STR750F datasheet(20/73 Pages) STMICROELECTRONICS

20 / 73 page

Pin Description

STR750F

20/71

P1.01 / TIM0_TI2

I/O

XO2

Port 1.01

TIM0: Input Capture / trigger /

external clock 2 (remappable to

P0.05)(6)

P1.00 /

TIM0_OC2

I/O

XO2

Port 1.00

TIM0: Output compare 2

(remappable to P0.04)(6)

V18

Stabilization for main voltage regulator. Requires

external capacitors 33nF between V18 and VSS18.

See Figure 4.

To be connected to the 1.8V external power supply

when embedded regulators are not used.

VSS18

Ground Voltage for the main voltage regulator.

VSS_IO

Ground Voltage for digital I/Os

VDD_IO

Supply Voltage for digital I/Os

100

P0.03 / TIM2_TI1

/ ADC_IN1

I/O

XO2

Port 0.03

TIM2: Input

Capture / trigger

/ external clock 1

ADC: analog

input 1

None of the I/Os are True Open Drain: when configured as Open Drain, there is always a protection diode between the I/O

pin and VDD_IO.

In the 100-pin package, this Alternate Function is duplicated on two ports. You can configure one port to use this AF, the

other port is then free for general purpose I/O (GPIO), external interrupt/wake-up lines, or analog input (ADC_IN) where

these functions are listed in the table.

It is mandatory that the NJTRST pin is reset to ground during the power-up phase. It is recommended to connect this pin to

NRSTOUT pin (if available) or NRSTIN.

After reset, these pins are enabled as JTAG alternate function see (Port Reset State on page 15). To use these ports as

general purpose I/O (GPIO), the DBGOFF control bit in the GPIO_REMAP0R register must be set by software (in this case,

debugging these I/Os via JTAG is not possible).

There are two different TQFP and BGA 64-pin packages: in the first one, pins 41 and 42 are mapped to USB DN/DP while

for the second one, they are mapped to P0.15/CAN_TX and P0.14/RX.

For details on remapping these alternate functions, refer to the GPIO_REMAP0R register description.

Table 5.

STR750F pin description (continued)

Pin n°

Pin Name

Input

Output

Main

function

(after

reset)

Alternate function

(1)

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