NXP Semiconductors S9KEAZN32AMLCR

Overview

S9KEAZN32AMLCR from NXP Semiconductors is an automotive-qualified Arm® Cortex-M0+ microcontroller with 32 KB flash, 4 KB RAM, and 256 B EEPROM, operating from 2.7–5.5 V across –40 to 125°C. It delivers up to 40 MHz core clock and 20 MHz bus clock, integrates dual 12-bit SAR ADCs, two analog comparators with 6-bit DACs, and six communication interfaces (2×SPI, 3×UART, 1×I²C), targeting motor control and body electronics in harsh environments.

For engineers reviewing the S9KEAZN32AMLCR datasheet, S9KEAZN32AMLCR pinout, S9KEAZN32AMLCR application, or S9KEAZN32AMLCR equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification, 32-pin LQFP package with 28 GPIOs, low-power Stop mode current of 41 µA (32-pin), and integrated FlexTimer/PWM modules for real-time actuator control.

Technical Context

The S9KEAZN32AMLCR implements a single-cycle 32-bit x 32-bit multiplier and single-cycle I/O port access to support deterministic real-time response in safety-critical automotive subsystems. Its internal clock system combines a 31.25 kHz factory-trimmed IRC for 40 MHz system clock generation and configurable oscillator options (32.768 kHz crystal or 4–20 MHz resonator) with selectable low-power/high-gain modes.

Power management includes three operational modes-Run, Wait, and Stop-with Stop mode retaining RTC, ADC, ACMP, and LVD functionality while drawing only 41 µA (32-pin package). The device features programmable cyclic redundancy check (CRC), bit manipulation engine (BME), and serial wire debug (SWD) interface compliant with 0–20 MHz SWD_CLK frequency and ≤3 ns rise/fall times.

Key Specifications

Pinout & Package

Package: 32-pin LQFP (7 mm × 7 mm), RoHS-compliant, moisture sensitivity level 3 (MSL3).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with S9KEAZN64AMLH, the S9KEAZN32AMLCR offers identical peripheral sets and temperature rating in a smaller 32-pin footprint, ideal for space-constrained designs; versus MKE02Z32VLC2, it adds AEC-Q100 Grade 1 compliance and integrated analog comparators with DACs for enhanced sensor interface capability.

Availability

S9KEAZN32AMLCR is available at Aetrix Electronics and suitable for automotive body electronics, smart lighting control, and engine cooling systems requiring stable component supply, long-term lifecycle support, and AEC-Q100 qualified assurance.

Supply support for S9KEAZN32AMLCR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and IoT markets, with deep expertise in ARM-based microcontrollers and automotive-grade reliability.

The S9KEAZN32AMLCR belongs to the Kinetis KEA family - a line of cost-optimized, AEC-Q100 qualified MCUs designed specifically for entry-level automotive applications including motor control, lighting, and body electronics.

FAQ

What is the maximum operating frequency of the S9KEAZN32AMLCR core and bus clocks?

The S9KEAZN32AMLCR features an Arm® Cortex-M0+ core with a maximum frequency of 40 MHz and a bus clock running up to 20 MHz. These frequencies are achievable across the full –40 to 125°C temperature range and 2.7–5.5 V supply voltage, enabling deterministic real-time performance in automotive control loops. The S9KEAZN32AMLCR uses internal FLL circuitry locked to either internal or external reference clocks to maintain stability under varying conditions.

Does the S9KEAZN32AMLCR support low-power operation with analog peripherals active?

Yes, the S9KEAZN32AMLCR supports analog peripheral operation in Stop mode, including its 12-bit SAR ADC and analog comparators (ACMP). In Stop mode with ADLPC=1 and ADLSMP=1, ADC conversion can be triggered by hardware events while drawing only 41 µA (32-pin package) at 3 V. This allows continuous battery monitoring or thermal sensing without waking the core, making the S9KEAZN32AMLCR ideal for always-on automotive subsystems.

What package type and pin count does the S9KEAZN32AMLCR use?

The S9KEAZN32AMLCR uses a 32-pin LQFP package measuring 7 mm × 7 mm, with exposed pad option not specified. This compact footprint provides 28 general-purpose I/O pins plus dedicated power, reset, oscillator, and debug signals. The "LC" suffix in the part number explicitly denotes the 32-pin LQFP variant, distinguishing it from the 64-pin "LH" versions in the same KEAZN subfamily.

Is the S9KEAZN32AMLCR AEC-Q100 qualified, and what grade does it meet?

Yes, the S9KEAZN32AMLCR is AEC-Q100 qualified to Grade 1, meaning it is certified for operation from –40 to 125°C ambient temperature - suitable for under-hood and chassis-mounted automotive applications. The "S" prefix in the part number indicates automotive qualification, and the "M" in position T confirms the 125°C maximum operating temperature, satisfying stringent reliability and stress-test requirements for automotive ECUs.

What debug interface does the S9KEAZN32AMLCR provide, and what are its electrical limits?

The S9KEAZN32AMLCR provides a Serial Wire Debug (SWD) interface using SWD_DIO and SWD_CLK pins. It supports clock frequencies up to 20 MHz, with rise/fall times ≤3 ns and data setup/hold times of 10 ns and 3 ns respectively. The interface operates across the full 2.7–5.5 V supply range, enabling robust in-circuit debugging and programming even in electrically noisy automotive environments. This SWD implementation is fully supported by standard ARM toolchains for the S9KEAZN32AMLCR.