sheet (DS30000684B). The datasheet extraction service returned the relevant pages but did not expose immutable citation URIs in this run; datasheet-derived details below should therefore be treated as cross-checked but not citation-linked.
Metadata review Key specifications
  • 8-bit PIC18 CPU, up to 48 MHz clock / 12 MIPS.
  • 32 KB Flash program memory, 2,048 bytes SRAM, and 256 bytes data EEPROM.
  • PIC18F45K50 supply range: 2.3 V to 5.5 V; 2.7 V minimum is required for operation up to 48 MHz.
  • Industrial I temperature grade: -40 °C to +85 °C.
  • USB 2.0 full-speed (12 Mb/s) and low-speed (1.5 Mb/s), on-chip transceiver, u...

flux

Audit complete. The 40-pin numbering and PDIP geometry largely match the PIC18F45K50-I/P datasheet, but the part is incorrectly classified as Logic / AND, alternate pin functions and descriptions are missing, all pin types are unspecified, and the through-hole drill definition needs confirmation.
A Datasheet URL was already set, so it was not overwritten; however, it points to a stale retailer page rather than the official Microchip PDF. Full findings and key specifications are in Part Audit.
A

adrian95

Correct the part classification, Datasheet URL, terminal names, pin types, and descriptions from the Microchip datasheet.

flux

I’ll update the MCU metadata and all 40 terminals from the Microchip pin tables, then re-inspect the symbol to verify numbering, names, electrical types, and descriptions.

flux

All terminal labels and electrical metadata are updated. I’m now validating the 40-pin map and checking whether the part-level classification and datasheet fields are exposed for direct editing in this part project.

flux

Updated and verified all 40 terminals:
  • Full Microchip alternate-function names
  • Datasheet-derived descriptions
  • Standard ERC pin types, including power, ground, reset, USB, and bidirectional I/O
  • Original pin numbering and footprint mappings preserved
Open item: the root-level classification and Datasheet URL remain unchanged because those part metadata fields are not currently exposed for editing. I reported this tooling limitation internally. The desired URL is:
https://ww1.microchip.com/downloads/aemDocuments/documents/OTH/ProductDocuments/DataSheets/PIC18F2X_45K50-30000684B.pdf
Fix root metadata
Verify drilled footprint
Improve pin organization
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Part Audit
Scope
Audit of PIC18F45K50-I/P metadata, 40-pin schematic symbol, and PDIP-40 footprint against Microchip’s official PIC18(L)F2X/45K50 data sheet (DS30000684B). The datasheet extraction service returned the relevant pages but did not expose immutable citation URIs in this run; datasheet-derived details below should therefore be treated as cross-checked but not citation-linked.
Metadata review

Table

FieldCurrent valueAssessment
Manufacturer Part NumberPIC18F45K50-I/PCorrect
ManufacturerMicrochipCorrect
Package / casePDIPCorrect but underspecified; ordering code /P is a 40-lead, 600 mil PDIP
Terminal / pin count40Correct
Description8-bit PIC MCU, 48 MHz, 32 KB Flash, 40-pin PDIPCorrect at a high level
LifecycleActiveConsistent with Microchip product status
Part TypeIntegrated CircuitsAcceptable but generic
Part subtypeLogicIncorrect classification for a microcontroller
Integrated-circuit typeLogicIncorrect classification for a microcontroller
Logic FunctionANDIncorrect; this is not an AND gate
Datasheet URLhttp://uk.rs-online.com/web/p/products/7863915/A URL is already set, so the requested “if absent” condition did not apply. However, this is a retailer product page rather than a datasheet PDF and appears stale. Official PDF found: https://ww1.microchip.com/downloads/aemDocuments/documents/OTH/ProductDocuments/DataSheets/PIC18F2X_45K50-30000684B.pdf
Key specifications
  • 8-bit PIC18 CPU, up to 48 MHz clock / 12 MIPS.
  • 32 KB Flash program memory, 2,048 bytes SRAM, and 256 bytes data EEPROM.
  • PIC18F45K50 supply range: 2.3 V to 5.5 V; 2.7 V minimum is required for operation up to 48 MHz.
  • Industrial I temperature grade: -40 °C to +85 °C.
  • USB 2.0 full-speed (12 Mb/s) and low-speed (1.5 Mb/s), on-chip transceiver, up to 32 endpoints, and 1 KB dual-access USB RAM.
  • 36 I/O, 25-channel 10-bit ADC, two comparators, CCP/ECCP, MSSP SPI/I2C, EUSART, CTMU, and two 8-bit plus two 16-bit timers.
  • VUSB3V3 is the internal regulator output / USB transceiver supply and requires an external capacitor; the datasheet specifies 0.33 µF minimum, 0.47 µF typical, 8 µF maximum.
Schematic symbol cross-check
All 40 terminal numbers map to the correct primary PDIP pin names:
  • Pin 1 MCLR/VPP/RE3; pins 2–7 RA0–RA5; pins 8–10 RE0–RE2.
  • Pins 11/32 VDD and pins 12/31 VSS.
  • Pins 13/14 RA7/RA6; pins 15–17 RC0–RC2; pin 18 VUSB3V3.
  • Pins 19–22 RD0–RD3; pins 23/24 D-/D+; pins 25/26 RC6/RC7.
  • Pins 27–30 RD4–RD7; pins 33–40 RB0–RB7.
Symbol mismatches / quality issues
  1. Alternate functions are omitted from nearly every pin name and description. Examples include RA0/C12IN0-/AN0, RA6/CLKO/OSC2, RB6/IOCB6/PGC, RB7/IOCB7/PGD, RC6/TX/CK/AN18, and RC7/RX/DT/SDO/AN19. The current short labels are usable for basic GPIO work but materially reduce discoverability and can cause interface-assignment errors.
  2. Every terminal has Pin Type: Unspecified. Power pins should be power, VSS ground/power, MCLR input, VUSB3V3 power, USB D+/D- bidirectional, and GPIO/peripheral terminals primarily bidirectional or input-only where applicable. Unspecified electrical types weaken ERC.
  3. Pin descriptions are absent. Important constraints are hidden, including RE3 being input-only, RB6/RB7 serving ICSP clock/data, RA6/RA7 serving oscillator functions, and VUSB3V3 requiring its regulator capacitor and not being intended to power external loads.
  4. The primary pin numbering itself is correct; no swapped or missing terminals were found.
Footprint cross-check
  • Pad count is 40 and pad ordering follows the correct DIP counter-clockwise sequence.
  • Pin pitch is 2.54 mm, matching the datasheet’s 0.100 inch pitch.
  • Pad-row center spacing is approximately 15.43 mm, within the 40-lead 600 mil PDIP lead-row range and close to the 15.24 mm nominal body convention.
  • Pin 1 is rectangular while the remaining pads are circular, providing a valid pin-1 indicator.
  • Pad diameter is approximately 1.184 mm.
Footprint concern
The inspected pad data did not expose a drill/hole diameter. A PDIP footprint must use plated through-holes; if these nodes truly lack drilled holes, the footprint is not manufacturable. This should be confirmed in the footprint editor or fabrication preview before use. The pad diameter is also relatively small for hand assembly, so annular ring adequacy depends strongly on the actual drill size.
  1. Replace the retailer Datasheet URL with the official Microchip PDF URL.
  2. Change the part classification from Logic / AND to Microcontroller / 8-bit MCU.
  3. Add complete alternate-function pin names and concise pin descriptions.
  4. Assign meaningful electrical pin types to improve ERC.
  5. Confirm that all 40 pads are plated through-holes and set an appropriate drill diameter; retain the 2.54 mm pitch and pin-1 rectangular pad.

  • Scope

  • Metadata review

  • Key specifications

  • Schematic symbol cross-check

  • Symbol mismatches / quality issues

  • Footprint cross-check

  • Footprint concern

  • Recommended corrections