SPRS742L June 2011 – February 2021 F28M35E20B , F28M35H22C , F28M35H52C , F28M35H52C-Q1 , F28M35M22C , F28M35M52C
PRODUCTION DATA
Most Concerto external pins are shared among many internal peripherals. This sharing of pins is accomplished through several I/O muxes where a specific physical pin can be assigned to selected signals of internal peripherals.
Most of the I/O pins of the Concerto MCU can also be configured as programmable GPIOs. Exceptions include the X1 and X2 oscillator inputs; the XRS digital reset and ARS analog reset; the VREG12EN and VREG18EN internal voltage regulator enables; and five JTAG pins. The 74 primary GPIOs are grouped in 2 programmable blocks: GPIO_MUX1 block (66 pins) and GPIO_MUX2 block (8 pins). Additionally, eight secondary GPIOs are available through the AIO_MUX1 block (four pins) and AIO_MUX2 block (four pins). Figure 8-14 shows the GPIOs and other pins.