MC9S12XDT256CAG - 16-bit HCS12X MCU, 256KB Flash, 144-LQFP | NXP
MPN: MC9S12XDT256CAG ⚠ Lần mua cuốiMC9S12XDT256CAG Tóm tắt
An MCU (microcontroller unit) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), working memory (RAM), and a rich set of peripherals such as timers, ADCs, communication controllers, and GPIO on a single die. The MC9S12XDT256CAG belongs to the S12XD family that delivers 32-bit-like performance while preserving the HCS12 instruction set for code reuse. As a derivative of the broader Freescale/NXP HCS12 lineage, it sits in the category: MCU -> microcontroller -> embedded processor -> semiconductor.
Key features include 256KB Flash, 16KB RAM, 4KB EEPROM, 119 I/O lines, 8/16-bit PWM, up to 8 timer channels, MSCAN (CAN 2.0A/B) controller, SCI/SPI serial interfaces, 16-channel 10-bit ADC, and a 5V-tolerant I/O. The XGATE co-processor offloads interrupt-driven tasks from the main CPU, effectively doubling throughput for I/O-bound automotive workloads. Internal Phase-Locked Loop (IPLL) generates the 80 MHz bus clock from an external 4-16 MHz crystal.
The architecture uses an enhanced 16-bit CISC core with 20-bit ALU extensions, instruction queue, and enhanced indexed addressing. XGATE is an independent RISC-style peripheral co-processor that runs concurrent to the CPU and is ideal for processing CAN, LIN, and SPI traffic in real time. The device operates from a single 2.5V core / 5V I/O supply pair, simplifying automotive 12V rail design.
Typical applications include automotive body controllers (BCM), gateway modules, instrument clusters, HVAC control, door modules, seat controllers, and industrial CAN-node controllers. The 5V I/O tolerance and on-chip MSCAN make it ideal for any 12V-board automotive multiplexing network.
When designing, pay attention to decoupling: place 100nF ceramic + 4.7uF bulk on VDDR/VSS, plus 10uF on VDDX/VSSX. Use NXP's BDM (Background Debug Mode) interface via the BKGD pin for in-circuit programming. The PLL reference loop filter (XFC pin) capacitor selection is critical for jitter performance.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho MC9S12XDT256CAG — 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 MC9S12XDT256CAG (cùng hình factor và footprint) — khác nhau ở Package, Core Processor, Supply Voltage, Operating Temperature, Connectivity.
MC9S12XDT256CAGR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MC9S12XDT256MAG
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC9S12XDP512MAG
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC9S12XD256MAG
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC9S12XD256MAL
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC9S12XHZ256CAG
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MC9S12XEP100MAL
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MC9S12XDT256CAG Tỷ lệ tối đa & tính chất điện
| Core | HCS12X (16-bit CISC with XGATE co-processor) |
| Program Memory | 256 KB Flash |
| RAM | 16 KB |
| EEPROM | 4 KB |
| Maximum CPU Frequency | 80 MHz |
| Supply Voltage - Core | 2.35 V to 2.75 V |
| Supply Voltage - I/O | 4.5 V to 5.5 V |
| I/O Pins | 119 |
| Nhiệt độ hoạt động | -40C to +85C |
| Hộp | 144-pin LQFP (20x20 mm) |
| CAN Controllers (MSCAN) | 5 (CAN 2.0 A/B) |
| SCI / SPI | Yes |
| ADC | 16-channel, 10-bit |
| PWM Channels | 8 |
| Timers | ECT (Enhanced Capture Timer) |
| Kiểu lắp đặt | Surface Mount |
| Debug Interface | BDM (Background Debug Mode) |
| Trạng thái vòng đời | No Longer Manufactured (per NXP product page) |
Cấu hình chân MC9S12XDT256CAG
| Chân 1 | VDDX — I/O supply voltage (5V) |
| Chân 2 | VSSX — I/O ground |
| Chân 3 | PA0 — Port A bit 0 (GPIO/ATD channel) |
| Chân 4 | PA1 — Port A bit 1 (GPIO/ATD channel) |
| Chân 5 | PA2 — Port A bit 2 (GPIO/ATD channel) |
| Chân 6 | PA3 — Port A bit 3 (GPIO/ATD channel) |
| Chân 7 | PA4 — Port A bit 4 (GPIO/ATD channel) |
| Chân 8 | PA5 — Port A bit 5 (GPIO/ATD channel) |
| Chân 9 | PA6 — Port A bit 6 (GPIO/ATD channel) |
| Chân 10 | PA7 — Port A bit 7 (GPIO/ATD channel) |
| Chân 11 | BKGD — Background Debug Mode pin |
| Chân 12 | XFC — PLL loop filter capacitor |
| Chân 13 | XTAL — Crystal oscillator input |
| Chân 14 | EXTAL — Crystal oscillator output |
| Chân 15 | RESET — External reset input (active low) |
| Chân 16 | VDDR — Internal regulator supply (2.5V core) |
| Chân 17 | VSSR — Core ground |
| Chân 18 | TEST — Test mode pin (tie to VSS) |
| Chân 19 | VDDA — ADC supply voltage |
| Chân 20 | VSSA — ADC ground |
| Chân 21 | VRH — ADC high reference voltage |
| Chân 22 | VRL — ADC low reference voltage |
| Chân 23 | PE0 — Port E bit 0 (IRQ, XIRQ, GPIO) |
| Chân 24 | PE1 — Port E bit 1 (IRQ, GPIO) |
| Chân 25 | PE2 — Port E bit 2 (IRQ, GPIO) |
| Chân 26 | PE3 — Port E bit 3 (IRQ, GPIO) |
| Chân 27 | PE4 — Port E bit 4 (GPIO, SCI) |
| Chân 28 | PE5 — Port E bit 5 (GPIO, SCI) |
| Chân 29 | PE6 — Port E bit 6 (GPIO, SCI) |
| Chân 30 | PE7 — Port E bit 7 (GPIO, SCI) |
| Chân 31 | PH0 — Port H bit 0 (GPIO, PWM) |
| Chân 32 | PH1 — Port H bit 1 (GPIO, PWM) |
| Chân 33 | PH2 — Port H bit 2 (GPIO, PWM) |
| Chân 34 | PH3 — Port H bit 3 (GPIO, PWM) |
| Chân 35 | PH4 — Port H bit 4 (GPIO, PWM) |
| Chân 36 | PH5 — Port H bit 5 (GPIO, PWM) |
| Chân 37 | PH6 — Port H bit 6 (GPIO, PWM) |
| Chân 38 | PH7 — Port H bit 7 (GPIO, PWM) |
| Chân 39 | PJ0 — Port J bit 0 (GPIO, CAN0) |
| Chân 40 | PJ1 — Port J bit 1 (GPIO, CAN0) |
| Chân 41 | PJ2 — Port J bit 2 (GPIO, CAN1) |
| Chân 42 | PJ3 — Port J bit 3 (GPIO, CAN1) |
| Chân 43 | PJ4 — Port J bit 4 (GPIO, CAN2) |
| Chân 44 | PJ5 — Port J bit 5 (GPIO, CAN2) |
| Chân 45 | PJ6 — Port J bit 6 (GPIO, CAN3) |
| Chân 46 | PJ7 — Port J bit 7 (GPIO, CAN3) |
| Chân 47 | PK0 — Port K bit 0 (GPIO, CAN4) |
| Chân 48 | PK1 — Port K bit 1 (GPIO, CAN4) |
| Chân 49 | PK2 — Port K bit 2 (GPIO) |
| Chân 50 | PK3 — Port K bit 3 (GPIO) |
| Chân 51 | PK4 — Port K bit 4 (GPIO) |
| Chân 52 | PK5 — Port K bit 5 (GPIO) |
| Chân 53 | PK6 — Port K bit 6 (GPIO) |
| Chân 54 | PK7 — Port K bit 7 (GPIO) |
| Chân 55 | PM0 — Port M bit 0 (GPIO, SPI) |
| Chân 56 | PM1 — Port M bit 1 (GPIO, SPI) |
| Chân 57 | PM2 — Port M bit 2 (GPIO, SPI) |
| Chân 58 | PM3 — Port M bit 3 (GPIO, SPI) |
| Chân 59 | PM4 — Port M bit 4 (GPIO, SPI) |
| Chân 60 | PM5 — Port M bit 5 (GPIO, SPI) |
| Chân 61 | PM6 — Port M bit 6 (GPIO, SPI) |
| Chân 62 | PM7 — Port M bit 7 (GPIO, SPI) |
| Chân 63 | PP0 — Port P bit 0 (GPIO, PWM) |
| Chân 64 | PP1 — Port P bit 1 (GPIO, PWM) |
| Chân 65 | PP2 — Port P bit 2 (GPIO, PWM) |
| Chân 66 | PP3 — Port P bit 3 (GPIO, PWM) |
| Chân 67 | PP4 — Port P bit 4 (GPIO, PWM) |
| Chân 68 | PP5 — Port P bit 5 (GPIO, PWM) |
| Chân 69 | PP6 — Port P bit 6 (GPIO, PWM) |
| Chân 70 | PP7 — Port P bit 7 (GPIO, PWM) |
| Chân 71 | PS0 — Port S bit 0 (GPIO, SPI0) |
| Chân 72 | PS1 — Port S bit 1 (GPIO, SPI0) |
| Chân 73 | PS2 — Port S bit 2 (GPIO, SPI0) |
| Chân 74 | PS3 — Port S bit 3 (GPIO, SPI0) |
| Chân 75 | PS4 — Port S bit 4 (GPIO, SPI0) |
| Chân 76 | PS5 — Port S bit 5 (GPIO, SPI0) |
| Chân 77 | PS6 — Port S bit 6 (GPIO, SPI0) |
| Chân 78 | PS7 — Port S bit 7 (GPIO, SPI0) |
| Chân 79 | PT0 — Port T bit 0 (GPIO, ECT timer) |
| Chân 80 | PT1 — Port T bit 1 (GPIO, ECT timer) |
| Chân 81 | PT2 — Port T bit 2 (GPIO, ECT timer) |
| Chân 82 | PT3 — Port T bit 3 (GPIO, ECT timer) |
| Chân 83 | PT4 — Port T bit 4 (GPIO, ECT timer) |
| Chân 84 | PT5 — Port T bit 5 (GPIO, ECT timer) |
| Chân 85 | PT6 — Port T bit 6 (GPIO, ECT timer) |
| Chân 86 | PT7 — Port T bit 7 (GPIO, ECT timer) |
| Chân 87 | AN0 — ADC analog input channel 0 (shared with PAD0) |
| Chân 88 | AN1 — ADC analog input channel 1 (shared with PAD1) |
| Chân 89 | AN2 — ADC analog input channel 2 (shared with PAD2) |
| Chân 90 | AN3 — ADC analog input channel 3 (shared with PAD3) |
| Chân 91 | AN4 — ADC analog input channel 4 (shared with PAD4) |
| Chân 92 | AN5 — ADC analog input channel 5 (shared with PAD5) |
| Chân 93 | AN6 — ADC analog input channel 6 (shared with PAD6) |
| Chân 94 | AN7 — ADC analog input channel 7 (shared with PAD7) |
| Chân 95 | PB0 — Port B bit 0 (GPIO, PWM) |
| Chân 96 | PB1 — Port B bit 1 (GPIO, PWM) |
| Chân 97 | PB2 — Port B bit 2 (GPIO, PWM) |
| Chân 98 | PB3 — Port B bit 3 (GPIO, PWM) |
| Chân 99 | PB4 — Port B bit 4 (GPIO, PWM) |
| Chân 100 | PB5 — Port B bit 5 (GPIO, PWM) |
| Chân 101 | PB6 — Port B bit 6 (GPIO, PWM) |
| Chân 102 | PB7 — Port B bit 7 (GPIO, PWM) |
| Chân 103 | PC0 — Port C bit 0 (GPIO) |
| Chân 104 | PC1 — Port C bit 1 (GPIO) |
| Chân 105 | PC2 — Port C bit 2 (GPIO) |
| Chân 106 | PC3 — Port C bit 3 (GPIO) |
| Chân 107 | PC4 — Port C bit 4 (GPIO) |
| Chân 108 | PC5 — Port C bit 5 (GPIO) |
| Chân 109 | PC6 — Port C bit 6 (GPIO) |
| Chân 110 | PC7 — Port C bit 7 (GPIO) |
| Chân 111 | PD0 — Port D bit 0 (GPIO, SCI) |
| Chân 112 | PD1 — Port D bit 1 (GPIO, SCI) |
| Chân 113 | PD2 — Port D bit 2 (GPIO, SPI) |
| Chân 114 | PD3 — Port D bit 3 (GPIO, SPI) |
| Chân 115 | PD4 — Port D bit 4 (GPIO, SPI) |
| Chân 116 | PD5 — Port D bit 5 (GPIO, SPI) |
| Chân 117 | PD6 — Port D bit 6 (GPIO, SPI) |
| Chân 118 | PD7 — Port D bit 7 (GPIO, SPI) |
| Chân 119 | PF0 — Port F bit 0 (GPIO, ECT) |
| Chân 120 | PF1 — Port F bit 1 (GPIO, ECT) |
| Chân 121 | PF2 — Port F bit 2 (GPIO, ECT) |
| Chân 122 | PF3 — Port F bit 3 (GPIO, ECT) |
| Chân 123 | PF4 — Port F bit 4 (GPIO, ECT) |
| Chân 124 | PF5 — Port F bit 5 (GPIO, ECT) |
| Chân 125 | PF6 — Port F bit 6 (GPIO, ECT) |
| Chân 126 | PF7 — Port F bit 7 (GPIO, ECT) |
| Chân 127 | PG0 — Port G bit 0 (GPIO) |
| Chân 128 | PG1 — Port G bit 1 (GPIO) |
| Chân 129 | PG2 — Port G bit 2 (GPIO) |
| Chân 130 | PG3 — Port G bit 3 (GPIO) |
| Chân 131 | PG4 — Port G bit 4 (GPIO) |
| Chân 132 | PG5 — Port G bit 5 (GPIO) |
| Chân 133 | PG6 — Port G bit 6 (GPIO) |
| Chân 134 | PG7 — Port G bit 7 (GPIO) |
| Chân 135 | VDDX — I/O supply voltage (5V) |
| Chân 136 | VSSX — I/O ground |
| Chân 137 | VDDR — Internal regulator supply (2.5V core) |
| Chân 138 | VSSR — Core ground |
| Chân 139 | CAN0TX — CAN0 transmit (alternate function) |
| Chân 140 | CAN0RX — CAN0 receive (alternate function) |
| Chân 141 | CAN1TX — CAN1 transmit (alternate function) |
| Chân 142 | CAN1RX — CAN1 receive (alternate function) |
| Chân 143 | CAN4TX — CAN4 transmit (alternate function) |
| Chân 144 | CAN4RX — CAN4 receive (alternate function) |
Ứng dụng tiêu biểu
MC9S12XDT256CAG phù hợp cho 7 Áp dụngs: Automotive Body Control Module (BCM), Automotive Gateway / Network Bridge, HVAC Climate Control Module, Industrial CAN-Node Controller, Instrument Cluster Controller, Door Module / Seat Controller, Battery Management Slave Controller.
Automotive Body Control Module (BCM)
The MC9S12XDT256CAG fits BCM designs because it integrates 5 MSCAN controllers, 119 GPIO, and 256 KB Flash in a single 144-LQFP, eliminating the external CAN expander ICs often required by smaller MCUs. Its 5V I/O tolerance interfaces directly to 12V automotive loads through standard high-side drivers. The XGATE co-processor offloads CAN message processing from the main CPU, sustaining deterministic response times below 1 ms across multiple in-vehicle buses. Typical BCM tasks include central locking, exterior lighting, wiper control, and gateway routing - all within the device's 256 KB Flash budget.
Được đề xuất
Automotive Gateway / Network Bridge
For CAN-to-CAN gateway modules, the MC9S12XDT256CAG's 5 MSCAN channels and XGATE co-processor allow simultaneous bridging across powertrain, body, and chassis buses without packet loss. The 256 KB Flash accommodates routing tables for typical mid-range gateways with 50-100 message IDs. The HCS12X instruction set and on-chip 4 KB EEPROM simplify non-volatile storage of network configuration. Engineers should evaluate MC9S12XDP512MAG if the routing table exceeds 256 KB, or MC9S12XEP100MAL for higher-end gateway designs.
Được đề xuất
HVAC Climate Control Module
HVAC modules leverage the MC9S12XDT256CAG's 16-channel 10-bit ADC for multi-zone temperature sensing and 8 PWM channels for blower motor speed control. The 119 GPIO count allows direct interface to rotary encoders, push buttons, and stepper motor drivers without external I/O expanders. The -40C to +85C operating range covers cabin and under-dash environments. The 256 KB Flash is sufficient for adaptive climate-control algorithms with PID loops and PWM scheduling. Use the ECT (Enhanced Capture Timer) for precise PWM dead-time generation to prevent shoot-through in motor half-bridges.
Được đề xuất
Industrial CAN-Node Controller
In industrial automation, the MC9S12XDT256CAG serves as a CANopen or DeviceNet slave controller with 5 isolated CAN ports and 5V-tolerant GPIO for direct sensor/actuator interface. The XGATE handles CAN message processing deterministically, freeing the CPU for application logic. The 256 KB Flash supports CANopen stack libraries (typically 80-150 KB) plus custom application code. The 144-LQFP (20x20) package is suitable for industrial -40C to +85C enclosures. Pair with isolated CAN transceivers like ISO1050 for galvanic isolation in 24V industrial environments.
Được đề xuất
Instrument Cluster Controller
Instrument clusters benefit from the MC9S12XDT256CAG's SPI interface for connecting to stepper motor gauge drivers and segmented LCD controllers. The 5 MSCAN channels receive vehicle CAN bus data for speed, RPM, fuel level, and temperature gauges. The 256 KB Flash accommodates gauge sweep animations and warning logic, while 16 KB RAM buffers display update frames. The HCS12X core's deterministic interrupt response suits real-time gauge damping calculations. For full TFT cluster designs, the MC9S12XEP100MAL offers 1 MB Flash for graphics rendering.
Được đề xuất
Door Module / Seat Controller
Door modules controlling window lift, mirror adjustment, and central locking use the MC9S12XDT256CAG's PWM channels for motor speed control and 119 GPIO for switch matrix and LED feedback. The 256 KB Flash supports multi-window anti-pinch algorithms and LIN/CAN communication with the BCM. The -40C to +85C rating covers door-mounted environments with summer sun heating. The 5 MSCAN channels allow integration with body bus plus a private sub-network. Pin-compatible migration to MC9S12XDP512MAG provides headroom for advanced comfort features.
Được đề xuất
Battery Management Slave Controller
In 12V/48V automotive battery management systems, the MC9S12XDT256CAG acts as a cell-monitoring slave communicating via CAN to a master BMS controller. Its 16-channel 10-bit ADC samples cell voltages while 5V GPIO interfaces directly to battery pack voltage dividers. The 256 KB Flash supports cell-balancing algorithms and SOH (State-of-Health) estimation. The -40C to +85C rating handles underhood battery compartment environments. The 5 MSCAN channels allow daisy-chained multi-pack configurations without external CAN muxes.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MC9S12XDT256CAG — 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 | MC9S12XDT256CAGR | MC9S12XDT256MAG | MC9S12XDP512MAG | MC9S12XD256MAG | MC9S12XEP100MAL |
|---|---|---|---|---|---|---|
| Package | 144-LQFP (20x20) | 144-LQFP (20x20) - same | 144-LQFP (20x20) - same | 144-LQFP (20x20) - same | 144-LQFP (20x20) - same | 144-LQFP (20x20) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Program Flash | 256 KB | 256 KB | 256 KB | 512 KB | 256 KB | 1 MB |
| RAM | 16 KB | 16 KB | 16 KB | 32 KB | 16 KB | 64 KB |
| MSCAN CAN Channels | 5 | 5 | 5 | 6 | 4 | 5 |
| CPU Frequency | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 100 MHz |
| Operating Temperature | -40C to +85C (C grade) | -40C to +85C | -40C to +125C (M grade) | -40C to +125C (M grade) | -40C to +125C (M grade) | -40C to +125C (M grade) |
| XGATE Co-processor | Yes | Yes | Yes | Yes | Yes | Yes |
| Lifecycle Status | No Longer Manufactured | No Longer Manufactured | No Longer Manufactured | Active | Active (legacy) | Active |
Bảo phân biệt quan trọng
- 5 MSCAN channels - among the highest CAN density in HCS12X family (vsMC9S12XD256MAG)
- 256 KB Flash with XGATE - balanced code size and peripheral processing (vsMC9S12XDP512MAG)
- Tier-A drop-in compatibility across S12XD family (vsMC9S12XEP100MAL)
Ghi chú thiết kế
The MC9S12XDT256CAG requires two supply rails: VDDR (2.35V to 2.75V core, internally regulated from VDDX) and VDDX (4.5V to 5.5V I/O). Place a 100 nF ceramic + 4.7 uF bulk capacitor directly on VDDR/VSS and a 10 uF + 100 nF combination on VDDX/VSSX. Add a ferrite bead between battery 12V and VDDX for automotive transient suppression. Reverse-battery and load-dump protection (e.g., SMBJ24CA TVS) is mandatory for 12V automotive environments.
The XFC pin (PLL loop filter) requires careful layout: route a low-leakage capacitor (typically 1 nF to 10 nF C0G/NP0) directly to the XFC pin and VSS with minimal trace length (<5 mm) and no via stubs. Keep the XTAL/EXTAL traces short and symmetric, surrounded by a ground guard ring to avoid crosstalk. Route the BKGD and RESET traces away from PWM outputs and motor driver signals to prevent noise-induced debug failures.
Watch out for these common pitfalls: (1) Enabling the on-chip voltage regulator without a valid clock source can lock the device - always ensure XTAL/EXTAL is stable before exiting reset. (2) The XGATE co-processor must be explicitly enabled in software and its interrupt vector table loaded into RAM at startup - omitting this causes hard-fault on peripheral ISRs. (3) MSCAN bit timing requires careful calculation of TSEG1/TSEG2 per the bus baud rate and oscillator accuracy - use NXP's CAN bit timing calculator tool.
The 144-LQFP package has a theta-JA of approximately 38 C/W with a standard 4-layer JEDEC PCB. At 80 MHz CPU clock, the device typically dissipates 0.5 W to 1.0 W depending on peripheral activity. For sealed enclosures without airflow, calculate junction temperature using T_J = T_A + (P_D x theta-JA). Ensure T_J remains below 125C maximum. NXP application note AN2400 provides thermal characterization data.
Thông tin tuân thủ
AEC-Q100 qualified per NXP S12XD family datasheet. Lead-free reflow-compatible. RoHS/REACH/halogen-free status not confirmed from verified web data - listed as [DATA_NEEDED].
