MC9S12XD256MAG - 16-Bit HCS12X 80MHz 256KB Flash MCU | NXP
MPN: MC9S12XD256MAG ✗ پایان تولیدMC9S12XD256MAG نمای کلی
Background: HCS12X is NXP's (formerly Freescale) 16-bit microcontroller architecture, evolved from the HCS12 CISC core. It targets automotive body, chassis, and powertrain applications as well as industrial control. The S12XD sub-family adds the XGATE coprocessor for high-bandwidth peripheral servicing and deterministic interrupt response, and shares its peripheral set, programmer's model, and interrupt stacking with HCS12, simplifying migration of legacy HCS12 code bases.
Key features of the MC9S12XD256MAG include 256 KB (256K x 8) of Flash program memory, 12 KB of RAM, 4 KB of EEPROM, an 80 MHz bus-rated CPU with a 25 MHz bus clock typical, dual CAN (msCAN) controllers, multiple SCI/SPI/PWM/IIC peripherals, an 8-channel 10-bit ADC, and an operating voltage range of 2.5 V/5 V that suits automotive 5 V rails.
Technically, the HCS12X core pairs the main CPU with the XGATE peripheral coprocessor for time-critical I/O offload, allowing interrupt latency below 1 us in many configurations. The 144-LQFP package exposes up to four 8-bit Ports (PJ-PK and PT) plus additional PAD/ADDR/DATA buses that allow external memory expansion.
Typical applications include automotive body control modules, industrial PLCs, HVAC controllers, sensor fusion front-ends, and CAN gateway nodes where the dual msCAN modules and large Flash footprint are decisive.
Design consideration: PCB designers should leave generous copper pour under the exposed thermal pad of the 144-LQFP and keep the analog AVREF/VDDA traces short and decoupled to maximise ADC performance; the HCS12X background-debug-mode (BDM) interface should remain accessible for in-circuit debug.
This page synthesises distributor pricing, same-family LQFP alternatives, and practical design notes not collected on the manufacturer product page.
جایگزین‌های drop-in برای MC9S12XD256MAG — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای MC9S12XD256MAG (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در ADC, Package, Supply Voltage, Core, Operating Temperature.
MC9S12XDT256CAG
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←MC9S12XDT256MAG
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←MC9S12XDP512MAG
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←MC9S12XDP512CAG
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
MC9S12XEQ512MAG
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←MC9S12XA256MAG
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
MC9S12XD256MAG حداکثر مقادیر مجاز و مشخصات الکتریکی
| Core Architecture | HCS12X (S12XD) |
| عرض گذرگاه داده | 16-bit |
| CPU Clock (max) | 80 MHz |
| Program Memory | 256 KB Flash (256K x 8) |
| RAM | 12 KB |
| EEPROM | 4 KB |
| ولتاژ تغذیه | 2.5 V / 5 V |
| CAN Controllers | 2 x msCAN |
| SCI | Up to 2 |
| SPI | Up to 1 |
| ADC | 8-channel, 10-bit |
| PWM Channels | 8 (standard S12 PWM) |
| XGATE Coprocessor | Yes |
| بسته‌بندی | 144-LQFP (20 x 20 mm) |
| دمای کاری | -40C to +125C (Automotive grade) |
| نوع نصب | Surface Mount |
| وضعیت RoHS | Compliant |
پیکربندی پین MC9S12XD256MAG
| پین 1 | PE1 — Port E bit 1 (general-purpose I/O, IRQ) |
| پین 2 | PE0 — Port E bit 0 (general-purpose I/O, XIRQ) |
| پین 3 | BKGD — Background Debug Mode |
| پین 4 | RESET — External reset input (active low) |
| پین 5 | VDDR |
| پین 6 | VDD |
| پین 7 | VSS |
| پین 8 | VDDPLL — PLL supply |
| پین 9 | VSSPLL — PLL ground |
| پین 10 | TEST — Test mode (tie to VSS for normal operation) |
| پین 11 | XCLKS — Clock select (configuration) |
| پین 12 | EXTAL — External clock/crystal input |
| پین 13 | XTAL — Crystal output |
| پین 14 | PAD00 — External address/data bus bit 0 |
| پین 15 | PAD01 — External address/data bus bit 1 |
| پین 16 | PAD02 — External address/data bus bit 2 |
| پین 17 | PAD03 — External address/data bus bit 3 |
| پین 18 | PAD04 — External address/data bus bit 4 |
| پین 19 | PAD05 — External address/data bus bit 5 |
| پین 20 | PAD06 — External address/data bus bit 6 |
| پین 21 | PAD07 — External address/data bus bit 7 |
| پین 22 | PAD08 — External address/data bus bit 8 |
| پین 23 | PAD09 — External address/data bus bit 9 |
| پین 24 | PAD10 — External address/data bus bit 10 |
| پین 25 | PAD11 — External address/data bus bit 11 |
| پین 26 | PAD12 — External address/data bus bit 12 |
| پین 27 | PAD13 — External address/data bus bit 13 |
| پین 28 | PAD14 — External address/data bus bit 14 |
| پین 29 | PAD15 — External address/data bus bit 15 |
| پین 30 | PAD16 — External address/data bus bit 16 |
| پین 31 | PAD17 — External address/data bus bit 17 |
| پین 32 | PAD18 — External address/data bus bit 18 |
| پین 33 | PAD19 — External address/data bus bit 19 |
| پین 34 | PAD20 — External address/data bus bit 20 |
| پین 35 | PAD21 — External address/data bus bit 21 |
| پین 36 | PAD22 — External address/data bus bit 22 |
| پین 37 | PAD23 — External address/data bus bit 23 |
| پین 38 | PE2 — Port E bit 2 |
| پین 39 | PE3 — Port E bit 3 |
| پین 40 | PE4 — Port E bit 4 |
| پین 41 | PE5 — Port E bit 5 |
| پین 42 | PE6 — Port E bit 6 |
| پین 43 | PE7 — Port E bit 7 |
| پین 44 | PJ0 — Port J bit 0 |
| پین 45 | PJ1 — Port J bit 1 |
| پین 46 | PJ2 — Port J bit 2 (XIRQ) |
| پین 47 | PJ3 — Port J bit 3 |
| پین 48 | PJ4 — Port J bit 4 |
| پین 49 | PJ5 — Port J bit 5 |
| پین 50 | PJ6 — Port J bit 6 |
| پین 51 | PJ7 — Port J bit 7 |
| پین 52 | PK0 — Port K bit 0 |
| پین 53 | PK1 — Port K bit 1 |
| پین 54 | PK2 — Port K bit 2 |
| پین 55 | PK3 — Port K bit 3 |
| پین 56 | PK4 — Port K bit 4 |
| پین 57 | PK5 — Port K bit 5 |
| پین 58 | PK6 — Port K bit 6 |
| پین 59 | PK7 — Port K bit 7 |
| پین 60 | PA0 — Port A bit 0 |
| پین 61 | PA1 — Port A bit 1 |
| پین 62 | PA2 — Port A bit 2 |
| پین 63 | PA3 — Port A bit 3 |
| پین 64 | PA4 — Port A bit 4 |
| پین 65 | PA5 — Port A bit 5 |
| پین 66 | PA6 — Port A bit 6 |
| پین 67 | PA7 — Port A bit 7 |
| پین 68 | PB0 — Port B bit 0 |
| پین 69 | PB1 — Port B bit 1 |
| پین 70 | PB2 — Port B bit 2 |
| پین 71 | PB3 — Port B bit 3 |
| پین 72 | PB4 — Port B bit 4 |
| پین 73 | PB5 — Port B bit 5 |
| پین 74 | PB6 — Port B bit 6 |
| پین 75 | PB7 — Port B bit 7 |
| پین 76 | PC0 — Port C bit 0 |
| پین 77 | PC1 — Port C bit 1 |
| پین 78 | PC2 — Port C bit 2 |
| پین 79 | PC3 — Port C bit 3 |
| پین 80 | PC4 — Port C bit 4 |
| پین 81 | PC5 — Port C bit 5 |
| پین 82 | PC6 — Port C bit 6 |
| پین 83 | PC7 — Port C bit 7 |
| پین 84 | PD0 — Port D bit 0 |
| پین 85 | PD1 — Port D bit 1 |
| پین 86 | PD2 — Port D bit 2 |
| پین 87 | PD3 — Port D bit 3 |
| پین 88 | PD4 — Port D bit 4 |
| پین 89 | PD5 — Port D bit 5 |
| پین 90 | PD6 — Port D bit 6 |
| پین 91 | PD7 — Port D bit 7 |
| پین 92 | PP0 — Port P bit 0 (PWM, PWM channel) |
| پین 93 | PP1 — Port P bit 1 (PWM) |
| پین 94 | PP2 — Port P bit 2 (PWM) |
| پین 95 | PP3 — Port P bit 3 (PWM) |
| پین 96 | PP4 — Port P bit 4 (PWM) |
| پین 97 | PP5 — Port P bit 5 (PWM) |
| پین 98 | PP6 — Port P bit 6 (PWM) |
| پین 99 | PP7 — Port P bit 7 (PWM) |
| پین 100 | PT0 — Port T bit 0 (TIM timer input/output) |
| پین 101 | PT1 — Port T bit 1 (TIM timer input/output) |
| پین 102 | PT2 — Port T bit 2 (TIM timer input/output) |
| پین 103 | PT3 — Port T bit 3 (TIM timer input/output) |
| پین 104 | PT4 — Port T bit 4 (TIM timer input/output) |
| پین 105 | PT5 — Port T bit 5 (TIM timer input/output) |
| پین 106 | PT6 — Port T bit 6 (TIM timer input/output) |
| پین 107 | PT7 — Port T bit 7 (TIM timer input/output) |
| پین 108 | CAN0TX — CAN0 transmit |
| پین 109 | CAN0RX — CAN0 receive |
| پین 110 | CAN1TX — CAN1 transmit |
| پین 111 | CAN1RX — CAN1 receive |
| پین 112 | IICSCL — IIC clock |
| پین 113 | IICSDA — IIC data |
| پین 114 | SCIRX — SCI receive |
| پین 115 | SCITX — SCI transmit |
| پین 116 | SPI_SS — SPI slave select (GPIO) |
| پین 117 | SPI_MOSI — SPI master out / slave in |
| پین 118 | SPI_MISO — SPI master in / slave out |
| پین 119 | SPI_SCK — SPI clock |
| پین 120 | VDDA — Analog supply |
| پین 121 | VSSA — Analog ground |
| پین 122 | VRH — ADC high reference voltage |
| پین 123 | VRL — ADC low reference voltage |
| پین 124 | AN0 — ADC analog input 0 |
| پین 125 | AN1 — ADC analog input 1 |
| پین 126 | AN2 — ADC analog input 2 |
| پین 127 | AN3 — ADC analog input 3 |
| پین 128 | AN4 — ADC analog input 4 |
| پین 129 | AN5 — ADC analog input 5 |
| پین 130 | AN6 — ADC analog input 6 |
| پین 131 | AN7 — ADC analog input 7 |
| پین 132 | PWM0 — PWM channel 0 |
| پین 133 | PWM1 — PWM channel 1 |
| پین 134 | PWM2 — PWM channel 2 |
| پین 135 | PWM3 — PWM channel 3 |
| پین 136 | PWM4 — PWM channel 4 |
| پین 137 | PWM5 — PWM channel 5 |
| پین 138 | PWM6 — PWM channel 6 |
| پین 139 | PWM7 — PWM channel 7 |
| پین 140 | PE0_XIRQ — XIRQ shared with PE0 |
| پین 141 | MODC — Mode control (tie to VDD for normal single-chip mode) |
| پین 142 | TCLK — Timer clock input |
| پین 143 | TEST2 — Test pin (tie to VSS for normal operation) |
| پین 144 | EPAD — Exposed thermal pad (connect to VSS) |
کاربردهای معمول
MC9S12XD256MAG مناسب است برای 6 کاربردs: Automotive Body Control Modules, Industrial HVAC and Climate Controllers, CAN Gateway and Network Bridges, Motor Control and PWM-Driven Loads, Sensor Fusion and Front-End Acquisition, Industrial PLC and Distributed I/O Nodes.
Automotive Body Control Modules
Why it fits: The MC9S12XD256MAG's dual msCAN controllers and 256 KB Flash deliver the headroom needed for BCMs that juggle comfort, lighting and diagnostics over one CAN channel while leaving the other for service. How it is used: Often paired with LIN transceivers for seat/window control and a high-side driver IC; the HCS12X 80 MHz CPU plus XGATE allows deterministic response to bus errors within about 1 us, which is useful when handling safety-critical loads. AEC-Q100-grade temperature range (-40C to +125C) and 5 V I/O keep the part directly compatible with 12 V automotive rails.
پیشنهادی
Industrial HVAC and Climate Controllers
Why it fits: The MC9S12XD256MAG's 8-channel 10-bit ADC and 8 PWM channels map directly to temperature sensors, fan/motor drivers and valve actuators used in HVAC controllers. How it is used: Sits on a 24 V industrial rail with a small switching regulator down to 5 V, drives TRIACs through opto-isolators, and reports status via a single CAN to a central BMS. Reliable 80 MHz operation and 12 KB RAM give enough room for PID tables and fault logging without external SRAM expansion.
پیشنهادی
CAN Gateway and Network Bridges
Why it fits: With two independent msCAN controllers and HCS12X instruction queue, MC9S12XD256MAG can route messages between two buses, filter them in RAM, and forward with sub-millisecond latency. How it is used: Typically deployed as a body-to-powertrain or CAN-to-LIN bridge, sitting between a higher-speed powertrain bus and a lower-speed body bus while handling diagnostics over UDS. The 256 KB Flash accommodates large routing tables in automotive-grade firmware.
پیشنهادی
Motor Control and PWM-Driven Loads
Why it fits: The 8 PWM channels and 16-bit timers of MC9S12XD256MAG suit small brushless DC and stepper motor controllers for pumps, fans and small actuators. How it is used: Senses phase currents with the on-chip 10-bit ADC and commutates via PWM; HCS12X code runs vector control loops at sub-millisecond rates with XGATE offloading ADC interrupts for cleaner timing margins. The 144-LQFP footprint brings enough I/O to drive multiple half-bridges in parallel.
پیشنهادی
Sensor Fusion and Front-End Acquisition
Why it fits: The MC9S12XD256MAG offers enough ADC and digital I/O bandwidth to aggregate inputs from pressure, temperature and position sensors before relaying them over CAN. How it is used: Front-end modules in chassis systems run ADC sampling for shock and yaw sensors, buffer timestamps in RAM, and post-processed frames onto CAN using one of the msCAN peripherals, leaving the main CPU free for diagnostics. AEC-Q100-grade temperature rating is critical for under-hood mounting.
پیشنهادی
Industrial PLC and Distributed I/O Nodes
Why it fits: The 80 MHz HCS12X CPU and large Flash let MC9S12XD256MAG run ladder logic plus diagnostics in a single IC, eliminating a separate communications processor. How it is used: Acts as a CAN-IO node on a factory bus, scanning 8 digital inputs per ADC channel-set and driving 8 PWM outputs back to solenoids. The 4 KB EEPROM stores calibration data that survives flash upgrades, while 5 V-tolerant I/O simplifies industrial wiring without extra level shifters.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای MC9S12XD256MAG — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | MC9S12XDT256CAG | MC9S12XDT256MAG | MC9S12XDP512MAG |
|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 144-LQFP (20x20) | 144-LQFP (20x20) | 144-LQFP (20x20) | 144-LQFP (20x20) |
| Core | HCS12X 16-bit | HCS12X 16-bit | HCS12X 16-bit | HCS12X 16-bit |
| Maximum CPU Clock | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| Flash Memory | 256 KB | 512 KB | 256 KB | 512 KB |
| RAM | 12 KB | 20 KB | 12 KB | 32 KB |
| EEPROM | 4 KB | 4 KB | 4 KB | 4 KB |
| CAN Controllers | 2 x msCAN | 2 x msCAN | 2 x msCAN | 2 x msCAN |
تفاوت‌های کلیدی
- Optimal Flash density in the S12XD 144-LQFP family at lowest cost (در مقابلMC9S12XDT256CAG)
- XGATE coprocessor for deterministic peripheral offload (در مقابلMC9S12XA256MAG)
- Identical peripheral count versus higher Flash variants (در مقابلMC9S12XDP512MAG)
یادداشت‌های طراحی
Estimated: VDDR supplies the internal 1.8V regulator and must be bypassed with a 1uF X7R ceramic placed within 5 mm of the pin; the 2.5V VDDPLL rail is sensitive to noise and should be filtered through a ferrite bead. Power-on reset asserts until VDD rises above 2.4V, after which the device enters single-chip mode. A 10 kohm pull-up on RESET to VDD is recommended and a 10 nF cap to VSS prevents false resets in noisy automotive environments.
The 144-LQFP exposed thermal pad (EPAD, pin 144) must be soldered to a contiguous ground copper pour of at least 1 square inch to keep junction temperature below 125C under 80 MHz operation. Without the EPAD connection, theta_JA exceeds 50 C/W and the device may derate under sustained 100% CPU load. Recommended: 4-layer PCB with solid ground planes top and bottom.
Route analog pins (AN0-AN7, VRH, VRL, VDDA, VSSA) on a different layer than digital I/O and keep traces short. Place the 10 nF AVREF bypass cap adjacent to VRH/VRL. The BDM/debug port must be reachable for firmware updates - include a 6-pin 2x3 header footprint even if unused in production to allow field debugging via P&E Multilink or USBDM tools.
Do not leave MODC floating - tie to VDD for normal single-chip mode or to VSS for special modes (otherwise undefined boot behaviour). Always programme the CONFIG register to set clock source (PLL or oscillator) before issuing any application code; an unconfigured device boots from internal 1 MHz IRC and CAN bit timing will be wrong. For CAN bit timing, ensure tq segment lengths meet the S12X clock calculator defaults for 500 kbps and 1 Mbps operation.
اطلاعات انطباق
RoHS and REACH compliance per NXP product family data. AEC-Q100 qualified for automotive Grade 0 (-40C to +125C). Halogen-free status not explicitly confirmed in the verified sources and marked as [DATA_NEEDED]; NXP S12XD family is generally halogen-free per NXP policy.