ATSAMB11XR datasheet(16/87 Pages) MICROCHIP

16 / 87 page

Table 5-2. I/O Pin Behavior in the Different Device States (1)

Device State

VDDIO CHIP_EN

Output Driver

Input Driver

Pull Up/Down

Resistor (2)

Power_Down: core supply

off

High

Low

Disabled (Hi-Z)

Disabled

Power-on Reset: core

supply on, POR hard reset

pulse on

High

Disabled (Hi-Z)

Disabled

Disabled (3)

Power-on Default: core

supply on, device out of

reset but not programmed

yet

High

Disabled (Hi-Z)

Enabled(4)

Enabled Pull-Up (4)

MCU_Only, BLE_On: core

supply on, device

programmed by firmware

High

Programmed by

firmware for each

pin: Enabled or

Disabled (Hi-Z)

(5) ,when Enabled

driving 0 or 1

Opposite of

Output

Driver state:

Disabled or

Enabled (5)

Programmed by

firmware for each

pin: Enabled or

Disabled, Pull-Up

or Pull- Down(5)

Ultra_Low_Power:

core supply on for always-

on domain, core supply off

for switchable domains

High

Retains previous

state(6) for each pin:

Enabled or Disabled

(Hi-Z), when

Enabled driving 0 or

Opposite of

Output

Driver state:

Disabled or

Enabled(6)

Retains previous

state (6) for each

pin: Enabled or

Disabled, Pull-Up

or Pull-Down

Note:

This table applies to all three types of I/O pins (digital switchable domain GPIOs, digital always-on/

wake-up GPIO, and mixed-signal GPIOs) unless otherwise noted.

Pull-up/down resistor value is 96 kOhm ±10%.

In Power-on Reset state, the pull-up resistor is enabled in the always-on/wake-up GPIO only.

In Power-on Default state, the input drivers and pull-up/down resistors are disabled in the mixed-

signal GPIOs only (mixed-signal GPIOs are defaulted to analog mode, see the note below).

Mixed-signal GPIOs can be programmed to be in analog or digital mode for each pin: when

programmed to analog mode (default), the output driver, input driver, and pull-up/down resistors are

all disabled.

In Ultra_Low_Power state, the always-on/wake-up GPIO does not have retention capability and

behaves same as in MCU_Only or BLE_On states, also for mixed-signal GPIOs programming

analog mode overrides retention functionality for each pin.

ATSAMB11XR/ZR

Datasheet Preliminary

DS70005342A-page 16

ATSAMB11XR датащи(PDF) 16 Page - Microchip Technology

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