MC9S12DJ128BCFU - 16-bit 128KB Flash HCS12 MCU | NXP
MPN: MC9S12DJ128BCFU ✗ Akhir HidupMC9S12DJ128BCFU Ringkasan
What is an HCS12 microcontroller? HCS12 (also called S12) is NXP's (formerly Motorola/Freescale) 16-bit CISC microcontroller family using a memory-mapped register architecture and a rich instruction set that evolved from the HC11. HCS12 devices sit within the broader hierarchy of automotive microcontrollers -> 16-bit microcontrollers -> microcontrollers (MCUs) -> embedded processors -> semiconductors. The DJ sub-family adds dual CAN modules and enhanced I/O for body control modules.
Key features include 59 general-purpose I/O pins, an enhanced capture timer with PWM channels, a watchdog timer, and a 25 MHz internal bus clock derived from an external oscillator. The 80-QFP package provides ample pin count for parallel buses and analog inputs while remaining surface-mountable. The Flash memory supports in-application reprogramming via the Background Debug Mode (BDM) interface, enabling firmware updates in the field without removing the device from the PCB.
Technical depth: the HCS12 core executes most instructions in a single bus cycle and includes a multiply-and-accumulate engine useful for basic signal-processing workloads. The integrated CAN 2.0ms controller modules (msCAN) implement the Bosch CAN specification and can operate autonomously from the CPU, offloading message buffering. The 2 KB EEPROM block supports byte-erase and byte-program operations suitable for storing calibration constants and fault logs.
Typical applications include automotive body control modules, HVAC controllers, instrument clusters, industrial CAN nodes, and factory automation gateways. The dual CAN ports allow the device to act as a gateway between two automotive networks, such as powertrain CAN and body CAN.
When designing with this device, ensure the BDM interface is brought out to a header for in-circuit debugging and field firmware updates. The 5V analog supply rail (VDDA) and 5V digital supply rail (VDDR) should be decoupled separately to prevent digital switching noise from coupling into ADC conversions.
This page synthesizes NXP datasheet specifications, distributor pricing, drop-in alternatives within the HCS12 family, and practical design notes not found on a single distributor page.
Alternatif penggantian untuk MC9S12DJ128BCFU — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
Variasi di dalam seri ini
Model-series yang sama yang kompatibel dengan penggantian MC9S12DJ128BCFU (sama faktor bentuk dan footprint) — berbeda di dalam ADC, Package, RoHS Status, Supply Voltage, Connectivity.
MC9S12DT128BCFU
✅ Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif referensi (tidak dalam katalog)
MC9S12DJ128BCPV
✅ Drop-In ⚠️ Spesifikasi Tidak DisahkanKontak untuk harga
Lihat Datasheet →MC9S12DJ128CFU
✅ Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif referensi (tidak dalam katalog)
MC9S12DG128BCFU
✅ Drop-In ⚠️ Spesifikasi Tidak DisahkanKontak untuk harga
Lihat Datasheet →MC9S12DP512BCFU
✅ Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif referensi (tidak dalam katalog)
S9S12G128F0MLFR
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
MC9S12DJ128BCFU Rating Maksimal & Karakteristik Listrik
| Core Processor | HCS12 |
| Core Size | 16-Bit |
| Core Architecture | CISC |
| Maximum Clock Speed | 25 MHz |
| Program Memory Size | 128 KB (128K x 8) Flash |
| RAM Size | 8 KB (8K x 8) |
| EEPROM Size | 2 KB (2K x 8) |
| Number of I/O Pins | 59 |
| Paket | 80-QFP (PQFP, 14x14 mm) |
| Tegangan Pemuat | 2.5 V / 5 V (dual voltage) |
| Connectivity | CANbus (2x msCAN), I2C, SCI, SPI |
| Peripherals | PWM, WDT, Enhanced Capture Timer |
| Automotive Qualification | AEC-Q100 |
| Tipe Mounting | Surface Mount |
Konfigurasi Pin MC9S12DJ128BCFU
| Pin produk 1 | VSSR — Digital ground reference for voltage regulator |
| Pin produk 2 | VDDR — External 5V supply for digital I/O and voltage regulator |
| Pin produk 3 | VDDX — External 5V (or 3.3V) supply for I/O drivers |
| Pin produk 4 | VSSX — I/O ground |
| Pin produk 5 | BKGD — Background Debug Mode pin |
| Pin produk 6 | MODC — Mode control (with PE0) |
| Pin produk 7 | RESET — External reset input, active low |
| Pin produk 8 | XTAL — Crystal oscillator input |
| Pin produk 9 | EXTAL — External clock input / crystal connection |
| Pin produk 10 | VSSPLL — PLL ground |
| Pin produk 11 | VDDPLL — PLL supply (2.5V) |
| Pin produk 12 | XFC — PLL loop filter capacitor |
| Pin produk 13 | PE0/MODB — Port E bit 0 / mode select B |
| Pin produk 14 | PE1 — Port E bit 1 |
| Pin produk 15 | PE2 — Port E bit 2 |
| Pin produk 16 | PE3 — Port E bit 3 |
| Pin produk 17 | PE4 — Port E bit 4 |
| Pin produk 18 | PE5 — Port E bit 5 |
| Pin produk 19 | PE6 — Port E bit 6 |
| Pin produk 20 | PE7 — Port E bit 7 |
| Pin produk 21 | PAD00 — Analog input ATD channel 0 / Port AD bit 0 |
| Pin produk 22 | PAD01 — Analog input ATD channel 1 |
| Pin produk 23 | PAD02 — Analog input ATD channel 2 |
| Pin produk 24 | PAD03 — Analog input ATD channel 3 |
| Pin produk 25 | PAD04 — Analog input ATD channel 4 |
| Pin produk 26 | PAD05 — Analog input ATD channel 5 |
| Pin produk 27 | PAD06 — Analog input ATD channel 6 |
| Pin produk 28 | PAD07 — Analog input ATD channel 7 |
| Pin produk 29 | VDDA — Analog supply (5V) |
| Pin produk 30 | VSSA — Analog ground |
| Pin produk 31 | VRL — ATD reference low |
| Pin produk 32 | VRH — ATD reference high |
| Pin produk 33 | PS0 — Port S bit 0 (PWM / timer channel) |
| Pin produk 34 | PS1 — Port S bit 1 |
| Pin produk 35 | PS2 — Port S bit 2 |
| Pin produk 36 | PS3 — Port S bit 3 |
| Pin produk 37 | PS4 — Port S bit 4 |
| Pin produk 38 | PS5 — Port S bit 5 |
| Pin produk 39 | PS6 — Port S bit 6 |
| Pin produk 40 | PS7 — Port S bit 7 |
| Pin produk 41 | PT0 — Port T bit 0 (IOC0) |
| Pin produk 42 | PT1 — Port T bit 1 (IOC1) |
| Pin produk 43 | PT2 — Port T bit 2 (IOC2) |
| Pin produk 44 | PT3 — Port T bit 3 (IOC3) |
| Pin produk 45 | PT4 — Port T bit 4 (IOC4) |
| Pin produk 46 | PT5 — Port T bit 5 (IOC5) |
| Pin produk 47 | PT6 — Port T bit 6 (IOC6) |
| Pin produk 48 | PT7 — Port T bit 7 (IOC7) |
| Pin produk 49 | PM0 — Port M bit 0 (CAN-A TX) |
| Pin produk 50 | PM1 — Port M bit 1 (CAN-A RX) |
| Pin produk 51 | PM2 — Port M bit 2 (CAN-B TX) |
| Pin produk 52 | PM3 — Port M bit 3 (CAN-B RX) |
| Pin produk 53 | PM4 — Port M bit 4 |
| Pin produk 54 | PM5 — Port M bit 5 |
| Pin produk 55 | PM6 — Port M bit 6 |
| Pin produk 56 | PM7 — Port M bit 7 |
| Pin produk 57 | PJ0 — Port J bit 0 (SCL / I2C SCL) |
| Pin produk 58 | PJ1 — Port J bit 1 (SDA / I2C SDA) |
| Pin produk 59 | PJ6 — Port J bit 6 (TXD0 / SCI0) |
| Pin produk 60 | PJ7 — Port J bit 7 (RXD0 / SCI0) |
| Pin produk 61 | PK0 — Port K bit 0 |
| Pin produk 62 | PK1 — Port K bit 1 |
| Pin produk 63 | PK2 — Port K bit 2 |
| Pin produk 64 | PK3 — Port K bit 3 |
| Pin produk 65 | PK4 — Port K bit 4 |
| Pin produk 66 | PK5 — Port K bit 5 |
| Pin produk 67 | PK6 — Port K bit 6 |
| Pin produk 68 | PK7 — Port K bit 7 |
| Pin produk 69 | PA0 — Port A bit 0 (PWM0) |
| Pin produk 70 | PA1 — Port A bit 1 (PWM1) |
| Pin produk 71 | PA2 — Port A bit 2 (PWM2) |
| Pin produk 72 | PA3 — Port A bit 3 (PWM3) |
| Pin produk 73 | PA4 — Port A bit 4 (PWM4) |
| Pin produk 74 | PA5 — Port A bit 5 (PWM5) |
| Pin produk 75 | PA6 — Port A bit 6 (PWM6) |
| Pin produk 76 | PA7 — Port A bit 7 (PWM7) |
| Pin produk 77 | PB0 — Port B bit 0 (OC0) |
| Pin produk 78 | PB1 — Port B bit 1 (OC1) |
| Pin produk 79 | PB2 — Port B bit 2 (OC2) |
| Pin produk 80 | PB3 — Port B bit 3 (OC3) |
Aplikasi Umum
MC9S12DJ128BCFU cocok untuk 7 aplikasis: Automotive Body Control Module, CAN Gateway / Network Bridge, HVAC Control Module, Industrial CANopen Node, Instrument Cluster Display Controller, Battery Management Slave Module, Motor Controller (BLDC / PMSM FOC).
Automotive Body Control Module
The MC9S12DJ128BCFU is a core MCU for automotive body control modules (BCMs) that manage lighting, door locks, wipers, and accessory loads. Its dual msCAN 2.0 controllers allow the BCM to communicate on both the body-CAN (typically 125 kbps) and chassis-CAN (500 kbps) segments simultaneously, bridging messages between networks. With 128 KB Flash the device stores BCM application firmware plus diagnostic routines; the 8 KB RAM accommodates CAN mailboxes, switch-debounce buffers, and PWM channel state. The 59 GPIO pins drive LED drivers, relay coils, and switch inputs. AEC-Q100 qualification allows deployment under the hood or in door modules where temperatures reach +85 C.
Direkomendasikan
CAN Gateway / Network Bridge
The two independent msCAN modules in the MC9S12DJ128BCFU make it ideal as a gateway MCU bridging two CAN networks - for example a powertrain CAN (1 Mbps) segment and a body CAN (125 kbps) segment inside a vehicle electrical architecture. The HCS12 core filters and forwards messages between buses while running higher-layer diagnostics. With 25 MHz bus clock, message routing latency stays below 200 us even at peak bus load. Flash supports OTA gateway-table updates via UDS over CAN, and the 2 KB EEPROM stores the network configuration persistently across power cycles.
Direkomendasikan
HVAC Control Module
HVAC control modules use the MC4AT95 16-bit ADC block to read cabin temperature sensors, blend-door position feedback, and coolant temperatures. The MC9S12DJ128BCFU's enhanced capture timer drives PWM outputs that command the blower motor speed and blend-door actuators with 8-bit resolution. Flash stores HVAC calibration maps; the 2 KB EEPROM retains user setpoints (driver temperature, fan speed) after ignition off. The dual msCAN lets the HVAC module participate in body-CAN diagnostics and receive setpoint commands from the infotainment cluster, while the SCI/UART debugs the unit during factory end-of-line programming.
Direkomendasikan
Industrial CANopen Node
In factory automation the MC9S12DJ128BCFU operates as a CANopen slave node controlling valve manifolds, I/O blocks, or motor starters. The msCAN controller implements the CANopen CiA 301 protocol stack with object dictionaries stored in the 2 KB EEPROM. The 25 MHz HCS12 core handles SDO/PDO processing with sub-millisecond cycle times. The 80-QFP package's 59 GPIO pins interface to local digital I/O, encoder feedback, and 24V opto-isolated inputs. AEC-Q100 qualification is acceptable for industrial environments and provides extra reliability margin over commercial-only parts.
Direkomendasikan
Instrument Cluster Display Controller
Instrument clusters use the MC9S12DJ128BCFU to drive stepper-motor gauge pointers and segment-LCD displays via SPI. The enhanced capture timer generates the precise step pulses for X-by-wire gauges, while the SPI bus streams graphics data to an external LCD driver. The 128 KB Flash stores multiple gauge-face bitmaps and language fonts; 8 KB RAM buffers the active screen. The single msCAN pulls vehicle speed, RPM, and fuel-level messages from the body-CAN bus. AEC-Q100 qualification suits the +85 C cabin environment behind the dashboard.
Direkomendasikan
Battery Management Slave Module
Battery management systems (BMS) for traction packs use the MC9S12DJ128BCFU as a slave controller that monitors individual cell voltages and temperatures via the on-chip ATD converter and SPI-attached AFE chips. The dual msCAN ports allow the BMS slave to communicate on the internal battery CAN bus while also exposing diagnostics on the vehicle body CAN. The 2 KB EEPROM stores cell-balancing parameters and lifetime cycle counts; 128 KB Flash holds the safety firmware. AEC-Q100 plus 5V analog capability simplify cell-voltage measurements in 12V/24V battery packs.
Direkomendasikan
Motor Controller (BLDC / PMSM FOC)
Low-voltage motor controllers for fans, pumps, and small traction motors run sensorless FOC on the MC9S12DJ128BCFU. The enhanced capture timer samples back-EMF via the ATD converter and generates the 6-PWM signals for the three-phase inverter. Flash holds the FOC lookup tables and PI-controller constants; 8 KB RAM stores Park/Clarke transform intermediate values. The msCAN bus receives torque commands from the vehicle controller. 25 MHz is sufficient for FOC loops at PWM frequencies up to 20 kHz on a 50 us control period.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk MC9S12DJ128BCFU — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | MC9S12DT128BCFU | MC9S12DJ128BCPV | MC9S12DJ128CFU | MC9S12DG128BCFU | MC9S12DP512BCFU |
|---|---|---|---|---|---|---|
| Package | 80-QFP (14x14 mm) | 80-QFP (14x14) - same | 80-QFP (14x14) - same | 80-QFP (14x14) - same | 80-QFP (14x14) - same | 80-QFP (14x14) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core | HCS12, 16-bit, 25 MHz | HCS12, 16-bit, 25 MHz | HCS12, 16-bit, 25 MHz | HCS12, 16-bit, 25 MHz | HCS12, 16-bit, 25 MHz | HCS12, 16-bit, 25 MHz |
| Flash Memory | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB | 512 KB |
| RAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 32 KB |
| EEPROM | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 4 KB |
| CAN Controllers | 2x msCAN 2.0 | 2x msCAN 2.0 | 2x msCAN 2.0 | 2x msCAN 2.0 | 1x msCAN + extra SCI | 2x msCAN 2.0 |
| AEC-Q100 Qualified | Yes | Yes | No (commercial/industrial grade) | No (commercial grade) | Yes | Yes |
Diferensiator Kunci
- Dual msCAN 2.0 controllers in a single MCU (vsMC9S12DG128BCFU)
- On-chip 2 KB EEPROM for persistent data storage (vsMC9S12DT128BCFU)
- AEC-Q100 automotive qualification on the BCFU suffix (vsMC9S12DJ128CFU)
Catatan Desain
The MC9S12DJ128BCFU requires a dual-rail supply: 5V on VDDR/VDDX/VDDA plus an internal 2.5V core regulator derived from VDDR. Decouple each VDD pin with a 100 nF ceramic plus 10 uF bulk within 5 mm of the pin. Tie VDDX and VDDR together if a single 5V rail is acceptable; otherwise route VDDA through a ferrite bead to isolate analog noise from digital switching. The internal voltage regulator requires a 1 uF low-ESR capacitor on the VDDPLL pin and a 100 nF on each VDD pin.
Do not leave the BKGD (Background Debug Mode) pin floating - tie it to VDDX through a 10 kohm pull-up or directly driven by the BDM tool. A floating BKGD can cause spurious reset events during power-up. The RESET pin is bidirectional; provide an external 4.7 kohm pull-up to VDDX plus a 1 nF capacitor to VSSX to debounce mechanical reset buttons. The XFC pin is the PLL filter node and must NOT be loaded with anything except the specified loop-filter capacitor (typically 5.6 nF).
Route the msCAN TX/RX pairs (PM0/PM1 and PM2/PM3) as 50 ohm differential microstrips with length matching within 5 mm to the external CAN transceiver (e.g., TJA1042). Place the transceiver within 50 mm of the MCU and keep the bus-side traces away from switching signals. The 80-QFP package's 0.65 mm pitch requires at least 4-layer PCB with 0.2 mm via-in-pad if BGA-style breakout is used, or 0.4 mm through-hole vias for standard breakout. Provide a copper pour under the entire package and stitch with thermal vias to ground for thermal dissipation.
The external crystal (XTAL/EXTAL) should be a fundamental-mode AT-cut type with load capacitance matched to the on-chip oscillator (typically 16-20 pF). Place the crystal within 5 mm of the MCU, route the traces over a continuous ground plane, and surround the crystal with a guard ring tied to ground. Avoid routing noisy signals (PWM, CAN) within 3 mm of the crystal traces. If an external clock is used, drive EXTAL with a CMOS-level source and leave XTAL floating.
Informasi Konformitas
AEC-Q100 qualification confirmed via NXP product documentation. RoHS/REACH/lead-free status not stated in the verified web data - mark as 'unknown' and consult NXP compliance letter before PCBA assembly.