43.8 I/O Pin Electrical Specifications

Table 43-11. I/O Pin Electrical Specifications
DC CHARACTERISTICS Standard Operating Conditions: VDD and VDDIO 2.7V to 5.5V (unless otherwise stated)

Operating temperature: -40°C ≤ TA ≤ +85°C for Industrial
Param. No. Symbol Characteristics(1) Min. Typical Max. Units Conditions
DI_1 VIL Input Low-Voltage I/O Pins GND — 0.3*VDD V 2.7V ≤ VDD/VDDIO ≤ 5.5V
DI_3 VIH Input High Voltage 0.7*VDD — VDD/VDDIO V
DI_5 VOL Output voltage low (Standard pins, Low Drv Strength, DRVSTR = 0)(6) — — 0.2*VDD V 2.7V ≤ VDD/VDDIO ≤ 5.5V @

IOL (2.7V ≤ VDD < 4.5V) = 2.5 mA,

IOL (4.5V ≤ VDD ≤ 5.5V) = 5 mA
DI_6 Output voltage low (High Sink, Low Drv Strength, DRVSTR = 0) (5) 2.7V ≤ VDD/VDDIO ≤ 5.5V @

IOL (2.7V ≤ VDD < 4.5V) = 5 mA,

IOL (4.5V ≤ VDD ≤ 5.5V) = 10 mA
DI_7 Output voltage low (Standard pins, High Drv Strength, DRVSTR = 1)(6) 2.7V ≤ VDD/VDDIO ≤ 5.5V @

IOL (2.7V ≤ VDD < 4.5V) = 5 mA,

IOL (4.5V ≤ VDD ≤ 5.5V) = 10 mA
DI_8 Output voltage low (High Sink, High Drv Strength, DRVSTR = 1) (5) 2.7V ≤ VDD/VDDIO ≤ 5.5V @

IOL (2.7V ≤ VDD < 4.5V) = 10 mA,

IOL (4.5V ≤ VDD ≤ 5.5V) = 20 mA
DI_9 VOH Output voltage High (Standard pins, Low Drv Strength, DRVSTR = 0)(6) 0.8*VDD — — — 2.7V ≤ VDD/VDDIO ≤ 5.5V @

IOL (2.7V ≤ VDD < 4.5V) = 1.5 mA,

IOL (4.5V ≤ VDD ≤ 5.5V) = 3 mA
DI_10 Output voltage High (High Sink, Low Drv Strength, DRVSTR = 0) (5) 2.7V ≤ VDD/VDDIO ≤ 5.5V @

IOL (2.7V ≤ VDD < 4.5V) = 3 mA,

IOL (4.5V ≤ VDD ≤ 5.5V) = 6 mA
DI_11 Output voltage High (Standard pins, High Drv Strength, DRVSTR = 1)(6) 2.7V ≤ VDD/VDDIO ≤ 5.5V @

IOL (2.7V ≤ VDD < 4.5V) = 3 mA,

IOL (4.5V ≤ VDD ≤ 5.5V) = 6 mA
DI_12 Output voltage High (High Sink, High Drv Strength, DRVSTR = 1) (5) 2.7V ≤ VDD/VDDIO ≤ 5.5V @

IOL (2.7V ≤ VDD < 4.5V) = 6 mA,

IOL (4.5V ≤ VDD ≤ 5.5V) = 12 mA
DI_13 IIL Input pin leakage current — — 1 µA GND ≤ VPIN ≤ 5.5V (VPIN = Voltage present on Pin)
DI_15 RPDWN Internal Pull-Dwn (DIR = OUT = 0, PULLEN = 1) — — 52 kΩ 2.7V ≤ VDD/VDDIO ≤ 5.5V
DI_17 RPUP Internal Pull-Up (DIR= 0, OUT=PULLEN = 1) — — 52 kΩ
DI_19 IICL Input Low Injection Current -1 — — mA NOTE: 1,3,4 This parameter applies to all I/O pins.
DI_21 IICH Input High Injection Current — — 15 mA NOTE: 2,3,4 This parameter applies to all pins
DI_23 ∑IICT Total Input Injection Current (sum of all I/O and control pins) Absolute value of | ∑IICT | — — 45 mA Absolute instantaneous sum of all ± input injection currents from all I/O pins. ( | IICL | + | IICH | ) ≤ ∑IICT
DI_25 TRISE I/O pin Rise Time (Standard pins, Low Drv Strength, DRVSTR = 0) (6) — — 22.5 ns VDDIO(min), CLOAD = 30 pF (MAX)
I/O pin Rise Time (High Sink, Low Drv Strength, DRVSTR = 0) (5) — — 16 ns
I/O pin Rise Time (Standard pins, High Drv Strength, DRVSTR = 1)(6) — — 13.1 ns
I/O pin Rise Time (High Sink, High Drv Strength, DRVSTR = 1) (5) — — 10.1 ns
DI_27 TFALL I/O pin Fall Time (Standard pins, Low Drv Strength, DRVSTR = 0) (6) — — 22.4 ns
I/O pin Fall Time (High Sink, Low Drv Strength, DRVSTR = 0) (5) — — 18.1 ns
I/O pin Fall Time (Standard pins, High Drv Strength, DRVSTR = 1) (6) — — 12.9 ns
I/O pin Fall Time (High Sink, High Drv Strength, DRVSTR = 1) (5) — — 11.3 ns
Note:
  1. VIL source < (GND - 0.3). Characterized but not tested.
  2. 5.5V < VIH source ≤ 5.8V. Characterized but not tested.
  3. If the sum of all injection currents are > | ∑IICT | it can affect the ADC results by approximately 4 to 6 counts (i.e., VIH Source > (VDDIO + 0.3) or VIL source < (GND - 0.3)).
  4. Any number and/or the combination of I/O pins not excluded under IICL or IICH conditions are permitted provided the “absolute instantaneous” sum of the input injection currents from all pins do not exceed the specified ∑IICT limit. To limit the injection current the user must insert a resistor in series RSERIES, (i.e. RS), between input source voltage and device pin. The resistor value is calculated according to:
    • For negative Input voltages less than (GND-0.3): RS ≥ absolute value of | ((VIL source - (GND - 0.3)) / IICL) |
    • For positive input voltages greater than (VDDIO + 0.3): RS ≥ absolute value of | ((VIH source - (VDDIO + 0.3)) / IICH) |
    • For Vpin voltages >VDDIO +0.3 and <GND-0.3 then RS = the larger of the values calculated above.
  5. The following pins are High Sink pins and have different properties than standard pins: PA10, PA11, PB10, PB11.
  6. The following pins are TWIHS pins and have the same properties as standard pins when not used as SERCOM I2C pins: PA08, PA09, PA12, PA13, PA16, PA17, PA22, PA23. When used in SERCOM I2C mode, refer to I2CM_5/7 and I2CS_5/7 parameters.