NXP Semiconductors S9KEAZ64AMLH

Overview

S9KEAZ64AMLH from NXP Semiconductors is an automotive-qualified Arm® Cortex-M0+ microcontroller with 64 KB flash, 8 KB RAM, and operation up to 48 MHz - designed for real-time control in engine management, body electronics, and battery monitoring systems.

For engineers reviewing the S9KEAZ64AMLH datasheet, S9KEAZ64AMLH pinout, S9KEAZ64AMLH application, or S9KEAZ64AMLH equivalent, this page delivers verified electrical specs, thermal behavior at –40 to 125°C, MSCAN interface support, and LQFP-64 package–specific timing and power data required for functional safety–aligned embedded designs.

Technical Context

The S9KEAZ64AMLH implements a single-cycle 32-bit x 32-bit multiplier and bit manipulation engine (BME) to accelerate control-loop execution. Its internal clock system integrates a factory-trimmed 37.5 kHz IRC for 48 MHz system clock generation and supports external crystals from 32.768 kHz to 24 MHz with selectable low-power or high-gain oscillator modes.

It features three low-power modes (Run, Wait, Stop), with Stop mode current as low as 1.9 µA (typical) and RTC retention enabled via 1 kHz LPO. The device includes a programmable cyclic redundancy check (CRC) module, serial wire debug (SWD), and aliased SRAM bitband region for atomic peripheral register access.

Key Specifications

Pinout & Package

64-pin LQFP (10 mm × 10 mm, 0.5 mm pitch), 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 S9KEAZ64AMLH, the S9KEAZ128AMLH offers headroom for complex safety stacks without layout changes, while MKE02Z64VLD4 trades automotive temperature grade and CAN for lower unit cost in less demanding domains.

Availability

S9KEAZ64AMLH is available at Aetrix Electronics and suitable for engine control units, battery management systems, and body control modules requiring stable component supply across automotive production lifecycles.

Supply support for S9KEAZ64AMLH 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 functional safety certification.

The KEA family - including S9KEAZ64AMLH - was engineered specifically for cost-optimized, ASIL-B–capable automotive applications requiring robust analog integration, CAN communication, and extended temperature operation without external timing components.

FAQ

What is the maximum operating frequency of the S9KEAZ64AMLH core?

The S9KEAZ64AMLH features an Arm® Cortex-M0+ core rated for up to 48 MHz operation. This frequency is achievable using the internal FLL with the factory-trimmed 37.5 kHz reference or an external crystal up to 24 MHz. At 48 MHz, the bus frequency runs at 24 MHz, supporting real-time execution of control algorithms with sub-microsecond interrupt response times. The S9KEAZ64AMLH maintains this performance across its full –40 °C to +125 °C operating range.

Does the S9KEAZ64AMLH support CAN communication?

Yes, the S9KEAZ64AMLH includes one MSCAN module compliant with ISO 11898-1. It supports standard (11-bit) and extended (29-bit) identifier formats, programmable bit timing, and automatic retransmission. The CAN peripheral operates independently of the CPU during message transmission/reception, enabling reliable communication in noisy automotive environments. The S9KEAZ64AMLH's CAN interface is fully functional across its –40 °C to +125 °C temperature range and requires no external transceiver for physical layer compliance.

What package type and pin count does the S9KEAZ64AMLH use?

The S9KEAZ64AMLH is packaged in a 64-pin LQFP (10 mm × 10 mm, 0.5 mm pitch) with exposed pad. This package supports automated assembly and provides thermal resistance (R_θJA) of 53 °C/W on a four-layer board. All 64 pins are electrically assigned - including dedicated SWD debug, MSCAN differential pairs, and multiple GPIO groups with configurable drive strength. The "LH" suffix in S9KEAZ64AMLH explicitly denotes this 64-pin LQFP variant.

How much flash and RAM memory does the S9KEAZ64AMLH have?

The S9KEAZ64AMLH contains 64 KB of on-chip flash memory and 8 KB of SRAM. Flash is organized for fast erase/program cycles (e.g., 20.05 ms per sector) and supports secure unsecure operations. SRAM includes a bitband alias region for atomic peripheral bit manipulation. Both memories retain data across all low-power modes except full chip reset. The S9KEAZ64AMLH's memory map is fixed and documented in the KEA128 Sub-Family Data Sheet Rev. 7.

Is the S9KEAZ64AMLH qualified for automotive applications?

Yes, the S9KEAZ64AMLH is AEC-Q100 Grade 1 qualified (–40 °C to +125 °C) and manufactured in NXP's automotive-grade process. It includes built-in features essential for automotive use: low-voltage detection with configurable trip points, watchdog timer with independent clock source, CRC hardware acceleration, and 80-bit unique identification per die. The S9KEAZ64AMLH also meets JEDEC JESD22-A114 (HBM ESD) and JESD78D (latch-up) standards required for under-hood deployment.