F280041PMS datasheet(49/230 Pages) TI

49 / 230 page

6.5 Pins With Internal Pullup and Pulldown

Some pins on the device have internal pullups or pulldowns. Table 6-9 lists the pull direction and when it is

active. The pullups on GPIO pins are disabled by default and can be enabled through software. To avoid any

floating unbonded inputs, the Boot ROM will enable internal pullups on GPIO pins that are not bonded out in a

particular package. Other pins noted in Table 6-9 with pullups and pulldowns are always on and cannot be

disabled.

Table 6-9. Pins With Internal Pullup and Pulldown

RESET

(XRSn = 0)

DEVICE BOOT

APPLICATION

GPIOx (including AIOs)

Pullup disabled

Pullup disabled(1)

Application defined

GPIO35/TDI

Pullup disabled

Application defined

GPIO37/TDO

Pullup disabled

Application defined

TCK

Pullup active

TMS

Pullup active

VREGENZ

Pulldown active

XRSn

Pullup active

Other pins

No pullup or pulldown present

(1)

Pins not bonded out in a given package will have the internal pullups enabled by the Boot ROM.

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TMS320F280049, TMS320F280049C, TMS320F280048, TMS320F280048C, TMS320F280045,

TMS320F280041, TMS320F280041C, TMS320F280040, TMS320F280040C

SPRS945F – JANUARY 2017 – REVISED FEBRUARY 2021

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TMS320F280045 TMS320F280041 TMS320F280041C TMS320F280040 TMS320F280040C

F280041PMS Datasheet(PDF) 49 Page - Texas Instruments