ATSAM3S1CB / ATSAM3S2CA (LQFP-100(14x14))
Synchronized Pinout (Symbol / 2D / 3D) (100/100)
Touch or hover any pin to highlight concurrently across Symbol, Footprint and 3D| Pin | Symbol | Type | Function (EN) |
|---|---|---|---|
| 1 | RSTC | I/O | Multiplexed I/O & Peripheral Pin RSTC (General) |
| 2 | RTC | I/O | Multiplexed I/O & Peripheral Pin RTC (RTC/CLK) |
| 3 | RTT | I/O | Multiplexed I/O & Peripheral Pin RTT (General) |
| 4 | WDT | I/O | Multiplexed I/O & Peripheral Pin WDT (General) |
| 5 | PMC | I/O | Multiplexed I/O & Peripheral Pin PMC (General) |
| 6 | EEFC | I/O | Multiplexed I/O & Peripheral Pin EEFC (General) |
| 7 | - | I/O | Multiplexed I/O & Peripheral Pin - (General) |
| 8 | UART0 | I/O | Multiplexed I/O & Peripheral Pin UART0 (UART) |
| 9 | UART1 | I/O | Multiplexed I/O & Peripheral Pin UART1 (UART) |
| 10 | SMC | I/O | Multiplexed I/O & Peripheral Pin SMC (General) |
| 11 | PIOA | I/O | Multiplexed I/O & Peripheral Pin PIOA (General) |
| 12 | PIOB | I/O | Multiplexed I/O & Peripheral Pin PIOB (General) |
| 13 | PIOC | I/O | Multiplexed I/O & Peripheral Pin PIOC (General) |
| 14 | USART0 | I/O | Multiplexed I/O & Peripheral Pin USART0 (UART) |
| 15 | USART1 | I/O | Multiplexed I/O & Peripheral Pin USART1 (UART) |
| 16 | - | I/O | Multiplexed I/O & Peripheral Pin - (General) |
| 17 | - | I/O | Multiplexed I/O & Peripheral Pin - (General) |
| 18 | HSMCI | I/O | Multiplexed I/O & Peripheral Pin HSMCI (General) |
| 19 | TWI0 | I/O | Multiplexed I/O & Peripheral Pin TWI0 (I2C) |
| 20 | TWI1 | I/O | Multiplexed I/O & Peripheral Pin TWI1 (I2C) |
| 21 | SPI | I/O | Multiplexed I/O & Peripheral Pin SPI (SPI) |
| 22 | SSC | I/O | Multiplexed I/O & Peripheral Pin SSC (General) |
| 23 | TC0 | I/O | Multiplexed I/O & Peripheral Pin TC0 (General) |
| 24 | TC1 | I/O | Multiplexed I/O & Peripheral Pin TC1 (General) |
| 25 | TC2 | I/O | Multiplexed I/O & Peripheral Pin TC2 (General) |
| 26 | TC3 | I/O | Multiplexed I/O & Peripheral Pin TC3 (General) |
| 27 | TC4 | I/O | Multiplexed I/O & Peripheral Pin TC4 (General) |
| 28 | TC5 | I/O | Multiplexed I/O & Peripheral Pin TC5 (General) |
| 29 | ADC | I/O | Multiplexed I/O & Peripheral Pin ADC (ADC) |
| 30 | DACC | I/O | Multiplexed I/O & Peripheral Pin DACC (DAC) |
| 31 | PWM | I/O | Multiplexed I/O & Peripheral Pin PWM (PWM) |
| 32 | CRCCU | I/O | Multiplexed I/O & Peripheral Pin CRCCU (General) |
| 33 | ACC | I/O | Multiplexed I/O & Peripheral Pin ACC (General) |
| 34 | UDP | I/O | Multiplexed I/O & Peripheral Pin UDP (USB) |
| 35 | PC5 | I/O | Multiplexed I/O & Peripheral Pin PC5 (General) |
| 36 | VDDCORE | Power | Power Supply Input (VDDCORE — 1.62V to 3.6V) |
| 37 | PC4 | I/O | Multiplexed I/O & Peripheral Pin PC4 (General) |
| 38 | PA25/PGMD13 | I/O | Multiplexed I/O & Peripheral Pin PA25/PGMD13 (General) |
| 39 | PA26/PGMD14 | I/O | Multiplexed I/O & Peripheral Pin PA26/PGMD14 (General) |
| 40 | PC3 | I/O | Multiplexed I/O & Peripheral Pin PC3 (General) |
| 41 | PA12/PGMD0 | I/O | Multiplexed I/O & Peripheral Pin PA12/PGMD0 (General) |
| 42 | PA11/PGMM3 | I/O | Multiplexed I/O & Peripheral Pin PA11/PGMM3 (General) |
| 43 | PC2 | I/O | Multiplexed I/O & Peripheral Pin PC2 (General) |
| 44 | PA10/PGMM2 | I/O | Multiplexed I/O & Peripheral Pin PA10/PGMM2 (General) |
| 45 | GND | GND | Ground Reference Pin (GND) |
| 46 | PA9/PGMM1 | I/O | Multiplexed I/O & Peripheral Pin PA9/PGMM1 (General) |
| 47 | PC1 | I/O | Multiplexed I/O & Peripheral Pin PC1 (General) |
| 48 | PA8/XOUT32/PGMM0 | I/O | Multiplexed I/O & Peripheral Pin PA8/XOUT32/PGMM0 (RTC/CLK) |
| 49 | PA7/XIN32/PGMNVALID | I/O | Multiplexed I/O & Peripheral Pin PA7/XIN32/PGMNVALID (RTC/CLK) |
| 50 | VDDIO | Power | Power Supply Input (VDDIO — 1.62V to 3.6V) |
| 51 | TDI/PB4 | I/O | Multiplexed I/O & Peripheral Pin TDI/PB4 (General) |
| 52 | PA6/PGMNOE | I/O | Multiplexed I/O & Peripheral Pin PA6/PGMNOE (General) |
| 53 | PA5/PGMRDY | I/O | Multiplexed I/O & Peripheral Pin PA5/PGMRDY (General) |
| 54 | PC28 | I/O | Multiplexed I/O & Peripheral Pin PC28 (General) |
| 55 | PA4/PGMNCMD | I/O | Multiplexed I/O & Peripheral Pin PA4/PGMNCMD (General) |
| 56 | VDDCORE | Power | Power Supply Input (VDDCORE — 1.62V to 3.6V) |
| 57 | PA27/PGMD15 | I/O | Multiplexed I/O & Peripheral Pin PA27/PGMD15 (General) |
| 58 | PC8 | I/O | Multiplexed I/O & Peripheral Pin PC8 (General) |
| 59 | PA28 | I/O | Multiplexed I/O & Peripheral Pin PA28 (General) |
| 60 | NRST | I | System Enable & Hardware Reset (NRST) |
| 61 | TST | I/O | Multiplexed I/O & Peripheral Pin TST (General) |
| 62 | PC9 | I/O | Multiplexed I/O & Peripheral Pin PC9 (General) |
| 63 | PA29 | I/O | Multiplexed I/O & Peripheral Pin PA29 (General) |
| 64 | PA30 | I/O | Multiplexed I/O & Peripheral Pin PA30 (General) |
| 65 | PC10 | I/O | Multiplexed I/O & Peripheral Pin PC10 (General) |
| 66 | PA3 | I/O | Multiplexed I/O & Peripheral Pin PA3 (General) |
| 67 | PA2/PGMEN2 | I/O | Multiplexed I/O & Peripheral Pin PA2/PGMEN2 (General) |
| 68 | PC11 | I/O | Multiplexed I/O & Peripheral Pin PC11 (General) |
| 69 | VDDIO | Power | Power Supply Input (VDDIO — 1.62V to 3.6V) |
| 70 | GND | GND | Ground Reference Pin (GND) |
| 71 | PC14 | I/O | Multiplexed I/O & Peripheral Pin PC14 (General) |
| 72 | PA1/PGMEN1 | I/O | Multiplexed I/O & Peripheral Pin PA1/PGMEN1 (General) |
| 73 | PC16 | I/O | Multiplexed I/O & Peripheral Pin PC16 (General) |
| 74 | PAO/PGMEN0 | I/O | Multiplexed I/O & Peripheral Pin PAO/PGMEN0 (General) |
| 75 | PC17 | I/O | Multiplexed I/O & Peripheral Pin PC17 (General) |
| 76 | TDO/TRACESWO/PB5 | I/O | Multiplexed I/O & Peripheral Pin TDO/TRACESWO/PB5 (General) |
| 77 | JTAGSEL | I/O | Multiplexed I/O & Peripheral Pin JTAGSEL (SWD/JTAG) |
| 78 | PC18 | I/O | Multiplexed I/O & Peripheral Pin PC18 (General) |
| 79 | TMS/SWDIO/PB6 | I/O | Multiplexed I/O & Peripheral Pin TMS/SWDIO/PB6 (SWD/JTAG) |
| 80 | PC19 | I/O | Multiplexed I/O & Peripheral Pin PC19 (General) |
| 81 | PA31 | I/O | Multiplexed I/O & Peripheral Pin PA31 (General) |
| 82 | PC20 | I/O | Multiplexed I/O & Peripheral Pin PC20 (General) |
| 83 | TCK/SWCLK/PB7 | I/O | Multiplexed I/O & Peripheral Pin TCK/SWCLK/PB7 (SWD/JTAG) |
| 84 | PC21 | I/O | Multiplexed I/O & Peripheral Pin PC21 (General) |
| 85 | VDDCORE | Power | Power Supply Input (VDDCORE — 1.62V to 3.6V) |
| 86 | PC22 | I/O | Multiplexed I/O & Peripheral Pin PC22 (General) |
| 87 | ERASE/PB12 | I/O | Multiplexed I/O & Peripheral Pin ERASE/PB12 (General) |
| 88 | DDM/PB10 | I/O | Multiplexed I/O & Peripheral Pin DDM/PB10 (General) |
| 89 | DDP/PB11 | I/O | Multiplexed I/O & Peripheral Pin DDP/PB11 (General) |
| 90 | PC23 | I/O | Multiplexed I/O & Peripheral Pin PC23 (General) |
| 91 | VDDIO | Power | Power Supply Input (VDDIO — 1.62V to 3.6V) |
| 92 | PC24 | I/O | Multiplexed I/O & Peripheral Pin PC24 (General) |
| 93 | PB13/DAC0 | I/O | Multiplexed I/O & Peripheral Pin PB13/DAC0 (DAC) |
| 94 | PC25 | I/O | Multiplexed I/O & Peripheral Pin PC25 (General) |
| 95 | GND | GND | Ground Reference Pin (GND) |
| 96 | PB8/XOUT | I/O | Multiplexed I/O & Peripheral Pin PB8/XOUT (RTC/CLK) |
| 97 | PB9/PGMCK/XIN | I/O | Multiplexed I/O & Peripheral Pin PB9/PGMCK/XIN (RTC/CLK) |
| 98 | VDDIO | Power | Power Supply Input (VDDIO — 1.62V to 3.6V) |
| 99 | PB14/DAC1 | I/O | Multiplexed I/O & Peripheral Pin PB14/DAC1 (DAC) |
| 100 | VDDPLL | Power | Power Supply Input (VDDPLL — 1.62V to 3.6V) |
Extracted Drawings Gallery (6 Standard Drawings + 5 Extracted Figures)
Read the original datasheet PDF directly or click any drawing to view fullscreenTechnical Specifications & Part Details (ATSAM3S1CB-AUR)
Summary of electrical parameters, mechanical dimensions, voltage range and peripheral interfaces from Datasheet (EN)5-Point Standards Verification
Automated compliance checks prior to exportHardware Verification & Community Engineering Reviews
Summary of electrical parameters, mechanical dimensions, voltage range and peripheral interfaces from DatasheetFamily Variants & Same Datasheet Chips — ATSAM3S1CB / ATSAM3S2CA (3)
ATSAM3S1CB / ATSAM3S2CA (TFBGA-100)
ATSAM3S1CB / ATSAM3S2CA (TFBGA-100)
Mechanical Dimensions & Land Pattern (LQFP-100(14x14))
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 LQFP-100(14x14) | Size power & signal trace widths for rated load current following IPC-2221 clearance rules. |
Technical Frequently Asked Questions (FAQ) — ATSAM3S1CB-AUR (LQFP-100(14x14))
Quick answers covering Pinout, IPC-7351B Land Pattern dimensions, and CAD export formatsWhat is the Pinout and operating voltage specification of ATSAM3S1CB-AUR (LQFP-100(14x14))?
Manufactured by MICROCHIP, the ATSAM3S1CB-AUR is housed in a LQFP-100(14x14) package with 100 pins and a 0.50 mm lead pitch, supporting a VCC supply range of 1.62V to 3.6V. Key pins include: 1 (RSTC: Multiplexed I/O & Peripheral Pin RSTC (General)), 2 (RTC: Multiplexed I/O & Peripheral Pin RTC (RTC/CLK)), 3 (RTT: Multiplexed I/O & Peripheral Pin RTT (General)), 4 (WDT: Multiplexed I/O & Peripheral Pin WDT (General)), 5 (PMC: Multiplexed I/O & Peripheral Pin PMC (General)), 6 (EEFC: Multiplexed I/O & Peripheral Pin EEFC (General)).
What are the IPC-7351B PCB Footprint dimensions for ATSAM3S1CB-AUR?
Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), ATSAM3S1CB-AUR (LQFP-100(14x14)) has a nominal body envelope of 14.00 × 14.00 mm, pitch e = 0.50 mm, and 100 copper pads.
Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for ATSAM3S1CB-AUR?
You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for ATSAM3S1CB-AUR (MICROCHIP, LQFP-100(14x14)) 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) & ATSAM3S1CB / ATSAM3S2CA Family VariantsExpand static table
| Pin # | Signal Name | Electrical Type | Functional Description & Design Notes |
|---|---|---|---|
| 1 | RSTC | Digital_IO | Signal terminal RSTC (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: RSTC. Supported peripheral buses: General. |
| 2 | RTC | Digital_IO | Signal terminal RTC (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: RTC. Supported peripheral buses: RTC/CLK. |
| 3 | RTT | Digital_IO | Signal terminal RTT (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: RTT. Supported peripheral buses: General. |
| 4 | WDT | Digital_IO | Signal terminal WDT (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: WDT. Supported peripheral buses: General. |
| 5 | PMC | Digital_IO | Signal terminal PMC (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PMC. Supported peripheral buses: General. |
| 6 | EEFC | Digital_IO | Signal terminal EEFC (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: EEFC. Supported peripheral buses: General. |
| 7 | - | Digital_IO | Signal terminal - (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: -. Supported peripheral buses: General. |
| 8 | UART0 | Digital_IO | Signal terminal UART0 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: UART0. Supported peripheral buses: UART. |
| 9 | UART1 | Digital_IO | Signal terminal UART1 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: UART1. Supported peripheral buses: UART. |
| 10 | SMC | Digital_IO | Signal terminal SMC (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: SMC. Supported peripheral buses: General. |
| 11 | PIOA | Digital_IO | Signal terminal PIOA (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PIOA. Supported peripheral buses: General. |
| 12 | PIOB | Digital_IO | Signal terminal PIOB (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PIOB. Supported peripheral buses: General. |
| 13 | PIOC | Digital_IO | Signal terminal PIOC (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PIOC. Supported peripheral buses: General. |
| 14 | USART0 | Digital_IO | Signal terminal USART0 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: USART0. Supported peripheral buses: UART. |
| 15 | USART1 | Digital_IO | Signal terminal USART1 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: USART1. Supported peripheral buses: UART. |
| 16 | - | Digital_IO | Signal terminal - (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: -. Supported peripheral buses: General. |
| 17 | - | Digital_IO | Signal terminal - (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: -. Supported peripheral buses: General. |
| 18 | HSMCI | Digital_IO | Signal terminal HSMCI (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: HSMCI. Supported peripheral buses: General. |
| 19 | TWI0 | Digital_IO | Signal terminal TWI0 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: TWI0. Supported peripheral buses: I2C. |
| 20 | TWI1 | Digital_IO | Signal terminal TWI1 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: TWI1. Supported peripheral buses: I2C. |
| 21 | SPI | Digital_IO | Signal terminal SPI (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: SPI. Supported peripheral buses: SPI. |
| 22 | SSC | Digital_IO | Signal terminal SSC (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: SSC. Supported peripheral buses: General. |
| 23 | TC0 | Digital_IO | Signal terminal TC0 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: TC0. Supported peripheral buses: General. |
| 24 | TC1 | Digital_IO | Signal terminal TC1 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: TC1. Supported peripheral buses: General. |
| 25 | TC2 | Digital_IO | Signal terminal TC2 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: TC2. Supported peripheral buses: General. |
| 26 | TC3 | Digital_IO | Signal terminal TC3 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: TC3. Supported peripheral buses: General. |
| 27 | TC4 | Digital_IO | Signal terminal TC4 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: TC4. Supported peripheral buses: General. |
| 28 | TC5 | Digital_IO | Signal terminal TC5 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: TC5. Supported peripheral buses: General. |
| 29 | ADC | Analog | Signal terminal ADC (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: ADC. Supported peripheral buses: ADC. |
| 30 | DACC | Analog | Signal terminal DACC (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: DACC. Supported peripheral buses: DAC. |
| 31 | PWM | Digital_IO | Signal terminal PWM (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PWM. Supported peripheral buses: PWM. |
| 32 | CRCCU | Digital_IO | Signal terminal CRCCU (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: CRCCU. Supported peripheral buses: General. |
| 33 | ACC | Digital_IO | Signal terminal ACC (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: ACC. Supported peripheral buses: General. |
| 34 | UDP | Digital_IO | Signal terminal UDP (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: UDP. Supported peripheral buses: USB. |
| 35 | PC5 | Digital_IO | Signal terminal PC5 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PC5. Supported peripheral buses: General. |
| 36 | VDDCORE | Power_In | Primary positive power supply input (VDDCORE) operating in the 1.62V to 3.6V domain (Max rating: 3.6V). |
| 37 | PC4 | Digital_IO | Signal terminal PC4 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PC4. Supported peripheral buses: General. |
| 38 | PA25/PGMD13 | Digital_IO | Signal terminal PA25/PGMD13 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PA25/PGMD13. Supported peripheral buses: General. |
| 39 | PA26/PGMD14 | Digital_IO | Signal terminal PA26/PGMD14 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PA26/PGMD14. Supported peripheral buses: General. |
| 40 | PC3 | Digital_IO | Signal terminal PC3 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PC3. Supported peripheral buses: General. |
| 41 | PA12/PGMD0 | Digital_IO | Signal terminal PA12/PGMD0 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PA12/PGMD0. Supported peripheral buses: General. |
| 42 | PA11/PGMM3 | Digital_IO | Signal terminal PA11/PGMM3 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PA11/PGMM3. Supported peripheral buses: General. |
| 43 | PC2 | Digital_IO | Signal terminal PC2 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PC2. Supported peripheral buses: General. |
| 44 | PA10/PGMM2 | Digital_IO | Signal terminal PA10/PGMM2 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PA10/PGMM2. Supported peripheral buses: General. |
| 45 | GND | GND | 0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks. |
| 46 | PA9/PGMM1 | Digital_IO | Signal terminal PA9/PGMM1 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PA9/PGMM1. Supported peripheral buses: General. |
| 47 | PC1 | Digital_IO | Signal terminal PC1 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PC1. Supported peripheral buses: General. |
| 48 | PA8/XOUT32/PGMM0 | Digital_IO | Signal terminal PA8/XOUT32/PGMM0 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PA8/XOUT32/PGMM0. Supported peripheral buses: RTC/CLK. |
| 49 | PA7/XIN32/PGMNVALID | Digital_IO | Signal terminal PA7/XIN32/PGMNVALID (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PA7/XIN32/PGMNVALID. Supported peripheral buses: RTC/CLK. |
| 50 | VDDIO | Power_In | Primary positive power supply input (VDDIO) operating in the 1.62V to 3.6V domain (Max rating: 3.6V). |
| 51 | TDI/PB4 | Digital_IO | Signal terminal TDI/PB4 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: TDI/PB4. Supported peripheral buses: General. |
| 52 | PA6/PGMNOE | Digital_IO | Signal terminal PA6/PGMNOE (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PA6/PGMNOE. Supported peripheral buses: General. |
| 53 | PA5/PGMRDY | Digital_IO | Signal terminal PA5/PGMRDY (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PA5/PGMRDY. Supported peripheral buses: General. |
| 54 | PC28 | Digital_IO | Signal terminal PC28 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PC28. Supported peripheral buses: General. |
| 55 | PA4/PGMNCMD | Digital_IO | Signal terminal PA4/PGMNCMD (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PA4/PGMNCMD. Supported peripheral buses: General. |
| 56 | VDDCORE | Power_In | Primary positive power supply input (VDDCORE) operating in the 1.62V to 3.6V domain (Max rating: 3.6V). |
| 57 | PA27/PGMD15 | Digital_IO | Signal terminal PA27/PGMD15 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PA27/PGMD15. Supported peripheral buses: General. |
| 58 | PC8 | Digital_IO | Signal terminal PC8 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PC8. Supported peripheral buses: General. |
| 59 | PA28 | Digital_IO | Signal terminal PA28 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PA28. Supported peripheral buses: General. |
| 60 | NRST | Digital_IO | Active-low hardware reset terminal (NRST): pulling this pin Low resets the processor core and peripherals. |
| 61 | TST | Digital_IO | Signal terminal TST (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: TST. Supported peripheral buses: General. |
| 62 | PC9 | Digital_IO | Signal terminal PC9 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PC9. Supported peripheral buses: General. |
| 63 | PA29 | Digital_IO | Signal terminal PA29 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PA29. Supported peripheral buses: General. |
| 64 | PA30 | Digital_IO | Signal terminal PA30 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PA30. Supported peripheral buses: General. |




![ATSAM3S1CB-AUR (LQFP-100(14x14)) — Figure 4-2. Orientation of the 100-BALL TFBGA Package [TFBGA-100]](/api/v1/assets/C618466/extracted/figures/p13_fig02.png)
![ATSAM3S1CB-AUR (LQFP-100(14x14)) — Figure 4-1. Orientation of the 100-lead LQFP Package [TFBGA-100]](/api/v1/assets/C618466/extracted/figures/p13_fig01.png)