TC35681FSG datasheet(39/91 Pages) TOSHIBA

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TC35680FSG-002/TC35681FSG-002

2019-04-04

General-purpose Output Function

The general-purpose output of a GPIO pin is enabled by the API or the corresponding register in Table 4-3 when the function 0 in

Table 2-2 is assigned to the pin. The output data can be set to a GPIO pin, or to multiple pins at once, using the register described in

Table 4-3. The output settings of the pin and the output data are held even after this device enters a low power mode.

I/O Latch Function

When TC35680/TC35681 enter a low power mode such as the Sleep mode, the Backup mode, or the Deep Sleep mode, the

devices latch the setting data of the GPIO pins which are described in Section 4.6.2.

This function is also done when another multiplexed function is set to the GPIO pin.

The latch data is initialized by the hardware reset.

Interrupt Function

4.6.6.1. Interrupt in Active Mode

Every GPIO pin can be set to receiving an external interrupt request. The setting method and others are shown in Table 4-4.

One of the following detections of the interrupt request can be assigned to the pin.



Edge detection of the interrupt request (a rising edge, a falling edge, or both edges)



Level detection of the interrupt request (High level or Low level)



Interrupt disable (No detection)

The initial setting is “Interrupt disable”.

Proper API’s can set the interrupt and get the interrupt cause. It is unnecessary to control the corresponding register directly.

TC35680/TC35681 do not detect the interrupt request during a transition to low power mode.

Table 4-4 Getting interrupt cause, clearing, and Call-back function

Item

Setting method

API

Interrupt setting

SYS_API_SetGpioCfgReg

GPIO_CFG

Getting interrupt cause

The information of the generated GPIO interrupt is sent to

the argument in the call-back function which is registered

by a user.

SYS_API_HwGpioIntHandlerInstall should be used.

—

Interrupt cause clear

The factor is cleared automatically by the built-in firmware.

—

Call-back function

SYS_API_HwGpioIntHandlerInstall

—

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