K32L2AX datasheet(14/96 Pages) NXP

14 / 96 page

2.1.7 Security

This device implements security based on the mode selected from the flash module.

The device security provides:

• Security of the flash and MCU via SEC bit

• Backdoor Key and NXP Backdoor key access support

• Disable access to the debugger via the SWD interface-bit unique identification

number, which is programmed in factory and loaded to SIM register after power-on

reset.

2.1.8 Power management

The System Mode Controller (SMC) provides multiple power options to allow the user

to optimize power consumption for the level of functionality needed.

Depending on the stop requirements of the user application, a variety of stop modes are

available that provide state retention, partial power-down or full power-down of certain

logic and/or memory. I/O states are held in all modes of operation. The following table

compares the various power modes available.

For each run mode, there is a corresponding Wait and Stop mode. Wait modes are

similar to Arm Sleep modes. Stop modes (VLPS, STOP) are similar to Arm Sleep Deep

mode. The Very Low Power Run (VLPR) operating mode can drastically reduce

runtime power when the maximum bus frequency is not required to handle the

application needs.

The three primary modes of operation are Run, Wait, and Stop. The WFI instruction

invokes both Wait and Stop modes for the chip. The primary modes are augmented in a

number of ways to provide lower power based on application needs.

Table 5. Chip power modes

Chip mode

Description

Core mode

Normal

recovery

method

RUN (Normal

Run)

• Default mode out of reset

• On-chip voltage regulator is on.

Run

—

HRUN (High

Speed Run)

Allows maximum performance of chip.

• On-chip voltage regulator is on.

High Speed Run

—

WAIT (Normal

Wait) - via WFI

Allows peripherals to function while the core is in Sleep mode,

reducing power.

• NVIC remains sensitive to interrupts

• Peripherals continue to be clocked.

Sleep

Interrupt

Table continues on the next page...

Overview

K32 L2A Microcontroller with 512 KB Flash and 128 KB SRAM, Rev. 3, 02/2021

NXP Semiconductors

K32L2AX датащи(PDF) 14 Page - NXP Semiconductors

K32L2AX датащи(HTML) 14 Page - NXP Semiconductors

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96

датащи скачать

ссылки URL