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) — CEC1702Q-S1-I/SX (WFBGA-84)
Quick answers covering Pinout, IPC-7351B Land Pattern dimensions, and CAD export formatsWhat is the Pinout and operating voltage specification of CEC1702Q-S1-I/SX (WFBGA-84)?
Manufactured by MICROCHIP, the CEC1702Q-S1-I/SX is housed in a WFBGA-84 package with 84 pins and a 0.65 mm lead pitch. Key pins include: A1 (VCI_OUT: Multiplexed I/O & Peripheral Pin VCI_OUT (General)), A2 (XTAL2: Multiplexed I/O & Peripheral Pin XTAL2 (RTC/CLK)), A3 (IOA3: General Purpose Digital I/O Pin IOA3), A4 (XTAL1: Multiplexed I/O & Peripheral Pin XTAL1 (RTC/CLK)), A5 (GPIO162/VCI IN1#_: Multiplexed I/O & Peripheral Pin GPIO162/VCI IN1#_ (General)), A6 (IOA6: General Purpose Digital I/O Pin IOA6).
What are the IPC-7351B PCB Footprint dimensions for CEC1702Q-S1-I/SX?
Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), CEC1702Q-S1-I/SX (WFBGA-84) has a nominal body envelope of 7.00 × 7.00 mm, pitch e = 0.65 mm, and 84 copper pads.
Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for CEC1702Q-S1-I/SX?
You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for CEC1702Q-S1-I/SX (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 (84 pins) & CEC1702 Family VariantsExpand static table
| Pin # | Signal Name | Electrical Type | Functional Description & Design Notes |
|---|---|---|---|
| A1 | VCI_OUT | Digital_IO | Signal terminal VCI_OUT (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: VCI_OUT. Supported peripheral buses: General. |
| A2 | XTAL2 | Digital_IO | Signal terminal XTAL2 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: XTAL2. Supported peripheral buses: RTC/CLK. |
| A3 | IOA3 | Digital_IO | General Purpose Digital I/O Pin IOA3 |
| A4 | XTAL1 | Digital_IO | Signal terminal XTAL1 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: XTAL1. Supported peripheral buses: RTC/CLK. |
| A5 | GPIO162/VCI IN1#_ | Digital_IO | Signal terminal GPIO162/VCI IN1#_ (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GPIO162/VCI IN1#_. Supported peripheral buses: General. |
| A6 | IOA6 | Digital_IO | General Purpose Digital I/O Pin IOA6 |
| A7 | IOA7 | Digital_IO | General Purpose Digital I/O Pin IOA7 |
| A8 | GPIO010/I2C03_SCL | Digital_IO | Signal terminal GPIO010/I2C03_SCL (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GPIO010/I2C03_SCL. Supported peripheral buses: I2C. |
| A9 | GPIO154/I2C02_SDA | Digital_IO | Signal terminal GPIO154/I2C02_SDA (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GPIO154/I2C02_SDA. Supported peripheral buses: I2C. |
| A10 | IOA10 | Digital_IO | General Purpose Digital I/O Pin IOA10 |
| B1 | BGPO0 | Digital_IO | Signal terminal BGPO0 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: BGPO0. Supported peripheral buses: General. |
| B2 | IOB2 | Digital_IO | General Purpose Digital I/O Pin IOB2 |
| B3 | IOB3 | Digital_IO | General Purpose Digital I/O Pin IOB3 |
| B4 | GPIO163/VCI IN0#_ | Digital_IO | Signal terminal GPIO163/VCI IN0#_ (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GPIO163/VCI IN0#_. Supported peripheral buses: General. |
| B5 | GPIO007/I2C03_SDA | Digital_IO | Signal terminal GPIO007/I2C03_SDA (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GPIO007/I2C03_SDA. Supported peripheral buses: I2C. |
| B6 | IOB6 | Digital_IO | General Purpose Digital I/O Pin IOB6 |
| B7 | GPIO155/I2C02_SCL | Digital_IO | Signal terminal GPIO155/I2C02_SCL (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GPIO155/I2C02_SCL. Supported peripheral buses: I2C. |
| B8 | GPIO047/KSO03 | Digital_IO | Signal terminal GPIO047/KSO03 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GPIO047/KSO03. Supported peripheral buses: General. |
| B9 | GPIO157/LED1 | Digital_IO | Signal terminal GPIO157/LED1 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GPIO157/LED1. Supported peripheral buses: General. |
| B10 | IOB10 | Digital_IO | General Purpose Digital I/O Pin IOB10 |
| C1 | VTR_PLL | Digital_IO | Signal terminal VTR_PLL (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: VTR_PLL. Supported peripheral buses: General. |
| C2 | IOC2 | Digital_IO | General Purpose Digital I/O Pin IOC2 |
| C5 | GPIO045/KSO01 | Digital_IO | Signal terminal GPIO045/KSO01 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GPIO045/KSO01. Supported peripheral buses: General. |
| C6 | GPIO127/UART0 CTS#_ | Digital_IO | Signal terminal GPIO127/UART0 CTS#_ (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GPIO127/UART0 CTS#_. Supported peripheral buses: UART. |
| C9 | GPIO046/KSO02 | Digital_IO | Signal terminal GPIO046/KSO02 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GPIO046/KSO02. Supported peripheral buses: General. |
| C10 | IOC10 | Digital_IO | General Purpose Digital I/O Pin IOC10 |
| D1 | VFLT_PLL | Digital_IO | Signal terminal VFLT_PLL (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: VFLT_PLL. Supported peripheral buses: General. |
| D2 | RESETI# | Digital_IO | Active-low hardware reset terminal (RESETI#): pulling this pin Low resets the processor core and peripherals. |
| D4 | VSS_ANALOG | GND | 0V electrical ground return terminal (VSS_ANALOG) for internal core logic, I/O drivers, and analog sub-blocks. |
| D5 | VBAT | Power_In | Primary positive power supply input (VBAT) operating in the 3.3V / 5.0V Standard Logic domain (Max rating: 5.5V). |
| D6 | GPIO225/UART0 RTS#_ | Digital_IO | Signal terminal GPIO225/UART0 RTS#_ (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GPIO225/UART0 RTS#_. Supported peripheral buses: UART. |
| D7 | GPIO156/LED0 | Digital_IO | Signal terminal GPIO156/LED0 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GPIO156/LED0. Supported peripheral buses: General. |
| D9 | GPIO104/UART0_TX | Digital_IO | Signal terminal GPIO104/UART0_TX (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GPIO104/UART0_TX. Supported peripheral buses: UART. |
| D10 | IOD10 | Digital_IO | General Purpose Digital I/O Pin IOD10 |
| E1 | VTR_REG | Digital_IO | Signal terminal VTR_REG (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: VTR_REG. Supported peripheral buses: General. |
| E2 | IOE2 | Digital_IO | General Purpose Digital I/O Pin IOE2 |
| E3 | VREF_ADC | Analog | Signal terminal VREF_ADC (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: VREF_ADC. Supported peripheral buses: ADC. |
| E4 | VSS1 | GND | 0V electrical ground return terminal (VSS1) for internal core logic, I/O drivers, and analog sub-blocks. |
| E7 | GPIO135/UART1 CTS#_ | Digital_IO | Signal terminal GPIO135/UART1 CTS#_ (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GPIO135/UART1 CTS#_. Supported peripheral buses: UART. |
| E8 | JTAG RST#_ | Digital_IO | Signal terminal JTAG RST#_ (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: JTAG RST#_. Supported peripheral buses: SWD/JTAG. |
| E9 | GPIO105/UART0_RX | Digital_IO | Signal terminal GPIO105/UART0_RX (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GPIO105/UART0_RX. Supported peripheral buses: UART. |
| E10 | IOE10 | Digital_IO | General Purpose Digital I/O Pin IOE10 |
| F1 | VR_CAP | Digital_IO | Signal terminal VR_CAP (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: VR_CAP. Supported peripheral buses: General. |
| F2 | GPIO200/ADC00 | Analog | Signal terminal GPIO200/ADC00 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GPIO200/ADC00. Supported peripheral buses: ADC. |
| F3 | IOF3 | Digital_IO | General Purpose Digital I/O Pin IOF3 |
| F4 | VTR_ANALOG | Digital_IO | Signal terminal VTR_ANALOG (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: VTR_ANALOG. Supported peripheral buses: General. |
| F7 | VSS2 | GND | 0V electrical ground return terminal (VSS2) for internal core logic, I/O drivers, and analog sub-blocks. |
| F8 | IOF8 | Digital_IO | General Purpose Digital I/O Pin IOF8 |
| F9 | GPIO170/TFCLK/UART1_TX | Digital_IO | Signal terminal GPIO170/TFCLK/UART1_TX (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GPIO170/TFCLK/UART1_TX. Supported peripheral buses: UART. |
| F10 | IOF10 | Digital_IO | General Purpose Digital I/O Pin IOF10 |
| G1 | GPIO203/ADC03 | Analog | Signal terminal GPIO203/ADC03 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GPIO203/ADC03. Supported peripheral buses: ADC. |
| G2 | GPIO201/ADC01 | Analog | Signal terminal GPIO201/ADC01 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GPIO201/ADC01. Supported peripheral buses: ADC. |
| G4 | IOG4 | Digital_IO | General Purpose Digital I/O Pin IOG4 |
| G5 | VTR2 | Digital_IO | Signal terminal VTR2 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: VTR2. Supported peripheral buses: General. |
| G6 | VTR1 | Digital_IO | Signal terminal VTR1 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: VTR1. Supported peripheral buses: General. |
| G7 | GPIO030/TIN3/KSI5 | Digital_IO | Signal terminal GPIO030/TIN3/KSI5 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GPIO030/TIN3/KSI5. Supported peripheral buses: General. |
| G9 | GPIO112/KSO05 | Digital_IO | Signal terminal GPIO112/KSO05 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GPIO112/KSO05. Supported peripheral buses: General. |
| G10 | GPIO113/KSO06 | Digital_IO | Signal terminal GPIO113/KSO06 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GPIO113/KSO06. Supported peripheral buses: General. |
| H1 | GPIO204/ADC04 | Analog | Signal terminal GPIO204/ADC04 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GPIO204/ADC04. Supported peripheral buses: ADC. |
| H2 | GPIO202/ADC02 | Analog | Signal terminal GPIO202/ADC02 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GPIO202/ADC02. Supported peripheral buses: ADC. |
| H5 | GPIO032/KSI7 | Digital_IO | Signal terminal GPIO032/KSI7 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GPIO032/KSI7. Supported peripheral buses: General. |
| H6 | GPIO140/ICT5 | Digital_IO | Signal terminal GPIO140/ICT5 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GPIO140/ICT5. Supported peripheral buses: General. |
| H9 | GPIO107/KSO04 | Digital_IO | Signal terminal GPIO107/KSO04 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GPIO107/KSO04. Supported peripheral buses: General. |
| H10 | GPIO120/KSO07 | Digital_IO | Signal terminal GPIO120/KSO07 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: GPIO120/KSO07. Supported peripheral buses: General. |









