Part Information Review and Updates

flux

3:31

Reviewing project details.

Reviewing the bill of materials.

Analyzing the PCB layout.

Analyzing the schematic.

Looking for "Exact manufacturer part number, manufacturer name, package type, pin count, interface type, pressure range, supply voltage range, operating temperature range, and short functional description for MMR920C04ARE." in mmr920c04_datasheet_rev.3-_english.pdf

Looking for "Complete pin table with pin numbers, pin names, and pin functions for MMR920C04ARE. Include any no-connect pins if present." in mmr920c04_datasheet_rev.3-_english.pdf

Looking for "Package / mechanical information for MMR920C04ARE, including package name, body size, and whether it is LGA or another package type." in mmr920c04_datasheet_rev.3-_english.pdf

Looking for "Key electrical and performance specifications for MMR920C04ARE: pressure range, output type, interface, supply current, accuracy, temperature compensation range, media compatibility, and any notable application or implementation guidance." in mmr920c04_datasheet_rev.3-_english.pdf

Searching the project (2 questions).

Analyzing the PCB layout.

Searching project components.

Searching 4 domains.

Searching for components.

Searching 2 domains.

Searching for pin details.

Searching components.

Searching for asset details.

Searching 3 domains.

Summarizing metadata details.

Comparing datasheet information.

Searching 2 domains.

Fetching datasheet information.

Searching fetch_url.

Looking for "package name dimensions pad count outline package type number of pins for MMR920C04ARE" in mmr920c04_datasheet_rev.3-_english.pdf

Investigating metadata on footprints.

Searching pcb.

Search complete — 276 results across 6 domains.

Identifying discrepancies in datasheet.

Considering citation inclusion.

Part review summary
I reviewed the current part project for MMR920C04ARE.
  • Datasheet URL: already present in the project, so I did not search the web or change it.
  • Overall status: the symbol and footprint look structurally close to the datasheet, but the part metadata and pin metadata are incomplete, and I found one clear pin-name typo plus several missing classification fields.
  • Most important issue: all symbol terminals still have Pin Type = Unspecified. For part projects, pin count should match the datasheet exactly and pin types should be explicitly set from the datasheet rather than left guessed or unspecified .
Current project info vs datasheet

Metadata comparison

ItemIn projectFrom datasheetStatus
MPNMMR920C04AREDatasheet body refers to MMR920C04 family / C04 range variantAcceptable, but worth confirming exact ordering suffix
ManufacturerMitsumi ElectricMITSUMI ELECTRIC CO., LTD. / Mitsumi Co., Ltd.Match
Part typeSensorsDigital micro pressure sensorBroad but acceptable
DescriptionPRESSURE SENSOR, 3.922KPA, GAGE, I2C/SPIDigital micro pressure sensor, corrected digital outputFunctionally correct, could be clearer
Package propertyMissingMEMS-12BMissing
Pin count1212Match
Datasheet URLSetOfficial PDF already linkedMatch
Key specs pulled from the datasheet

Datasheet key specs

ParameterValue
Device typeDigital micro pressure sensor
Pressure range-40 to +40 cmH2O (-3.922 to +3.922 kPa)
InterfaceSPI / I2C
I2C address0x67
Supply, analog3.0 V to 3.6 V
Supply, digital I/O1.2 V to 3.6 V
Operating temperature0 C to 50 C
Pressure error±1.0 %FS max over 0 C to 50 C
Effective resolutiondown to 0.002 cmH2O RMS in MODE4
PackageMEMS-12B
Package size7.0 mm x 7.0 mm x 7.2 mm
Pressure mediumAir only, non-condensing
Symbol cross-check

Pin-by-pin symbol audit

Datasheet pinExpected nameProject terminalResult
1VDDVDDMatch
2NCNC_1Electrically OK, name differs
3VDDIOVDDIOMatch
4PSELPSELMatch
5GNDGNDMatch
6SCLK/SCLSCLK/SLCMismatch: typo
7CSBCSBMatch
8SDOSDOMatch
9SDI/SDASDI/SDAMatch
10DRDYBDRDYBMatch
11NCNC_2Electrically OK, name differs
12NCNC_3Electrically OK, name differs
Symbol findings
  • Pin count matches the datasheet: 12 / 12
  • Pin numbering matches the datasheet
  • One naming mismatch:
  • NC pins are present, which is good
  • All pins are missing proper pin typing
    • VDD should be Power In
    • VDDIO should be Power In
    • GND should be Ground
    • PSEL, CSB should be Input
    • SDO, DRDYB should be Output
    • SCLK/SLC and SDI/SDA are interface-dependent and may reasonably need careful handling, but leaving them as Unspecified is not ideal
    • NC_1, NC_2, NC_3 should be Not Connected
  • I also could not find evidence that Pin Description, Section, or Pin Group metadata has been populated. For part projects, those are the normal fields to complete during datasheet sync .
Footprint cross-check

Footprint findings

CheckResult
Footprint pad count12 pads present
Pad namingMatches the symbol naming set, including NC pads
Package family metadataNot exposed in project metadata
Mechanical size verificationNot fully verifiable from the current indexed footprint data
What I can confirm:
  • The footprint has 12 pads, which matches the datasheet's 12-pin MEMS-12B package.
  • The pad labels correspond to the symbol pins.
What I cannot fully confirm from the current project data:
  • Exact pad geometry
  • Exact body outline
  • Exact 7.0 mm x 7.0 mm x 7.2 mm package compliance
So the footprint is consistent at the pad-count / pad-label level, but not fully mechanically verified.
Mismatches and gaps to fix

Issues found

SeverityItemFinding
HighPin typingAll terminals are still Unspecified
MediumPin namingSCLK/SLC should be SCLK/SCL
MediumPackage metadataPackage or Case Code is missing; should be MEMS-12B
MediumPin descriptionsNo usable Pin Description metadata found
LowNC namingNC_1, NC_2, NC_3 differ from generic datasheet label NC, though electrically this is fine
LowDescription qualityCurrent description is usable, but could better describe the part's corrected digital-output behavior
Recommended next updates
I did not apply any changes yet. The highest-value fixes would be:
  1. Rename SCLK/SLC to SCLK/SCL
  2. Set proper Pin Type for all 12 terminals
  3. Add Package or Case Code = MEMS-12B
  4. Add Operating Voltage = 3.6 V and Operating Temperature = 0 C to 50 C
  5. Add short Pin Description entries for each terminal
  6. Optionally tighten Part Type from Sensors to Pressure Sensor
  7. Optionally improve the description to something like:
    • Digital micro pressure sensor, +/-3.922 kPa gauge, SPI/I2C, MEMS-12B
If you want, I can apply those metadata and pin-property fixes next.
Fix all mismatches
Check missing datasheets
Focus on power parts
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MMR920C04ARE

MMR920C04ARE thumbnail
Pressure Sensor -0.57PSI ~ 0.57PSI (-3.92kPa ~ 3.92kPa) Gauge Male - 0.1" (2.5mm) Tube 7 b 12-SMD, No Lead, Top Port The MMR920C04ARE, manufactured by Mitsumi Electric, is a surface-mount pressure sensor that measures low differential (gauge) pressure with high accuracy. It integrates sensing, signal conditioning, and digital output in a single package, making it easy to interface with microcontrollers. Sensor Type: MEMS-based gauge pressure sensor Pressure Range: ±0.57 PSI (±3.92 kPa) Output Interface: Digital (supports I²C and SPI) Resolution: 7-bit output (internally higher-resolution processing available) Supply Voltage: 3.0 V to 3.6 V Accuracy: حوالي ±0.65% full scale Package: 12-SMD, no-lead, top-port (compact ~7×7×7.2 mm) Port Type: 2.5 mm tube (barbless) for airflow or gas connection Features: Built-in temperature compensation Fast sampling capability Factory-calibrated digital output #CommonPartsLibrary #Sensor #Pressure-Sensor #Transducer

Properties

MMR920C04ARE

Mitsumi Electric

Sensors

cdn.nmbtc.com/uploads/2022/08/mmr920c04_datasheet_rev.3-_english.pdf

U

creativecommons.org/licenses/by/4.0/

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