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ATMEGA16-16AUR (TQFP-44(10x10)) — Symbol, Footprint IPC-7351B & 3D STEP Model

ATMEGA16-16AUR

MICROCHIPID: C27137627TQFP-44(10x10) · 44 Pins · Pitch 0.80mmIPC-7351B Verified5.0 (0)
SYNCHRONIZED 4D CROSS-PROBE MODETouch or hover any pin to highlight concurrently across Symbol, Footprint and 3D
1. SYMBOL
U1 · ATMEGA16-16AUR (TQFP-44(10x10))1MOSI/PB52MISO/PB63SCK/PB74RESET#5VCC6GND7XTAL28XTAL19RXD/PD010TXD/PD111INT0/PD212INT1/PD313OC1B/PD414OC1A/PD515ICP1/PD616OC2/PD717VCC18GND19SCL/PC020SDA/PC121TCK/PC222TMS/PC344PB4/SS#43PB3/AIN1/OC042PB2/AIN0/INT41PB1/T140PB0/XCK/T039GND38VCC37PA0/ADC036PA1/ADC135PA2/ADC234PA3/ADC333PA4/ADC432PA5/ADC531PA6/ADC630PA7/ADC729AREF28GND27AVCC26TOSC2/PC725TOSC1/PC624TDI/PC523TDO/PC4Grid Pitch = 2.54mm (IEEE-315)-17.8-12.7-7.6-2.52.57.612.717.833.027.922.917.812.77.62.5-2.5-7.6-12.7-17.8-22.9-27.9-33.0mm
2. 2D FOOTPRINT
1234567891011121314151617181920212223242526272829303132333435363738394041424344E=10.00mm · Pitch e=0.80mmD=10.00mm-10-8-6-4-202468101086420-2-4-6-8-10mm
3. 3D CAD MODEL
Package Body: 10.00mm × 10.00mm · Pitch: 0.80mm · Ruler Step: 1.00mmSynced <100ms

Synchronized Pinout (Symbol / 2D / 3D) (44/44)

Touch or hover any pin to highlight concurrently across Symbol, Footprint and 3D
PinSymbolTypeFunction (EN)
1MOSI/PB5I/OMultiplexed I/O & Peripheral Pin MOSI/PB5 (SPI)
2MISO/PB6I/OMultiplexed I/O & Peripheral Pin MISO/PB6 (SPI)
3SCK/PB7I/OMultiplexed I/O & Peripheral Pin SCK/PB7 (SPI)
4RESET#ISystem Enable & Hardware Reset (RESET#)
5VCCPowerPower Supply Input (VCC — 1.8V ~ 5.5V VCC)
6GNDGNDGround Reference Pin (GND)
7XTAL2I/OMultiplexed I/O & Peripheral Pin XTAL2 (RTC/CLK)
8XTAL1I/OMultiplexed I/O & Peripheral Pin XTAL1 (RTC/CLK)
9RXD/PD0I/OMultiplexed I/O & Peripheral Pin RXD/PD0 (UART)
10TXD/PD1I/OMultiplexed I/O & Peripheral Pin TXD/PD1 (UART)
11INT0/PD2I/OMultiplexed I/O & Peripheral Pin INT0/PD2 (General)
12INT1/PD3I/OMultiplexed I/O & Peripheral Pin INT1/PD3 (General)
13OC1B/PD4I/OMultiplexed I/O & Peripheral Pin OC1B/PD4 (PWM)
14OC1A/PD5I/OMultiplexed I/O & Peripheral Pin OC1A/PD5 (PWM)
15ICP1/PD6I/OMultiplexed I/O & Peripheral Pin ICP1/PD6 (General)
16OC2/PD7I/OMultiplexed I/O & Peripheral Pin OC2/PD7 (General)
17VCCPowerPower Supply Input (VCC — 1.8V ~ 5.5V VCC)
18GNDGNDGround Reference Pin (GND)
19SCL/PC0I/OMultiplexed I/O & Peripheral Pin SCL/PC0 (I2C)
20SDA/PC1I/OMultiplexed I/O & Peripheral Pin SDA/PC1 (I2C)
21TCK/PC2I/OMultiplexed I/O & Peripheral Pin TCK/PC2 (General)
22TMS/PC3I/OMultiplexed I/O & Peripheral Pin TMS/PC3 (General)
23TDO/PC4I/OMultiplexed I/O & Peripheral Pin TDO/PC4 (General)
24TDI/PC5I/OMultiplexed I/O & Peripheral Pin TDI/PC5 (General)
25TOSC1/PC6I/OMultiplexed I/O & Peripheral Pin TOSC1/PC6 (General)
26TOSC2/PC7I/OMultiplexed I/O & Peripheral Pin TOSC2/PC7 (General)
27AVCCPowerPower Supply Input (AVCC — 1.8V ~ 5.5V VCC)
28GNDGNDGround Reference Pin (GND)
29AREFI/OMultiplexed I/O & Peripheral Pin AREF (ADC)
30PA7/ADC7I/OMultiplexed I/O & Peripheral Pin PA7/ADC7 (ADC)
31PA6/ADC6I/OMultiplexed I/O & Peripheral Pin PA6/ADC6 (ADC)
32PA5/ADC5I/OMultiplexed I/O & Peripheral Pin PA5/ADC5 (ADC)
33PA4/ADC4I/OMultiplexed I/O & Peripheral Pin PA4/ADC4 (ADC)
34PA3/ADC3I/OMultiplexed I/O & Peripheral Pin PA3/ADC3 (ADC)
35PA2/ADC2I/OMultiplexed I/O & Peripheral Pin PA2/ADC2 (ADC)
36PA1/ADC1I/OMultiplexed I/O & Peripheral Pin PA1/ADC1 (ADC)
37PA0/ADC0I/OMultiplexed I/O & Peripheral Pin PA0/ADC0 (ADC)
38VCCPowerPower Supply Input (VCC — 1.8V ~ 5.5V VCC)
39GNDGNDExposed Thermal & Ground Pad (GND)
40PB0/XCK/T0I/OMultiplexed I/O & Peripheral Pin PB0/XCK/T0 (General)
41PB1/T1I/OMultiplexed I/O & Peripheral Pin PB1/T1 (General)
42PB2/AIN0/INT2I/OMultiplexed I/O & Peripheral Pin PB2/AIN0/INT2 (ADC)
43PB3/AIN1/OC0I/OMultiplexed I/O & Peripheral Pin PB3/AIN1/OC0 (ADC)
44PB4/SS#I/OMultiplexed I/O & Peripheral Pin PB4/SS# (General)
PIN 1 MOSI/PB5
I/O
Multiplexed I/O & Peripheral Pin MOSI/PB5 (SPI)
Design note: Signal terminal MOSI/PB5 (I/O, 1.8V ~ 5.5V VCC domain). Multiplexed alternate functions: MOSI/PB5. Supported peripheral buses: SPI.
IPC-7351B Solder Density & Span C/G/Z Tuner

Live Embedded Datasheet PDF & Technical Drawing Gallery (6 Standard Drawings + 6 Extracted Figures)

Read the original datasheet PDF directly or click any drawing to view fullscreen
Open PDF in New Window ↗Read Datasheet PDF (.pdf)
PDF VIEWEROfficial Datasheet Document: ATMEGA16-16AUR (MICROCHIP · TQFP-44(10x10))
Scroll, search text (Ctrl+F), or expand directly inside the embedded PDF reader below
1. Realistic 3D PackageREPRESENTATIVE
ATMEGA16-16AUR (TQFP-44(10x10)) - 1. Realistic 3D Package
Detailed solid 3D bodyExpand ›
2. Standard Pinout (Top View)CLEANROOM PINOUT
ATMEGA16-16AUR (TQFP-44(10x10)) - 2. Standard Pinout (Top View)
True package pinout (44 pins)Expand ›
3. Original Datasheet PinoutPDF PINOUT
ATMEGA16-16AUR (TQFP-44(10x10)) - 3. Original Datasheet Pinout
Uncropped datasheet pin diagramExpand ›
4. Package Dimensions (D×E×A)PACKAGE DIMENSIONS
ATMEGA16-16AUR (TQFP-44(10x10)) - 4. Package Dimensions (D×E×A)
TQFP-44(10x10) · 10.00×10.00mm · Pitch 0.80mmExpand ›
5. Recommended Land PatternLAND PATTERN
ATMEGA16-16AUR (TQFP-44(10x10)) - 5. Recommended Land Pattern
IPC-7351B Footprint (44 Pads)Expand ›
6. Application SchematicSCHEMATIC
ATMEGA16-16AUR (TQFP-44(10x10)) - 6. Application Schematic
Typical Application SchematicExpand ›
Original Datasheet Pinouts & Technical Drawings (6 figures · Page 1/1)
Showing 1–6 of 6 uncropped original figures for ATMEGA16
P14 · p14_fig01EXACT PACKAGE
ATMEGA16-16AUR (TQFP-44(10x10)) — 9.1 44A
9.1 44A
P3 · p03_fig011087×2069px
ATMEGA16-16AUR (TQFP-44(10x10)) — Figure 1-1. Pinout ATmega16A
Figure 1-1. Pinout ATmega16A
P3 · p03_fig01P3
ATMEGA16-16AUR (TQFP-44(10x10)) — Datasheet Page 3 (p03_fig01)
Datasheet Page 3 (p03_fig01)
P14 · p14_fig01P14
ATMEGA16-16AUR (TQFP-44(10x10)) — Datasheet Page 14 (p14_fig01)
Datasheet Page 14 (p14_fig01)
P15 · p15_fig011954×2189px
ATMEGA16-16AUR (TQFP-44(10x10)) — 9.2 40P6 | PIN | 1 | E1 | A1 | B | REF | E | B1 | C | L | SEATING PLANE | A | 0º ~ 15º | D | e | eB | COMMON DIMENSIONS | (Unit of Measure = mm) | SYMBOL MIN NOM MAX NOTE | A - - 4.826 | A1 0.381 - - | D 52.070 - 52.578 Note 2 | E 15.240 -
9.2 40P6 | PIN | 1 | E1 | A1 | B | REF | E | B1 | C | L | SEATING PLANE | A | 0º ~ 15º | D | e | eB | COMMON DIMENSIONS | (Unit of Measure = mm) | SYMBOL MIN NOM MAX NOTE | A - - 4.826 | A1 0.381 - - | D 52.070 - 52.578 Note 2 | E 15.240 -
P16 · p16_fig011949×2149px
ATMEGA16-16AUR (TQFP-44(10x10)) — 9.3 44M1 | 02/13/2014 | COMMON DIMENSIONS | (Unit of Measure = mm) | SYMBOL MIN NOM MAX NOTE | A 0.80 0.90 1.00 | A1 - 0.02 0.05 | A3 0.20 REF | b 0.18 0.23 0.30 | D | D2 5.00 5.20 5.40 | 6.90 7.00 7.10 | 6.90 7.00 7.10 | E | E2 5.00 5.20 5
9.3 44M1 | 02/13/2014 | COMMON DIMENSIONS | (Unit of Measure = mm) | SYMBOL MIN NOM MAX NOTE | A 0.80 0.90 1.00 | A1 - 0.02 0.05 | A3 0.20 REF | b 0.18 0.23 0.30 | D | D2 5.00 5.20 5.40 | 6.90 7.00 7.10 | 6.90 7.00 7.10 | E | E2 5.00 5.20 5

Technical Specifications & Part Details (ATMEGA16-16AUR)

Summary of electrical parameters, mechanical dimensions, voltage range and peripheral interfaces from Datasheet (EN)
Embedded Microcontroller Unit (MCU)
Detailed Overview:ATMEGA16-16AUR (TQFP-44(10x10)) is a 44-pin embedded microcontroller unit (mcu) featuring a 10.00 × 10.00 × 1.00 mm mechanical envelope (lead pitch e = 0.80 mm). Rated for 2.7 - 5.5V supply operation across -40°C ~ +85°C (Industrial Grade) with integrated UART, SPI, I2C, ADC, PWM, JTAG / SWD, RTC/CLK interfaces.
Operating Supply VoltageV_CC / V_DD
2.7 - 5.5V
Place 100nF + 10µF X7R decoupling capacitors < 2mm from supply pins
Ambient Operating TemperatureT_A
-40°C ~ +85°C (Industrial Grade)
Industrial temperature grade; T_J(max) = +125°C
Clock / RF Operating Frequencyf_CLK / f_RF
16MHz
Extracted from authoritative PDF specification tables
Current & Power RatingI_OUT / I_CC
I_GPIO(max) = ±20 mA / pin | I_VDD(total) ≤ 150 mA
44 5V-tolerant (FT) pins detected
Package Envelope (D × E × A)D × E × A
10.00 × 10.00 × 1.00 mm (A1=0.10 mm)
Package family: TQFP (TQFP-44(10x10))
Pin Count & Lead PitchN / e
44 Pins | Pitch e = 0.80 mm (31.5 mil)
Normalized to Center-to-Center Span C per IPC-7351B
Integrated Peripheral InterfacesBuses
UART, SPI, I2C, ADC, PWM, JTAG / SWD, RTC/CLK
Cross-linked with 4D Pinout & Schematic Symbol
Reflow & Moisture SensitivityIPC / MSL
IPC-7351B Level B | J-STD-020 (Peak 260°C) | MSL-3
60% windowed solder paste stencil on thermal EPAD
Engineering Safety Alert: Verify Pin-1 chamfer orientation on Top Silkscreen prior to SMT pick-and-place assembly.
Engineering Safety Alert: Connect exposed thermal pad (if present) to internal ground plane via 0.3mm stitched thermal vias.

5-Point Standards Verification

Automated compliance checks prior to export
5/5 PASS
IEEE-315 Symbol44 auto-grouped pins
OK
IPC-7351B Land Pattern44 pads · Pitch 0.80mm
OK
IPC-7525 60% Solder PasteReflow 1:1 Standard
OK
DFM Rules JLCPCB / PCBWayMin pad clearance: 0.25mm
OK
3D STEP AP214 & GLBAligned coordinate origin (0,0,0)
OK

Hardware Verification & Community Engineering Reviews

Summary of electrical parameters, mechanical dimensions, voltage range and peripheral interfaces from Datasheet
5.00 PCB Verified

Mechanical Dimensions & Land Pattern (TQFP-44(10x10))

Extracted from Datasheet & IPC-7351B Normalized
mm
Package Body (D × E)Nominal
10.00 × 10.00 mm
Height (A) & Pitch (e)IPC-7351B
A=1.00mm · e=0.80mm
Pad Size (W × L)Level B
0.50 × 1.50 mm
Pins / Total PadsTopology
44P / 44Pad (QUAD_ROW)

Recommended Companion BOM & Drop-In Equivalents

Passive external components per reference schematic and 1:1 pin-compatible alternatives
DFM READY
Designator / Replacement MPNValue / PackageFunction & PCB Layout Rule
N/A
BOM
Per application circuit
TQFP-44(10x10)
Size power & signal trace widths for rated load current following IPC-2221 clearance rules.

Technical Frequently Asked Questions (FAQ) — ATMEGA16-16AUR (TQFP-44(10x10))

Quick answers covering Pinout, IPC-7351B Land Pattern dimensions, and CAD export formats
IPC-7351B / IEEE-315

What is the Pinout and operating voltage specification of ATMEGA16-16AUR (TQFP-44(10x10))?

Manufactured by MICROCHIP, the ATMEGA16-16AUR is housed in a TQFP-44(10x10) package with 44 pins and a 0.80 mm lead pitch, supporting a VCC supply range of 2.7 - 5.5V. Key pins include: 1 (MOSI/PB5: Multiplexed I/O & Peripheral Pin MOSI/PB5 (SPI)), 2 (MISO/PB6: Multiplexed I/O & Peripheral Pin MISO/PB6 (SPI)), 3 (SCK/PB7: Multiplexed I/O & Peripheral Pin SCK/PB7 (SPI)), 4 (RESET#: System Enable & Hardware Reset (RESET#)), 5 (VCC: Power Supply Input (VCC — 1.8V ~ 5.5V VCC)), 6 (GND: Ground Reference Pin (GND)).

What are the IPC-7351B PCB Footprint dimensions for ATMEGA16-16AUR?

Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), ATMEGA16-16AUR (TQFP-44(10x10)) has a nominal body envelope of 10.00 × 10.00 mm, pitch e = 0.80 mm, and 44 copper pads.

Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for ATMEGA16-16AUR?

You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for ATMEGA16-16AUR (MICROCHIP, TQFP-44(10x10)) 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 (44 pins) & ATMEGA16 Family VariantsExpand static table
Pin #Signal NameElectrical TypeFunctional Description & Design Notes
1MOSI/PB5Digital_IOSignal terminal MOSI/PB5 (I/O, 1.8V ~ 5.5V VCC domain). Multiplexed alternate functions: MOSI/PB5. Supported peripheral buses: SPI.
2MISO/PB6Digital_IOSignal terminal MISO/PB6 (I/O, 1.8V ~ 5.5V VCC domain). Multiplexed alternate functions: MISO/PB6. Supported peripheral buses: SPI.
3SCK/PB7Digital_IOSignal terminal SCK/PB7 (I/O, 1.8V ~ 5.5V VCC domain). Multiplexed alternate functions: SCK/PB7. Supported peripheral buses: SPI.
4RESET#Digital_IOActive-low hardware reset terminal (RESET#): pulling this pin Low resets the processor core and peripherals.
5VCCPower_InPrimary positive power supply input (VCC) operating in the 1.8V ~ 5.5V VCC domain (Max rating: 6.0V).
6GNDGND0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
7XTAL2Digital_IOSignal terminal XTAL2 (I/O, 1.8V ~ 5.5V VCC domain). Multiplexed alternate functions: XTAL2. Supported peripheral buses: RTC/CLK.
8XTAL1Digital_IOSignal terminal XTAL1 (I/O, 1.8V ~ 5.5V VCC domain). Multiplexed alternate functions: XTAL1. Supported peripheral buses: RTC/CLK.
9RXD/PD0Digital_IOSignal terminal RXD/PD0 (I/O, 1.8V ~ 5.5V VCC domain). Multiplexed alternate functions: RXD/PD0. Supported peripheral buses: UART.
10TXD/PD1Digital_IOSignal terminal TXD/PD1 (I/O, 1.8V ~ 5.5V VCC domain). Multiplexed alternate functions: TXD/PD1. Supported peripheral buses: UART.
11INT0/PD2Digital_IOSignal terminal INT0/PD2 (I/O, 1.8V ~ 5.5V VCC domain). Multiplexed alternate functions: INT0/PD2. Supported peripheral buses: General.
12INT1/PD3Digital_IOSignal terminal INT1/PD3 (I/O, 1.8V ~ 5.5V VCC domain). Multiplexed alternate functions: INT1/PD3. Supported peripheral buses: General.
13OC1B/PD4Digital_IOSignal terminal OC1B/PD4 (I/O, 1.8V ~ 5.5V VCC domain). Multiplexed alternate functions: OC1B/PD4. Supported peripheral buses: PWM.
14OC1A/PD5Digital_IOSignal terminal OC1A/PD5 (I/O, 1.8V ~ 5.5V VCC domain). Multiplexed alternate functions: OC1A/PD5. Supported peripheral buses: PWM.
15ICP1/PD6Digital_IOSignal terminal ICP1/PD6 (I/O, 1.8V ~ 5.5V VCC domain). Multiplexed alternate functions: ICP1/PD6. Supported peripheral buses: General.
16OC2/PD7Digital_IOSignal terminal OC2/PD7 (I/O, 1.8V ~ 5.5V VCC domain). Multiplexed alternate functions: OC2/PD7. Supported peripheral buses: General.
17VCCPower_InPrimary positive power supply input (VCC) operating in the 1.8V ~ 5.5V VCC domain (Max rating: 6.0V).
18GNDGND0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
19SCL/PC0Digital_IOSignal terminal SCL/PC0 (I/O, 1.8V ~ 5.5V VCC domain). Multiplexed alternate functions: SCL/PC0. Supported peripheral buses: I2C.
20SDA/PC1Digital_IOSignal terminal SDA/PC1 (I/O, 1.8V ~ 5.5V VCC domain). Multiplexed alternate functions: SDA/PC1. Supported peripheral buses: I2C.
21TCK/PC2Digital_IOSignal terminal TCK/PC2 (I/O, 1.8V ~ 5.5V VCC domain). Multiplexed alternate functions: TCK/PC2. Supported peripheral buses: General.
22TMS/PC3Digital_IOSignal terminal TMS/PC3 (I/O, 1.8V ~ 5.5V VCC domain). Multiplexed alternate functions: TMS/PC3. Supported peripheral buses: General.
23TDO/PC4Digital_IOSignal terminal TDO/PC4 (I/O, 1.8V ~ 5.5V VCC domain). Multiplexed alternate functions: TDO/PC4. Supported peripheral buses: General.
24TDI/PC5Digital_IOSignal terminal TDI/PC5 (I/O, 1.8V ~ 5.5V VCC domain). Multiplexed alternate functions: TDI/PC5. Supported peripheral buses: General.
25TOSC1/PC6Digital_IOSignal terminal TOSC1/PC6 (I/O, 1.8V ~ 5.5V VCC domain). Multiplexed alternate functions: TOSC1/PC6. Supported peripheral buses: General.
26TOSC2/PC7Digital_IOSignal terminal TOSC2/PC7 (I/O, 1.8V ~ 5.5V VCC domain). Multiplexed alternate functions: TOSC2/PC7. Supported peripheral buses: General.
27AVCCPower_InPrimary positive power supply input (AVCC) operating in the 1.8V ~ 5.5V VCC domain (Max rating: 6.0V).
28GNDGND0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
29AREFDigital_IOSignal terminal AREF (I/O, 1.8V ~ 5.5V VCC domain). Multiplexed alternate functions: AREF. Supported peripheral buses: ADC.
30PA7/ADC7AnalogSignal terminal PA7/ADC7 (I/O, 1.8V ~ 5.5V VCC domain). Multiplexed alternate functions: PA7/ADC7. Supported peripheral buses: ADC.
31PA6/ADC6AnalogSignal terminal PA6/ADC6 (I/O, 1.8V ~ 5.5V VCC domain). Multiplexed alternate functions: PA6/ADC6. Supported peripheral buses: ADC.
32PA5/ADC5AnalogSignal terminal PA5/ADC5 (I/O, 1.8V ~ 5.5V VCC domain). Multiplexed alternate functions: PA5/ADC5. Supported peripheral buses: ADC.
33PA4/ADC4AnalogSignal terminal PA4/ADC4 (I/O, 1.8V ~ 5.5V VCC domain). Multiplexed alternate functions: PA4/ADC4. Supported peripheral buses: ADC.
34PA3/ADC3AnalogSignal terminal PA3/ADC3 (I/O, 1.8V ~ 5.5V VCC domain). Multiplexed alternate functions: PA3/ADC3. Supported peripheral buses: ADC.
35PA2/ADC2AnalogSignal terminal PA2/ADC2 (I/O, 1.8V ~ 5.5V VCC domain). Multiplexed alternate functions: PA2/ADC2. Supported peripheral buses: ADC.
36PA1/ADC1AnalogSignal terminal PA1/ADC1 (I/O, 1.8V ~ 5.5V VCC domain). Multiplexed alternate functions: PA1/ADC1. Supported peripheral buses: ADC.
37PA0/ADC0AnalogSignal terminal PA0/ADC0 (I/O, 1.8V ~ 5.5V VCC domain). Multiplexed alternate functions: PA0/ADC0. Supported peripheral buses: ADC.
38VCCPower_InPrimary positive power supply input (VCC) operating in the 1.8V ~ 5.5V VCC domain (Max rating: 6.0V).
39GNDGNDBottom exposed die attach pad (GND) providing primary thermal conduction path to the PCB and low-inductance 0V ground return.
40PB0/XCK/T0Digital_IOSignal terminal PB0/XCK/T0 (I/O, 1.8V ~ 5.5V VCC domain). Multiplexed alternate functions: PB0/XCK/T0. Supported peripheral buses: General.
41PB1/T1Digital_IOSignal terminal PB1/T1 (I/O, 1.8V ~ 5.5V VCC domain). Multiplexed alternate functions: PB1/T1. Supported peripheral buses: General.
42PB2/AIN0/INT2AnalogSignal terminal PB2/AIN0/INT2 (I/O, 1.8V ~ 5.5V VCC domain). Multiplexed alternate functions: PB2/AIN0/INT2. Supported peripheral buses: ADC.
43PB3/AIN1/OC0AnalogSignal terminal PB3/AIN1/OC0 (I/O, 1.8V ~ 5.5V VCC domain). Multiplexed alternate functions: PB3/AIN1/OC0. Supported peripheral buses: ADC.
44PB4/SS#Digital_IOSignal terminal PB4/SS# (I/O, 1.8V ~ 5.5V VCC domain). Multiplexed alternate functions: PB4/SS#. Supported peripheral buses: General.
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