
EM358x
Table 6.1. EM358x Pin Descriptions (Continued)
Rev 1.0
47
Pin #
Signal
Direction
Description
36
PB0
I/O Digital
I/O
VREF Analog
O
ADC
reference
output
Enable analog function with GPIO_PBCFGL[3:0]
VREF Analog
I
ADC
reference
input
Enable analog function with GPIO_PBCFGL[3:0]
Enable reference output with an Ember system function
IRQA
I
External interrupt source A
TRACEDATA2
(see also Pin 26)
O
Synchronous CPU trace data bit 2
Select 4-wire synchronous trace interface in ARM core
Enable trace interface in ARM core
Select alternate output function with GPIO_PBCFGL[3:0]
TIM1CLK
I
Timer 1 external clock input
TIM2MSK
I
Timer 2 external clock mask input
37 VDD_PADS Power
Pads
supply
(2.1–3.6
V)
38
PC1
I/O Digital
I/O
ADC3
Analog
ADC Input 3
Enable analog function with GPIO_PCCFGL[7:4]
TRACEDATA3
(see also Pin 27)
O
Synchronous CPU trace data bit 3
Select 1-, 2- or 4-wire synchronous trace interface in ARM core
Enable trace interface in ARM core
Select alternate output function with GPIO_PCCFGL[7:4]
39
VDD_MEM
Power
1.8 V supply (flash, RAM)
40
PC0
I/O
High
current
Digital I/O
Either enable with GPIO_DBGCFG[5],
or enable Serial Wire mode (see JTMS description, Pin 35) and disable
TRACEDATA1
JRST
I
JTAG reset input from debugger
Selected when in JTAG mode (default mode, see JTMS description) and
TRACEDATA1 is disabled
Internal pull-up is enabled
IRQD
1
I
Default external interrupt source D.
TRACEDATA1
O
Synchronous CPU trace data bit 1
Select 2- or 4-wire synchronous trace interface in ARM core
Enable trace interface in ARM core
Select alternate output function with GPIO_PCCFGL[3:0]
Note:
1.
IRQC and IRQD external interrupts can be mapped to any digital I/O pin using the GPIO_IRQCSEL and
GPIO_IRQDSEL registers.