CYT4BFBCJS datasheet(21/217 Pages) INFINEON

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Datasheet

21 of 217

002-21617 Rev. *J

2022-02-18

TRAVEO™ T2G 32-bit Automotive MCU

Based on Arm® Cortex®-M7 dual

Functional description

3.4.1

Port nomenclature

Px.y describes a particular bit “y” available within an I/O port “x.”

For example, P4.2 reads “port 4, bit 2”.

Each I/O implements the following:

• Programmable drive mode

- High impedance

- Resistive pull-up

- Resistive pull-down

- Open drain with strong pull-down

- Open drain with strong pull-up

- Strong pull-up or pull-down

- Weak pull-up or pull-down

CYT4BF has three types of programmable I/Os: GPIO Standard, GPIO Enhanced, and HSIO Standard.

3.4.2

GPIO Standard (GPIO_STD)

Supports standard automotive signaling across the 2.7-V to 5.5-V VDDIO range. GPIO Standard I/Os have multiple

configurable drive levels, drive modes, and selectable input levels.

3.4.3

GPIO Enhanced (GPIO_ENH)

Supports extended functionality automotive signaling across the 2.7-V to 5.5-V VDDIO range with higher currents

at lower voltages (full I2C timing support, slew-rate control).

Both GPIO_STD and GPIO_ENH implement the following:

• Configurable input threshold (CMOS, TTL, or Automotive)

• Hold mode for latching previous state (used for retaining the I/O state in DeepSleep mode)

• Analog input mode (input and output buffers disabled)

3.4.4

HSIO Standard (HSIO_STD)

These I/Os are optimized exclusively for high-speed signaling and do not support slew-rate control, DeepSleep

operation, POR mode control, analog connections, or non-CMOS signaling levels. HSIO_STD supports high-speed

peripherals such as QSPI, HYPERBUS™, Ethernet, and SDHC controller. HSIO_STD also supports programmable

drive strength. These I/Os are available only in Active mode and retain state in DeepSleep mode.

3.4.5

Smart I/O

Smart I/O allows Boolean operations on signals going to the I/O from the subsystems of the chip or on signals

coming into the chip. CYT4BF has five Smart I/O blocks. Operation can be synchronous or asynchronous and the

blocks operate in all device power modes except for Hibernate.

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