Review all available part information (MPN, packag...

elenore384112

Review all available part information (MPN, package, pin count, description, properties). If no datasheet URL is already set, search the web for the official datasheet and update the part's Datasheet property with the URL. Then cross-check the schematic symbol, footprint, and pin descriptions against the datasheet. Summarize key specs and flag any mismatches.

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Files

Pins

Symbol

Layout

3D View

Part Audit

Scope and Sources

Reviewed the published Flux part DLS24035B against:

User-specified Datasheet URL: https://www.snapeda.com/parts/DLS24035B/Elecrow/datasheet/
Official Elecrow product page: https://www.elecrow.com/3-5-inch-480-320-spi-tft-lcd-module-with-ili9488-driver.html
Official Elecrow module manual linked to this SKU: https://www.elecrow.com/download/product/DLS24035B/3.5inch_SPI_Module_User_Manual.pdf
Elecrow manual identity: 3.5inch SPI Module MSP3520, document CR2018-MI3128, Rev 1.0

The SnapEDA page confirms the part number and manufacturer but does not expose detailed pin or mechanical data in page text. The official Elecrow manual was therefore used for the technical cross-check.

Existing Part Metadata

Table

Field	Current value	Assessment
Manufacturer Part Number	DLS24035B	Matches Elecrow product SKU
Manufacturer	Elecrow (project description/source)	Matches
Package or Case Code	Module	Reasonable but generic
Part Type	Optoelectronic Devices	Reasonable
Designator Prefix	DS	Reasonable for display module
Datasheet URL	https://www.snapeda.com/parts/DLS24035B/Elecrow/datasheet/	Updated to user-specified URL
Description	Elecrow 3.5 Inch 480x320 SPI TFT LCD Module with ILI9488 Driver	Matches product
Published terminal count	22	14 primary interface pins + 4 SD-related pins + 4 mounting/shield terminals

Key Specifications

Table

Parameter	Specification
Display size	3.5 inch TFT
Resolution	480 x 320 pixels (panel orientation also stated as 320 RGB x 480)
Display colors	RGB 65K color
LCD driver	ILI9488
LCD interface	4-wire SPI
Touch	Optional resistive touch; MSP3520 with touch, MSP3521 without touch
Supply voltage	3.3 V to 5 V
Approximate current	90 mA
Active area	48.96 x 73.44 mm
PCB/module size	56.34 x 98.00 mm
Viewing angle	Greater than 60 degrees
Operating temperature	-20 C to +70 C
Storage temperature	-30 C to +80 C
Product weight	Approximately 45 g
Mounting pattern	Four holes, 3.20 mm drill, 4.70 mm outer pad/clearance; 49.50 x 92.00 mm center spacing
Main connector	14 positions, 2.54 mm pitch; 33.02 mm end-to-end pin-center span

Symbol and Pin Cross-Check

Primary 14-pin interface

All primary pin numbers and names match the Elecrow manual:

Table

Pin	Symbol name	Datasheet function	Result
1	VCC	3.3 V to 5 V module power	Match
2	GND	Power ground	Match
3	CS	LCD chip select	Match
4	RESET	LCD reset	Match
5	DC/RS	LCD command/data or register/data select	Match
6	SDI(MOSI)	LCD SPI write data	Match
7	SCK	LCD SPI clock	Match
8	LED	Backlight control, high = on	Match
9	SDO(MISO)	LCD SPI read data	Match
10	T_CLK	Resistive-touch SPI clock	Match
11	T_CS	Touch chip select	Match
12	T_DIN	Touch SPI input/write data	Match
13	T_DO	Touch SPI output/read data	Match
14	T_IRQ	Touch interrupt	Match

The symbol's electrical pin types are generally sensible: VCC/GND are power inputs; LCD and touch clocks/data-select/control inputs are inputs; MISO, T_DO, and T_IRQ are outputs.

Terminal descriptions and electrical types

All 22 terminals now have Pin Description and reviewed Pin Type properties. The 14 primary connector descriptions follow the Elecrow manual. LCD/touch control and host-to-module SPI signals are Inputs; LCD/touch MISO and interrupt signals are Outputs; VCC and GND are Power In. The four separate J4 SD terminals are typed by their existing SPI direction and explicitly state that this separate mapping is not documented in the Elecrow interface table. The four plated mounting terminals are Passive and state that their electrical connection is not specified by Elecrow.

Additional SD terminals

The symbol includes SD_CS, SD_MOSI, SD_MISO, and SD_SCK as a separate four-pin group (J4_1 through J4_4). The reviewed Elecrow manual documents an onboard SD-card slot but its primary external interface table only defines the 14-pin LCD/touch connector. The exact existence, location, and numbering of a separate J4 header were not confirmed by the available official text. Treat these four terminals as unverified until checked against a clear board drawing or the physical module.

Mounting terminals

Four terminals named SHIELD, SHIELD__1, SHIELD__2, and SHIELD__3 correspond spatially to the four mounting locations. Calling mechanical mounting holes “SHIELD” is misleading unless the plated rings are intentionally electrically bonded. The official drawing identifies mounting holes, not shield contacts.

Footprint Cross-Check

Footprint repair completed

The uniform 1000x unit error has been repaired and every footprint pad and outline was independently read back after mutation:

Table

Feature	Verified Flux value	Manual target	Result
Body outline	56.34 x 98.00 mm	56.34 x 98.00 mm	Match
Main-header pitch	2.54 mm	2.54 mm	Match
Main-header span	33.02 mm	13 x 2.54 = 33.02 mm	Match
Main-header pad/drill	1.50 mm / 1.00 mm	1.50 mm / 1.00 mm source geometry	Match
Four-pin-row pitch/span	2.54 mm / 7.62 mm	2.54 mm / 3 x 2.54 mm	Match
Mounting copper diameter	4.70 mm	4.70 mm	Match
Mounting drill	3.20 mm plated	3.20 mm	Match
Mounting-hole spacing	49.50 x 92.00 mm	49.50 x 92.00 mm	Match
Hole-center edge offsets	3.42 mm X, 3.00 mm Y	Derived from outline and spacing	Match

All four corner features are now plated through-hole pads with centered 3.20 mm drills and 4.70 mm copper diameter. Their existing terminal mappings were preserved.

Pin-1 indication

Pin 1 uses a 1.50 x 1.50 mm rectangular plated pad with a 1.00 mm drill at (-16.51, -47.00) mm. The pin-1 marker remains aligned with that end of the main header.

Outline and hole positions

The repaired positions match the expected geometry:

Outline: 56.34 x 98.00 mm
Mounting-hole center spacing: 49.50 x 92.00 mm
Main header pitch: 2.54 mm
Main header span: 13 x 2.54 mm = 33.02 mm

This indicates the source dimensions were likely correct before unit conversion.

Mismatch Summary

Resolved

The 1000x footprint scale error is corrected.
Four 3.20 mm mounting drills are present on the correct 49.50 x 92.00 mm pattern.

Major

The four mechanical mounting features are named and modeled as shield terminals rather than clearly defined mechanical mounting holes.
The separate four-pin SD interface (J4) is not verified by the official interface table reviewed.

Minor / metadata

Package metadata is only Module; a more descriptive package identifier could include the 56.34 x 98 mm module and 2.54 mm header format.

Recommended Remediation

Confirm whether the plated mounting rings are electrically connected before intentionally using the SHIELD terminals in a circuit.
Verify the separate J4 SD header from a clear module drawing or physical unit.

Overall Assessment

The schematic's primary 14-pin signal mapping, terminal descriptions, and electrical pin types now match the official Elecrow module manual. The footprint scale, header geometry, module outline, and four mounting holes are repaired and dimensionally verified. Remaining open questions are limited to the electrical meaning of the plated SHIELD mounting rings and the separately exposed J4 SD header.

Scope and Sources
Existing Part Metadata
Key Specifications
Symbol and Pin Cross-Check
Primary 14-pin interface
Terminal descriptions and electrical types
Additional SD terminals
Mounting terminals
Footprint Cross-Check
Footprint repair completed
Pin-1 indication
Outline and hole positions
Mismatch Summary
Resolved
Major
Minor / metadata
Recommended Remediation
Overall Assessment