is pullup required on nrf51822 and nrf52832 when GPIO configured for SPI?

[cgadgil]

I am using the sensors LIS2DH12 and the BMP280 in my new design, both of which work on SPI. i will be using both the nrf51822 and the nrf52832 in separate designs with same sensors. i want to understand if external pullups are required to be used in my design for the SPI bus. i see that output is buffered for GPIO in the nrf51 and the nrf52 ic's. So is this an open collector buffer or is it push pull type output?

i tried using the LIS2DH earlier without using any pullups and it works. but i want to confirm for a generic design point of view for future references.

regards

chetana

[haakonsh]

You do not need pullups with SPI, is uses the standard push-pull configuration (CMOS).