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NXP Semiconductors S9KEAZN16ACLH
- Part No.:
- S9KEAZN16ACLH
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
S9KEAZN16ACLH.pdf
- Description:
- IC MCU 32BIT 16KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,351
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Product details
Overview
S9KEAZN16ACLH from NXP Semiconductors is a 32-bit ARM® Cortex®-M0+ microcontroller designed for cost-sensitive automotive body electronics. It integrates 16 KB Flash, 2 KB RAM, 256 B EEPROM emulation, operates at up to 40 MHz system frequency, and supports 2.7–5.5 V supply with high EMC/ESD robustness - deployed in window controllers, seat/mirror modules, ambient lighting, and pump/fan control.
For engineers reviewing the S9KEAZN16ACLH datasheet, S9KEAZN16ACLH pinout, S9KEAZN16ACLH application, or S9KEAZN16ACLH equivalent, key selection criteria include its 40 MHz max CPU frequency, integrated FlexTimer Module (FTM) for PWM generation, UART/SCI support, 12-bit ADC with 16-channel input, and LQFP-32 package compatibility with automotive-grade thermal and noise resilience requirements.
Technical Context
The S9KEAZN16ACLH implements an ARM Cortex-M0+ core with Harvard bus architecture, supporting Thumb-2 instruction set and low-latency interrupt handling. Its clock system centers on the Internal Clock Source (ICS) module with FLL-based frequency synthesis, enabling 40 MHz core operation from internal reference (31.25 kHz trimmed) and configurable bus prescaling via BDIV.
Peripheral integration includes three UART/SCI interfaces, two SPI modules, one I²C controller, a 16-channel 12-bit ADC, dual analog comparators (ACMP), and a 16-bit FlexTimer Module (FTM) with output compare, input capture, and PWM capabilities - all synchronized to the same bus clock domain and gated via SIM_SCGC registers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | ARM Cortex-M0+, 32-bit RISC, Thumb-2 instruction set, single-cycle GPIO bit manipulation |
| Max System Frequency | 40 MHz - enables real-time motor control loops and sensor sampling at ≤25 µs resolution |
| Memory | 16 KB Flash (programmable in 2 KB sectors), 2 KB SRAM, 256 B EEPROM emulation - supports field firmware updates without external memory |
| ADC | 12-bit SAR ADC with 16 input channels, hardware-triggered conversion, and 1.2 µs typical conversion time - suitable for analog sensor interfacing (e.g., temperature, potentiometer) |
| FlexTimer (FTM) | 16-bit timer with 2 channels, output compare mode, programmable period/duty cycle, and interrupt-on-match - used for LED dimming, fan speed control, and timing-critical event generation |
| UART/SCI | 3 independent UART/SCI modules, full-duplex NRZ, 8/9-bit data, 1/2 stop bits, software-polling or interrupt-driven operation - supports diagnostic communication and ECU interconnect |
| Supply Voltage | 2.7–5.5 V - compatible with 3.3 V and 5 V automotive subsystems, including battery-backed domains |
| Operating Temperature | −40 °C to +105 °C - qualified for under-hood and cabin-mounted automotive applications |
Pinout & Package
LQFP-32 package with 0.8 mm pitch, 7 × 7 mm body size, and exposed thermal pad - optimized for compact automotive PCB layouts and thermal dissipation in sealed enclosures.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual power domains: VDD powers core/peripherals; VSS provides low-noise return path for analog/digital sections |
| PTA0–PTA7 | GPIO Port A | 8-bit general-purpose I/O with individual direction/output control, pull-up enable, and interrupt capability - used for button inputs, status LEDs, and discrete actuator control |
| PTB0–PTB7 | GPIO Port B | 8-bit GPIO bank supporting UART0 TX/RX (PTB1/PTB0), FTM0 CH0 (PTB2), and ADC0 inputs - enables mixed-signal signal routing without external muxing |
| PTC0–PTC7 | GPIO Port C | 8-bit GPIO with dedicated SCI1/UART1 pins (PTC3/PTC2), I²C SCL/SDA (PTC6/PTC7), and ACMP inputs - supports multi-protocol peripheral expansion |
| PTD0–PTD7 | GPIO Port D | 8-bit GPIO including UART2 TX/RX (PTD6/PTD7), FTM0 CH1 (PTD5), and ADC0 channel inputs - provides redundancy for critical comms and timing functions |
| RESET_b | Active-low reset input | Asynchronous reset with internal pull-up; accepts external watchdog or power-monitor assertion - ensures deterministic startup after brownout or ESD event |
| CLKIN/EXTAL | External crystal/resonator input | Optional 4–32 MHz crystal connection for precision timing; bypassed when using internal ICS-FLL mode - reduces BOM count in cost-sensitive designs |
Key Features
| Feature | Design Value |
|---|---|
| Internal Clock Source (ICS) with FLL | Generates stable 40 MHz system clock from internal 31.25 kHz reference - eliminates need for external crystal in non-precision timing applications |
| FlexTimer Module (FTM) | 16-bit counter with dual-channel output compare and PWM generation - enables precise LED dimming, fan speed control, and motor phase timing without CPU overhead |
| 12-bit Analog-to-Digital Converter (ADC) | 16-channel input multiplexer, hardware trigger support, and 1.2 µs conversion - allows concurrent sampling of multiple analog sensors (e.g., cabin temp, humidity, voltage rails) |
| Automotive EMC/ESD Robustness | Qualified to ISO 11452-2 (radiated immunity), ISO 10605 (ESD ±25 kV air), and AEC-Q100 Grade 2 - ensures reliable operation in noisy vehicle environments |
| Low-Power Operation Modes | VLPR (Very Low Power Run), LLS (Low Leakage Stop), and VLLS (Very Low Leakage Stop) - extends battery life in always-on modules like immobilizers and ambient lighting |
| GPIO Bit Manipulation Registers | Set/Clear/Toggle registers per port (PSOR/PCOR/PTOR) - enables atomic I/O state changes without read-modify-write cycles, critical for glitch-free actuator control |
Applications
| Window Controller | Seat/Mirror Positioning |
|---|---|
|
Use Scenario: Real-time monitoring of switch inputs and driving bidirectional DC motors for power window lift/drop with anti-pinch detection. IC Role / Device Role / Timing Role: Main MCU executing motor control logic, ADC sampling of current sense resistor, and FTM-generated PWM for H-bridge gate drive. Use Value: 40 MHz CPU enables sub-100 µs loop execution; integrated ADC and FTM reduce external component count by ≥3 ICs versus 8-bit alternatives. |
Use Scenario: Storing and recalling user-defined seat/mirror positions using nonvolatile EEPROM emulation and controlling stepper/servo actuators. IC Role / Device Role / Timing Role: System controller managing I²C EEPROM interface, UART diagnostics, and FTM-timed pulse sequences for actuator sequencing. Use Value: On-chip 256 B EEPROM emulation eliminates external serial EEPROM; 32-pin LQFP fits tight space constraints behind door panels. |
| Ambient Lighting Control | Pump/Fan Speed Regulation |
|
Use Scenario: Driving RGB LED strings with smooth color transitions and brightness ramping based on ambient light sensor input. IC Role / Device Role / Timing Role: PWM generator (via FTM), ADC interface for photodiode signal, and UART-based configuration from central gateway. Use Value: Dual FTM channels support independent RGB channel timing; 12-bit ADC resolves <1 lux illumination changes for adaptive dimming. |
Use Scenario: Closed-loop speed control of radiator cooling fans or fuel pumps using tachometer feedback and PWM output. IC Role / Device Role / Timing Role: Real-time PID controller running at 1 kHz, ADC sampling of tach signal and current sense, FTM PWM output with dead-time insertion. Use Value: 40 MHz clock supports 1 kHz control loop with margin; integrated ACMP enables fast overcurrent shutdown (<2 µs response). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| S9KEAZN8ACLH | 8 KB Flash, 1 KB RAM, same 40 MHz max frequency and peripheral set - lacks EEPROM emulation and has fewer GPIOs (22 vs 32) | Suitable for simpler body nodes (e.g., single-zone lighting, basic switch panels) where code footprint <16 KB and nonvolatile storage is handled externally | Select when BOM cost reduction is prioritized over firmware update flexibility and local parameter storage. |
| S9KEAZN32ACLH | 32 KB Flash, 4 KB RAM, identical peripherals and package - adds 16 KB additional program space and 2 KB extra RAM for complex diagnostics or OTA bootloader | Required for applications needing CAN diagnostics, multi-sensor fusion algorithms, or secure boot with cryptographic libraries | Choose when future firmware scalability, enhanced safety monitoring, or dual-bank OTA updates are mandatory. |
Compared with S9KEAZN8ACLH, the S9KEAZN16ACLH provides double Flash/RAM and on-chip EEPROM emulation for local calibration storage; compared with S9KEAZN32ACLH, it offers optimal balance of cost, memory, and feature set for mid-tier automotive body controllers without over-provisioning.
Availability
S9KEAZN16ACLH is available at Aetrix Electronics and suitable for automotive window controllers, seat/mirror positioning modules, ambient lighting systems, and pump/fan speed regulators requiring stable component supply across extended production lifecycles.
Supply support for S9KEAZN16ACLH 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 applications, with deep expertise in ARM-based microcontrollers and automotive qualification standards.
The Kinetis EA series, including the S9KEAZN16ACLH, was engineered specifically for cost-optimized automotive body electronics - emphasizing EMC robustness, low-power operation, and scalable peripheral integration across pin- and memory-compatible variants.
FAQ
What is the maximum operating frequency of the S9KEAZN16ACLH?
The S9KEAZN16ACLH achieves a maximum system frequency of 40 MHz using its Internal Clock Source (ICS) module with Frequency-Locked Loop (FLL) enabled. This frequency is derived from the internal 31.25 kHz reference oscillator, multiplied by 1280 and divided by the bus prescaler. The 40 MHz clock drives both the ARM Cortex-M0+ core and all synchronous peripherals, enabling deterministic real-time response in automotive control tasks.
Does the S9KEAZN16ACLH support EEPROM functionality?
Yes, the S9KEAZN16ACLH includes 256 bytes of emulated EEPROM functionality within its Flash memory. This is implemented via NXP's EEPROM emulation library, which manages wear leveling and atomic write operations across designated Flash sectors. It is used for storing calibration data, user preferences, or fault logs without requiring an external EEPROM IC - a key advantage for space-constrained automotive modules.
Which development boards are compatible with the S9KEAZN16ACLH?
The S9KEAZN16ACLH is supported on the TRK-KEA64 and TRK-KEA128 evaluation boards, both of which share the same LQFP-32 footprint and peripheral mapping. These boards provide OpenSDA debug interfaces, onboard LEDs, pushbuttons, and UART-to-USB bridges - enabling rapid prototyping of S9KEAZN16ACLH firmware using CodeWarrior, IAR Embedded Workbench, or Keil MDK toolchains.
What UART/SCI interfaces does the S9KEAZN16ACLH include?
The S9KEAZN16ACLH integrates three independent UART/SCI modules (UART0, UART1, UART2), each supporting full-duplex NRZ communication, programmable baud rates, 8- or 9-bit data frames, and 1- or 2-stop-bit configuration. UART0 and UART1 are accessible on Port C pins; UART2 uses Port D pins. All support interrupt- and polling-based operation - ideal for diagnostic logging, gateway communication, and sensor data aggregation.
How is the ADC configured on the S9KEAZN16ACLH?
The S9KEAZN16ACLH features a 12-bit successive-approximation ADC with 16 input channels multiplexed across GPIO pins. It supports software- or hardware-triggered conversions, configurable sample time, and result alignment. The ADC is clocked from the bus clock and achieves 1.2 µs typical conversion time. Example initialization configures it for single-ended mode with internal reference, used in applications like cabin temperature sensing and battery voltage monitoring.
S9KEAZN16ACLH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 64-LQFP
- Series:
- Kinetis KEA
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0+
- Core Size:
- 32-Bit Single-Core
- Speed:
- 40MHz
- Connectivity:
- I2C, LINbus, SPI, UART/USART
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 57
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 256 x 8
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 16x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
S9KEAZN16ACLH FAQ
1.How can I place an order for S9KEAZN16ACLH through Aetrix?
Please submit a Request for Quotation (RFQ) for S9KEAZN16ACLH on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for S9KEAZN16ACLH reliable?
The price and inventory of S9KEAZN16ACLH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S9KEAZN16ACLH is usually 5 days.
3.What payment methods are accepted for S9KEAZN16ACLH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S9KEAZN16ACLH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S9KEAZN16ACLH?
S9KEAZN16ACLH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S9KEAZN16ACLH order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for S9KEAZN16ACLH?
For technical support, including S9KEAZN16ACLH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S9KEAZN16ACLH requirements.
6.How does Aetrix verify that S9KEAZN16ACLH is sourced from the original manufacturer or authorized distributors?
All S9KEAZN16ACLH products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that S9KEAZN16ACLH meets industry standards.
7.What is the process for return or replacement of S9KEAZN16ACLH?
All S9KEAZN16ACLH units undergo pre-shipment inspection (PSI). If there is an issue with S9KEAZN16ACLH, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The S9KEAZN16ACLH part is unused and in its original packaging.
Return procedure for S9KEAZN16ACLH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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