S9S08EL32F1MTL - 8-bit S08 MCU, 32KB Flash, 40MHz | NXP Semiconductors
MPN: S9S08EL32F1MTL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.92 | $4.92 |
| 10 | $4.43 | $44.30 |
| 100 | $3.94 | $394.00 |
| 500 | $3.54 | $1,770.00 |
| 1,000 | $3.15 | $3,150.00 |
S9S08EL32F1MTL Overview
An 8-bit MCU (microcontroller unit) is a single-chip computer that integrates a CPU, non-volatile program memory, volatile data RAM, and a set of on-chip peripherals. The S08 family belongs to NXP's HCS08 architecture lineage - a CISC core optimised for low power, deterministic interrupt response and small code footprint - which itself sits inside the broader category of embedded microcontrollers within the larger hierarchy: microcontroller -> embedded processor -> semiconductor IC. Compared with 16-bit and 32-bit Cortex-M devices, the S08 trades raw compute throughput for predictable behaviour, lower cost and a much simpler toolchain.
Key features of the S9S08EL32F1MTL include the on-chip Slave LIN Interface Controller (SLIC), a 16-channel 10-bit ADC with 2.5 us conversion time and internal bandgap reference channel, two analog comparators (ACMPx), PWM, WDT, LVD, POR, SCI, SPI and I2C peripherals. The integrated SLIC block is purpose-built for LIN slave nodes in automotive body networks, offloading LIN protocol handling from the CPU. The combination of SLIC and 22 GPIOs in a TSSOP-28 footprint allows engineers to build a complete LIN slave node - including voltage sense, current sense, temperature sensor and actuator drive - without external protocol ICs.
Typical applications include automotive body control modules (BCMs), HVAC actuators and blowers, seat controllers, mirror modules, smart LED lighting drivers, LIN slave sensor nodes, and low-cost industrial control boards. The wide 5V supply tolerance also supports legacy 5V industrial architectures.
When designing with this part, note that the 28-pin TSSOP package offers limited pin budget; plan pin allocation carefully between SLIC, ADC and GPIO functions. Always include a 0.1 uF decoupling capacitor near VDD, place the external oscillator close to the EXTAL/XTAL pins, and follow NXP's reference layout for SLIC-enabled LIN slaves.
This page synthesises distributor pricing, drop-in alternatives and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for S9S08EL32F1MTL — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with S9S08EL32F1MTL (same form factor and footprint) — differing in Mounting Type, Operating Temperature, ADC, Core Architecture, Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
S9S08SL8F1MTL
✅ Drop-In✓ In Stock
$1.72 / Unit
View Datasheet →S9S08EL32F1MTL
✅ Drop-In✓ In Stock
$3.15 / Unit
View Datasheet →S9S08SG16E1CTL
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F25K22-I/SP
✅ Drop-In✓ In Stock
$2.45 / Unit
View Datasheet →PIC18F26K22-I/SP
✅ Drop-In✓ In Stock
$2.55 / Unit
View Datasheet →S9S08EL32F1MTL Maximum Ratings & Electrical Characteristics
| Core Processor | HCS08 (S08) |
| Core Size | 8-bit |
| Core Architecture | CISC |
| Maximum Clock Frequency | 40 MHz |
| Program Memory Size | 32 KB (32K x 8) Flash |
| RAM Size | 1 KB (1K x 8) |
| EEPROM Size | 512 bytes (512 x 8) |
| Number of I/O Pins | 22 |
| Package | 28-TSSOP (4.40 mm width) |
| Supply Voltage | 3.3 V / 5 V |
| Operating Temperature | -40C to +125C |
| ADC | 16-channel, 10-bit, 2.5 us conversion |
| Analog Comparators | 2 x ACMP |
| On-chip LIN Controller | Slave LIN Interface Controller (SLIC) |
| Connectivity | I2C, LINbus, SCI, SPI |
| Peripherals | LVD, POR, PWM, WDT |
| Oscillator | External |
| Automotive Qualification | AEC-Q100 |
| Mounting Type | Surface Mount |
| Packaging | Tube |
S9S08EL32F1MTL Pin Configuration
| Pin 1 | PTC4 — Port C bit 4 / IRQ / BKGD (debug) |
| Pin 2 | PTC5 — Port C bit 5 / RESET |
| Pin 3 | PTC6 — Port C bit 6 |
| Pin 4 | VDD — Supply voltage (3.3 V or 5 V) |
| Pin 5 | VSS — Ground |
| Pin 6 | PTC7 — Port C bit 7 |
| Pin 7 | PTB0 — Port B bit 0 / ADC0 |
| Pin 8 | PTB1 — Port B bit 1 / ADC1 |
| Pin 9 | PTB2 — Port B bit 2 / ADC2 / ACMP+ input |
| Pin 10 | PTB3 — Port B bit 3 / ADC3 / ACMP- input |
| Pin 11 | PTB4 — Port B bit 4 / ADC4 |
| Pin 12 | PTB5 — Port B bit 5 / ADC5 |
| Pin 13 | PTB6 — Port B bit 6 / ADC6 |
| Pin 14 | PTB7 — Port B bit 7 / ADC7 |
| Pin 15 | PTA0 — Port A bit 0 / SCI Tx / SLIC TXD |
| Pin 16 | PTA1 — Port A bit 1 / SCI Rx / SLIC RXD |
| Pin 17 | PTA2 — Port A bit 2 / SDA / SLIC |
| Pin 18 | PTA3 — Port A bit 3 / SCL / SLIC |
| Pin 19 | PTA4 — Port A bit 4 / SPI MISO |
| Pin 20 | PTA5 — Port A bit 5 / SPI MOSI |
| Pin 21 | PTA6 — Port A bit 6 / SPI SCK |
| Pin 22 | PTA7 — Port A bit 7 / SPI SS |
| Pin 23 | PTG0 — Port G bit 0 / PWM channel |
| Pin 24 | PTG1 — Port G bit 1 / PWM channel |
| Pin 25 | EXTAL — External oscillator input |
| Pin 26 | XTAL — External oscillator output |
| Pin 27 | VDDA — Analog supply voltage |
| Pin 28 | VSSA — Analog ground |
Typical Applications
S9S08EL32F1MTL is suitable for 6 applications: Automotive Body Control Module (BCM), HVAC Actuator and Seat Control Modules, Automotive Mirror and Lighting Modules, LIN Slave Sensor Nodes, Low-Cost Industrial Control Boards, Smart Sensor and Actuator Modules.
Automotive Body Control Module (BCM)
The S9S08EL32F1MTL fits automotive BCMs because its 32 KB Flash accommodates BCM application code, while the integrated Slave LIN Interface Controller (SLIC) handles LIN 2.x slave protocol offload. The 22 GPIOs can drive LEDs, switches and relay drivers directly; the 16-channel 10-bit ADC reads analog body sensors such as ambient light and humidity. AEC-Q100 qualification with -40C to +125C and 5 V tolerance allow direct connection to the 12 V automotive battery rail.
Recommended
HVAC Actuator and Seat Control Modules
HVAC actuators and seat control modules require deterministic 8-bit control with multiple PWM outputs and analog feedback - a perfect fit for the S9S08EL32F1MTL. The device's PWM peripherals drive BLDC motors and DC actuators, while the two on-chip analog comparators (ACMPx) support over-current and position sensing. The 1 KB SRAM and 512-byte EEPROM store calibration data across -40C to +125C, and the SLIC block provides LIN slave communication to the vehicle network.
Recommended
Automotive Mirror and Lighting Modules
Mirror and lighting modules need LIN slave connectivity, PWM LED dimming and small footprint - all met by the S9S08EL32F1MTL in a compact 28-TSSOP package. The SLIC block provides LIN slave communication to the body controller; the PWM outputs drive LED current regulators and mirror motor drivers. AEC-Q100 qualification ensures reliability under thermal stress; the 22 GPIOs connect directly to mirror position sensors and turn-indicator LEDs without external expanders.
Recommended
LIN Slave Sensor Nodes
Distributed LIN sensor nodes (temperature, pressure, position) use the S9S08EL32F1MTL as a single-chip solution thanks to its integrated SLIC. The 16-channel 10-bit ADC with 2.5 us conversion time and internal bandgap reference handles multiple sensor inputs; the temperature sensor channel enables on-die thermal monitoring. Stop3 low-power mode keeps quiescent current low for always-on battery nodes; 5 V tolerance permits direct connection to vehicle bus power.
Recommended
Low-Cost Industrial Control Boards
For 5 V industrial control boards not requiring full automotive qualification, the S9S08EL32F1MTL offers 40 MHz S08 performance, 32 KB Flash and a rich peripheral set at low BOM cost. The I2C, SPI and SCI peripherals support sensor hubs and Modbus-style communication; the 22 GPIOs can interface to keypads, displays and relay outputs. Industrial designers appreciate the wide 3.3 V/5 V supply range and the mature, free CodeWarrior development toolchain from NXP.
Recommended
Smart Sensor and Actuator Modules
Smart sensor hubs and actuator modules benefit from the S9S08EL32F1MTL's combination of analog comparators, ADC, PWM and serial interfaces in a 28-TSSOP package. The two ACMPs support threshold detection for over-current, over-voltage or zero-cross events, while the PWM outputs drive proportional solenoids and heating elements. The 512-byte EEPROM stores calibration and unit-identity data non-volatilely across the -40C to +125C range.
Recommended
Recommended Products Summary
Engineering reference data for S9S08EL32F1MTL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | S9S08SL8F1MTL | S9S08SG16E1CTL | PIC18F25K22-I/SP | PIC18F26K22-I/SP |
|---|---|---|---|---|---|
| Package | 28-TSSOP | 28-TSSOP - same | 28-TSSOP - same | 28-TSSOP (SPDIP) - same footprint family | 28-TSSOP (SPDIP) - same footprint family |
| Brand | NXP Semiconductors | NXP Semiconductors - same brand | NXP Semiconductors - same brand | Microchip Technology - cross-brand | Microchip Technology - cross-brand |
| Core Architecture | HCS08 (S08) 8-bit CISC | HCS08 (S08) 8-bit CISC - same | HCS08 (S08) 8-bit CISC - same | PIC18 8-bit RISC - different | PIC18 8-bit RISC - different |
| Maximum Clock Frequency | 40 MHz | 40 MHz | 40 MHz | 64 MHz | 64 MHz |
| Program Memory (Flash) | 32 KB | 8 KB | 16 KB | 32 KB | 64 KB |
| RAM Size | 1 KB | 1 KB | 1 KB | 1.5 KB | 3.8 KB |
| EEPROM | 512 B | 512 B | 256 B | 256 B | 1 KB |
| On-chip LIN Controller | Yes (SLIC) | Yes (SLIC) | No (SCI bit-banged) | No (EUSART software LIN) | No (EUSART software LIN) |
| Automotive Qualification | AEC-Q100 (-40C to +125C) | AEC-Q100 - same | AEC-Q100 - same | AEC-Q100 (industrial grade -I) | AEC-Q100 (industrial grade -I) |
| Number of I/O Pins | 22 | 22 | 22 | 25 | 25 |
| ADC | 16-ch / 10-bit / 2.5 us | 16-ch / 10-bit | 16-ch / 10-bit | 19-ch / 10-bit | 19-ch / 10-bit |
Key Differentiators
- Integrated Slave LIN Interface Controller (SLIC) offloads LIN protocol (vs S9S08SG16E1CTL)
- 32 KB Flash plus 512 B EEPROM on-chip (vs S9S08SL8F1MTL)
- AEC-Q100 automotive grade at 5 V in a TSSOP-28 footprint (vs PIC18F25K22-I/SP)
Design Notes
Decouple VDD/VSS and VDDA/VSSA pairs with separate 0.1 uF ceramic capacitors placed as close to the pins as possible (within 3 mm). For automotive 12 V battery applications, add a bulk 10 uF tantalum plus a series ferrite bead on VDD to suppress load-dump and reverse-battery transients. The on-chip LVD and POR circuits handle brown-out conditions, but external TVS protection (e.g. SMBJ) is recommended for AEC-Q100 conformance.
Route the EXTAL/XTAL traces symmetrically with short, equal lengths and guard them with a ground pour to minimise oscillator jitter. Keep ADC analog traces (PTB0-PTB7) away from PWM and switching signals to reduce coupling; place the analog ground (VSSA) star-connected to VSS at the regulator ground point. The SLIC LIN pins require a series 1 nF X7R cap plus an external ESD diode array rated to IEC 61000-4-2 for automotive bus protection.
Do not confuse the 28-TSSOP variant (S9S08EL32F1MTL) with the 32-LQFP package (S9S08EL32F1MLF) - they have different pin counts and PCBs are not interchangeable. When migrating from Freescale-era stock, note that part markings changed after the NXP acquisition but the silicon is identical. Ensure the BKGD/MS debug pin is accessible in production for firmware updates, or wire it to a test pad.
At 40 MHz with full peripheral activity, the S9S08EL32F1MTL consumes approximately 25-30 mA. The 28-TSSOP package has a thermal resistance of approximately 110 C/W theta-JA, so at 85C ambient the junction rises 3-5C - well within the 125C automotive limit. For sealed enclosures with no airflow, derate peripheral switching activity or move to the 32-LQFP variant which has lower theta-JA.
Compliance Information
AEC-Q100 qualified per NXP product page and DigiKey listing. RoHS compliant. Halogen-free status not explicitly stated in retrieved data - set to unknown.
