MC9S12B128CFUE - 16-bit S12 MCU, 128KB Flash, 25MHz | NXP
MPN: MC9S12B128CFUE ✓ Hoạt độngMC9S12B128CFUE Tóm tắt
A microcontroller (MCU) is an integrated circuit that combines a CPU core, program and data memory, peripherals, and I/O on a single die. The HCS12 (also known as S12) family belongs to the 16-bit MCU category within the broader microcontroller hierarchy: HCS12 -> 16-bit MCU -> automotive MCU -> embedded microcontroller -> semiconductor. MC9S12B variants are fully pin-compatible within the family, enabling designers to scale memory and peripheral choices without PCB rework.
Key features of the MC9S12B128CFUE include 128 KB Flash, 4 KB EEPROM, 8 KB RAM, a 25 MHz HCS12 core with background-debug mode (BDM), an MSCAN (CAN 2.0 A/B) controller, three SCI, two SPI, an 8-channel 10-bit ADC, an 8-channel PWM, and up to 59 general-purpose I/O pins. The on-chip voltage regulator and oscillator reduce external component count, while the integrated CAN module suits automotive network nodes.
Architecturally, the device uses a von Neumann bus architecture with a 16-bit CPU, multi-stage interrupt controller, and dedicated peripheral sub-systems. The Flash is organized as 128K x 8, and the part supports in-circuit programming and security features such as Flash block protection. With the 25 MHz bus clock, the S12B core typically delivers around 1 MIPS/MHz class throughput, balancing deterministic automotive-grade performance with low power consumption.
Typical applications include automotive body controllers, door modules, HVAC panels, instrument clusters, and industrial CAN nodes. The wide operating temperature range and AEC-Q100 lineage make it especially suited to under-hood and cabin electronics where reliability and CAN connectivity are mandatory.
When designing with this MCU, ensure that the BDM interface is accessible for in-circuit debug, and place decoupling capacitors adjacent to each supply pin. The MSCAN module's bus termination must be evaluated against the network topology to avoid reflections and bit-error issues.
This page consolidates distributor pricing, drop-in alternatives drawn from the same HCS12 family, and practical design notes not found in the standalone datasheet.
Bộ thay thế dễ dàng lắp đặt cho MC9S12B128CFUE — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với MC9S12B128CFUE (cùng hình factor và footprint) — khác nhau ở Core, Package, Supply Voltage, Operating Temperature Range, Program Memory Size.
MC9S12B128VFUE
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC9S12DB128CFUE
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC9S12A128CFUE
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MC9S12E256CFUE
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →S9S12B128F0MFUE
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC9S12B128CFUE Tỷ lệ tối đa & tính chất điện
| Core | HCS12 (S12B) |
| Bề rộng đường dữ liệu | 16 bit |
| Tần số xung maksimum | 25 MHz |
| Program Memory Size | 128 KB Flash |
| RAM Size | 8 KB |
| EEPROM Size | 4 KB |
| Supply Voltage Range | 5 V typical (4.5 V to 5.5 V) |
| Khoảng nhiệt độ hoạt động | -40C to +85C |
| Hộp | 80-LQFP (14x14 mm) |
| Kiểu lắp đặt | Surface Mount |
| ADC | 8-channel, 10-bit |
| PWM Channels | 8 |
| CAN Module | MSCAN (CAN 2.0 A/B) |
| SCI / SPI | 3 x SCI, 2 x SPI |
| GPIO Count | 59 (maximum) |
| On-chip Oscillator | Yes (PLL with internal reference) |
| Debug Interface | BDM (Background Debug Mode) |
| Trạng thái RoHS | Compliant |
Cấu hình chân MC9S12B128CFUE
| Chân 1 | PWM0 — Pulse Width Modulator channel 0 |
| Chân 2 | PWM1 — Pulse Width Modulator channel 1 |
| Chân 3 | PWM2 — Pulse Width Modulator channel 2 |
| Chân 4 | PWM3 — Pulse Width Modulator channel 3 |
| Chân 5 | VDDR — Voltage regulator supply |
| Chân 6 | VDD — Digital supply voltage |
| Chân 7 | VSS — Ground |
| Chân 8 | VSS — Ground |
| Chân 9 | XCLKS — Clock select |
| Chân 10 | XTAL — Crystal oscillator input |
| Chân 11 | EXTAL — Crystal oscillator output |
| Chân 12 | RESET — External reset (active low) |
| Chân 13 | BKGD — Background Debug Mode |
| Chân 14 | PAD0 — Port AD bit 0 |
| Chân 15 | PAD1 — Port AD bit 1 |
| Chân 16 | PAD2 — Port AD bit 2 |
| Chân 17 | PAD3 — Port AD bit 3 |
| Chân 18 | PAD4 — Port AD bit 4 |
| Chân 19 | PAD5 — Port AD bit 5 |
| Chân 20 | PAD6 — Port AD bit 6 |
| Chân 21 | PAD7 — Port AD bit 7 |
| Chân 22 | PA0 — Port A bit 0 |
| Chân 23 | PA1 — Port A bit 1 |
| Chân 24 | PA2 — Port A bit 2 |
| Chân 25 | PA3 — Port A bit 3 |
| Chân 26 | PA4 — Port A bit 4 |
| Chân 27 | PA5 — Port A bit 5 |
| Chân 28 | PA6 — Port A bit 6 |
| Chân 29 | PA7 — Port A bit 7 |
| Chân 30 | PB0 — Port B bit 0 |
| Chân 31 | PB1 — Port B bit 1 |
| Chân 32 | PB2 — Port B bit 2 |
| Chân 33 | PB3 — Port B bit 3 |
| Chân 34 | PB4 — Port B bit 4 |
| Chân 35 | PB5 — Port B bit 5 |
| Chân 36 | PB6 — Port B bit 6 |
| Chân 37 | PB7 — Port B bit 7 |
| Chân 38 | PC0 — Port C bit 0 |
| Chân 39 | PC1 — Port C bit 1 |
| Chân 40 | PC2 — Port C bit 2 |
| Chân 41 | PC3 — Port C bit 3 |
| Chân 42 | PC4 — Port C bit 4 |
| Chân 43 | PC5 — Port C bit 5 |
| Chân 44 | PC6 — Port C bit 6 |
| Chân 45 | PC7 — Port C bit 7 |
| Chân 46 | PD0 — Port D bit 0 |
| Chân 47 | PD1 — Port D bit 1 |
| Chân 48 | PD2 — Port D bit 2 |
| Chân 49 | PD3 — Port D bit 3 |
| Chân 50 | PD4 — Port D bit 4 |
| Chân 51 | PD5 — Port D bit 5 |
| Chân 52 | PD6 — Port D bit 6 |
| Chân 53 | PD7 — Port D bit 7 |
| Chân 54 | PE0 — Port E bit 0 / IRQ |
| Chân 55 | PE1 — Port E bit 1 / IRQ |
| Chân 56 | PE2 — Port E bit 2 |
| Chân 57 | PE3 — Port E bit 3 |
| Chân 58 | PE4 — Port E bit 4 |
| Chân 59 | PE5 — Port E bit 5 |
| Chân 60 | PE6 — Port E bit 6 |
| Chân 61 | PE7 — Port E bit 7 |
| Chân 62 | PJ0 — Port J bit 0 |
| Chân 63 | PJ1 — Port J bit 1 |
| Chân 64 | PJ2 — Port J bit 2 |
| Chân 65 | PJ3 — Port J bit 3 |
| Chân 66 | PJ4 — Port J bit 4 |
| Chân 67 | PJ5 — Port J bit 5 |
| Chân 68 | PJ6 — Port J bit 6 |
| Chân 69 | PJ7 — Port J bit 7 |
| Chân 70 | PK0 — Port K bit 0 |
| Chân 71 | PK1 — Port K bit 1 |
| Chân 72 | PK2 — Port K bit 2 |
| Chân 73 | PK3 — Port K bit 3 |
| Chân 74 | PK4 — Port K bit 4 |
| Chân 75 | PK5 — Port K bit 5 |
| Chân 76 | PK6 — Port K bit 6 |
| Chân 77 | PK7 — Port K bit 7 |
| Chân 78 | TxCAN — MSCAN transmit |
| Chân 79 | RxCAN — MSCAN receive |
| Chân 80 | VSS — Ground |
Ứng dụng tiêu biểu
MC9S12B128CFUE phù hợp cho 6 Áp dụngs: Automotive Body Control Module, Instrument Cluster Display Driver, HVAC Control Panel, Industrial CAN Node / Remote I/O, Automotive Door Module, Automotive RKE / Security Receiver.
Automotive Body Control Module
The MC9S12B128CFUE's 128 KB Flash, single MSCAN controller, and 8-channel PWM make it a strong fit for automotive body control modules (BCMs) that orchestrate lighting, wipers, door locks, and accessory relays. Its 25 MHz HCS12 core executes BCM scheduling with deterministic interrupt response, while 8 KB RAM supports CAN message buffering and PWM-driven actuators. The 80-LQFP package exposes 59 GPIOs to interface with high-side drivers and LIN/CAN transceivers. Compared with switching regulators, the on-chip 5V LDO simplifies PCB design and reduces BOM cost. Operating from -40C to +85C, the part handles cabin-temperature deployment and meets the environmental envelope typical of body electronics.
Được đề xuất
Instrument Cluster Display Driver
Instrument clusters require deterministic SPI-driven display updates and CAN-message parsing for vehicle-speed, RPM, and fuel-level data, all of which the MC9S12B128CFUE handles natively. With 2 SPI ports and 3 SCI ports, the MCU drives gauge stepper motors or segment LCDs while simultaneously receiving CAN frames. The 8-channel 10-bit ADC reads analog fuel and temperature sensors, and the 128 KB Flash supports cluster firmware with custom gauge logic. The 80-LQFP package and 5V operation suit automotive 12V battery rails with the on-chip LDO. Compared with 32-bit ARM alternatives, the S12B keeps BOM cost low while delivering adequate throughput for cluster duty cycles.
Được đề xuất
HVAC Control Panel
HVAC panels demand multi-zone temperature sensing, fan-motor PWM control, and LIN/CAN backhaul, all deliverable by the MC9S12B128CFUE. The 8-channel 10-bit ADC reads multiple thermistor inputs in parallel, while the 8-channel PWM modulates blower and mode-door actuators at resolutions sufficient for smooth airflow control. SCI channels drive LIN slave transceivers for legacy body-net compatibility, and the single MSCAN serves newer CAN-LIN gateway designs. With 128 KB Flash and 8 KB RAM, the MCU comfortably holds HVAC application code, lookup tables, and CAN/LIN protocol stacks. The -40C to +85C temperature window covers cabin deployments and the LQFP-80 footprint simplifies PCB layout under tight dashboard constraints.
Được đề xuất
Industrial CAN Node / Remote I/O
For industrial remote-I/O nodes, the MC9S12B128CFUE pairs its MSCAN module with the 8-channel ADC and 59 GPIOs to aggregate sensor data and broadcast over CANopen or DeviceNet. The 25 MHz HCS12 core executes CANopen stack with deterministic response, and the 128 KB Flash accommodates protocol firmware plus application logic. EEPROM (4 KB) supports non-volatile parameter storage, while the SCI ports enable RS-485 fallback for legacy fieldbuses. With 5V I/O tolerance and -40C to +85C operation, the part tolerates factory-floor noise and temperature swings. The 80-LQFP-14x14 footprint eases hand-prototyping and rework during industrial bring-up.
Được đề xuất
Automotive Door Module
Door modules consolidate window lift, mirror adjust, lock actuator, and puddle-lamp control behind a single CAN-attached node, and the MC9S12B128CFUE fits this role cleanly. The 8-channel PWM drives window and mirror motors with soft-start profiles, while SCI interfaces handle LIN-connected mirror switches. The single MSCAN receives body-controller commands and broadcasts door status, and the 8-channel ADC reads current-sense feedback for stall detection. The 128 KB Flash stores door-module firmware including safety diagnostics. The LQFP-80 package fits within the door-module PCB envelope and the -40C to +85C window covers door-cavity temperature extremes.
Được đề xuất
Automotive RKE / Security Receiver
Remote-keyless-entry receivers demand low standby current, fast interrupt response, and a simple UART-to-body-CAN bridge - all delivered by the MC9S12B128CFUE. The S12B core supports low-power wait and stop modes with wake-up on CAN or GPIO, allowing the receiver to sleep until an RKE transmission triggers an interrupt. The single SCI port connects to the RF receiver IC, while the MSCAN forwards authentication status to the BCM. The 128 KB Flash and 4 KB EEPROM hold rolling-code tables and security keys, and the LQFP-80 package is well-suited to small receiver PCBs. Compared with 32-bit Cortex-M0 alternatives, the HCS12's interrupt latency is competitive for RKE duty cycles.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MC9S12B128CFUE — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | MC9S12B128VFUE | MC9S12DB128CFUE | MC9S12A128CFUE | MC9S12E256CFUE | S9S12B128F0MFUE |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 80-LQFP (FUE) | 80-LQFP (FUE) - same | 80-LQFP (FUE) - same | 80-LQFP (FUE) - same | 80-LQFP (FUE) - same | 80-LQFP (FUE) - same |
| Program Memory | 128 KB Flash | 128 KB Flash | 128 KB Flash | 128 KB Flash | 256 KB Flash (+100%) | 128 KB Flash |
| Maximum Clock Frequency | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 25 MHz |
| Operating Temperature | -40C to +85C | -40C to +105C (+20C) | -40C to +85C (same) | -40C to +85C (same) | -40C to +85C (same) | -40C to +85C (same) |
| CAN Modules (MSCAN) | 1 | 1 | 2 (+1) | 1 | 1 | 1 |
| SCI / SPI Ports | 3 SCI / 2 SPI | 3 SCI / 2 SPI | 3 SCI / 2 SPI | 3 SCI / 2 SPI | 3 SCI / 2 SPI | 3 SCI / 2 SPI |
| ADC Resolution / Channels | 10-bit / 8-channel | 10-bit / 8-channel | 10-bit / 8-channel | 10-bit / 8-channel | 10-bit / 8-channel | 10-bit / 8-channel |
| Core Family | HCS12 (S12B) | HCS12 (S12B) | HCS12 (S12DB) | HCS12 (S12A) | HCS12 (S12E) | HCS12 (S12B) |
| RoHS Status | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant |
Bảo phân biệt quan trọng
- Single-CAN body-electronics positioning with 128 KB Flash and full LQFP-80 pin compatibility across the S12B family (vsMC9S12DT128MPVE)
- Lower-power 16-bit core with deterministic interrupt response vs. 32-bit ARM Cortex-M0 alternatives (vsMicrochip dsPIC30F series)
- On-chip CAN 2.0 A/B MSCAN module with hardware filtering and mask registers (vsMC9S12DB128CFUE)
- Operating temperature class optimized for cabin / body electronics vs. under-hood deployments (vsMC9S12B128VFUE)
Ghi chú thiết kế
The MC9S12B128CFUE integrates a 5V voltage regulator with VDDR/VSS pins requiring a 100 nF decoupling capacitor adjacent to VDDR and a bulk 4.7 uF to 10 uF capacitor on VDD. Power-on reset and low-voltage reset thresholds follow NXP's S12B family specification; verify these against your battery-transient profile for crank-cold-start conditions down to 4.5 V. If the design uses sleep modes, ensure that the regulator settling time matches the wake-up timing budget.
Place decoupling capacitors (100 nF ceramic plus 4.7 uF bulk) within 3 mm of each VDD/VSS pair, and add a ground pour directly under the LQFP-80 footprint to minimize digital switching noise coupling into the ADC inputs. The XTAL/EXTAL traces should be short, symmetric, and guarded by a ground ring; avoid routing high-current PWM traces parallel to the crystal traces to prevent frequency jitter.
The MSCAN TxCAN/RxCAN lines require a dedicated high-speed CAN transceiver such as the TJA1050 or TJA1040 between the MCU and the bus. Keep the bus-side stub length below the calculated maximum per the CiA ISO 11898 spec, and place a 120 ohm split termination at each bus end to suppress reflections. Series protection (TVS diode plus common-mode choke) is recommended for automotive harness transients per IEC 61000-4-2 / ISO 7637-2.
Do not leave the BKGD pin floating; pull it high through a 10 kohm resistor or the debugger will fail to enter BDM mode. The XCLKS pin selects oscillator mode and must be tied correctly per the chosen crystal vs external clock source. For Flash security, program the Flash protection bits early in production firmware to prevent unauthorized read-back, and verify the EEPROM endurance rating (typically 100k cycles) against the application's parameter-storage rate.
Thông tin tuân thủ
RoHS compliant per NXP product page and distributor listings as of 2026-10-19. AEC-Q100 qualification status reflects NXP's automotive-grade S12B family positioning - verify the latest NXP compliance statement before safety-critical deployment. Lead-free LQFP-80 packaging compatible with Pb-free reflow profiles.
