Part Information Review and Updates
Thought for 3 mins 31 sec
Part review summary
Key specs pulled from the datasheet
Datasheet key specs
Symbol cross-check
Pin-by-pin symbol audit
Symbol findings
Recommended next updates
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 .
Table
| Item | In project | From datasheet | Status |
|---|---|---|---|
| MPN | MMR920C04ARE | Datasheet body refers to MMR920C04 family / C04 range variant | Acceptable, but worth confirming exact ordering suffix |
| Manufacturer | Mitsumi Electric | MITSUMI ELECTRIC CO., LTD. / Mitsumi Co., Ltd. | Match |
| Part type | Sensors | Digital micro pressure sensor | Broad but acceptable |
| Description | PRESSURE SENSOR, 3.922KPA, GAGE, I2C/SPI | Digital micro pressure sensor, corrected digital output | Functionally correct, could be clearer |
| Package property | Missing | MEMS-12B | Missing |
| Pin count | 12 | 12 | Match |
| Datasheet URL | Set | Official PDF already linked | Match |
Table
| Parameter | Value |
|---|---|
| Device type | Digital micro pressure sensor |
| Pressure range | -40 to +40 cmH2O (-3.922 to +3.922 kPa) |
| Interface | SPI / I2C |
| I2C address | 0x67 |
| Supply, analog | 3.0 V to 3.6 V |
| Supply, digital I/O | 1.2 V to 3.6 V |
| Operating temperature | 0 C to 50 C |
| Pressure error | ±1.0 %FS max over 0 C to 50 C |
| Effective resolution | down to 0.002 cmH2O RMS in MODE4 |
| Package | MEMS-12B |
| Package size | 7.0 mm x 7.0 mm x 7.2 mm |
| Pressure medium | Air only, non-condensing |
Table
| Datasheet pin | Expected name | Project terminal | Result |
|---|---|---|---|
| 1 | VDD | VDD | Match |
| 2 | NC | NC_1 | Electrically OK, name differs |
| 3 | VDDIO | VDDIO | Match |
| 4 | PSEL | PSEL | Match |
| 5 | GND | GND | Match |
| 6 | SCLK/SCL | SCLK/SLC | Mismatch: typo |
| 7 | CSB | CSB | Match |
| 8 | SDO | SDO | Match |
| 9 | SDI/SDA | SDI/SDA | Match |
| 10 | DRDYB | DRDYB | Match |
| 11 | NC | NC_2 | Electrically OK, name differs |
| 12 | NC | NC_3 | Electrically OK, name differs |
- Pin count matches the datasheet: 12 / 12
- Pin numbering matches the datasheet
- One naming mismatch:
- SCLK/SLC should be SCLK/SCL
- NC pins are present, which is good
- All pins are missing proper pin typing
- 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 .
Table
| Check | Result |
|---|---|
| Footprint pad count | 12 pads present |
| Pad naming | Matches the symbol naming set, including NC pads |
| Package family metadata | Not exposed in project metadata |
| Mechanical size verification | Not 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
Table
| Severity | Item | Finding |
|---|---|---|
| High | Pin typing | All terminals are still Unspecified |
| Medium | Pin naming | SCLK/SLC should be SCLK/SCL |
| Medium | Package metadata | Package or Case Code is missing; should be MEMS-12B |
| Medium | Pin descriptions | No usable Pin Description metadata found |
| Low | NC naming | NC_1, NC_2, NC_3 differ from generic datasheet label NC, though electrically this is fine |
| Low | Description quality | Current description is usable, but could better describe the part's corrected digital-output behavior |
I did not apply any changes yet. The highest-value fixes would be:
- Rename SCLK/SLC to SCLK/SCL
- Set proper Pin Type for all 12 terminals
- Add Package or Case Code = MEMS-12B
- Add Operating Voltage = 3.6 V and Operating Temperature = 0 C to 50 C
- Add short Pin Description entries for each terminal
- Optionally tighten Part Type from
Sensorsto Pressure Sensor - 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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