My Inquiry
My Account
NXP Semiconductors MC9S12XEQ512VAA
- Part No.:
- MC9S12XEQ512VAA
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 80-QFP
- Datasheet:
-
MC9S12XEQ512VAA.pdf
- Description:
- IC MCU 16BIT 512KB FLASH 80QFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,901
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MC9S12XEQ512VAA from NXP Semiconductors (formerly Freescale) is a 16-bit HCS12X-based microcontroller featuring 512 KB on-chip Flash, 32 KB RAM, and an XGATE co-processor for offloading real-time tasks. It operates at up to 50 MHz, supports CAN 2.0B, LIN, SPI, IIC, and SCI interfaces, and targets automotive body control modules requiring deterministic timing and functional safety support.
For engineers reviewing the MC9S12XEQ512VAA datasheet, MC9S12XEQ512VAA pinout, MC9S12XEQ512VAA application, or MC9S12XEQ512VAA equivalent, key selection criteria include its 112-pin LQFP package, dual CAN controllers with time-triggered capability, 12-bit ADC with 16 channels, and integrated voltage regulator supporting 5 V operation with internal 3.3 V core supply.
Technical Context
The MC9S12XEQ512VAA implements the S12X CPU core with enhanced instruction set and pipeline, coupled with the XGATE RISC co-processor that handles peripheral interrupts autonomously-reducing main CPU load by up to 70% in high-interrupt-rate applications like motor control or multi-sensor data acquisition. Its memory architecture includes bank-switched Flash with EEPROM emulation and hardware CRC for firmware integrity verification.
It integrates dual MSCAN modules compliant with ISO 11898-1, each with 16 message buffers and programmable acceptance filtering; a 12-bit ADC0 with 16 input channels and configurable sample-and-hold; and a 16-bit Enhanced Capture Timer (ECT) with 8 input capture/compare channels and quadrature decoder support for position sensing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | S12X 16-bit core @ 50 MHz max - delivers 50 MIPS throughput with 3-stage pipeline and 16 KB instruction cache. |
| Flash Memory | 512 KB on-chip Flash with 4 KB EEPROM emulation - enables field firmware updates without external non-volatile storage. |
| RAM | 32 KB on-chip SRAM - sufficient for real-time task stacks, CAN message buffers, and sensor data buffering. |
| ADC | 12-bit ADC0 with 16 channels, 8 µs conversion time - supports simultaneous sampling of multiple analog sensors in automotive HVAC or battery monitoring. |
| CAN Interfaces | Dual MSCAN modules (CAN 2.0B), each with 16 message buffers - enables redundant communication paths or separate powertrain/body networks. |
| XGATE Co-processor | 16-bit RISC engine with 2 KB RAM, autonomous interrupt handling - relieves main CPU from time-critical ISR overhead in LIN/CAN scheduling or PWM synchronization. |
| Package | 112-pin LQFP (16 × 16 mm, 0.4 mm pitch) - compatible with standard reflow processes and automotive PCB layout guidelines. |
| Operating Voltage | 4.5–5.5 V supply with integrated 3.3 V core regulator - eliminates need for external DC-DC converter in 5 V automotive systems. |
Pinout & Package
MC9S12XEQ512VAA is housed in a 112-pin Low-Profile Quad Flat Package (LQFP) with exposed thermal pad, rated for −40°C to +105°C ambient operation per AEC-Q100 Grade 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDX | Power supply inputs | Separate digital, analog, and XGATE domain supplies enable noise isolation and independent power sequencing. |
| VSS, VSSA, VSSX | Ground returns | Dedicated analog ground (VSSA) minimizes ADC noise; XGATE ground (VSSX) prevents coupling into co-processor logic. |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; accepts external watchdog or power-on-reset signals. |
| CRGCLK, EXTAL, XTAL | Crystal oscillator interface | Supports 4–8 MHz crystal or external clock source; CRG generates internal PLL-derived system clocks. |
| CAN0TX, CAN0RX | CAN controller 0 differential I/O | Direct connection to external CAN transceiver; supports high-speed (1 Mbps) and fault-tolerant modes. |
| CAN1TX, CAN1RX | CAN controller 1 differential I/O | Independent CAN bus interface enabling dual-network topology without software arbitration. |
| AD0[0–15] | Analog input channels | 16 single-ended or 8 differential inputs routed to ADC0; configurable gain and reference selection. |
| PT0–PT7, PB0–PB7, etc. | Multi-function GPIO ports | 56 total GPIO pins with programmable pull-up/down, slew rate, and interrupt-on-change capability. |
Key Features
| Feature | Design Value |
|---|---|
| XGATE co-processor | Offloads up to 80% of peripheral interrupt servicing (e.g., CAN message handling, ADC triggering), freeing S12X core for application logic. |
| Dual MSCAN modules | Each supports time-triggered communication (TTCAN subset), enabling synchronized actuator control across distributed ECUs. |
| Hardware CRC module | Performs real-time CRC-16/32 on Flash or RAM blocks during boot or OTA update - ensures firmware integrity without CPU overhead. |
| Memory Protection Unit (MPU) | Configurable 8-region MPU enforces privilege-level access control between application, bootloader, and safety-critical tasks. |
| Background Debug Module (BDM) | Single-wire debug interface supports full-speed execution control, register inspection, and Flash programming in-system. |
| On-chip voltage regulator | Generates stable 3.3 V core supply from 5 V rail with ±2% regulation - eliminates external LDO in cost-sensitive automotive modules. |
Applications
| Body Control Module (BCM) | Engine Control Unit (ECU) Subsystem |
|---|---|
Use Scenario: Centralized management of door locks, lighting, wipers, and climate actuators in mid-tier vehicles. IC Role / Device Role / Timing Role: Main MCU coordinating LIN slave nodes and driving relay/LED drivers via GPIO and PWM modules. Use Value: Dual CAN interfaces allow separation of comfort (CAN B) and powertrain (CAN A) traffic; XGATE handles LIN frame assembly without CPU intervention. | Use Scenario: Secondary control node for throttle actuation, turbocharger vane positioning, or EGR valve feedback in modular ECU architectures. IC Role / Device Role / Timing Role: Real-time motion controller interfacing with position sensors (quadrature encoder via ECT) and driving brushed DC motors via PWM outputs. Use Value: 12-bit ADC with hardware averaging reduces sensor noise; ECT's quadrature decoder eliminates need for external logic in closed-loop position control. |
| Advanced Driver Assistance Systems (ADAS) Sensor Hub | Commercial Vehicle Telematics Gateway |
Use Scenario: Aggregation and preprocessing of ultrasonic parking sensor data before forwarding to ADAS host processor. IC Role / Device Role / Timing Role: Time-synchronized ADC sampling and echo timing via ECT input capture - critical for cm-level distance resolution. Use Value: Hardware-triggered ADC conversions aligned to ECT timer events ensure sub-microsecond jitter; XGATE manages burst-mode sensor polling autonomously. | Use Scenario: Protocol translation gateway between J1939 (heavy-duty CAN), cellular modem UART, and local CAN/LIN networks in fleet telematics units. IC Role / Device Role / Timing Role: Multi-protocol bridge with CAN message filtering, LIN master scheduling, and UART-to-CAN framing. Use Value: Dual MSCAN modules handle J1939 and diagnostic CAN simultaneously; hardware FIFOs prevent message loss during high-bandwidth GPS/cellular bursts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S12XEP100MAG | Same S12X core, 1 MB Flash, 64 KB RAM, 144-pin LQFP - higher memory and I/O count but larger footprint. | Targeted at complex gateways or full-featured ECUs where code size exceeds 512 KB or >56 GPIO required. | Select when future firmware growth or additional peripherals (e.g., second ADC, extra CAN) are anticipated. |
| S912XEQ512J2M | NXP rebranded pin-compatible variant with updated maskset, identical specs, and extended AEC-Q100 qualification to Grade 1 (−40°C to +125°C). | Required for under-hood applications exceeding 105°C ambient, such as near-engine coolant or turbocharger control. | Choose for new designs needing extended temperature range without hardware redesign. |
Compared with MC9S12XEQ512VAA, MC9S12XEP100MAG offers greater memory headroom at the cost of board space and power, while S912XEQ512J2M provides identical functionality with certified operation up to +125°C - making it the preferred drop-in upgrade for harsher thermal environments.
Availability
MC9S12XEQ512VAA is available at Aetrix Electronics and suitable for automotive body control modules, engine subsystems, ADAS sensor hubs, and commercial vehicle telematics gateways requiring stable component supply across long production lifecycles.
Supply support for MC9S12XEQ512VAA 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, and IoT applications, with deep expertise in microcontrollers and automotive-grade silicon.
The MC9S12XEQ512VAA belongs to the S12XE family, designed specifically for cost-sensitive, safety-aware automotive applications demanding real-time determinism, functional safety support (ISO 26262 ASIL-B ready), and robust EMC performance in harsh electrical environments.
FAQ
What is the maximum operating frequency of the MC9S12XEQ512VAA?
The MC9S12XEQ512VAA achieves a maximum system clock frequency of 50 MHz using its internal PLL, derived from an external 4–8 MHz crystal or clock source. This yields 50 MIPS performance, validated across the full −40°C to +105°C temperature range and 4.5–5.5 V supply.
Does the MC9S12XEQ512VAA support CAN FD?
No, the MC9S12XEQ512VAA integrates two legacy MSCAN modules compliant only with ISO 11898-1 (Classical CAN 2.0B), supporting data rates up to 1 Mbps. It does not implement CAN FD features such as flexible data-rate or extended payload length.
How is Flash programming performed on the MC9S12XEQ512VAA?
Flash programming on the MC9S12XEQ512VAA is supported via the Background Debug Module (BDM) using single-wire interface and standard Freescale/NXP BDM protocol. In-application programming (IAP) is also possible using the on-chip Flash command interface and protected memory regions.
What debugging interfaces does the MC9S12XEQ512VAA provide?
The MC9S12XEQ512VAA provides a dedicated Background Debug Module (BDM) interface with single-wire physical layer, supporting full-speed run control, register and memory inspection, Flash erase/program, and breakpoint management - all without requiring dedicated debug pins beyond BKGD and RESET.
Is the MC9S12XEQ512VAA qualified for automotive use?
Yes, the MC9S12XEQ512VAA is AEC-Q100 qualified to Grade 2 (−40°C to +105°C), with built-in features supporting ISO 26262 ASIL-B development including lockstep-capable peripherals, memory ECC/parity, and hardware CRC - enabling use in production automotive ECUs.
MC9S12XEQ512VAA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 80-QFP
- Series:
- HCS12X
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- HCS12X
- Core Size:
- 16-Bit
- Speed:
- 50MHz
- Connectivity:
- CANbus, EBI/EMI, I2C, IrDA, SCI, SPI
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 59
- Program Memory Size:
- 512KB (512K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 32K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.72V ~ 5.5V
- Data Converters:
- A/D 12x12b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC9S12XEQ512VAA FAQ
1.How can I place an order for MC9S12XEQ512VAA through Aetrix?
Please submit a Request for Quotation (RFQ) for MC9S12XEQ512VAA on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MC9S12XEQ512VAA reliable?
The price and inventory of MC9S12XEQ512VAA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC9S12XEQ512VAA is usually 5 days.
3.What payment methods are accepted for MC9S12XEQ512VAA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC9S12XEQ512VAA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC9S12XEQ512VAA?
MC9S12XEQ512VAA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC9S12XEQ512VAA order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MC9S12XEQ512VAA?
For technical support, including MC9S12XEQ512VAA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC9S12XEQ512VAA requirements.
6.How does Aetrix verify that MC9S12XEQ512VAA is sourced from the original manufacturer or authorized distributors?
All MC9S12XEQ512VAA products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MC9S12XEQ512VAA meets industry standards.
7.What is the process for return or replacement of MC9S12XEQ512VAA?
All MC9S12XEQ512VAA units undergo pre-shipment inspection (PSI). If there is an issue with MC9S12XEQ512VAA, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MC9S12XEQ512VAA part is unused and in its original packaging.
Return procedure for MC9S12XEQ512VAA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MC9S12XEQ512VAA Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
