at32ap7002 ATMEL Corporation, at32ap7002 Datasheet - Page 16

• Manufacturer Part Number: at32ap7002
• Description: Avr 32 32-bit Microcontroller
• Manufacturer: ATMEL Corporation

5. I/O Line Considerations
5.1
5.2
5.3
5.4
5.5
5.6
32054DS–AVR32–10/07
JTAG pins
WAKE_N pin
RESET_N pin
EVTI_N pin
TWI pins
PIO pins
The TMS, TDI and TCK pins have pull-up resistors. TDO is an output, driven at up to VDDIO,
and have no pull-up resistor. The TRST_N pin is used to initialize the embedded JTAG TAP
Controller when asserted at a low level. It is a schmitt input and integrates permanent pull-up
resistor to VDDIO, so that it can be left unconnected for normal operations.
The WAKE_N pin is a schmitt trigger input integrating a permanent pull-up resistor to VDDIO.
The RESET_N pin is a schmitt input and integrates a permanent pull-up resistor to VDDIO. As
the product integrates a power-on reset cell, the RESET_N pin can be left unconnected in case
no reset from the system needs to be applied to the product.
The EVTI_N pin is a schmitt input and integrates a non-programmable pull-up resistor to VDDIO.
When these pins are used for TWI, the pins are open-drain outputs with slew-rate limitation and
inputs with inputs with spike-filtering. When used as GPIO-pins or used for other peripherals, the
pins have the same characteristics as PIO pins.
All the I/O lines integrate a programmable pull-up resistor. Programming of this pull-up resistor is
performed independently for each I/O line through the PIO Controllers. After reset, I/O lines
default as inputs with pull-up resistors enabled, except when indicated otherwise in the column
“Reset State” of the PIO Controller multiplexing tables.
AT32AP7002
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