Mechanical Dimensions & Land Pattern (WFBGA-84)
Extracted from Datasheet & IPC-7351B NormalizedRecommended Companion BOM & Drop-In Equivalents
Passive external components per reference schematic and 1:1 pin-compatible alternatives| Designator / Replacement MPN | Value / Package | Function & PCB Layout Rule |
|---|---|---|
| N/A BOM | Per application circuit WFBGA-84 | Size power & signal trace widths for rated load current following IPC-2221 clearance rules. |
Technical Frequently Asked Questions (FAQ) — SCH3226I-SY (WFBGA-84)
Quick answers covering Pinout, IPC-7351B Land Pattern dimensions, and CAD export formatsWhat is the Pinout and operating voltage specification of SCH3226I-SY (WFBGA-84)?
Manufactured by MICROCHIP, the SCH3226I-SY is housed in a WFBGA-84 package with 100 pins and a 0.65 mm lead pitch. Key pins include: A2 (REMOTE2 -: Multiplexed I/O & Peripheral Pin REMOTE2 - (General)), A3 (HVSS: Ground Reference Pin (HVSS)), A4 (PWM1: Multiplexed I/O & Peripheral Pin PWM1 (PWM)), A5 (nHWM_INT: Multiplexed I/O & Peripheral Pin nHWM_INT (General)), A6 (PWM3: Multiplexed I/O & Peripheral Pin PWM3 (PWM)), A7 (PWRGD_OUT: Multiplexed I/O & Peripheral Pin PWRGD_OUT (General)).
What are the IPC-7351B PCB Footprint dimensions for SCH3226I-SY?
Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), SCH3226I-SY (WFBGA-84) has a nominal body envelope of 8.00 × 8.00 mm, pitch e = 0.65 mm, and 100 copper pads.
Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for SCH3226I-SY?
You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for SCH3226I-SY (MICROCHIP, WFBGA-84) directly on this page, including KiCad 8 Footprints (.kicad_mod), Schematic Symbols (.kicad_sym), Autodesk Fusion 360 / Eagle (.lbr), and 3D STEP AP214 / WebGL GLB models.
Static Reference Appendix: Pinout Table (100 pins) & SCH3224 / SCH3226 Family VariantsExpand static table
| Pin # | Signal Name | Electrical Type | Functional Description & Design Notes |
|---|---|---|---|
| A2 | REMOTE2 - | Digital_IO | Signal terminal REMOTE2 - (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: REMOTE2 -. Supported peripheral buses: General. |
| A3 | HVSS | GND | 0V electrical ground return terminal (HVSS) for internal core logic, I/O drivers, and analog sub-blocks. |
| A4 | PWM1 | Digital_IO | Signal terminal PWM1 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PWM1. Supported peripheral buses: PWM. |
| A5 | nHWM_INT | Digital_IO | Signal terminal nHWM_INT (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: nHWM_INT. Supported peripheral buses: General. |
| A6 | PWM3 | Digital_IO | Signal terminal PWM3 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PWM3. Supported peripheral buses: PWM. |
| A7 | PWRGD_OUT | Digital_IO | Signal terminal PWRGD_OUT (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PWRGD_OUT. Supported peripheral buses: General. |
| A8 | GP62 / nCTS4 | Digital_IO | Signal terminal GP62 / nCTS4 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GP62 / nCTS4. Supported peripheral buses: General. |
| A9 | GP66 / nDSR4 | Digital_IO | Signal terminal GP66 / nDSR4 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GP66 / nDSR4. Supported peripheral buses: General. |
| A10 | VSS | GND | 0V electrical ground return terminal (VSS) for internal core logic, I/O drivers, and analog sub-blocks. |
| B1 | REMOTE1 - | Digital_IO | Signal terminal REMOTE1 - (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: REMOTE1 -. Supported peripheral buses: General. |
| B2 | +25V IN ._ | Power_In | Primary positive power supply input (+25V IN ._) operating in the 3.3V / 5.0V Standard Logic domain (Max rating: 5.5V). |
| B3 | HVTR | Digital_IO | Signal terminal HVTR (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: HVTR. Supported peripheral buses: General. |
| B4 | FANTACH3 | RF_50Ohm | Signal terminal FANTACH3 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: FANTACH3. Supported peripheral buses: General. |
| B5 | PWM2 | Digital_IO | Signal terminal PWM2 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PWM2. Supported peripheral buses: PWM. |
| B6 | nTHERMTRIP | Digital_IO | Signal terminal nTHERMTRIP (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: nTHERMTRIP. Supported peripheral buses: General. |
| B7 | PWRGD_PS | Digital_IO | Signal terminal PWRGD_PS (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PWRGD_PS. Supported peripheral buses: General. |
| B8 | GP67 / nRTS4 | Digital_IO | Signal terminal GP67 / nRTS4 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GP67 / nRTS4. Supported peripheral buses: General. |
| B9 | GP65 / TXD4 | Digital_IO | Signal terminal GP65 / TXD4 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GP65 / TXD4. Supported peripheral buses: UART. |
| B10 | nRSMRST | Digital_IO | Signal terminal nRSMRST (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: nRSMRST. Supported peripheral buses: General. |
| B11 | CLKI32 | Digital_IO | Signal terminal CLKI32 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: CLKI32. Supported peripheral buses: General. |
| C1 | +5V_IN | Power_In | Primary positive power supply input (+5V_IN) operating in the 3.3V / 5.0V Standard Logic domain (Max rating: 5.5V). |
| C2 | +12V_IN | Digital_IO | Signal terminal +12V_IN (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: +12V_IN. Supported peripheral buses: General. |
| C3 | GP40 / DRVDEN0(out) | Digital_IO | Signal terminal GP40 / DRVDEN0(out) (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GP40 / DRVDEN0(out). Supported peripheral buses: General. |
| C4 | FANTACH1 | RF_50Ohm | Signal terminal FANTACH1 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: FANTACH1. Supported peripheral buses: General. |
| C5 | FANTACH2 | RF_50Ohm | Signal terminal FANTACH2 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: FANTACH2. Supported peripheral buses: General. |
| C6 | VSS | GND | 0V electrical ground return terminal (VSS) for internal core logic, I/O drivers, and analog sub-blocks. |
| C7 | GP34 / nDTR4 | Digital_IO | Signal terminal GP34 / nDTR4 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GP34 / nDTR4. Supported peripheral buses: General. |
| C8 | GP64 / RXD4 | Digital_IO | Signal terminal GP64 / RXD4 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GP64 / RXD4. Supported peripheral buses: UART. |
| C9 | GP63 / nDCD4 | Digital_IO | Signal terminal GP63 / nDCD4 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GP63 / nDCD4. Supported peripheral buses: General. |
| C10 | GP31 / nRI4 | Digital_IO | Signal terminal GP31 / nRI4 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GP31 / nRI4. Supported peripheral buses: General. |
| C11 | GP12 / nDCD3 | Digital_IO | Signal terminal GP12 / nDCD3 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GP12 / nDCD3. Supported peripheral buses: General. |
| D1 | LAD2 | Digital_IO | Signal terminal LAD2 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: LAD2. Supported peripheral buses: General. |
| D2 | VSS | GND | 0V electrical ground return terminal (VSS) for internal core logic, I/O drivers, and analog sub-blocks. |
| D3 | VTR | Digital_IO | Signal terminal VTR (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: VTR. Supported peripheral buses: General. |
| D9 | GP61 / nLED2 / CLKO | Digital_IO | Signal terminal GP61 / nLED2 / CLKO (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GP61 / nLED2 / CLKO. Supported peripheral buses: General. |
| D10 | GP60 / nLED1 / WDT | Digital_IO | Signal terminal GP60 / nLED1 / WDT (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GP60 / nLED1 / WDT. Supported peripheral buses: General. |
| D11 | GP13 / nRI3 | Digital_IO | Signal terminal GP13 / nRI3 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GP13 / nRI3. Supported peripheral buses: General. |
| E1 | LFRAME# | Digital_IO | Signal terminal LFRAME# (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: LFRAME#. Supported peripheral buses: General. |
| E2 | LAD1 | Digital_IO | Signal terminal LAD1 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: LAD1. Supported peripheral buses: General. |
| E3 | CLOCKI | Digital_IO | Signal terminal CLOCKI (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: CLOCKI. Supported peripheral buses: General. |
| E5 | RESERVED VSSc = | GND | 0V electrical ground return terminal (RESERVED VSSc =) for internal core logic, I/O drivers, and analog sub-blocks. |
| E6 | nHWM_INT | Digital_IO | Signal terminal nHWM_INT (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: nHWM_INT. Supported peripheral buses: General. |
| E7 | nFPRST / GP30 | Digital_IO | Signal terminal nFPRST / GP30 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: nFPRST / GP30. Supported peripheral buses: General. |
| E9 | GP14 / nDSR3 | Digital_IO | Signal terminal GP14 / nDSR3 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GP14 / nDSR3. Supported peripheral buses: General. |
| E10 | VTR | Digital_IO | Signal terminal VTR (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: VTR. Supported peripheral buses: General. |
| E11 | GP15 / nDTR3 | Digital_IO | Signal terminal GP15 / nDTR3 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GP15 / nDTR3. Supported peripheral buses: General. |
| F1 | PCI RESET#_ | Digital_IO | Active-low hardware reset terminal (PCI RESET#_): pulling this pin Low resets the processor core and peripherals. |
| F2 | LAD3 | Digital_IO | Signal terminal LAD3 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: LAD3. Supported peripheral buses: General. |
| F3 | LAD0 | Digital_IO | Signal terminal LAD0 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: LAD0. Supported peripheral buses: General. |
| F5 | RESERVED VSSc = | GND | 0V electrical ground return terminal (RESERVED VSSc =) for internal core logic, I/O drivers, and analog sub-blocks. |
| F7 | VTR | Digital_IO | Signal terminal VTR (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: VTR. Supported peripheral buses: General. |
| F9 | GP10 / RXD3 | Digital_IO | Signal terminal GP10 / RXD3 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GP10 / RXD3. Supported peripheral buses: UART. |
| F10 | GP17 / nRTS3 | Digital_IO | Signal terminal GP17 / nRTS3 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GP17 / nRTS3. Supported peripheral buses: General. |
| F11 | GP42 / nIO_PME | Digital_IO | Signal terminal GP42 / nIO_PME (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GP42 / nIO_PME. Supported peripheral buses: General. |
| G1 | PCI_CLK | Digital_IO | Signal terminal PCI_CLK (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PCI_CLK. Supported peripheral buses: General. |
| G2 | SER_IRQ | Digital_IO | Signal terminal SER_IRQ (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: SER_IRQ. Supported peripheral buses: General. |
| G3 | LDRQ# | Digital_IO | Signal terminal LDRQ# (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: LDRQ#. Supported peripheral buses: General. |
| G5 | TEST VSSb = | GND | 0V electrical ground return terminal (TEST VSSb =) for internal core logic, I/O drivers, and analog sub-blocks. |
| G6 | VTR | Digital_IO | Signal terminal VTR (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: VTR. Supported peripheral buses: General. |
| G7 | VSS | GND | 0V electrical ground return terminal (VSS) for internal core logic, I/O drivers, and analog sub-blocks. |
| G9 | GP54 / nDSR2 | Digital_IO | Signal terminal GP54 / nDSR2 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GP54 / nDSR2. Supported peripheral buses: General. |
| G10 | GP11 / TXD3 | Digital_IO | Signal terminal GP11 / TXD3 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GP11 / TXD3. Supported peripheral buses: UART. |
| G11 | GP16 / nCTS3 | Digital_IO | Signal terminal GP16 / nCTS3 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GP16 / nCTS3. Supported peripheral buses: General. |
| H1 | VSS | GND | 0V electrical ground return terminal (VSS) for internal core logic, I/O drivers, and analog sub-blocks. |












