MC9S12XS128MAE - 16-bit 128KB Flash HCS12X MCU 64-LQFP | NXP (Tape & Reel)
Référence : MC9S12XS128MAE ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $16.4122 | $16,41 |
MC9S12XS128MAE Présentation
An HCS12X microcontroller is a 16-bit CISC (Complex Instruction Set Computer) MCU built around Freescale/NXP's enhanced HCS12 architecture with XGATE co-processor extensions. It belongs to the broader category of automotive-grade microcontrollers (MCUs), sitting hierarchically below embedded controllers and above general-purpose 8/32-bit MCUs in the automotive ECU design stack. The S12XS family specifically targets body electronics modules where moderate performance, peripheral integration, and AEC-Q100 reliability are required without the cost of 32-bit Cortex-M parts.
Key features include 128KB Flash program memory, 8KB EEPROM, 8KB RAM, 44 I/O pins, and integrated peripherals such as LVD (Low-Voltage Detect), POR (Power-On Reset), PWM (Pulse Width Modulation) channels, and a Watchdog Timer. The device operates from a 5V supply and supports industrial temperature grade, making it suitable for under-hood and cabin automotive environments. The HCS12X core with XGATE delivers efficient peripheral event handling and deterministic interrupt response for real-time body control tasks.
Architecture-wise, the HCS12X uses a 16-bit data path with enhanced addressing modes, a hardware multiplier, and an XGATE peripheral co-processor for offloading interrupt-driven tasks. The integrated CANbus module supports CAN 2.0A/B protocols required for automotive networking, while SCI (Serial Communication Interface) and SPI enable additional in-vehicle and inter-IC communication. The 64-LQFP package (10x10 mm body) provides ample pin-out for the 44 I/O plus dedicated supply, oscillator, and debug pins.
Typical applications include automotive body control modules (BCMs) for door/window/lighting control, instrument cluster driver modules, HVAC controllers, and gateway modules bridging CAN and LIN networks. The combination of CAN, SCI, and SPI makes the S12XS suitable for body domain controllers in mid-tier vehicles and commercial fleet telematics.
When designing with this device, ensure the BDM (Background Debug Mode) interface is accessible for in-circuit programming and debug. The device requires a stable 5V supply; place decoupling capacitors (100nF plus bulk) close to VDD pins. Pay attention to oscillator pin loading and follow NXP EMC guidelines for in-vehicle PCB layout.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes for engineers evaluating the MC9S12XS128MAE for automotive body electronics applications.
Alternatives de remplacement direct pour MC9S12XS128MAE — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec MC9S12XS128MAE (même facteur de forme et même empreinte) — différant par Package, Operating Temperature, ADC, Core, Mounting Type.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
MC9S12XS128CAE
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
S9S12XS128J0VLF
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
MC9S12XS128MAE Valeurs maximales et caractéristiques électriques
| Core Processor | HCS12X |
| Core Size | 16-Bit |
| Program Memory Size | 128KB (128K x 8) FLASH |
| EEPROM Size | 8KB |
| RAM Size | 8KB |
| Maximum Clock Speed | 40 MHz |
| Tension d'alimentation | 5 V |
| Number of I/O | 44 |
| Connectivity | CANbus, SCI, SPI |
| Peripherals | LVD, POR, PWM, WDT |
| Boîtier | 64-LQFP (10x10 mm) |
| Type de montage | Surface Mount |
| Température de fonctionnement | -40C to +125C (Industrial/Automotive) |
| Statut RoHS | Compliant |
| Part Status | Obsolete (per distributor listings) |
Configuration des broches de MC9S12XS128MAE
| Broche 1 | VDDR — Regulated supply for internal MCU logic |
| Broche 2 | VSS1 — Ground reference 1 |
| Broche 3 | VDD1 — Digital supply voltage 1 (5V) |
| Broche 4 | BKGD — Background Debug Mode pin for in-circuit programming |
| Broche 5 | RESET — Active-low reset input (bidirectional) |
| Broche 6 | TCLK — Test clock input for factory test |
| Broche 7 | PA0 — Port A bit 0 (general I/O) |
| Broche 8 | PA1 — Port A bit 1 (general I/O) |
| Broche 9 | PA2 — Port A bit 2 (general I/O) |
| Broche 10 | PA3 — Port A bit 3 (general I/O) |
| Broche 11 | PA4 — Port A bit 4 (general I/O) |
| Broche 12 | PA5 — Port A bit 5 (general I/O) |
| Broche 13 | PA6 — Port A bit 6 (general I/O) |
| Broche 14 | PA7 — Port A bit 7 (general I/O) |
| Broche 15 | VSS2 — Ground reference 2 |
| Broche 16 | VDD2 — Digital supply voltage 2 (5V) |
| Broche 17 | PB0 — Port B bit 0 (general I/O) |
| Broche 18 | PB1 — Port B bit 1 (general I/O) |
| Broche 19 | PB2 — Port B bit 2 (general I/O) |
| Broche 20 | PB3 — Port B bit 3 (general I/O) |
| Broche 21 | PB4 — Port B bit 4 (general I/O) |
| Broche 22 | PB5 — Port B bit 5 (general I/O) |
| Broche 23 | PB6 — Port B bit 6 (general I/O) |
| Broche 24 | PB7 — Port B bit 7 (general I/O) |
| Broche 25 | PC0 — Port C bit 0 (general I/O) |
| Broche 26 | PC1 — Port C bit 1 (general I/O) |
| Broche 27 | PC2 — Port C bit 2 (general I/O) |
| Broche 28 | PC3 — Port C bit 3 (general I/O) |
| Broche 29 | PC4 — Port C bit 4 (general I/O) |
| Broche 30 | PC5 — Port C bit 5 (general I/O) |
| Broche 31 | PC6 — Port C bit 6 (general I/O) |
| Broche 32 | PC7 — Port C bit 7 (general I/O) |
| Broche 33 | PD0 — Port D bit 0 / CAN TX (per datasheet mux) |
| Broche 34 | PD1 — Port D bit 1 / CAN RX (per datasheet mux) |
| Broche 35 | PD2 — Port D bit 2 (general I/O or SPI) |
| Broche 36 | PD3 — Port D bit 3 (general I/O or SPI) |
| Broche 37 | PD4 — Port D bit 4 (general I/O or SPI) |
| Broche 38 | PD5 — Port D bit 5 (general I/O or SPI) |
| Broche 39 | PE0 — Port E bit 0 / IRQ (interrupt request) |
| Broche 40 | PE1 — Port E bit 1 / IRQ |
| Broche 41 | PE2 — Port E bit 2 / SCI TX |
| Broche 42 | PE3 — Port E bit 3 / SCI RX |
| Broche 43 | PE4 — Port E bit 4 / SCI |
| Broche 44 | PE5 — Port E bit 5 / SCI |
| Broche 45 | PE6 — Port E bit 6 / PWM |
| Broche 46 | PE7 — Port E bit 7 / PWM |
| Broche 47 | PJ0 — Port J bit 0 / PWM |
| Broche 48 | PJ1 — Port J bit 1 / PWM |
| Broche 49 | PJ2 — Port J bit 2 / PWM |
| Broche 50 | PJ3 — Port J bit 3 / PWM |
| Broche 51 | PJ4 — Port J bit 4 / PWM |
| Broche 52 | PJ5 — Port J bit 5 / PWM |
| Broche 53 | PJ6 — Port J bit 6 / PWM |
| Broche 54 | PJ7 — Port J bit 7 / PWM |
| Broche 55 | PK0 — Port K bit 0 (general I/O) |
| Broche 56 | PK1 — Port K bit 1 (general I/O) |
| Broche 57 | PK2 — Port K bit 2 (general I/O) |
| Broche 58 | PK3 — Port K bit 3 (general I/O) |
| Broche 59 | PK4 — Port K bit 4 (general I/O) |
| Broche 60 | PK5 — Port K bit 5 (general I/O) |
| Broche 61 | PK6 — Port K bit 6 (general I/O) |
| Broche 62 | PK7 — Port K bit 7 (general I/O) |
| Broche 63 | EXTAL — External clock/crystal input |
| Broche 64 | XTAL — Crystal driver output |
Applications typiques
MC9S12XS128MAE convient pour 6 applications: Automotive Body Control Module (BCM), Instrument Cluster Driver Module, HVAC Climate Controller, Automotive Gateway Module (Entry-Level), Industrial CAN-Enabled I/O Module, Commercial Vehicle Telematics Module.
Automotive Body Control Module (BCM)
The MC9S12XS128MAE's 5V operation, 40MHz HCS12X core, and integrated MSCAN (CAN 2.0A/B) controller make it a strong fit for automotive BCMs that coordinate lighting, door locks, wipers, and accessory relays. The 128KB Flash accommodates BCM diagnostics and J1939/CAN message handling code, while the 8KB RAM handles typical CAN scheduling buffers. Compared to 32-bit Cortex-M parts, the HCS12X has lower cost and proven long-term automotive supply. Placed on a BCM PCB between a 12V-to-5V regulator and the CAN transceiver, the MCU manages up to 44 I/O for switch sensing and actuator driving; the trade-off is fixed CAN bit timing versus the flexibility of CAN FD on newer NXP families.
Recommandé
Instrument Cluster Driver Module
Cluster modules for analog/digital gauges benefit from the MC9S12XS128MAE's PWM channels (for backlight intensity and stepper motor control of analog needles), 8KB EEPROM for odometer/calibration storage, and 64-LQFP footprint that simplifies PCB layout for compact clusters. The 40MHz HCS12X provides sufficient throughput for the typical gauge refresh rate (~60 Hz) plus CAN polling of vehicle speed/RPM. Unlike higher-end cluster MCUs, this part avoids the cost of an external graphics LCD controller. Designers value its deterministic interrupt response for needle stepping; the main limitation is RAM size, which constrains advanced on-cluster graphics rendering.
Recommandé
HVAC Climate Controller
HVAC modules that drive blower motors, blend/air-mode doors, and read cabin temperature benefit from the MC9S12XS128MAE's 44 I/O (for switches, sensors, and actuator outputs), PWM channels for variable blower speed, and ADC-friendly 5V supply that simplifies sensor signal conditioning. The HCS12X core's deterministic interrupt model handles periodic temperature sampling and actuator updates without jitter. The 128KB Flash is comfortable for HVAC firmware that includes lookup tables, calibration constants, and CAN/LIN communication stacks. The trade-off versus 32-bit competitors is fewer signal processing headroom for advanced cabin comfort algorithms.
Recommandé
Automotive Gateway Module (Entry-Level)
Entry-level gateway modules that bridge CAN and LIN sub-networks fit the MC9S12XS128MAE's MSCAN plus SCI/SPI mix at a cost point below NXP's S32K family. The 40MHz HCS12X core can route typical body-network frame rates (< 500 fps) without backbone loading. With 128KB Flash, firmware can include basic OBD-II diagnostics and network management. The trade-off versus the MC9S12DP512CPVE (512KB Flash variant) is reduced memory for higher-channel-count gateways - designers should select the DP family when more than 2-3 CAN channels or large routing tables are required.
Recommandé
Industrial CAN-Enabled I/O Module
Industrial CANOpen or DeviceNet slave modules benefit from the MC9S12XS128MAE's 5V-tolerant digital I/O (44 lines), MSCAN controller, and industrial temperature grade (-40C to +125C). The 128KB Flash accommodates CANOpen protocol stack libraries, and 8KB EEPROM stores node configuration/calibration data without external memory. Compared to typical 32-bit industrial MCUs, this part offers a lower unit cost and simpler toolchain. The limitation is fewer A/D channels than dedicated industrial ADC chips - designers should add an external ADC for high-accuracy sensor reading if needed.
Recommandé
Commercial Vehicle Telematics Module
Fleet telematics modules collecting GPS, accelerometer, and CAN-bus vehicle data can use the MC9S12XS128MAE for the CAN data acquisition side, pairing it with an external cellular/GPS module via UART. The 5V supply simplifies integration with 12V/24V commercial vehicle electrical systems. 128KB Flash stores trip logging firmware, and the part's automotive temperature grade handles commercial under-cab environments. The trade-off versus dedicated telematics MCUs is no integrated GPS baseband - this MCU is best used as the CAN-data preprocessor in a multi-chip telematics design.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour MC9S12XS128MAE — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | MC9S12XS128CAE | MC9S12XS128MAE | S9S12XS128J0VLF |
|---|---|---|---|---|
| Package | 64-LQFP (10x10 mm) | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same | 64-LQFP - same |
| Brand | NXP Semiconductors (formerly Freescale) | NXP Semiconductors - same | NXP Semiconductors - same | NXP Semiconductors - same |
| Core | HCS12X (16-bit) | HCS12X (16-bit) - same | HCS12X (16-bit) - same | HCS12X (16-bit) - same |
| Clock Speed | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Program Memory | 128KB Flash | 128KB Flash | 128KB Flash | 128KB Flash |
| RAM | 8KB | 8KB | 8KB | 8KB |
| Connectivity | CAN, SCI, SPI | CAN, SCI, SPI | CAN, SCI, SPI | CAN, SCI, SPI |
| Lifecycle Status | Obsolete | Active | Active | Active |
Principaux différenciateurs
- Active S12XS family migration path within NXP (vs MC9S12XS128CAE)
- Lower cost vs DP family gateway MCUs (vs MC9S12DP512CPVE)
- HCS12X ecosystem maturity vs Cortex-M competitors (vs Generic Cortex-M0 automotive MCU)
Notes de conception
The MC9S12XS128MAE requires a clean 5V supply with bulk decoupling of 10uF to 47uF within 25 mm of the VDD pins, plus a 100 nF ceramic bypass capacitor adjacent to each VDD/VDDR pin pair. Automotive environments may need load-dump protection (>40V transient suppression) upstream of the regulator. Estimated: total power budget at 40 MHz with all peripherals active is approximately 80 mA (typical) - verify against your specific peripheral enable configuration in the S12XS reference manual electrical characteristics section.
For the 64-LQFP (10x10 mm) package, follow NXP's S12XS hardware design guidelines: keep the crystal traces short (<10 mm), place the bulk capacitor near VDD1/VDD2 pins, and use a guard ring around the EXTAL/XTAL pins to reduce EMI. The BDM (Background Debug Mode) pin should be accessible via a 2x5 0.1-inch header or test point for in-circuit programming. For automotive ESD/EMC compliance, route CAN bus signals over a continuous ground plane and add TVS diodes on bus lines.
Verify the exact suffix of any S12XS family member before PCB layout: the MAER is Tape and Reel, MAE is Bulk (tray), and CAE is the newer active family member - same die, same pinout, different lifecycle and packaging. Distinguish from the MC9S12DP512CPVE (512KB Flash, different memory map) and MC9S12A128CPVE (128KB Flash, non-XGATE variant) to avoid firmware toolchain mismatch. The obsolete status of MAER (per Octopart) means long-term production runs should plan a redesign to MC9S12XS128CAE-R or S9S12XS128J0VLF.
Informations de conformité
RoHS compliant per NXP product page. AEC-Q100 qualified for automotive body electronics applications (per S12XS family qualification). REACH SVHC compliant. Lead-free (Pb-free) terminal finish per industry standard for LQFP-64.