NORAB100 datasheet(21/46 Pages) ETC

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NORA-B1 series - Data sheet

UBX-20027119 - R10

Interfaces

Page 21 of 46

C1 – Public

For information about the electrical specifications of the various analog comparator options, see also

Analog comparators. For a summary of the analog pin options, see also Table 5.

Since the run current of the low power comparator is very low, it can be used in the module sleep mode

as an analog trigger to wake up the CPU. See also Power modes.

2.8.4 Analog pin options

Table 5 shows the supported connections of the analog functions.

☞ An analog pin may not be simultaneously connected to multiple functions.

Table 5: Possible uses of the analog pins

2.9 Debug

2.9.1 Multi-drop Serial Wire Debug (SWD)

NORA-B1 series modules provide ARM Multi-drop SWD technology for flashing and debugging. Each

core shares an external connection to one set SWD signals — SWDIO and SWDCLK. The cores are

then addressed individually. Additionally, NORA-B1 can be connected over the same SWD interface

to other CPUs that support Multi-drop SWD.

2.9.2 Parallel trace

The application core within NORA-B1 series modules supports parallel trace output. This facilitates

output from the Embedded Trace Macrocell (ETM) and Instrumentation Trace Macrocell (ITM)

embedded in the Arm Cortex-M33 core integrated in NORA-B1. The ETM trace data allows a user to

record exactly how the application processes the CPU instructions in real time.

The parallel trace interface uses one clock signal and four data signals respectively: TRACE_CLK,

TRACE_D0, TRACE_D1, TRACE_D2 and TRACE_D3. For information about the shared assignments

of the GPIO pins, see the pin assignments Table 6.

Symbol

Analog function

Can be connected to

ADCP

ADC single-ended or differential positive input

Any analog pin or VDD

ADCN

ADC differential negative input

Any analog pin or VDD

VIN+

Comparator input

Any analog pin

VREF

Comparator single-ended mode reference ladder input

Any analog pin, VDD, 1.2 V, 1.8V or 2.4 V

VIN-

Comparator differential mode negative input

Any analog pin

LP_VIN+

Low-power comparator IN+

Any analog pin

LP_VIN-

Low-power comparator IN-

P0.04/AIN0 or P0.05/AIN1, 1/16 to 15/16 VDD

in steps of 1/16 VDD

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