NXP Semiconductors S9S08RN8W2MLC

Overview

S9S08RN8W2MLC from NXP Semiconductors (formerly Freescale) is an 8-bit S08 microcontroller with 8 KB flash, 256-byte EEPROM with ECC, and 2 KB RAM, operating at up to 20 MHz bus frequency across –40 °C to 125 °C. It integrates ADC (10-channel, 10-bit), dual SCI/UART, I²C, SPI, two FTM timer modules, TSI touch sensing, and low-power stop3 mode consuming 4.5 µA - deployed in automotive body control modules and industrial sensor nodes.

For engineers reviewing the S9S08RN8W2MLC datasheet, S9S08RN8W2MLC pinout, S9S08RN8W2MLC application, or S9S08RN8W2MLC equivalent, this page delivers verified technical context, validated package mapping (32-pin LQFP), confirmed peripheral timing specs, and real-world design constraints including LVD trip points, FLL accuracy over temperature, and stop3 current adders for ADC/TSI/LVD.

Technical Context

The S9S08RN8W2MLC implements an S08 CPU core with four-level nested interrupt support and up to 40 interrupt/reset sources. Its clock system combines a Pierce external oscillator (XOSC) and an internal clock source (ICS) with frequency-locked-loop (FLL), delivering trimmed DCO output from 16–20 MHz with ±2.0% deviation across –40 °C to 125 °C.

System protection includes independent watchdog clock, selectable low-voltage detect (LVD) thresholds (e.g., VLVDH = 4.2–4.4 V, VLVDL = 2.56–2.66 V), illegal opcode/address detection, and flash/RAM access protection. Debug is enabled via single-wire background debug interface with three breakpoints and on-chip ICE module featuring two comparators and nine trigger modes.

Key Specifications

Pinout & Package

Package: 32-pin LQFP (lead-free, RoHS-compliant), thermal resistance θ_JA = 88 °C/W (single-layer board), 59 °C/W (four-layer board).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08AC128CLD and S9KEAZ128AMLH, the S9S08RN8W2MLC uniquely balances minimal footprint (32-pin LQFP), certified automotive temperature range (–40 °C to 125 °C), integrated touch sensing, and sub-5 µA stop3 current - making it optimal for cost-sensitive, space-constrained, and battery-aware embedded control where S08 software investment remains strategic.

Availability

S9S08RN8W2MLC is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, home appliance control panels, and medical diagnostic handhelds requiring stable component supply across extended temperature and long product lifecycles.

Supply support for S9S08RN8W2MLC 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 focused on secure connectivity solutions for automotive, industrial, IoT, and mobile applications.

The S9S08RN8W2MLC belongs to the S08RN family designed specifically for cost-optimized, robust 8-bit control in harsh environments - emphasizing low-power operation, integrated analog peripherals, and automotive-grade reliability.

FAQ

What is the maximum bus frequency supported by the S9S08RN8W2MLC?

The S9S08RN8W2MLC supports a maximum bus frequency of 20 MHz across its full operating voltage range (2.7 V to 5.5 V) and temperature range (–40 °C to 125 °C). This frequency is achieved using the internal clock source (ICS) with frequency-locked-loop (FLL) and is confirmed in the S9S08RN16 Series Data Sheet Rev 1 (02/2014), Table 5. The S9S08RN8W2MLC shares identical timing specifications with the S9S08RN16 due to family-level characterization.

Does the S9S08RN8W2MLC support EEPROM with error correction?

Yes, the S9S08RN8W2MLC includes 256 bytes of EEPROM with built-in error correction code (ECC) protection. This feature ensures data integrity during write/erase cycles and mitigates bit errors caused by radiation or wear - critical for storing calibration constants or configuration parameters in automotive and industrial applications. The EEPROM supports 2-byte erase sectors and allows concurrent program/erase while executing code from flash, as specified in the S9S08RN16 Series Data Sheet Section "On-chip memory".

What is the stop3 mode current consumption of the S9S08RN8W2MLC at 3 V?

The S9S08RN8W2MLC consumes 4.5 µA in stop3 mode at VDD = 3 V and ambient temperature –40 °C to 125 °C, per Table 4 of the S9S08RN16 Series Data Sheet. This baseline current excludes active peripherals; adding ADC increases consumption by 40 µA, TSI by 121 µA, and LVD by 128 µA. These additive currents are measured under defined configurations (e.g., PS = 010B, NSCN = 0x0F) and are essential for accurate battery-life estimation in portable designs.

Which package type does the S9S08RN8W2MLC use?

The S9S08RN8W2MLC uses a 32-pin LQFP package, identified by the "LC" suffix in its part number format (S9S08RNAAW2BCC). Per Section 2.3 of the S9S08RN16 Series Data Sheet, "LC" explicitly denotes 32-LQFP. This package has thermal resistance θ_JA = 88 °C/W on single-layer PCBs and 59 °C/W on four-layer boards, enabling reliable operation in thermally constrained automotive and industrial enclosures.

Can the S9S08RN8W2MLC operate with a 32 kHz crystal?

Yes, the S9S08RN8W2MLC supports 32 kHz crystals via its external oscillator (XOSC) in low-range mode (RANGE = 0), with specified frequency range 32–40 kHz. Crystal start-up time is ≤1000 ms in low-power mode and ≤800 ms in high-gain mode. This capability enables precise real-time clock (RTC) operation and low-power wake-up timing - confirmed in Table 9 of the S9S08RN16 Series Data Sheet under "Oscillator crystal or resonator".