NXP Semiconductors S9KEAZ64ACLH

Overview

S9KEAZ64ACLH 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 engine control units, body electronics, and battery management systems requiring robust -40°C to 125°C performance.

For engineers reviewing the S9KEAZ64ACLH datasheet, S9KEAZ64ACLH pinout, S9KEAZ64ACLH application, or S9KEAZ64ACLH equivalent, this page delivers verified electrical specs, thermal behavior at 125°C, CAN interface support, LQFP-64 package mapping, and real-world timing constraints for SWD debug, FTM PWM, and MSCAN communication.

Technical Context

The S9KEAZ64ACLH implements a single-cycle 32-bit x 32-bit multiplier and single-cycle I/O port access, enabling deterministic real-time control in safety-critical automotive subsystems. 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.

System-level integration includes Power Management Module (PMC) with Run/Wait/Stop modes, programmable cyclic redundancy check (CRC), serial wire debug (SWD), and bit manipulation engine (BME) for efficient register-level control-optimized for low-latency sensor fusion and actuator drive in constrained embedded environments.

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 S9KEAZ64ACLH, S9KEAZ128ACLH offers double flash capacity without layout changes, while MKE02Z64VLC4 trades CAN and extended temperature for lower unit cost in benign environments-making S9KEAZ64ACLH optimal for CAN-dependent, high-temp automotive nodes.

Availability

S9KEAZ64ACLH 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 S9KEAZ64ACLH 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 over 30 years of automotive MCU heritage.

The KEAZ series targets cost-optimized, functionally safe automotive applications-delivering AEC-Q100 qualified Cortex-M0+ MCUs with integrated CAN, robust analog peripherals, and ultra-low-power modes for next-generation E/E architectures.

FAQ

What is the maximum operating frequency of the S9KEAZ64ACLH?

The S9KEAZ64ACLH operates at up to 48 MHz core frequency with a 24 MHz bus clock. This is achieved using the internal FLL with factory-trimmed 37.5 kHz IRC reference or external crystal input. The device maintains full specification compliance-including ADC accuracy and timer resolution-at this speed across the full −40°C to +125°C temperature range, as validated in the KEA128 Sub-Family Data Sheet Rev. 7.

Does the S9KEAZ64ACLH support CAN communication?

Yes, the S9KEAZ64ACLH includes an MSCAN module compliant with ISO 11898-1, supporting CAN 2.0A/B protocols at data rates up to 1 Mbps. The CAN TX and RX signals are assigned to PTD2 and PTD3, respectively, and require an external CAN transceiver for physical layer interfacing. This capability is explicitly confirmed in Section 2.10 of the KEA128 Sub-Family Data Sheet.

What package type does the S9KEAZ64ACLH use?

The S9KEAZ64ACLH uses a 64-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch), designated by the "LH" suffix in its part number per NXP's part numbering convention. Thermal resistance values (RθJA = 71°C/W on single-layer board) and moisture sensitivity level (MSL3) are documented in Sections 6.3.1 and 5.2 of the KEA128 Sub-Family Data Sheet.

How much flash and RAM memory does the S9KEAZ64ACLH have?

The S9KEAZ64ACLH contains 64 KB of on-chip flash memory and 8 KB of SRAM. These values are derived directly from the "64" in the part number (FFF field = 64 KB) and confirmed in Section 2.3 ("Memories and memory interfaces") of the KEA128 Sub-Family Data Sheet, which lists "Up to 128 KB flash" for the family but specifies S9KEAZ64xxx variants as 64 KB devices.

Is the S9KEAZ64ACLH qualified for automotive applications?

Yes, the S9KEAZ64ACLH is automotive-qualified per AEC-Q100 Grade 1 (−40°C to +125°C), indicated by the "S" prefix (Qualification status = Automotive) and "M" suffix (Temperature range = −40°C to +125°C) in its part number. It meets automotive reliability standards including ESD handling (±6 kV HBM), latch-up immunity (±100 mA), and solder reflow profile compliance (260°C peak, J-STD-020 MSL3).