MC9S12XS256CAE - 16-bit S12X MCU 256KB Flash 40MHz | NXP
Teilenummer: MC9S12XS256CAE ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $10.78 | $10,78 |
| 10 | $10.35 | $103,50 |
| 100 | $9.42 | $942,00 |
| 500 | $8.5 | $4.250,00 |
| 1.000 | $7.95 | $7.950,00 |
MC9S12XS256CAE Übersicht
An MCU (microcontroller unit) is a single-chip computer containing a CPU core, program and data memory, peripherals, and I/O. The 16-bit MCU category sits between 8-bit microcontrollers (used for simple control) and 32-bit Cortex-M/ARM cores (used for complex compute). Within the broader taxonomy, MC9S12XS256CAE belongs to: MCU -> 16-bit MCU -> HCS12X core MCU -> S12XS automotive MCU family -> NXP Freescale legacy S12X lineage -> semiconductor.
Key features include 256 KB of Flash, an integrated CAN (Controller Area Network) module for automotive networking, multiple timers including PWM and ECT, an 8/10/12-bit ADC, and on-chip voltage regulator supporting a wide supply range. The S12XS family provides hardware and software compatibility across the S12X platform, allowing code and PCB reuse. The device supports up to 59 I/O ports and includes background debug mode (BDM) for non-intrusive in-circuit debugging.
Architecturally, the HCS12X core extends the HCS12 with an enhanced XGATE peripheral co-processor (not enabled on this 64-pin derivative), a 16-bit CPU with enhanced indexed addressing, and a modular memory map. The 64-LQFP package (10x10 mm body, 0.5 mm pitch) gives the device a footprint suitable for body-electronics modules where compact PCB layout and AEC-Q100 grade are required.
Typical applications include automotive body control modules (BCM), instrument clusters, HVAC controllers, seat and door zone modules, and lighting controllers. The wide operating temperature range (-40C to +85C industrial grade; +125C available on other S12XS variants) and integrated CAN make it a strong fit for in-vehicle networking.
When designing with the MC9S12XS256CAE, ensure the BDM interface is broken out to a 6-pin header for development, since field firmware updates rely on this access path. Decouple the internal regulator output with at least 1 uF ceramic close to the VDD pins, and route the analog supply (VDDA) separately from the digital VDD to minimize ADC noise coupling.
This page synthesizes distributor pricing, drop-in S12XS family alternatives, and practical engineering notes not found in the manufacturer datasheet alone.
Drop-in-Alternativen für MC9S12XS256CAE – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit MC9S12XS256CAE (gleiche Bauform und Footprint) – abweichend in Operating Temperature, Package, Supply Voltage, Core, Peripherals.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
MC9S12XS128CAE
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
S9S12XS256J0CAE
✅ Drop-In✓ Auf Lager
$11.4 / Stück
Datenblatt ansehen →S9S12XS256J0VAE
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
MC9S12XET256CAG
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$10.55 / Stück
Datenblatt ansehen →MC9S12A256CFUE
✅ Drop-In✓ Auf Lager
$47.08 / Stück
Datenblatt ansehen →S912XET256J2CAE
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
MC9S12XS256CAE Grenzwerte & elektrische Eigenschaften
| Core Processor | HCS12X |
| Core Size | 16-bit |
| Maximum Clock Speed | 40 MHz |
| Program Memory Size | 256 KB (256K x 8) Flash |
| ROM Type | Flash |
| Versorgungsspannung | 1.72 V to 1.98 V (core); 5 V typical I/O supply |
| Betriebstemperatur | -40C to +85C |
| Gehäuse | 64-LQFP (10x10 mm, 0.5 mm pitch) |
| I/O Ports | 59 |
| Connectivity | CANbus, SCI, SPI |
| Montageart | Surface Mount |
| Montagestil | SMD/SMT |
| Lifecycle Stage | ACTIVE |
| Peripherals | PWM, ECT (Enhanced Capture Timer), ADC, CAN, SCI, SPI |
MC9S12XS256CAE 64-lqfp (10x10 mm, 0.5 mm pitch) Pinbelegungsleitfaden
Pinbelegung für MC9S12XS256CAE (64-lqfp (10x10 mm, 0.5 mm pitch)-Gehäuse). Dieser digitale IC umfasst GPIO, Kommunikationsschnittstellen (UART, SPI, I2C) und Versorgungspins. Alternative Pin-Funktionen und Konfigurationsoptionen entnehmen Sie dem Herstellerdatenblatt. Unverzichtbar für Embedded-System-Design und PCB-Layout.
Keine detaillierten Pinbelegungsdaten verfügbar für MC9S12XS256CAE.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
MC9S12XS256CAE ist geeignet für 7 Anwendungs: Automotive Body Control Module (BCM), Instrument Cluster Controller, HVAC Climate Control Module, Door and Seat Zone Module, Lighting Control Module, Battery Management Slave Monitor, Industrial CAN-Connected Sensor Hub.
Automotive Body Control Module (BCM)
The MC9S12XS256CAE fits automotive body control modules because it integrates a CAN 2.0A/B controller (MSCAN), 59 digital I/O ports, multiple PWM channels for driving lamps and motors, and an industrial -40C to +85C operating range that survives underhood-adjacent thermal stress. Its 256 KB Flash hosts BCM firmware for door locks, mirror control, and wiper logic, while the on-chip 5V regulator simplifies power-tree design on a single 12V battery rail. The 64-LQFP package gives a compact 10x10 mm PCB footprint that fits typical body-electronics housings. Compared with newer 32-bit Cortex-M parts, the HCS12X core offers deterministic interrupt latency and well-proven COTS BDM debugging for production line firmware updates via CAN UDS.
Empfohlen
Instrument Cluster Controller
For instrument clusters, the MC9S12XS256CAE's 40 MHz CPU and 256 KB Flash drive stepper-motor gauges, LCD segments, and CAN message parsing for vehicle network data. The HCS12X core's hardware divider and indexed addressing handle gauge sweep calculations at low jitter, while the on-chip SCI and SPI interfaces connect to companion LED drivers and stepper-motor pre-driver ICs. The 64-LQFP package provides enough I/O to drive a 5-gauge cluster plus tell-tales and warning lamps. The internal voltage regulator eases the 12V battery rail down to the core's 2.5V supply without an external LDO. Compared with external MCU + display-driver architectures, this single-chip solution reduces BOM and PCB area.
Empfohlen
HVAC Climate Control Module
HVAC modules use the MC9S12XS256CAE because of its 8-channel ADC for temperature sensor inputs (cabin, duct, ambient, sun-load), PWM channels for blower motor and blend-door actuators, and CAN interface to the vehicle network. The 256 KB Flash accommodates mode-control state machines and sensor-fusion algorithms, while the 64-LQFP gives sufficient analog and digital I/O for a multi-zone HVAC. The S12X interrupt controller prioritizes the real-time sensor-sampling loop with deterministic response. Compared with 8-bit MCUs, the 16-bit HCS12X simplifies fractional arithmetic for PID temperature control loops.
Empfohlen
Door and Seat Zone Module
Door-zone and seat-control modules leverage the MC9S12XS256CAE's 59 I/O ports to drive window lift motors, mirror actuators, seat-position motors, and LED puddle lamps, with CAN connecting each zone to the body controller. The 256 KB Flash stores seat-memory position tables and window anti-pinch algorithms. The S12XS family's wide industrial temperature rating handles door-interior thermal cycling. Compared with multiple discrete 8-bit MCUs per door, one MC9S12XS256CAE per zone consolidates control and reduces wiring. The BDM debug header enables end-of-line firmware provisioning on the assembly line.
Empfohlen
Lighting Control Module
Lighting modules use the MC9S12XS256CAE for exterior and interior lamp control including daytime running lights, turn signals, headlamp leveling, and matrix-LED drivers. The HCS12X's PWM channels generate the dimming signals, while the CAN interface receives lighting commands from the BCM. The 256 KB Flash supports adaptive-drive beam algorithms and turn-signal sequencing logic. Compared with mechanical relay-based lighting, this solid-state approach supports LED-current feedback and diagnostic fault detection required by modern automotive lighting standards.
Empfohlen
Battery Management Slave Monitor
In 12V lead-acid and mild-hybrid systems, the MC9S12XS256CAE acts as a battery-cell monitor slave with its 8-channel ADC reading cell voltages and on-chip SCI connecting to the master BMS via opto-isolated UART. The HCS12X's deterministic interrupt latency ensures consistent ADC sampling intervals for accurate state-of-charge calculation. The wide operating temperature range handles underhood battery thermal extremes. Compared with dedicated analog battery monitor ASICs, the S12X approach gives more flexibility for state-of-health algorithms in software.
Empfohlen
Industrial CAN-Connected Sensor Hub
Outside automotive, the MC9S12XS256CAE serves industrial CAN-Open sensor hubs for factory automation, where its CAN interface, 59 I/O, and 256 KB Flash aggregate multiple sensor inputs (analog temperature, digital encoders, SPI accelerometers) into a single CAN-Open node. The industrial -40C to +85C range tolerates factory-floor thermal stress, and the BDM debug port supports field service via CAN-stick. Compared with 32-bit Cortex-M alternatives, the 16-bit HCS12X offers a more deterministic real-time response for closed-loop motion control with lower cost.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für MC9S12XS256CAE – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | MC9S12XS128CAE | S9S12XS256J0CAE | S9S12XS256J0VAE | MC9S12XET256CAG | MC9S12A256CFUE |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 64-LQFP (10x10 mm) | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same | 64-LQFP - same |
| Core | HCS12X 16-bit | HCS12X 16-bit | HCS12X 16-bit | HCS12X 16-bit | HCS12X + XGATE | HCS12 (no XGATE) |
| Clock Speed | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 25 MHz |
| Flash Size | 256 KB | 128 KB (-50%) | 256 KB | 256 KB | 256 KB | 256 KB |
| CAN Interface | Yes (MSCAN) | Yes (MSCAN) | Yes (MSCAN) | Yes (MSCAN) | Yes (MSCAN) | Yes (MSCAN) |
| Integrated LIN PHY | No | No | Yes | Yes | No | No |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C (AEC-Q100) | -40C to +85C | -40C to +85C |
Wichtigste Unterscheidungsmerkmale
- Same-family Flash scaling without PCB rework (vs. MC9S12XS128CAE)
- Built-in CAN 2.0A/B MSCAN controller (vs. MC9S12A256CFUE)
- Optional integrated LIN transceiver on MagniV family (vs. S9S12XS256J0CAE)
- Higher-performance XGATE co-processor option (vs. MC9S12XET256CAG)
Designhinweise
Estimated: the MC9S12XS256CAE integrates a 5V-to-2.5V internal voltage regulator that powers the HCS12X core. Place a 1 uF X7R ceramic bypass capacitor as close as physically possible to the VDD/VSS core pins, with a wider-trace ground pour to absorb transient switching currents. The 5V I/O ring requires its own decoupling, typically a 100 nF ceramic plus a 4.7 uF bulk cap on the VDDR pin. Failure to decouple the internal regulator is a common root cause of BDM debug instability - do not omit the VREG bypass.
Route the BDM (Background Debug Mode) interface - BKGD, MODC, and RESET - to a 6-pin 0.1-inch-pitch header on the PCB perimeter, even on production boards. The BDM is the only way to recover a locked-out MCU or to flash firmware before the CAN bootloader is operational. Keep BDM trace length under 50 mm to avoid signal-integrity issues at the BDM baud rate. The 64-LQFP pinout places these pins in one corner for layout convenience.
Avoid using a non-qualified crystal oscillator: the S12X PLL expects a 4-25 MHz fundamental-mode crystal or resonator with load capacitance specified by the crystal vendor. Using a 3rd-overtone crystal without the proper load network will cause the PLL to fail to lock, leaving the MCU in limp mode at the unmultiplied oscillator frequency. Additionally, configure the COP (Computer Operating Properly) watchdog before enabling interrupts, since a runaway ISR without COP reset will brick the BCM until power-cycle.
The CAN bus pins (CANH, CANL) require a split-terminations network (typically 60 ohm + 60 ohm + 4.7 nF) rather than a single 120 ohm resistor at the node, especially in automotive body modules where the CAN bus length exceeds several meters. Place the common-mode choke close to the connector and add ESD protection rated to 15 kV HBM (e.g., NXP PESD1CAN) on the bus pins - the on-chip ESD diode alone is insufficient for OEM EMC compliance.
Compliance-Informationen
RoHS/REACH/AEC-Q100 status not stated explicitly in the verified web data; 'CAE' is the industrial -40C to +85C suffix, while AEC-Q100 Grade 0/1 variants use 'V' or 'M' suffixes per NXP's S12XS ordering information. Verify exact compliance via NXP product page or full datasheet.
