NXP Semiconductors S9KEAZN64ACLCR

Overview

S9KEAZN64ACLCR from NXP Semiconductors is an automotive-qualified Arm® Cortex-M0+ microcontroller with 64 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 FlexTimer/PWM modules, a 12-bit SAR ADC with Stop-mode operation, two analog comparators with 6-bit DACs, and supports UART, SPI, and I²C for motor control and body electronics applications.

For engineers reviewing the S9KEAZN64ACLCR datasheet, S9KEAZN64ACLCR pinout, S9KEAZN64ACLCR application, or S9KEAZN64ACLCR equivalent, key selection considerations include its 64-pin LQFP package, CAN-free configuration, 2.7–5.5 V supply range, and support for low-power Stop mode with sub-100 µA current consumption including ADC and ACMP wake-up capability.

Technical Context

The S9KEAZN64ACLCR implements a single-cycle 32-bit x 32-bit multiplier and single-cycle I/O port access, enabling deterministic real-time response in safety-critical automotive subsystems. Its internal clock system combines a factory-trimmed 31.25 kHz IRC (±0.8% accuracy at 125°C) with FLL-based scaling to 40 MHz, plus optional external crystal support from 32.768 kHz to 20 MHz.

Power management includes three modes-Run, Wait, and Stop-with programmable low-voltage detection (LVD) thresholds (2.56–4.8 V), independent watchdog (WDOG), and CRC module for firmware integrity. The device uses a Bit Manipulation Engine (BME) to accelerate peripheral register bit-field operations without software overhead.

Key Specifications

Pinout & Package

64-pin LQFP (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad; RoHS-compliant, lead-free finish; moisture sensitivity level (MSL) 3 per J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S9KEAZN64AMLH and MKE02Z64VLC4, the S9KEAZN64ACLCR uniquely combines AEC-Q100 qualification, factory-trimmed high-accuracy internal reference, and verified 125°C operation - making it the only option suitable for production automotive body control units requiring zero-defect reliability and long-term supply continuity.

Availability

S9KEAZN64ACLCR is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor drives, smart lighting controllers, and sensor signal conditioning applications requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for S9KEAZN64ACLCR 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 S9KEAZN64ACLCR belongs to NXP's KEA family of automotive-qualified MCUs, designed specifically for cost-sensitive, safety-aware body electronics and chassis applications where robustness, low power, and AEC-Q100 compliance are mandatory.

FAQ

What is the maximum operating frequency of the S9KEAZN64ACLCR core and bus clocks?

The S9KEAZN64ACLCR features an Arm® Cortex-M0+ core capable of up to 40 MHz operation and a bus clock running at up to 20 MHz. These frequencies are fully supported across the entire -40 to 125°C ambient temperature range and 2.7–5.5 V supply voltage, as validated in the official KEA64 Sub-Family Data Sheet Rev. 8. The S9KEAZN64ACLCR achieves this performance using its internal FLL with factory-trimmed 31.25 kHz reference or external crystal sources.

Does the S9KEAZN64ACLCR include CAN interface capability?

No, the S9KEAZN64ACLCR does not include a CAN controller or transceiver. Its part number encoding confirms this: the 'N' in the third field (S9KEAZN64...) explicitly denotes "CAN not available." The S9KEAZN64ACLCR provides UART, SPI, and I²C interfaces instead, making it suitable for LIN-based body networks or non-CAN sensor hubs where CAN is not required.

What package type and pin count does the S9KEAZN64ACLCR use?

The S9KEAZN64ACLCR uses a 64-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch), designated by the 'LC' suffix in its part number (S9KEAZN64ACLCR). This matches the 'LH' variant in footprint but differs in thermal pad configuration and moisture sensitivity level. The device is supplied in tape-and-reel format ('R' suffix), supporting automated SMT placement in high-volume automotive manufacturing.

How does the S9KEAZN64ACLCR support low-power operation in automotive applications?

The S9KEAZN64ACLCR supports three power modes - Run, Wait, and Stop - with Stop mode consuming as little as 82 µA (64-pin package) while retaining RAM, RTC, and selective peripheral wake-up capability. Its Stop mode allows ADC conversions and analog comparator events to trigger wake-up without CPU intervention, enabling always-on sensor monitoring in battery-powered modules like smart entry systems - a key requirement confirmed in the S9KEAZN64ACLCR's official supply current characterization tables.

Is the S9KEAZN64ACLCR qualified for automotive use, and what standards does it meet?

Yes, the S9KEAZN64ACLCR is automotive-qualified with AEC-Q100 Grade 1 certification (-40 to 125°C), as indicated by the 'S' prefix in its part number (S9KEAZN64...). It meets JEDEC JESD22-A103 for storage life, J-STD-020 for reflow profile compliance (MSL3), and JESD22-A114 for HBM ESD tolerance (±6 kV). These qualifications are documented in the official KEA64 Sub-Family Data Sheet and supported by NXP's automotive product change notification (PCN) process.