S9S08EL32F1CTJ - HCS08 32KB Flash MCU 144-LFQFP | NXP
MPN: S9S08EL32F1CTJ ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.85 | $7.85 |
| 10 | $7.2 | $72.00 |
| 100 | $6.45 | $645.00 |
| 500 | $5.8 | $2,900.00 |
| 1,000 | $5.25 | $5,250.00 |
S9S08EL32F1CTJ Overview
A microcontroller (MCU) is a single-chip computational platform that integrates a CPU, program memory (Flash or ROM), data memory (RAM), and programmable peripheral interfaces (ADC, PWM, timers, communication controllers) on a single die. Within the broader semiconductor taxonomy, an MCU belongs to the class of embedded processors, which also includes microprocessors (MPUs) and digital signal controllers (DSCs). The 8-bit MCU category, exemplified by HCS08 cores, prioritizes deterministic I/O response, ultra-low standby power, and aggressive cost reduction over raw arithmetic performance, making it the workhorse of mass-production appliances, sensor nodes, and industrial controllers. The S9S08 sub-family specifically pairs the HCS08 core with Freescale/NXP's enhanced analog front-end to address cost-sensitive motor-control and white-goods designs.
Key features of the S9S08EL32F1CTJ include 32 KB of embedded Flash with security lock, 1 KB of SRAM, multiple 16-bit timers/PWM channels suitable for three-phase motor control, an analog comparator for current sensing or zero-crossing detection, on-chip debug and programming support via the BDM interface, and a low-power operating mode set optimized for battery-backed and energy-conscious appliances. The wide supply voltage tolerance supports both 3.3V and 5V system rails commonly used in industrial and consumer embedded designs.
Architecturally the device pairs a single-cycle HCS08 instruction pipeline with on-chip analog peripherals including a multi-channel ADC, enabling accurate sensor sampling without external components. The integrated PWM module with dead-time insertion and fault inputs simplifies three-phase inverter design, reducing the BOM count and shortening firmware development cycles for BLDC, PMSM, and AC-induction drive applications in the sub-1 kW power range.
Typical applications include household appliance motor control (washing machines, dishwashers, refrigerators, range hoods), HVAC fan and compressor drivers, low-cost industrial sensor terminals, and consumer white goods requiring SPI-communication-based user interfaces. The combination of small Flash footprint, integrated peripherals, and the LFQFP-144 package footprint makes it well matched to compact PCBAs where space and cost are at a premium.
Designers should evaluate the full S9S08EL32 family datasheet for memory-map details, peripheral allocation, and BDM programming sequence before committing the pinout. The 144-pin LFQFP package requires careful PCB footprint tolerance and via-in-pad consideration for reliable manufacturing.
This page synthesizes distributor stock and pricing data, lifecycle status, drop-in alternatives from the same S9S08EL family, and practical engineering guidance not consolidated in the manufacturer datasheet, helping sourcing engineers rapidly assess whether this legacy NXP MCU meets their cost, performance, and supply-chain requirements.
Drop-in alternatives for S9S08EL32F1CTJ — 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 S9S08EL32F1CTJ (same form factor and footprint) — differing in Core Processor, Connectivity, Package, Program Memory Size, RAM Size.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
S9S08EL32F1MTL
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.15 / Unit
View Datasheet →MC9S08EL32F1CTJ
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
S9S12H256J2VFVER
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
Contact for price
View Datasheet →MCF51MM256VMB
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$7.2 / Unit
View Datasheet →MCF52211CAF80
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
Contact for price
View Datasheet →S9S08EL32F1CTJ Maximum Ratings & Electrical Characteristics
| Product Type | 8-bit Microcontroller (MCU) |
| Core Family | HCS08 |
| Program Memory (Flash) | 32 KB |
| Data Memory (RAM) | 1 KB |
| CPU Core | Freescale/NXP HCS08, 8-bit |
| Package Type | 144-pin LFQFP (FJ-type) |
| Package Code | LFQFP |
| Terminal Form | GULL WING |
| Package Shape | SQUARE |
| Operating Temperature Range | -40 C to +85 C |
| Communication Interfaces | SPI |
| Mounting Type | Surface Mount |
| On-Chip Analog Comparator | Yes |
| On-Chip Debug | BDM (Background Debug Mode) |
S9S08EL32F1CTJ square Pin Configuration Guide
Pin configuration for S9S08EL32F1CTJ (square package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for S9S08EL32F1CTJ.
Refer to the datasheet for full pin configuration.
Typical Applications
S9S08EL32F1CTJ is suitable for 6 applications: Appliance Motor Control (BLDC/PMSM), HVAC Fan and Compressor Drivers, White Goods Control Board, Low-Cost Industrial Sensor Terminal, Consumer Electronics User Interface Controller, Battery-Backed Appliance Timer Module.
Appliance Motor Control (BLDC/PMSM)
The S9S08EL32F1CTJ's HCS08 8-bit core, integrated 16-bit timers with PWM and dead-time insertion, fault inputs, and on-chip analog comparators make it well-suited to three-phase brushless DC and PMSM motor drives in washing machines, dishwashers, refrigerators, and range hoods. With 32 KB of Flash it accommodates BLDC commutation tables, FOC control loops, and user-interface handlers in a single chip. Designers place the MCU on the control board with gate-driver ICs and current-sense amplifiers, exploiting the SPI interface to communicate with companion display or sensor modules.
Recommended
HVAC Fan and Compressor Drivers
The S9S08EL32F1CTJ's combination of 32 KB Flash, integrated PWM generators and analog comparators suits HVAC fan and compressor variable-speed drives. The HCS08 core executes PI speed-control loops while the PWM module drives the inverter at frequencies suitable for sensorless BLDC commutation. The -40 C to +85 C industrial operating range handles indoor equipment environments, and the LFQFP-144 footprint exposes enough GPIO for power-factor-correction handshake signals, status LEDs, and serial debug interfaces.
Recommended
White Goods Control Board
White-goods control boards use the S9S08EL32F1CTJ to consolidate user inputs (buttons, rotary encoders), sensor sampling (temperature, water-level, door switches), and motor or heater actuation in a single cost-optimized MCU. Its 1 KB SRAM accommodates the modest data buffers needed for sensor fusion and UI state machines, while 32 KB Flash stores the appliance state machine and diagnostic logs. SPI enables connection to LED-driver or character-display modules on the same PCB.
Recommended
Low-Cost Industrial Sensor Terminal
In compact industrial sensor terminals, the S9S08EL32F1CTJ samples analog inputs via its on-chip ADC, performs basic linearization, and forwards results over SPI to a host controller or gateway. With 32 KB Flash and 1 KB RAM it handles local filtering, alarm thresholds, and self-test routines typical of process-monitoring endpoints. The 144-pin LFQFP exposes sufficient I/O for multi-channel sensor conditioning and discrete status LEDs.
Recommended
Consumer Electronics User Interface Controller
The S9S08EL32F1CTJ serves as a UI controller in consumer electronics, scanning keypads or rotary inputs, driving indicator LEDs over GPIO, and communicating with the main application processor over SPI. The HCS08's deterministic interrupt response guarantees button-debounce and timing accuracy needed for responsive user interfaces. The wide supply tolerance lets the same design support 3.3 V and 5 V mainboards.
Recommended
Battery-Backed Appliance Timer Module
The S9S08EL32F1CTJ's low-power modes and 32 KB Flash suit battery-backed timer modules in smart appliances and standby controllers that must retain time-of-day, schedule, and diagnostic state across mains dropouts. The HCS08 core executes minimal run-time code while waiting on interrupts from a 32 kHz source, drawing micro-amp standby currents typical of S9S08EL family parts. SPI linkage to companion RTC or nonvolatile memory ICs extends the platform's persistence.
Recommended
Recommended Products Summary
Engineering reference data for S9S08EL32F1CTJ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | S9S08EL32F1MTL | MC9S08EL32F1CTJ | S9S12H256J2VFVER |
|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 144-pin LFQFP | Same family variant package | 144-pin LFQFP - same | 144-pin family class |
| CPU Core | HCS08 8-bit | HCS08 8-bit - same | HCS08 8-bit - same | S12 16-bit upgrade |
| Flash Memory | 32 KB | 32 KB - same | 32 KB - same | 256 KB upgrade |
| RAM | 1 KB | 1 KB - same | 1 KB - same | 12 KB upgrade |
| Lifecycle Status | NRND | NRND | Legacy/Discontinued | Active |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C |
| Communication Interface | SPI | SPI - same | SPI - same | SPI, SCI, CAN |
Key Differentiators
- HCS08 deterministic 8-bit core (vs S9S12H256J2VFVER)
- Integrated analog comparator (vs MC9S08SH4MFK)
- Wide package pin count for full peripheral access (vs MC9S08DV128MLF)
Design Notes
The S9S08EL32F1CTJ in 144-pin LFQFP has a moderate thermal resistance typical for this package class; for designs that drive the part near full GPIO load with sustained high CPU activity, follow the manufacturer's PCB layout guidelines including a thermal pad tied to the ground plane. For motor-control applications where the MCU sits near power-driver stages, provide adequate copper area around the LFQFP and isolate the analog ground return path to avoid ADC noise injection.
Place decoupling capacitors (100 nF and 4.7 uF) as close as possible to every VDD pin pair of the LFQFP-144. Use a solid ground plane under the device to support the high-frequency switching transients typical of motor-control applications. Minimize trace lengths to the BDM (BKGD/MS) connector to keep debug programming reliable in production.
Because the S9S08EL32F1CTJ is in NXP NRND status, do not start new high-volume designs with this part without securing a long-term supply agreement or planning a migration path to a Kinetis or S12 alternative. Always validate flash endurance (typically 10k cycles) for applications requiring frequent firmware updates, and ensure the BDM security bits are configured correctly to prevent unauthorized firmware readout in deployed products.
Compliance Information
Compliance status not explicitly stated in the verified distributor or product page extracts; manufacturer datasheet should be consulted for definitive RoHS/lead-free declarations. Automotive AEC-Q100 qualification is not indicated in distributor listings - this part is for industrial/consumer appliance use.
