NXP Semiconductors S9KEAZN16AMLCR

Overview

S9KEAZN16AMLCR from NXP Semiconductors is an automotive-qualified Arm® Cortex-M0+ microcontroller with 16 KB flash, 4 KB RAM, and 256 B EEPROM, operating at up to 40 MHz core clock and -40 to 125°C ambient temperature. It integrates dual 12-bit SAR ADCs, two analog comparators with 6-bit DACs, three UARTs, two SPIs, one I²C, six-channel FTM, RTC, and SWD debug - deployed in engine control modules, body electronics, and industrial sensor nodes.

For engineers reviewing the S9KEAZN16AMLCR datasheet, S9KEAZN16AMLCR pinout, S9KEAZN16AMLCR application, or S9KEAZN16AMLCR equivalent, key selection criteria include its 32-pin LQFP package, 2.7–5.5 V supply range, stop-mode current as low as 82 µA (64-pin) / 41 µA (32-pin), and automotive-grade thermal reliability up to 125°C ambient.

Technical Context

The S9KEAZN16AMLCR implements a single-cycle 32-bit x 32-bit multiplier and single-cycle I/O port access for deterministic real-time control. Its internal clock system combines a 31.25 kHz factory-trimmed reference oscillator, FLL-based frequency synthesis, and support for external 32.768 kHz crystals or 4–20 MHz resonators - enabling precise timing across run, wait, and stop power modes.

System-level integration includes a programmable cyclic redundancy check (CRC) module, bit manipulation engine (BME), low-voltage detection (LVD) with four selectable warning thresholds, and independent watchdog (WDOG) with dedicated clock source - all designed for functional safety compliance in ASIL-B–capable automotive subsystems.

Key Specifications

Pinout & Package

32-pin LQFP (7 mm × 7 mm), RoHS-compliant, moisture sensitivity level 3, lead-free reflow profile compatible (peak 260°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with S9KEAZN16AMLCR, S9KEAZN32AMLH offers expanded memory and I/O at the cost of board space and layout change, while MKE02Z32VLC2 provides pin-compatible flash scalability without EEPROM or analog comparator DACs - making S9KEAZN16AMLCR optimal for balanced mixed-signal automotive edge nodes requiring nonvolatile configuration storage.

Availability

S9KEAZN16AMLCR is available at Aetrix Electronics and suitable for automotive engine management, industrial sensor nodes, and medical infusion pump designs requiring stable component supply, long-term lifecycle support, and AEC-Q100–aligned qualification.

Supply support for S9KEAZN16AMLCR 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 S9KEAZN16AMLCR belongs to NXP's Kinetis KEA family - engineered specifically for cost-sensitive, thermally demanding automotive body electronics and powertrain auxiliary control applications requiring robust operation from -40°C to 125°C.

FAQ

What is the maximum operating frequency of the S9KEAZN16AMLCR core?

The S9KEAZN16AMLCR features an Arm® Cortex-M0+ core rated for up to 40 MHz operation, with bus clock support up to 20 MHz. This frequency is achievable across the full -40°C to 125°C ambient temperature range when supplied within the 2.7–5.5 V specification. The internal FLL and factory-trimmed 31.25 kHz reference ensure stable clock generation without external crystal dependency for many use cases.

Does the S9KEAZN16AMLCR support hardware debugging, and what interface is used?

Yes, the S9KEAZN16AMLCR supports full hardware debugging via Serial Wire Debug (SWD) using two dedicated pins: SWD_DIO and SWD_CLK. It operates at up to 20 MHz, enabling real-time program loading, breakpoint setting, and register inspection. SWD replaces JTAG for reduced pin count and is fully supported by NXP's MCUXpresso IDE and standard ARM-compliant debug probes.

What are the power consumption characteristics of the S9KEAZN16AMLCR in stop mode?

In stop mode with only the 1 kHz LPO clock active, the S9KEAZN16AMLCR draws 41 µA for the 32-pin LQFP variant. Additional current is drawn by enabled peripherals: +41 µA for ADC operation, +12 µA for analog comparators, and +124 µA for LVD monitoring. These values are specified across -40°C to 125°C and enable reliable battery-backed operation in automotive and portable medical applications.

Can the S9KEAZN16AMLCR operate without an external crystal oscillator?

Yes, the S9KEAZN16AMLCR can operate without an external crystal thanks to its internal 31.25 kHz factory-trimmed reference oscillator and FLL-based clock synthesis. This allows full functionality - including 40 MHz core operation - using only the internal clock source. External crystals (32.768 kHz or 4–20 MHz) are optional and used when higher precision or lower jitter is required for specific timing-critical peripherals.

What is the purpose of the Bit Manipulation Engine (BME) in the S9KEAZN16AMLCR?

The Bit Manipulation Engine (BME) in the S9KEAZN16AMLCR provides single-cycle atomic bit set, clear, toggle, and test operations on any memory-mapped register. This eliminates read-modify-write sequences vulnerable to race conditions during interrupt handling - critical for reliable GPIO control, flag management, and peripheral register updates in real-time automotive and industrial firmware.