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NXP Semiconductors MC9S12C128CPBE
- Part No.:
- MC9S12C128CPBE
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 52-LQFP
- Datasheet:
-
MC9S12C128CPBE.pdf
- Description:
- IC MCU 16BIT 128KB FLASH 52TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,642
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Product details
Overview
MC9S12C128CPBE from NXP (formerly Freescale) is a 16-bit HCS12 microcontroller featuring 128 KB on-chip Flash, 8 KB RAM, and integrated CAN 2.0A/B controller, PWM, 10-bit 8-channel ADC, and background debug interface. It operates at up to 25 MHz core frequency with 5V tolerant I/O and supports automotive-grade temperature range (–40°C to +125°C). It is used in engine control units, body electronics, and industrial motor control systems requiring robust real-time performance and CAN connectivity.
For engineers reviewing the MC9S12C128CPBE datasheet, MC9S12C128CPBE pinout, MC9S12C128CPBE application, or MC9S12C128CPBE equivalent, key selection considerations include its 112-pin LQFP package, S12 CPU core architecture, 128 KB Flash memory layout, CAN protocol compliance, and BDM-based debug capability - all critical for legacy automotive ECU redesign and industrial control firmware migration.
Technical Context
The MC9S12C128CPBE implements the S12 CPU core with 16-bit data path, 24-bit address bus, and Harvard-style memory architecture. It integrates a scalable CAN controller (S12MSCANV2), 16-bit timer module (TIM16B8CV1), and dual-voltage regulator (VREG3V3V2) supporting internal 3.3 V logic supply from 5 V input.
Its memory subsystem includes banked Flash (128 KB), EEPROM emulation via Flash, and configurable PPAGE register for extended addressing. The device uses a PLL-based clock generator (CRGV4) with external crystal or oscillator input, enabling precise timing control for real-time interrupt handling and CAN bit timing accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | S12 16-bit CPU with 24-bit addressing and 16-MHz–25-MHz operation |
| Flash Memory | 128 KB on-chip Flash with 1K block erase and 2-byte programming |
| RAM | 8 KB on-chip RAM with wait-state-free access in single-cycle mode |
| CAN Interface | One S12MSCANV2 module compliant with ISO 11898-1 (CAN 2.0A/B) |
| ADC | 10-bit, 8-channel ATD10B8C with 8 µs conversion time and software/hardware trigger |
| PWM | 8-channel 8-bit PWM8B6CV1 with center-aligned and edge-aligned modes |
| Package | 112-pin LQFP (20 × 20 mm, 0.65 mm pitch) per Appendix C |
Pinout & Package
MC9S12C128CPBE is housed in a 112-pin LQFP package (20 mm × 20 mm, 0.65 mm pitch) with exposed thermal pad. Pin assignments follow the MC9S12C family standard layout, including dedicated CANH/CANL differential pins, BKGD debug interface, and multiplexed port pins supporting GPIO, analog input, and peripheral functions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual 5 V supply domains (VDD1/VDD2, VSS1/VSS2) for noise isolation between analog/digital sections |
| CANH, CANL | CAN differential bus interface | Direct connection to ISO 11898-compliant transceiver; supports 1 Mbps CAN FD-ready physical layer |
| BKGD | Background debug serial interface | Single-wire BDM communication for flash programming and real-time debugging without halting CPU |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; triggers power-on, low-voltage, and watchdog resets |
| XTAL, EXTAL | Crystal oscillator inputs | Supports 4–8 MHz crystal; feeds CRGV4 PLL for stable 25 MHz system clock generation |
| PORT A–G pins | Multiplexed I/O ports | Configurable as GPIO, ADC inputs (AN0–AN7), PWM outputs, or timer capture/compare signals |
Key Features
| Feature | Design Value |
|---|---|
| On-chip CAN controller | Enables embedded automotive networking without external CAN PHY; supports message filtering and FIFO buffering |
| Background Debug Module (BDM) | Allows non-intrusive firmware update and real-time variable inspection during operation via single-pin BKGD interface |
| 10-bit 8-channel ADC | Provides sensor interface capability for throttle position, temperature, and pressure sensing with hardware-triggered sampling |
| Dual-voltage regulator | Generates internal 3.3 V supply from 5 V input, eliminating need for external LDO in most automotive applications |
| Memory protection | Includes security byte and flash protection bits to prevent unauthorized readout or reprogramming of firmware |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Real-time monitoring of crankshaft position, throttle angle, and oxygen sensor feedback in gasoline engines. IC Role / Device Role / Timing Role: Central MCU executing closed-loop fuel injection and ignition timing algorithms with sub-millisecond interrupt latency. Use Value: Integrated CAN, 10-bit ADC, and deterministic S12 core enable compact, cost-effective ECU designs meeting ISO 14229 diagnostics requirements. |
Use Scenario: Managing door locks, lighting, wipers, and HVAC functions across vehicle zones. IC Role / Device Role / Timing Role: Multi-peripheral coordinator using PWM for LED dimming, GPIO for relay control, and CAN for gateway communication. Use Value: 112-pin LQFP provides sufficient I/O for distributed BCM functions while maintaining compatibility with legacy Freescale toolchains. |
| Industrial Motor Drive | Off-Highway Vehicle Controller |
Use Scenario: Closed-loop speed and torque control of 3-phase BLDC motors in factory automation equipment. IC Role / Device Role / Timing Role: Real-time PWM generation with dead-time insertion and ADC-sampled current feedback at 10 kHz. Use Value: Hardware-accelerated 16-bit TIM module and synchronized ADC triggers ensure precise motor phase timing without CPU overhead. |
Use Scenario: Hydraulic valve sequencing and implement position feedback in agricultural tractors and construction machinery. IC Role / Device Role / Timing Role: Ruggedized controller interfacing with pressure transducers, solenoid drivers, and J1939-compliant CAN networks. Use Value: –40°C to +125°C operating range and 5 V I/O tolerance ensure reliability in high-vibration, wide-temperature environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S12XDP512 | Enhanced XGATE co-processor, 512 KB Flash, 32 KB RAM, dual CAN, LIN support | Higher integration for complex powertrain or chassis control; requires updated toolchain and PCB layout | Select when migrating from MC9S12C128CPBE to higher-performance automotive platforms with expanded memory and peripheral needs |
| S912ZVL128F0MLFR | Z-series S12Z core, 128 KB Flash, 8 KB RAM, integrated LINPHY, enhanced BIST and safety features | Designed for ASIL-B functional safety compliance; includes hardware CRC, flash ECC, and voltage monitoring | Choose for new designs requiring ISO 26262 compliance where MC9S12C128CPBE lacks built-in safety mechanisms |
Compared with MC9S12C128CPBE, MC9S12XDP512 offers scalable compute headroom via XGATE for offloading CAN and ADC tasks, while S912ZVL128F0MLFR delivers certified safety features essential for next-generation vehicle controllers - both require board-level changes but preserve S12 software investment.
Availability
MC9S12C128CPBE is available at Aetrix Electronics and suitable for engine control units, body electronics modules, and industrial motor drives requiring stable component supply and long-term obsolescence management.
Supply support for MC9S12C128CPBE 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 MC9S12C128CPBE belongs to the HCS12 microcontroller family, designed specifically for cost-sensitive, high-reliability automotive body and powertrain control applications with legacy toolchain compatibility.
FAQ
What is the maximum operating frequency of the MC9S12C128CPBE?
The MC9S12C128CPBE supports a maximum core frequency of 25 MHz, achieved via its internal PLL clock generator (CRGV4) when driven by an external 8 MHz crystal. This enables deterministic real-time execution for automotive control loops while maintaining compatibility with legacy 16-bit S12 software ecosystems.
Does the MC9S12C128CPBE support CAN FD?
The MC9S12C128CPBE implements the S12MSCANV2 module compliant with CAN 2.0A/B only; it does not support CAN FD data rates or frame formats. For CAN FD capability, designers must migrate to newer NXP families such as S32K1 or S912ZVL with dedicated CAN FD controllers.
What debug interface does the MC9S12C128CPBE use?
The MC9S12C128CPBE uses the Background Debug Module (BDMV4) accessed via the single BKGD pin, supporting flash programming, breakpoint setting, and real-time variable inspection without halting CPU execution - a key enabler for field firmware updates in automotive ECUs.
Is the MC9S12C128CPBE pin-compatible with other MC9S12C family members?
Yes - the MC9S12C128CPBE shares identical 112-pin LQFP pinout with MC9S12C64 and MC9S12C96 variants, enabling hardware reuse across memory-size variants. However, differences in Flash/RAM size and peripheral enablement require corresponding firmware configuration changes.
What is the operating temperature range for the MC9S12C128CPBE?
The MC9S12C128CPBE is rated for industrial and automotive operation from –40°C to +125°C ambient temperature, validated per AEC-Q100 Grade 2 requirements. Its dual-voltage regulator (VREG3V3V2) and 5 V-tolerant I/O ensure stable functionality across this full range without external biasing components.
MC9S12C128CPBE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 52-LQFP
- Series:
- HCS12
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Verified
- Core Processor:
- HCS12
- Core Size:
- 16-Bit
- Speed:
- 25MHz
- Connectivity:
- CANbus, EBI/EMI, SCI, SPI
- Peripherals:
- POR, PWM, WDT
- Number of I/O:
- 35
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 4K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.35V ~ 5.5V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC9S12C128CPBE FAQ
1.How can I place an order for MC9S12C128CPBE through Aetrix?
Please submit a Request for Quotation (RFQ) for MC9S12C128CPBE 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 MC9S12C128CPBE reliable?
The price and inventory of MC9S12C128CPBE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC9S12C128CPBE is usually 5 days.
3.What payment methods are accepted for MC9S12C128CPBE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC9S12C128CPBE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC9S12C128CPBE?
MC9S12C128CPBE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC9S12C128CPBE 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 MC9S12C128CPBE?
For technical support, including MC9S12C128CPBE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC9S12C128CPBE requirements.
6.How does Aetrix verify that MC9S12C128CPBE is sourced from the original manufacturer or authorized distributors?
All MC9S12C128CPBE 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 MC9S12C128CPBE meets industry standards.
7.What is the process for return or replacement of MC9S12C128CPBE?
All MC9S12C128CPBE units undergo pre-shipment inspection (PSI). If there is an issue with MC9S12C128CPBE, 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 MC9S12C128CPBE part is unused and in its original packaging.
Return procedure for MC9S12C128CPBE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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