MC9S12XD256MAG - 16-Bit HCS12X 80MHz 256KB Flash MCU | NXP
MPN: MC9S12XD256MAG ✗ Cuối đờiMC9S12XD256MAG Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho MC9S12XD256MAG — 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 MC9S12XD256MAG (cùng hình factor và footprint) — khác nhau ở ADC, Package, Supply Voltage, Core, Operating Temperature.
MC9S12XDT256CAG
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC9S12XDT256MAG
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC9S12XDP512MAG
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC9S12XDP512CAG
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MC9S12XEQ512MAG
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC9S12XA256MAG
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MC9S12XD256MAG Tỷ lệ tối đa & tính chất điện
| Core Architecture | HCS12X (S12XD) |
| Bề rộng đường dữ liệu | 16-bit |
| CPU Clock (max) | 80 MHz |
| Program Memory | 256 KB Flash (256K x 8) |
| RAM | 12 KB |
| EEPROM | 4 KB |
| Điện áp cung cấp | 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 |
| Hộp | 144-LQFP (20 x 20 mm) |
| Nhiệt độ hoạt động | -40C to +125C (Automotive grade) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
Cấu hình chân MC9S12XD256MAG
| Chân 1 | PE1 — Port E bit 1 (general-purpose I/O, IRQ) |
| Chân 2 | PE0 — Port E bit 0 (general-purpose I/O, XIRQ) |
| Chân 3 | BKGD — Background Debug Mode |
| Chân 4 | RESET — External reset input (active low) |
| Chân 5 | VDDR |
| Chân 6 | VDD |
| Chân 7 | VSS |
| Chân 8 | VDDPLL — PLL supply |
| Chân 9 | VSSPLL — PLL ground |
| Chân 10 | TEST — Test mode (tie to VSS for normal operation) |
| Chân 11 | XCLKS — Clock select (configuration) |
| Chân 12 | EXTAL — External clock/crystal input |
| Chân 13 | XTAL — Crystal output |
| Chân 14 | PAD00 — External address/data bus bit 0 |
| Chân 15 | PAD01 — External address/data bus bit 1 |
| Chân 16 | PAD02 — External address/data bus bit 2 |
| Chân 17 | PAD03 — External address/data bus bit 3 |
| Chân 18 | PAD04 — External address/data bus bit 4 |
| Chân 19 | PAD05 — External address/data bus bit 5 |
| Chân 20 | PAD06 — External address/data bus bit 6 |
| Chân 21 | PAD07 — External address/data bus bit 7 |
| Chân 22 | PAD08 — External address/data bus bit 8 |
| Chân 23 | PAD09 — External address/data bus bit 9 |
| Chân 24 | PAD10 — External address/data bus bit 10 |
| Chân 25 | PAD11 — External address/data bus bit 11 |
| Chân 26 | PAD12 — External address/data bus bit 12 |
| Chân 27 | PAD13 — External address/data bus bit 13 |
| Chân 28 | PAD14 — External address/data bus bit 14 |
| Chân 29 | PAD15 — External address/data bus bit 15 |
| Chân 30 | PAD16 — External address/data bus bit 16 |
| Chân 31 | PAD17 — External address/data bus bit 17 |
| Chân 32 | PAD18 — External address/data bus bit 18 |
| Chân 33 | PAD19 — External address/data bus bit 19 |
| Chân 34 | PAD20 — External address/data bus bit 20 |
| Chân 35 | PAD21 — External address/data bus bit 21 |
| Chân 36 | PAD22 — External address/data bus bit 22 |
| Chân 37 | PAD23 — External address/data bus bit 23 |
| Chân 38 | PE2 — Port E bit 2 |
| Chân 39 | PE3 — Port E bit 3 |
| Chân 40 | PE4 — Port E bit 4 |
| Chân 41 | PE5 — Port E bit 5 |
| Chân 42 | PE6 — Port E bit 6 |
| Chân 43 | PE7 — Port E bit 7 |
| Chân 44 | PJ0 — Port J bit 0 |
| Chân 45 | PJ1 — Port J bit 1 |
| Chân 46 | PJ2 — Port J bit 2 (XIRQ) |
| Chân 47 | PJ3 — Port J bit 3 |
| Chân 48 | PJ4 — Port J bit 4 |
| Chân 49 | PJ5 — Port J bit 5 |
| Chân 50 | PJ6 — Port J bit 6 |
| Chân 51 | PJ7 — Port J bit 7 |
| Chân 52 | PK0 — Port K bit 0 |
| Chân 53 | PK1 — Port K bit 1 |
| Chân 54 | PK2 — Port K bit 2 |
| Chân 55 | PK3 — Port K bit 3 |
| Chân 56 | PK4 — Port K bit 4 |
| Chân 57 | PK5 — Port K bit 5 |
| Chân 58 | PK6 — Port K bit 6 |
| Chân 59 | PK7 — Port K bit 7 |
| Chân 60 | PA0 — Port A bit 0 |
| Chân 61 | PA1 — Port A bit 1 |
| Chân 62 | PA2 — Port A bit 2 |
| Chân 63 | PA3 — Port A bit 3 |
| Chân 64 | PA4 — Port A bit 4 |
| Chân 65 | PA5 — Port A bit 5 |
| Chân 66 | PA6 — Port A bit 6 |
| Chân 67 | PA7 — Port A bit 7 |
| Chân 68 | PB0 — Port B bit 0 |
| Chân 69 | PB1 — Port B bit 1 |
| Chân 70 | PB2 — Port B bit 2 |
| Chân 71 | PB3 — Port B bit 3 |
| Chân 72 | PB4 — Port B bit 4 |
| Chân 73 | PB5 — Port B bit 5 |
| Chân 74 | PB6 — Port B bit 6 |
| Chân 75 | PB7 — Port B bit 7 |
| Chân 76 | PC0 — Port C bit 0 |
| Chân 77 | PC1 — Port C bit 1 |
| Chân 78 | PC2 — Port C bit 2 |
| Chân 79 | PC3 — Port C bit 3 |
| Chân 80 | PC4 — Port C bit 4 |
| Chân 81 | PC5 — Port C bit 5 |
| Chân 82 | PC6 — Port C bit 6 |
| Chân 83 | PC7 — Port C bit 7 |
| Chân 84 | PD0 — Port D bit 0 |
| Chân 85 | PD1 — Port D bit 1 |
| Chân 86 | PD2 — Port D bit 2 |
| Chân 87 | PD3 — Port D bit 3 |
| Chân 88 | PD4 — Port D bit 4 |
| Chân 89 | PD5 — Port D bit 5 |
| Chân 90 | PD6 — Port D bit 6 |
| Chân 91 | PD7 — Port D bit 7 |
| Chân 92 | PP0 — Port P bit 0 (PWM, PWM channel) |
| Chân 93 | PP1 — Port P bit 1 (PWM) |
| Chân 94 | PP2 — Port P bit 2 (PWM) |
| Chân 95 | PP3 — Port P bit 3 (PWM) |
| Chân 96 | PP4 — Port P bit 4 (PWM) |
| Chân 97 | PP5 — Port P bit 5 (PWM) |
| Chân 98 | PP6 — Port P bit 6 (PWM) |
| Chân 99 | PP7 — Port P bit 7 (PWM) |
| Chân 100 | PT0 — Port T bit 0 (TIM timer input/output) |
| Chân 101 | PT1 — Port T bit 1 (TIM timer input/output) |
| Chân 102 | PT2 — Port T bit 2 (TIM timer input/output) |
| Chân 103 | PT3 — Port T bit 3 (TIM timer input/output) |
| Chân 104 | PT4 — Port T bit 4 (TIM timer input/output) |
| Chân 105 | PT5 — Port T bit 5 (TIM timer input/output) |
| Chân 106 | PT6 — Port T bit 6 (TIM timer input/output) |
| Chân 107 | PT7 — Port T bit 7 (TIM timer input/output) |
| Chân 108 | CAN0TX — CAN0 transmit |
| Chân 109 | CAN0RX — CAN0 receive |
| Chân 110 | CAN1TX — CAN1 transmit |
| Chân 111 | CAN1RX — CAN1 receive |
| Chân 112 | IICSCL — IIC clock |
| Chân 113 | IICSDA — IIC data |
| Chân 114 | SCIRX — SCI receive |
| Chân 115 | SCITX — SCI transmit |
| Chân 116 | SPI_SS — SPI slave select (GPIO) |
| Chân 117 | SPI_MOSI — SPI master out / slave in |
| Chân 118 | SPI_MISO — SPI master in / slave out |
| Chân 119 | SPI_SCK — SPI clock |
| Chân 120 | VDDA — Analog supply |
| Chân 121 | VSSA — Analog ground |
| Chân 122 | VRH — ADC high reference voltage |
| Chân 123 | VRL — ADC low reference voltage |
| Chân 124 | AN0 — ADC analog input 0 |
| Chân 125 | AN1 — ADC analog input 1 |
| Chân 126 | AN2 — ADC analog input 2 |
| Chân 127 | AN3 — ADC analog input 3 |
| Chân 128 | AN4 — ADC analog input 4 |
| Chân 129 | AN5 — ADC analog input 5 |
| Chân 130 | AN6 — ADC analog input 6 |
| Chân 131 | AN7 — ADC analog input 7 |
| Chân 132 | PWM0 — PWM channel 0 |
| Chân 133 | PWM1 — PWM channel 1 |
| Chân 134 | PWM2 — PWM channel 2 |
| Chân 135 | PWM3 — PWM channel 3 |
| Chân 136 | PWM4 — PWM channel 4 |
| Chân 137 | PWM5 — PWM channel 5 |
| Chân 138 | PWM6 — PWM channel 6 |
| Chân 139 | PWM7 — PWM channel 7 |
| Chân 140 | PE0_XIRQ — XIRQ shared with PE0 |
| Chân 141 | MODC — Mode control (tie to VDD for normal single-chip mode) |
| Chân 142 | TCLK — Timer clock input |
| Chân 143 | TEST2 — Test pin (tie to VSS for normal operation) |
| Chân 144 | EPAD — Exposed thermal pad (connect to VSS) |
Ứng dụng tiêu biểu
MC9S12XD256MAG phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MC9S12XD256MAG — 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 | 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 |
Bảo phân biệt quan trọng
- Optimal Flash density in the S12XD 144-LQFP family at lowest cost (vsMC9S12XDT256CAG)
- XGATE coprocessor for deterministic peripheral offload (vsMC9S12XA256MAG)
- Identical peripheral count versus higher Flash variants (vsMC9S12XDP512MAG)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.