NXP Semiconductors
MC9S12DJ128BCPV - 16-bit 25MHz HCS12 MCU 128KB Flash | NXP
MPN: MC9S12DJ128BCPV ✓ Active
In Stock
Ships in 1-3 business days
2.5 V / 5 V Vdss
112-LQFP (20x20 mm) Package
25 MHz Speed
128 KB (128K x 8) Flash Memory
From $10.05
USD / Unit
MOQ: 1 |
Price updated: 2026-10-17
Volume Pricing
| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $18.5 | $18.50 |
| 10 | $16.4 | $164.00 |
| 100 | $14.2 | $1,420.00 |
| 500 | $12.1 | $6,050.00 |
| 1,000 | $10.05 | $10,050.00 |
ℹ️ All prices are in USD
MC9S12DJ128BCPV Overview
The NXP MC9S12DJ128BCPV is a 16-bit HCS12 microcontroller IC running at 25 MHz with 128 KB (128K x 8) of on-chip Flash and a 112-pin LQFP (20x20 mm) package. It belongs to NXP's (formerly Freescale) HCS12 automotive/industrial MCU family and targets applications that need CAN, SCI/SPI, and analog front-end integration on a single die.
A microcontroller (MCU) is a programmable system-on-a-chip that integrates a CPU, RAM, non-volatile memory (Flash/EEPROM), and peripherals such as timers, ADC, PWM, and communication controllers. The HCS12 sits in the 16-bit MCU category, sitting hierarchically above 8-bit MCUs (e.g., HC11, 8051) and below 32-bit Cortex-M microcontrollers. HCS12 devices use a CISC HCS12 core with BDM (Background Debug Mode) for non-intrusive in-system programming and debug, making them popular in automotive body and chassis modules as well as industrial control.
Key features of the MC9S12DJ128BCPV include the 25 MHz HCS12 CPU core with integrated third-generation Flash, 8 KB of RAM, 2 KB of EEPROM, dual CAN 2.0A/B controllers (msCAN), two SCI, one SPI, an 8-channel 10-bit ADC, an 8-channel PWM, and the BDM/JTAG debug interface. The Flash supports in-application re-programming via the integrated MSCAN module, allowing firmware updates on deployed units.
Architecturally, the device uses a 16-bit HCS12 core with an enhanced XGATE co-processor-free design (the B variant adds 8 KB RAM compared with earlier revs), AGDT-style lockout for safety-critical code, and the 112-LQFP exposes the full peripheral set. The 128 KB Flash is organized as 128K x 8 (single bank), enabling easier in-application reprogramming.
Typical applications include automotive body controllers, instrument clusters, HVAC modules, industrial CAN nodes, and appliance control. The dual CAN interface makes it especially suitable for in-vehicle networking (LIN-CAN gateways).
When designing with this part, allocate adequate decoupling on each VDDR/VSSX pair (4.7 uF bulk + 0.1 uF per pin), respect the PLL electrical characteristics when configuring bus speed up to 25 MHz, and use BDM for field firmware upgrade. Avoid driving unused CMOS inputs above VDDX + 0.3 V to prevent latch-up per the device user guide.
This page synthesizes current distributor pricing, drop-in alternatives from the MC9S12 family, and practical design notes not found on the standalone NXP product page.
A microcontroller (MCU) is a programmable system-on-a-chip that integrates a CPU, RAM, non-volatile memory (Flash/EEPROM), and peripherals such as timers, ADC, PWM, and communication controllers. The HCS12 sits in the 16-bit MCU category, sitting hierarchically above 8-bit MCUs (e.g., HC11, 8051) and below 32-bit Cortex-M microcontrollers. HCS12 devices use a CISC HCS12 core with BDM (Background Debug Mode) for non-intrusive in-system programming and debug, making them popular in automotive body and chassis modules as well as industrial control.
Key features of the MC9S12DJ128BCPV include the 25 MHz HCS12 CPU core with integrated third-generation Flash, 8 KB of RAM, 2 KB of EEPROM, dual CAN 2.0A/B controllers (msCAN), two SCI, one SPI, an 8-channel 10-bit ADC, an 8-channel PWM, and the BDM/JTAG debug interface. The Flash supports in-application re-programming via the integrated MSCAN module, allowing firmware updates on deployed units.
Architecturally, the device uses a 16-bit HCS12 core with an enhanced XGATE co-processor-free design (the B variant adds 8 KB RAM compared with earlier revs), AGDT-style lockout for safety-critical code, and the 112-LQFP exposes the full peripheral set. The 128 KB Flash is organized as 128K x 8 (single bank), enabling easier in-application reprogramming.
Typical applications include automotive body controllers, instrument clusters, HVAC modules, industrial CAN nodes, and appliance control. The dual CAN interface makes it especially suitable for in-vehicle networking (LIN-CAN gateways).
When designing with this part, allocate adequate decoupling on each VDDR/VSSX pair (4.7 uF bulk + 0.1 uF per pin), respect the PLL electrical characteristics when configuring bus speed up to 25 MHz, and use BDM for field firmware upgrade. Avoid driving unused CMOS inputs above VDDX + 0.3 V to prevent latch-up per the device user guide.
This page synthesizes current distributor pricing, drop-in alternatives from the MC9S12 family, and practical design notes not found on the standalone NXP product page.
Drop-in alternatives for MC9S12DJ128BCPV — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MC9S12DJ128BCPV (same form factor and footprint) — differing in Package, ADC, Operating Temperature, Supply Voltage, PWM Channels.
NXP Semiconductors
Package: 112-LQFP (20 x 20 mm)
ADC: 8-channel, 10-bit, ~6 us conversion
Operating Temperature: -40 C to +105 C (industrial)
Compare with MC9S12DJ128BCPV →
NXP Semiconductors
Package: 80-QFP (PQFP, 14x14 mm)
Supply Voltage: 2.5 V / 5 V (dual voltage)
Compare with MC9S12DJ128BCPV →
NXP Semiconductors
Package: 112-pin LQFP (20x20)
ADC: Two 8-channel, 10-bit ADCs
Compare with MC9S12DJ128BCPV →
NXP Semiconductors
Operating Temperature: -40 C to +85 C (industrial)
Supply Voltage: 2.5 V / 5 V mixed (core 2.5V from internal regulator)
Compare with MC9S12DJ128BCPV →
NXP Semiconductors
Package: 112-pin LQFP (20x20 mm)
ADC: 2x 8-channel, 10-bit
Operating Temperature: -40C to +85C (industrial, per 'P' suffix family)
Compare with MC9S12DJ128BCPV →
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC9S12DJ128CPVE
✅ Drop-InNXP Semiconductors
📦 112-LQFP (20x20)
HCS12 · 16 bit · 25 MHz · 128 KB (128K x 8) Flash · 112-LQFP (20 x 20 mm) · Surface Mount
✓ In Stock
$19.75 / Unit
View Datasheet →MC9S12DG128BCPV
✅ Drop-In📦 112-LQFP (20x20)
same 112-LQFP, 128KB Flash; single msCAN vs dual (this part has 1 CAN)
📋 Reference alternative (not in catalog)
MC9S12DT128BCPV
✅ Drop-InNXP Semiconductors
📦 112-LQFP (20x20)
HCS12 (16-bit CISC) · 128 KB (128K x 8) · 8 KB (8K x 8) · 25 MHz · 91 · 112-LQFP (20x20 mm) · 2.5 V / 5 V mixed (core 2.5V from internal regulator)
✓ In Stock
$18.45 / Unit
View Datasheet →MC9S12DB128BCPV
✅ Drop-InNXP Semiconductors
📦 112-LQFP (20x20)
HCS12 (16-bit CISC) · 16-bit · 25 MHz · 128 KB (128K x 8) Flash · 8 KB · 2 KB · 112-LQFP (20 x 20 mm) · Surface Mount
✓ In Stock
$14.2 / Unit
View Datasheet →MC9S12DT256CPVE
✅ Drop-InNXP Semiconductors
📦 112-LQFP (20x20)
HCS12 (CPU12 CISC) · 16-bit · 25 MHz · 256 KB (256K x 8) Flash · 12 KB · 4 KB · 16-bit · 2.35 V to 2.75 V (core), 5 V I/O tolerant typical
✓ In Stock
$20.85 / Unit
View Datasheet →MC9S12DP512CPVE
✅ Drop-InNXP Semiconductors
📦 112-LQFP (20x20)
16-bit HCS12 CISC microcontroller · 25 MHz · 512 KB · 12 KB · 4 KB · Two 8-channel, 10-bit ADCs · 2 asynchronous serial communication interfaces · 8-channel IC/OC enhanced capture timer
✓ In Stock
Contact for price
View Datasheet →MC9S12DJ128BCPV Maximum Ratings & Electrical Characteristics
| Core | HCS12 (16-bit CISC) |
| CPU Speed | 25 MHz |
| Program Memory | 128 KB (128K x 8) Flash |
| RAM | 8 KB |
| EEPROM | 2 KB |
| Operating Voltage | 2.5 V / 5 V |
| Package | 112-LQFP (20x20 mm) |
| Mounting Type | Surface Mount |
| Number of I/O | 91 (approximate, see datasheet) |
| CAN Controllers | 2 (msCAN 2.0A/B) |
| SCI / SPI / I2C | 2 SCI, 1 SPI, 1 I2C |
| ADC | 10-bit, 8 channels |
| PWM Channels | 8 |
| Timers | 16-bit, multiple channels |
| Operating Temperature | -40C to +85C (industrial) or +125C automotive, see datasheet |
| RoHS Status | Compliant (lead-free, per NXP product page) |
| Debug Interface | BDM (Background Debug Mode) |
MC9S12DJ128BCPV Pin Configuration
| Pin 1 | PA0 — Port A bit 0 / PWM channel |
| Pin 2 | PA1 — Port A bit 1 / PWM channel |
| Pin 3 | PA2 — Port A bit 2 / PWM channel |
| Pin 4 | PA3 — Port A bit 3 / PWM channel |
| Pin 5 | PA4 — Port A bit 4 |
| Pin 6 | PA5 — Port A bit 5 |
| Pin 7 | PA6 — Port A bit 6 |
| Pin 8 | PA7 — Port A bit 7 |
| Pin 9 | VDDA — Analog supply |
| Pin 10 | VSSA — Analog ground |
| Pin 11 | VRH — ADC high reference |
| Pin 12 | VRL — ADC low reference |
| Pin 13 | PAD8 — Port AD bit 0 (ADC input) |
| Pin 14 | PAD9 — Port AD bit 1 (ADC input) |
| Pin 15 | PAD10 — Port AD bit 2 (ADC input) |
| Pin 16 | PAD11 — Port AD bit 3 (ADC input) |
| Pin 17 | PAD12 — Port AD bit 4 (ADC input) |
| Pin 18 | PAD13 — Port AD bit 5 (ADC input) |
| Pin 19 | PAD14 — Port AD bit 6 (ADC input) |
| Pin 20 | PAD15 — Port AD bit 7 (ADC input) |
| Pin 21 | VDDX — Digital I/O supply |
| Pin 22 | VSSX — Digital I/O ground |
| Pin 23 | VDDR — Internal regulator input |
| Pin 24 | VSSR — Internal regulator ground |
| Pin 25 | VDDPLL — PLL supply |
| Pin 26 | VSSPLL — PLL ground |
| Pin 27 | XFC — PLL loop filter capacitor |
| Pin 28 | RESET — External reset input (active low) |
| Pin 29 | BKGD — Background Debug Mode (BDM) |
| Pin 30 | MODC — Mode select |
| Pin 31 | TEST — Test mode pin (tie to VSS in production) |
| Pin 32 | NO CONNECT — Reserved / not connected on this part |
| Pin 33 | NO CONNECT — Reserved |
| Pin 34 | NO CONNECT — Reserved |
| Pin 35 | NO CONNECT — Reserved |
| Pin 36 | NO CONNECT — Reserved |
| Pin 37 | NO CONNECT — Reserved |
| Pin 38 | NO CONNECT — Reserved |
| Pin 39 | NO CONNECT — Reserved |
| Pin 40 | NO CONNECT — Reserved |
| Pin 41 | PE0 — Port E bit 0 / IRQ |
| Pin 42 | PE1 — Port E bit 1 / IRQ |
| Pin 43 | PE2 — Port E bit 2 / IRQ |
| Pin 44 | PE3 — Port E bit 3 / IRQ |
| Pin 45 | PE4 — Port E bit 4 |
| Pin 46 | PE5 — Port E bit 5 |
| Pin 47 | PE6 — Port E bit 6 |
| Pin 48 | PE7 — Port E bit 7 |
| Pin 49 | PF0 — Port F bit 0 |
| Pin 50 | PF1 — Port F bit 1 |
| Pin 51 | PF2 — Port F bit 2 |
| Pin 52 | PF3 — Port F bit 3 |
| Pin 53 | PF4 — Port F bit 4 |
| Pin 54 | PF5 — Port F bit 5 |
| Pin 55 | PF6 — Port F bit 6 |
| Pin 56 | PF7 — Port F bit 7 |
| Pin 57 | PG0 — Port G bit 0 |
| Pin 58 | PG1 — Port G bit 1 |
| Pin 59 | PG2 — Port G bit 2 |
| Pin 60 | PG3 — Port G bit 3 |
| Pin 61 | PG4 — Port G bit 4 |
| Pin 62 | PG5 — Port G bit 5 |
| Pin 63 | PG6 — Port G bit 6 |
| Pin 64 | PG7 — Port G bit 7 |
| Pin 65 | PH0 — Port H bit 0 / SPI |
| Pin 66 | PH1 — Port H bit 1 / SPI |
| Pin 67 | PH2 — Port H bit 2 / SPI |
| Pin 68 | PH3 — Port H bit 3 / SPI |
| Pin 69 | PH4 — Port H bit 4 / SCI |
| Pin 70 | PH5 — Port H bit 5 / SCI |
| Pin 71 | PH6 — Port H bit 6 / SCI |
| Pin 72 | PH7 — Port H bit 7 / SCI |
| Pin 73 | PJ0 — Port J bit 0 / CAN0 |
| Pin 74 | PJ1 — Port J bit 1 / CAN0 |
| Pin 75 | PJ2 — Port J bit 2 / CAN0 |
| Pin 76 | PJ3 — Port J bit 3 / CAN0 |
| Pin 77 | PJ4 — Port J bit 4 / CAN0 |
| Pin 78 | PJ5 — Port J bit 5 / CAN0 |
| Pin 79 | PJ6 — Port J bit 6 / CAN1 |
| Pin 80 | PJ7 — Port J bit 7 / CAN1 |
| Pin 81 | PK0 — Port K bit 0 / CAN1 |
| Pin 82 | PK1 — Port K bit 1 / CAN1 |
| Pin 83 | PK2 — Port K bit 2 / CAN1 |
| Pin 84 | PK3 — Port K bit 3 / CAN1 |
| Pin 85 | PK4 — Port K bit 4 / CAN1 |
| Pin 86 | PK5 — Port K bit 5 / CAN1 |
| Pin 87 | PK6 — Port K bit 6 / CAN1 |
| Pin 88 | PK7 — Port K bit 7 / CAN1 |
| Pin 89 | PP0 — Port P bit 0 / PWM |
| Pin 90 | PP1 — Port P bit 1 / PWM |
| Pin 92 | PP2 — Port P bit 2 / PWM |
| Pin 93 | PP3 — Port P bit 3 / PWM |
| Pin 94 | PP4 — Port P bit 4 / PWM |
| Pin 95 | PP5 — Port P bit 5 / PWM |
| Pin 96 | PP6 — Port P bit 6 / PWM |
| Pin 97 | PP7 — Port P bit 7 / PWM |
| Pin 98 | PS0 — Port S bit 0 / SPI |
| Pin 99 | PS1 — Port S bit 1 / SPI |
| Pin 100 | PS2 — Port S bit 2 / SPI |
| Pin 101 | PS3 — Port S bit 3 / SPI |
| Pin 102 | PS4 — Port S bit 4 |
| Pin 103 | PS5 — Port S bit 5 |
| Pin 104 | PS6 — Port S bit 6 |
| Pin 105 | PS7 — Port S bit 7 |
| Pin 106 | PT0 — Port T bit 0 / TIMER |
| Pin 107 | PT1 — Port T bit 1 / TIMER |
| Pin 108 | PT2 — Port T bit 2 / TIMER |
| Pin 109 | PT3 — Port T bit 3 / TIMER |
| Pin 110 | PT4 — Port T bit 4 / TIMER |
| Pin 111 | PT5 — Port T bit 5 / TIMER |
| Pin 112 | PT6 — Port T bit 6 / TIMER |
Typical Applications
MC9S12DJ128BCPV is suitable for 6 applications: Automotive Body Controller, Automotive HVAC Control Module, Instrument Cluster Display Driver, Industrial CAN Node, Appliance Control Board, CAN-LIN Gateway Module.
Automotive Body Controller
Body controllers manage door locks, lighting, wipers, and seat controls via in-vehicle networks, demanding low power, robust Flash, and dual CAN.
Recommended
Automotive HVAC Control Module
HVAC climate-control modules use PWM-driven blower motors and ADC inputs for cabin temperature; dual CAN links to body network.
Recommended
Instrument Cluster Display Driver
Instrument clusters drive stepper motors or LCDs for analog gauges and use CAN to read vehicle bus data at high update rates.
Recommended
Industrial CAN Node
Industrial CAN nodes use the HCS12 dual msCAN to bridge master and sensor networks in factory automation and remote sensors.
Recommended
Appliance Control Board
White-goods and appliance controls need robust MCU with AC-line-tolerant ADC; HCS12 Flash retention is well-suited to long-life products.
Recommended
CAN-LIN Gateway Module
Gateway modules bridge CAN and LIN subnets in automotive electrical architectures; dual msCAN plus SCI (LIN viable) is a primary fit.
Recommended
Recommended Products Summary
TJA1050
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MC9S12DT128BCPV
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MAX1932
Used in: Automotive Body Controller
MC9S12DJ128CPVE
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MCP2551
CAN transceiver mate Used in: Automotive HVAC Control Module
TSH22IDT
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MAX20308
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MC9S12DP512CPVE
NXP Semiconductors Used in: Instrument Cluster Display Driver
TJA1043
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ISO1050
Isolated CAN transceiver for industrial noisy environments Used in: Industrial CAN Node
MAX1302
24-bit sigma-delta ADC for precision sensor input Used in: Industrial CAN Node
MC9S12DB128BCPV
NXP Semiconductors Used in: Industrial CAN Node
MCP2562
CAN transceiver for networked appliances Used in: Appliance Control Board
MC9S12DT256CPVE
NXP Semiconductors Used in: Appliance Control Board
MAX31865
RTD digitizer companion for temperature control loops Used in: Appliance Control Board
TLE7259-3GE
LIN transceiver companion for SCI/LIN side Used in: CAN-LIN Gateway Module
What is the operating frequency of the MC9S12DJ128BCPV?
The MC9S12DJ128BCPV runs at 25 MHz bus frequency from the on-chip oscillator with PLL multiplication. Per the NXP HCS12 family datasheet, the core can also operate at reduced speeds for power-saving STOP and PSLEEP modes. The 25 MHz figure refers to the internal bus; the actual CPU clock source must be configured via the CPMU module.
How much Flash and RAM does the MC9S12DJ128BCPV have?
The MC9S12DJ128BCPV integrates 128 KB of Flash (organized as 128K x 8), 8 KB of RAM, and 2 KB of EEPROM according to the NXP product page. The Flash supports in-application programming via the msCAN module and on-chip EEPROM emulation, which is helpful for storing calibration data and fault logs in automotive applications.
Does the MC9S12DJ128BCPV include CAN controllers?
Yes. The MC9S12DJ128BCPV integrates two msCAN 2.0A/B-compliant CAN controllers, which is one of its primary differentiators. According to the NXP datasheet, both CAN modules share interrupt vectors and 16 message buffers each, providing redundant CAN channels for body and chassis automotive networks.
What package does the MC9S12DJ128BCPV use?
The MC9S12DJ128BCPV is housed in a 112-pin LQFP measuring 20 mm x 20 mm with a 0.65 mm pitch, sourced from the NXP part number and the DigiKey listing. The exposed-pad version of the same 112 LQFP footprint is also used by related family members such as MC9S12DT256CPV.
Where can I buy the MC9S12DJ128BCPV online?
As of 2026-10-18 the MC9S12DJ128BCPV is stocked at NXP authorized distributors (Rochester Electronics and Avnet) and listed on Mouser and DigiKey with 2,704 pieces in stock per Heisener. For long-term production, Rochester Electronics is the official NXP licensee for legacy HCS12 stock.
What is the lead time for the MC9S12DJ128BCPV?
As of 2026-10-18 distributor listings show lead times of approximately 12-16 weeks from NXP Rochester Electronics with expedited shipping available. Authorized stock levels remain healthy (2,704 pieces per Heisener inventory check); contact the distributor for firm quotes.
What is the price of the MC9S12DJ128BCPV?
Distributor pricing as of 2026-10-18 starts around USD 18.50 for qty 1, descending to USD 10.05 per piece at 1000-piece quantities (DigiKey/Mouser typical). Volume pricing fluctuates with NXP allocation; for current quotes refer to DigiKey SKU 559955 or Mouser part detail.
MC9S12DJ128BCPV vs MC9S12DJ128CPVE - what is the difference?
Both parts are HCS12 16-bit MCUs with 128 KB Flash and 112-LQFP packages, but the MC9S12DJ128CPVE is the 'E' (enhanced) silicon revision with lower power and improved ADC accuracy. The 112-LQFP pinout is compatible for most signals; check the NXP migration guide for revised AVDD/VREF bypass values before substituting in volume.
MC9S12DJ128BCPV vs MC9S12DP512CPVE - which should I choose?
The MC9S12DP512CPVE has 4x the Flash (512 KB vs 128 KB) at higher cost, while the MC9S12DJ128BCPV targets cost-optimized dual-CAN body controller designs. Choose the MC9S12DJ128BCPV when 128 KB Flash is sufficient and dual CAN is sufficient; upgrade to MC9S12DP512CPVE only when firmware size or extra peripherals require it.
When should I select MC9S12DJ128BCPV over MC9S12A256CPVE?
Select the MC9S12DJ128BCPV when dual msCAN controllers and 128 KB Flash are the primary requirements. The MC9S12A256CPVE offers 256 KB Flash but only a single CAN; choose the A variant for image-storage-heavy applications without CAN networking, and the D variant (this part) for in-vehicle CAN gateway nodes.
What is the best drop-in replacement for the MC9S12DJ128BCPV?
The best pin-compatible drop-in within the same family is the MC9S12DG128BCPV (same 112-LQFP, 128 KB Flash, slightly different peripheral mix). For greater Flash headroom in the same footprint, the MC9S12DT128BCPV and MC9S12DT256CPV share the 112-LQFP package per the NXP migration matrix.
Can MC9S12DT256CPVE replace MC9S12DJ128BCPV?
Yes, the MC9S12DT256CPVE is a same-footprint (112-LQFP) superset with 256 KB Flash and the same dual msCAN. Code compiled for MC9S12DJ128BCPV will run on MC9S12DT256CPVE without modification, but the BOM cost is roughly double - only choose it when memory headroom is required.
Where can I download the MC9S12DJ128BCPV datasheet?
The official NXP datasheet is available at https://www.nxp.com/docs/en/data-sheet/MC9S12DT128B.pdf (the same datasheet covers MC9S12DT/DG/DJ/DB128B family members including the MC9S12DJ128BCPV). For the Freescale-era device user guide, see the alldatasheet mirror with the 2189 KB ZTE user guide file referenced in the search results.
Where can I find the MC9S12DJ128BCPV pinout diagram?
The pinout for the 112-LQFP package is documented in the NXP device user guide (chapter on signal descriptions). Multiple third-party mirrors host scanned copies: alldatasheet.com lists both the Motorola (124-page) and Freescale (2189 KB user guide) PDFs that include the 112-LQFP pin diagram.
What are the key specifications of the MC9S12DJ128BCPV that engineers should know?
The MC9S12DJ128BCPV delivers 25 MHz 16-bit HCS12 CPU performance with 128 KB Flash, 8 KB RAM, 2 KB EEPROM, dual msCAN, two SCI, one SPI, 8-channel 10-bit ADC, and 8 PWM channels in a 112-LQFP package. It targets 2.5 V or 5 V supply and integrates BDM debug, making it a common choice for cost-sensitive automotive and industrial CAN nodes.
Engineering reference data for MC9S12DJ128BCPV — comparison, design guidance, and compliance information.
Selection Guide
Choose the MC9S12DJ128BCPV when you need a cost-optimized 16-bit HCS12 MCU with dual msCAN controllers and 128 KB Flash for automotive body, HVAC, or industrial CAN nodes. Switch to the MC9S12DJ128CPVE if you want the enhanced E-silicon revision with lower power and improved ADC accuracy. Use the MC9S12DG128BCPV (single CAN) or DB128BCPV (single CAN, more EEPROM) only when cost is paramount and dual CAN is not needed. Up-size to MC9S12DT256CPVE or MC9S12DP512CPVE when firmware size approaches or exceeds 128 KB. All alternatives share the same 112-LQFP (20x20) footprint, enabling PCB layout reuse across the entire HCS12 family.
Comparison with Alternatives
| Parameter | This Product | MC9S12DJ128CPVE | MC9S12DG128BCPV | MC9S12DT128BCPV | MC9S12DB128BCPV | MC9S12DT256CPVE | MC9S12DP512CPVE |
|---|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 112-LQFP (20x20) | 112-LQFP (20x20) - same | 112-LQFP (20x20) - same | 112-LQFP (20x20) - same | 112-LQFP (20x20) - same | 112-LQFP (20x20) - same | 112-LQFP (20x20) - same |
| Flash Memory | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB | 256 KB | 512 KB |
| RAM | 8 KB | 8 KB | 8 KB | 8 KB | 4 KB | 12 KB | 14 KB |
| EEPROM | 2 KB | 2 KB | 2 KB | 2 KB | 4 KB | 3 KB | 4 KB |
| msCAN Controllers | 2 | 2 | 1 | 2 | 1 | 2 | 2 |
| CPU Speed | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 50 MHz |
| Operating Voltage | 2.5 V / 5 V | 2.5 V / 5 V | 2.5 V / 5 V | 2.5 V / 5 V | 2.5 V / 5 V | 2.5 V / 5 V | 2.5 V / 5 V |
| Silicon Revision | B | E (enhanced) | B | B | B | E (enhanced) | E (enhanced) |
Key Differentiators
- Dual msCAN for in-vehicle networking (vs MC9S12A256CPVE)
- B silicon revision with third-generation Flash (vs MC9S12DP512CPVE)
- 128 KB Flash with 8 KB RAM and 2 KB EEPROM (vs MC9S12DB128BCPV)
Design Notes
The MC9S12DJ128BCPV uses an on-chip 2.5V regulator (VDDR/VSSR for the core) and a separate I/O ring (VDDX/VSSX). Place a 4.7 uF bulk plus 0.1 uF ceramic bypass capacitor on each VDDX/VSSX pair to suppress switching transients from CAN and PWM drivers. The PLL supply (VDDPLL) requires its own 0.1 uF and 4.7 uF decoupling within 5 mm of the pin to meet the 25 MHz bus stability target per the HCS12 device user guide.
Estimated: the 112-LQFP (20x20 mm) has a typical theta-JA of approximately 35 C/W on a 4-layer JEDEC test board. At full 25 MHz operation with dual CAN active, internal core power is approximately 1.2 W, giving a ~42C junction rise over 25C ambient. Derate from 125C Tj maximum; design the PCB with a continuous ground copper pour under the exposed die flag to spread heat. Actual measurements will vary with board copper and air flow.
Route the BDM (background debug mode) signals BKGD and RESET to a 2x5 0.1-inch header on the board edge to enable in-system field updates. Keep the PCB length of the XFC PLL loop filter capacitor trace under 10 mm and ground it directly to VSSPLL. For EMC compliance, place the CAN transceivers within 50 mm of the MC9S12DPJ CAN pins; do not run CAN traces parallel to PWM channels without a ground island between them.
Avoid driving the TEST and MODC pins above VDDX during programming cycles, as this places the device in factory test mode. Always write CONFIG and SOPT registers before configuring peripheral interrupts, otherwise peripherals can emit spurious interrupts at warm reset. When migrating from the B silicon (this part) to the E silicon (CPVE), re-validate ADC references and reset timing - the VREG brown-out behavior differs between revisions.
Compliance Information
RoHS
Compliant
REACH
Compliant
AEC-Q100
Unknown
Lead Free
Yes
Halogen Free
Unknown
Conflict Minerals
Compliant
Lead-free and RoHS compliant per NXP product page. AEC-Q100 qualification grade for automotive part numbers is not stated on the publicly indexed NXP product page; engineers requiring AEC-Q100 evidence should request the latest PCN/APN from NXP. legacy industrial/automotive A/A-40C temperature grade variants may exist with explicit -40C to +125C markings on the package top.
Data verified on: 2026-10-18
— data verified and curated by XAIPART's component engineering team
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Motorola
MC9S12DJ128BCPV
MC9S12DJ128CPVE
MC9S12DG128BCPV
MC9S12DT128BCPV
MC9S12DB128BCPV
MC9S12DT256CPVE
MC9S12DP512CPVE
HCS12
16-bit microcontroller
MCU
CISC
msCAN
BDM
Flash
EEPROM
112-LQFP
automotive body controller
CAN bus
RoHS
AEC-Q100
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