NXP Semiconductors S9KEAZN8AMTGR

Overview

S9KEAZN8AMTGR from NXP Semiconductors is an automotive-qualified ARM Cortex-M0+ microcontroller with 8 KB flash, 1 KB RAM, and operation up to 48 MHz - designed for real-time control in engine management, body electronics, and industrial sensor nodes requiring -40°C to 125°C ambient operation.

For engineers reviewing the S9KEAZN8AMTGR datasheet, S9KEAZN8AMTGR pinout, S9KEAZN8AMTGR application, or S9KEAZN8AMTGR equivalent, key selection considerations include its 16-pin TSSOP package, integrated 12-bit SAR ADC with Stop-mode operation, dual FlexTimer/PWM modules, low-power RTC, and SWD debug interface supporting production programming and field diagnostics.

Technical Context

The S9KEAZN8AMTGR implements a single-cycle 32-bit x 32-bit multiplier and single-cycle I/O port access to enable deterministic timing in motor control loops and safety-critical polling routines. Its clock system integrates an internal 37.5 kHz factory-trimmed reference for 48 MHz FLL-based system clock generation, plus support for external 32.768 kHz crystals or 4–24 MHz resonators.

Power management includes three operational modes (Run/Wait/Stop), with Stop-mode current as low as 2 µA at 5 V (plus 86 µA with ADC active), enabled by the 1 kHz LPO oscillator and programmable low-voltage detection with four warning thresholds. Peripheral integration includes UART, SPI, I²C, two analog comparators with 6-bit DACs, and a CRC module for firmware integrity verification.

Key Specifications

Pinout & Package

Package: 16-pin TSSOP (4.5 mm × 5 mm), lead-free, RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S9KEAZN8AMTGR, S9KEAZN8AMFKR offers superior I/O density and thermal performance in QFN, while MC9S08AC60CLD provides legacy compatibility at the expense of ARM tooling, debug capability, and automotive qualification rigor.

Availability

S9KEAZN8AMTGR is available at Aetrix Electronics and suitable for automotive ECU development, industrial sensor node production, and motor control module manufacturing requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for S9KEAZN8AMTGR 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.

The KEA8 family - including S9KEAZN8AMTGR - was engineered for cost-sensitive, high-reliability automotive body electronics and industrial control, emphasizing AEC-Q100 compliance, ultra-low-power Stop modes, and robust peripheral integration without external timing components.

FAQ

What is the maximum operating frequency of the S9KEAZN8AMTGR?

The S9KEAZN8AMTGR features an ARM Cortex-M0+ core rated for up to 48 MHz operation. This frequency is achieved using the internal FLL with the factory-trimmed 37.5 kHz reference clock or an external crystal/resonator. Bus clock runs at half-core speed (24 MHz), and all timing-critical peripherals - including FTM, ADC, and UART - are fully specified at this rate. The S9KEAZN8AMTGR maintains timing integrity across its full -40°C to +125°C operating range.

Does the S9KEAZN8AMTGR support debugging during production programming?

Yes, the S9KEAZN8AMTGR includes a dedicated Serial Wire Debug (SWD) interface compliant with ARM CoreSight standards. It supports full in-circuit programming, real-time variable inspection, breakpoint setting, and trace via two pins (SWD_DIO and SWD_CLK). The S9KEAZN8AMTGR SWD interface operates across the full voltage (2.7–5.5 V) and temperature (-40°C to +125°C) range, enabling reliable programming in automated test fixtures and field firmware updates.

What power modes does the S9KEAZN8AMTGR support, and what is the lowest current draw?

The S9KEAZN8AMTGR supports Run, Wait, and Stop power modes. In Stop mode with only the 1 kHz LPO active, typical current consumption is 2 µA at 5 V and 1.9 µA at 3 V (–40°C to +125°C). With ADC enabled in Stop mode (ADLPC=1, ADLSMP=1), current increases to 86 µA at 5 V. These values are measured with all clocks gated except the LPO, making the S9KEAZN8AMTGR suitable for battery-backed applications requiring multi-year standby life.

Can the S9KEAZN8AMTGR operate without an external crystal?

Yes, the S9KEAZN8AMTGR can operate without an external crystal. Its Internal Clock Source (ICS) includes a factory-trimmed 37.5 kHz internal reference oscillator that feeds the FLL to generate a stable 48 MHz system clock. This eliminates the need for external timing components in cost-sensitive or space-constrained designs. The S9KEAZN8AMTGR also supports optional external 32.768 kHz crystals or 4–24 MHz resonators for higher precision or low-power RTC operation.

What is the GPIO configuration capability of the S9KEAZN8AMTGR?

The S9KEAZN8AMTGR provides up to 37 general-purpose I/O pins across its 16-pin TSSOP package, with configurable drive strength (standard or high-current on PTB5, PTC1, PTC5), programmable pull-up resistors (30–50 kΩ), and input hysteresis (6% of VDD). Each GPIO supports multiple peripheral functions including UART, SPI, I²C, ADC inputs, FTM channels, KBI, and IRQ. The S9KEAZN8AMTGR also includes bit-band aliasing and BME for atomic GPIO manipulation - critical for interrupt-safe I/O control in real-time systems.