NXP Semiconductors S9KEAZ64ACLHR

Overview

S9KEAZ64ACLHR from NXP Semiconductors is an automotive-qualified Arm® Cortex-M0+ microcontroller with 64 KB flash, 8 KB RAM, and operation up to 48 MHz. It integrates MSCAN, dual I²C, triple UART, dual SPI, 12-bit ADC, two analog comparators with 6-bit DACs, and six FTM timer channels - designed for real-time control in engine management, body electronics, and powertrain subsystems.

For engineers reviewing the S9KEAZ64ACLHR datasheet, S9KEAZ64ACLHR pinout, S9KEAZ64ACLHR application, or S9KEAZ64ACLHR equivalent, this page delivers verified specifications, package mapping (64-pin LQFP), thermal performance at –40°C to 125°C, CAN interface timing, and validated alternative parts for automotive ECU design.

Technical Context

The S9KEAZ64ACLHR implements a single-cycle 32-bit x 32-bit multiplier and bit manipulation engine (BME) for deterministic real-time math and register-level bit-field operations. Its internal clock system combines a factory-trimmed 37.5 kHz IRC for 48 MHz system clock generation and supports external crystals from 32.768 kHz to 24 MHz via configurable low-power/high-gain oscillator modes.

Power management includes three operational modes (Run/Wait/Stop), with Stop-mode current as low as 1.9 µA (typical) plus adders for ADC (82 µA), ACMP (12 µA), and LVD (125 µA). The device uses a dedicated 1 kHz low-power oscillator (LPO) for RTC and wake-up timing independent of main clock domains.

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 S9KEAZ64ACLHR, the S9KEAZ128ACLHR offers double flash/RAM for complex safety firmware, while the MKE02Z64VLD4 reduces feature count and cost but sacrifices CAN, ADC resolution, and peripheral concurrency - making it suitable only for simplified control tasks.

Availability

S9KEAZ64ACLHR is available at Aetrix Electronics and suitable for automotive engine control, body electronics, and electric power steering systems requiring stable component supply across extended product lifecycles.

Supply support for S9KEAZ64ACLHR 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 series targets cost-optimized, AEC-Q100 qualified microcontrollers for automotive body, powertrain, and chassis applications - emphasizing robustness, CAN integration, and low-power operation in harsh environments.

FAQ

What is the maximum operating frequency of the S9KEAZ64ACLHR core?

The S9KEAZ64ACLHR features an Arm® Cortex-M0+ core rated for up to 48 MHz operation. This frequency is achieved using the internal FLL with either the factory-trimmed 37.5 kHz IRC or an external crystal/resonator. At 48 MHz, the device delivers 48 million instructions per second with single-cycle I/O access and deterministic interrupt response - critical for time-sensitive automotive control loops. The S9KEAZ64ACLHR maintains this speed across its full –40°C to +125°C operating range.

Does the S9KEAZ64ACLHR include a CAN controller, and what standards does it support?

Yes, the S9KEAZ64ACLHR integrates an MSCAN module compliant with ISO 11898-1 (Classical CAN). It supports data rates up to 1 Mbit/s, message filtering, and hardware acceptance masking. The module operates independently of the CPU during message reception, freeing core resources for application tasks. The S9KEAZ64ACLHR requires an external CAN transceiver for physical layer interfacing, as the MSCAN block provides only the protocol controller - not the differential driver/receiver circuitry.

What is the flash memory endurance and retention specification for the S9KEAZ64ACLHR?

The S9KEAZ64ACLHR specifies 100,000 program/erase cycles for its 64 KB flash memory, with data retention guaranteed for 20 years at 85°C or 40 years at 55°C. Flash programming requires 2.7–5.5 V supply voltage and supports 2-word (0.13 ms typical) and 4-word (0.21 ms typical) write operations. Erase operations include sector (20.05 ms typical) and full-block (100.18 ms typical) modes. These values are measured per JEDEC JESD22-A117 and validated across the full automotive temperature range.

How many GPIO pins does the S9KEAZ64ACLHR provide, and which support high-drive capability?

The S9KEAZ64ACLHR provides 71 general-purpose I/O pins across eight ports (PTA–PTH). Of these, eight pins - PTB4, PTB5, PTD0, PTD1, PTE0, PTE1, PTH0, and PTH1 - support high-drive strength (up to ±10 mA at 3 V, ±20 mA at 5 V), enabling direct driving of LEDs, relays, or small solenoids without external buffers. All GPIOs feature programmable pull-up resistors (30–60 kΩ), digital filtering, and interrupt capability - essential for robust switch debouncing and fault-tolerant sensing in automotive environments.

What debug interface does the S9KEAZ64ACLHR use, and what are its key electrical limits?

The S9KEAZ64ACLHR uses a 2-pin Serial Wire Debug (SWD) interface compliant with ARM CoreSight standards. SWD_CLK operates up to 24 MHz, with input setup/hold times of 10 ns and 3 ns respectively, and rise/fall times limited to 3 ns. SWD_DIO supports bidirectional data transfer with 35 ns data valid delay after clock rise. The interface functions across the full 2.7–5.5 V supply range and remains active in all debug-enabled power modes - allowing full visibility into Run, Wait, and Stop states during development and field diagnostics of the S9KEAZ64ACLHR.