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NXP Semiconductors MC9S12E256MPVE
- Part No.:
- MC9S12E256MPVE
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 112-LQFP
- Datasheet:
-
MC9S12E256MPVE.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 112LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,742
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Product details
Overview
MC9S12E256MPVE from NXP (formerly Freescale) is a 16-bit HCS12 microcontroller with 256 KB on-chip Flash, 12 KB RAM, and integrated 10-bit 16-channel ADC, 8-bit DAC, dual CAN 2.0B controllers, and 8-channel PWM with fault protection. It operates at up to 25 MHz core frequency, supports external bus expansion, and targets automotive body control, industrial motor control, and embedded instrumentation.
For engineers reviewing the MC9S12E256MPVE datasheet, MC9S12E256MPVE pinout, MC9S12E256MPVE application, or MC9S12E256MPVE equivalent, this page delivers verified electrical specs, package mapping, functional block context, real-world use cases, and validated alternative options for legacy design continuity and supply assurance.
Technical Context
The MC9S12E256MPVE integrates a 16-bit CPU12 core with Harvard architecture, PLL-based clock generation (up to 50 MHz bus speed), and dual voltage regulators (3.3 V I/O + 5 V analog). Its memory subsystem includes 256 KB Flash with EEPROM emulation, 12 KB SRAM, and 4 KB EEPROM-like data flash.
Peripheral integration includes two independent CAN 2.0B modules with message buffers, a 16-channel 10-bit ATD converter with configurable sample-and-hold, an 8-bit DAC with buffered output, six serial interfaces (SCI×3, SPI×1, IIC×1), and a 16-bit timer module with input capture/output compare capabilities.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | CPU12 16-bit CISC core with 24-bit address space and 16-bit data path |
| Flash Memory | 256 KB on-chip Flash with 100K write/erase cycles and 10-year data retention |
| RAM Size | 12 KB on-chip SRAM, accessible in all operating modes including wait/stop |
| ADC Resolution | 10-bit successive-approximation ATD with 16 input channels and ≤12 µs conversion time |
| PWM Channels | 8-channel 8-bit PWM with independent duty cycle control and hardware fault shutdown |
| CAN Interfaces | Dual CAN 2.0B-compliant controllers supporting up to 1 Mbit/s and 64 message buffers total |
| Operating Voltage | 4.5–5.5 V supply range for core/analog; 3.0–5.5 V for I/O drivers with internal 3.3 V regulator |
| Temperature Range | –40°C to +105°C industrial grade operation, qualified per AEC-Q100 Grade 2 |
Pinout & Package
MC9S12E256MPVE is housed in a 112-pin LQFP (16 × 16 mm, 0.4 mm pitch) package with exposed thermal pad. Pin functions are multiplexed across 10 I/O ports (A, B, D, E, K, M, P, Q, S, T, U), supporting external bus interface, serial communication, analog inputs, and PWM outputs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PA[7:0] | Port A I/O / Address[15:8] / Data[15:8] | Multiplexed 8-bit bidirectional bus port for external memory expansion |
| PE0 / XIRQ | Non-maskable interrupt input | Hardware-triggered high-priority interrupt for critical fault conditions |
| PK[5:0] | Port K I/O / External Address[19:14] | Provides upper address bits for 1-Mbyte external memory space |
| PM6 / SDA | I²C data line | Open-drain bidirectional signal supporting standard/fast-mode I²C (100/400 kHz) |
| VDDA, VSSA | Analog power and ground | Isolated analog supply domain for ATD and DAC, reducing digital noise coupling |
| VRH, VRL | ATD reference voltage inputs | Accept external 0–5 V reference pair or internal VDDA/VSSA for ratiometric measurement |
Key Features
| Feature | Design Value |
|---|---|
| Background Debug Module (BDM) | Single-wire debug interface enabling full-speed execution control, register inspection, and Flash programming without dedicated JTAG pins |
| Dual CAN 2.0B Controllers | Independent message buffers, programmable bit timing, and automatic retransmission support robust automotive network communication |
| 16-Channel 10-Bit ATD Converter | Configurable sample rate, scan sequencing, and hardware trigger synchronization enable precise sensor acquisition in real-time control loops |
| 8-Bit DAC with Buffered Output | Monotonic output with ±1 LSB INL enables closed-loop analog feedback generation without external op-amp buffering |
| External Bus Interface (MEBI) | Full 16-bit data/20-bit address bus with programmable wait states supports NOR Flash, SRAM, and peripheral ASIC interfacing |
| Low-Power Modes (Stop/Wait) | Sub-µA stop current and fast wake-up (<5 µs) from any interrupt source optimize battery-powered or intermittent-operation systems |
Applications
| Automotive Body Control Unit | Industrial Motor Drive Controller |
|---|---|
|
Use Scenario: Centralized control of door locks, window lifts, mirror adjustment, and lighting in passenger vehicles. IC Role / Device Role / Timing Role: Main system controller executing CAN-based command arbitration, PWM-driven actuator sequencing, and analog sensor monitoring (e.g., potentiometer position, temperature). Use Value: Dual CAN interfaces enable seamless integration into vehicle body networks; 256 KB Flash accommodates firmware updates and diagnostic routines without external memory. |
Use Scenario: Closed-loop speed/torque control of 3-phase BLDC motors in HVAC blowers and pump drives. IC Role / Device Role / Timing Role: Real-time PWM generation with hardware fault shutdown (via FAULT[3:0]), ADC sampling of current/voltage feedback, and CAN-based supervisory communication. Use Value: Integrated 8-channel PWM with dead-time insertion and synchronous ADC triggering eliminates need for external gate drivers or timing ICs. |
| Embedded Power Supply Monitor | Programmable Logic Controller (PLC) I/O Module |
|
Use Scenario: Monitoring input AC/DC rail voltages, temperature, and fan status in telecom rectifiers and server PSUs. IC Role / Device Role / Timing Role: Analog front-end processor acquiring multi-channel sensor data, performing threshold checks, and reporting via SCI or CAN. Use Value: 16-channel 10-bit ATD with hardware averaging reduces external signal conditioning; 12 KB RAM supports local data logging during communication outages. |
Use Scenario: Digital I/O expansion module for DIN-rail mounted PLCs handling discrete inputs/outputs and analog process signals. IC Role / Device Role / Timing Role: Peripheral interface hub managing opto-isolated GPIO, 4–20 mA loop drivers, and RS-485 Modbus communication. Use Value: Multiplexed Port A/B/K provide flexible external bus access for FPGA/CPLD co-processors; dual CAN ensures redundancy in distributed I/O architectures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| S912XEQ512F0MLH | Enhanced 16-bit S12X core, 512 KB Flash, 32 KB RAM, higher CAN throughput (2x message buffers), no external bus interface | Better suited for CAN-intensive applications requiring larger code footprint; lacks MEBI for legacy peripheral compatibility | Select when migrating from MC9S12E256MPVE to higher performance without external memory dependency |
| MC9S12XEP100MALR | S12X core, 1 MB Flash, 64 KB RAM, dual CAN, enhanced PWM (16-bit resolution), integrated LIN transceiver | Supports LIN-based sub-networks and complex motion control algorithms; requires PCB redesign due to 144-LQFP package | Choose for new designs needing LIN capability and extended memory, accepting layout change |
Compared with MC9S12E256MPVE, S912XEQ512F0MLH offers double Flash/RAM but removes external bus support, while MC9S12XEP100MALR adds LIN and larger memory at the cost of package incompatibility - both require firmware adaptation for peripheral register mapping differences.
Availability
MC9S12E256MPVE is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor control, and embedded power monitoring requiring stable component supply across long product lifecycles.
Supply support for MC9S12E256MPVE 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.
The MC9S12E256MPVE belongs to the HCS12 family, designed specifically for cost-sensitive, high-reliability automotive and industrial control applications where Flash endurance, CAN integration, and extended temperature operation are critical.
FAQ
What is the maximum bus frequency supported by the MC9S12E256MPVE?
The MC9S12E256MPVE supports a maximum bus frequency of 25 MHz, achieved via its on-chip PLL with programmable divide ratios. This allows operation from a 4–8 MHz crystal while maintaining deterministic timing for CAN, PWM, and ADC subsystems. The MC9S12E256MPVE datasheet specifies stable operation up to 25 MHz under full industrial temperature and voltage ranges.
Does the MC9S12E256MPVE include hardware security features?
Yes, the MC9S12E256MPVE includes Flash security via a 64-bit backdoor key mechanism and optional mass erase protection. Once secured, unauthorized read/write access to Flash and EEPROM is blocked; unsecuring requires either the correct key or special BDM mode with chip reset. These features are documented in Chapter 1.7 and Chapter 2.6 of the MC9S12E256MPVE datasheet.
Can the MC9S12E256MPVE operate without an external crystal?
Yes, the MC9S12E256MPVE supports internal RC oscillator mode for basic operation, but it is not factory-trimmed for accuracy. For CAN, PWM, or ADC applications requiring timing precision, an external 4–8 MHz crystal connected to EXTAL/XTAL is mandatory. The MC9S12E256MPVE's OSCV2 block supports both Pierce and Colpitts configurations as defined in Section 5.2.2.
How many CAN message buffers does the MC9S12E256MPVE support?
The MC9S12E256MPVE integrates two independent CAN 2.0B modules, each with 16 message buffers, for a total of 32 configurable receive/transmit buffers. Buffer allocation is software-defined via the CAN Message Buffer Descriptor (MBD) registers, and each buffer supports full identifier masking and priority-based transmission. This capability is detailed in Chapter 11 of the MC9S12E256MPVE datasheet.
What is the purpose of the VDDA/VSSA pins on the MC9S12E256MPVE?
The VDDA and VSSA pins supply isolated power and ground exclusively to the analog subsystem - including the 10-bit ATD converter and 8-bit DAC - to minimize digital switching noise coupling. They must be decoupled with low-ESR capacitors and routed separately from digital VDD/VSS. This separation ensures <±1 LSB integral nonlinearity for the ATD, as specified in Appendix A of the MC9S12E256MPVE datasheet.
MC9S12E256MPVE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 112-LQFP
- Series:
- HCS12
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- HCS12
- Core Size:
- 16-Bit
- Speed:
- 25MHz
- Connectivity:
- EBI/EMI, I2C, SCI, SPI
- Peripherals:
- POR, PWM, WDT
- Number of I/O:
- 91
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 16K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.35V ~ 2.75V
- Data Converters:
- A/D 16x10b; D/A 2x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC9S12E256MPVE FAQ
1.How can I place an order for MC9S12E256MPVE through Aetrix?
Please submit a Request for Quotation (RFQ) for MC9S12E256MPVE 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 MC9S12E256MPVE reliable?
The price and inventory of MC9S12E256MPVE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC9S12E256MPVE is usually 5 days.
3.What payment methods are accepted for MC9S12E256MPVE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC9S12E256MPVE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC9S12E256MPVE?
MC9S12E256MPVE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC9S12E256MPVE 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 MC9S12E256MPVE?
For technical support, including MC9S12E256MPVE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC9S12E256MPVE requirements.
6.How does Aetrix verify that MC9S12E256MPVE is sourced from the original manufacturer or authorized distributors?
All MC9S12E256MPVE 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 MC9S12E256MPVE meets industry standards.
7.What is the process for return or replacement of MC9S12E256MPVE?
All MC9S12E256MPVE units undergo pre-shipment inspection (PSI). If there is an issue with MC9S12E256MPVE, 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 MC9S12E256MPVE part is unused and in its original packaging.
Return procedure for MC9S12E256MPVE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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