EM351-RTR datasheet(11/240 Pages) ETC2

11 / 240 page

EM351 / EM357

1-7

120-035X-000D

Preliminary

Pin #

Signal

Direction

Description

SC1MOSI

SPI slave data in of Serial Controller 1

Select SPI with SC1_MODE

Select slave with SC1_SPICR

SC1SCL

I/O

TWI clock of Serial Controller 1

Either disable timer output in TIM2_CCER,

or disable remap with TIM2_OR[5]

Select TWI with SC1_MODE

Select alternate open-drain output function with GPIO_PBCFGL[11:8]

SC1RXD

UART receive data of Serial Controller 1

Select UART with SC1_MODE

TIM2C2

(see also Pin 25)

Timer 2 channel 2 output

Enable remap with TIM2_OR[5]

Enable timer output in TIM2_CCER

Select alternate output function with GPIO_PBCFGL[11:8]

TIM2C2

(see also Pin 25)

Timer 2 channel 2 input

Enable remap with TIM2_OR[5]

SWCLK

I/O

Serial Wire clock input/output with debugger

Selected when in Serial Wire mode (see JTMS description, Pin 35)

JTCK

JTAG clock input from debugger

Selected when in JTAG mode (default mode, see JTMS description,

Pin 35)

Internal pull-down is enabled

PC2

I/O

Digital I/O

Enable with GPIO_DBGCFG[5]

JTDO

JTAG data out to debugger

Selected when in JTAG mode (default mode, see JTMS description,

Pin 35)

SWO

Serial Wire Output asynchronous trace output to debugger

Select asynchronous trace interface in ARM core

Enable trace interface in ARM core

Select alternate output function with GPIO_PCCFGL[11:8]

Enable Serial Wire mode (see JTMS description, Pin 35)

Internal pull-up is enabled

PC3

I/O

Digital I/O

Either Enable with GPIO_DBGCFG[5],

or enable Serial Wire mode (see JTMS description)

JTDI

JTAG data in from debugger

Selected when in JTAG mode (default mode, see JTMS description,

Pin 35)

Internal pull-up is enabled

PC4

I/O

Digital I/O

Enable with GPIO_DBGCFG[5]

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