NXP Semiconductors S9S08EL32F1MTJR

Overview

S9S08EL32F1MTJR from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller with 32 KB on-chip FLASH, 2 KB RAM, and 1 KB EEPROM. It features a 40-MHz CPU, 16-channel 10-bit ADC with temperature sensor, dual analog comparators, LIN-capable SLIC, and real-time counter. It targets automotive body electronics and industrial control nodes requiring low-power operation and LIN bus integration.

For engineers reviewing the S9S08EL32F1MTJR datasheet, S9S08EL32F1MTJR pinout, S9S08EL32F1MTJR application, or S9S08EL32F1MTJR equivalent, key selection criteria include its 28-TSSOP package, stop3-mode operation with peripheral wake-up capability, LIN 2.0/SAE J2602 compliance, and background debug interface for in-circuit development.

Technical Context

The S9S08EL32F1MTJR implements the HCS08 CPU core with HC08 instruction set extension including BGND, supporting up to 32 interrupt/reset sources. Its internal clock source (ICS) uses a frequency-locked loop (FLL) with precision-trimmed internal reference (±0.2% resolution, ±2% deviation over voltage/temperature), enabling bus frequencies from 2–20 MHz.

Peripherals include a dedicated Slave LIN Interface Controller (SLIC) supporting full LIN 2.0 and SAE J2602 protocols at up to 120 kbps, with automatic bit-rate synchronization and checksum handling. The ADC operates in stop3 mode with 2.5 μs conversion time and internal bandgap reference, while dual ACMPs support routing to TPM for event-triggered PWM control.

Key Specifications

Pinout & Package

28-TSSOP package with exposed thermal pad (non-electrical). Pinout validated per MC9S08EL32 Rev. 3 datasheet Section 2.1 and mechanical drawing in Appendix B.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit automotive microcontroller applications.

Compared with S9S08EL16F1MTJR, the S9S08EL32F1MTJR provides double FLASH and RAM for larger firmware and data buffers; compared with MC9S08SL16F1MTJR, it delivers dedicated SLIC hardware for deterministic, low-CPU-overhead LIN communication in automotive networks.

Availability

S9S08EL32F1MTJR is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, smart lighting controls, and appliance motor interfaces requiring stable component supply and long-term lifecycle support.

Supply support for S9S08EL32F1MTJR 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 company formed from the spin-off of Philips' semiconductor division, now specializing in secure connectivity solutions for automotive, industrial, and IoT markets.

The S9S08EL32F1MTJR belongs to NXP's legacy HCS08 microcontroller family, designed specifically for cost-sensitive, low-power automotive body electronics where LIN bus integration, EEPROM data retention, and debug reliability are critical.

FAQ

What is the maximum operating frequency of the S9S08EL32F1MTJR CPU core?

The S9S08EL32F1MTJR features an HCS08 CPU core rated for up to 40 MHz operation. Its internal clock source (ICS) supports bus frequencies from 2–20 MHz using the FLL, and the core executes instructions at the bus clock rate. External crystal or resonator options allow system clock derivation up to 40 MHz via PLL-like configurations described in the ICS functional description of the datasheet.

Does the S9S08EL32F1MTJR support LIN communication in hardware?

Yes, the S9S08EL32F1MTJR integrates a dedicated Slave LIN Interface Controller (SLIC) that fully complies with LIN 2.0 and SAE J2602 standards. This hardware module handles bit-rate synchronization, checksum generation and verification, frame buffering, and automatic break detection-offloading these tasks from the CPU and ensuring deterministic timing for automotive network communication.

What power-saving modes are available on the S9S08EL32F1MTJR?

The S9S08EL32F1MTJR offers multiple low-power modes: Run, Wait, Stop2, and Stop3. Stop3 is the deepest mode, where the CPU and most peripherals halt while the RTC and SLIC remain active for wake-up events. Two very low-power stop modes (Stop2 and Stop3) and a reduced-power Wait mode are supported, with typical stop3 current below 10 µA at 25°C and 5 V.

Can the S9S08EL32F1MTJR perform ADC conversions while in low-power mode?

Yes, the S9S08EL32F1MTJR ADC operates in Stop3 mode. With its 2.5 μs conversion time and internal bandgap reference, it can acquire sensor data-including from the integrated temperature sensor-without waking the CPU. This enables ultra-low-power periodic sensing in battery-operated applications such as industrial monitors or automotive occupancy detection.

Is the S9S08EL32F1MTJR pin-compatible with other MC9S08EL-series devices?

Yes, the S9S08EL32F1MTJR in 28-TSSOP is pin-compatible with the S9S08EL16F1MTJR (same package), sharing identical pin assignments, peripheral mappings, and electrical characteristics. This allows direct replacement for memory-scaling upgrades without PCB revision. However, it is not pin-compatible with the 20-TSSOP MC9S08SL16F1MTJR due to differing pin count and function allocation.