MC9S12XDT256CAG - 16-bit HCS12X MCU, 256KB Flash, 144-LQFP | NXP
料号： MC9S12XDT256CAG ⚠ 最后一次采购| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $28.5 | $28.50 |
| 10 | $25.1 | $251.00 |
| 100 | $21.75 | $2,175.00 |
| 500 | $19.2 | $9,600.00 |
| 1,000 | $17.4 | $17,400.00 |
MC9S12XDT256CAG 概述
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.
直接替换替代料： MC9S12XDT256CAG ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： MC9S12XDT256CAG （相同外形与封装尺寸） ——差异在于 Package, Core Processor, Supply Voltage, Operating Temperature, Connectivity.
快速对比工具——选择替代料号进行并排对比：
MC9S12XDT256CAGR
✅ 直接替换📋 参考替代料（不在目录中）
MC9S12XDT256MAG
✅ 直接替换✓ 有现货
$10.65 / 个
查看数据手册 →MC9S12XDP512MAG
✅ 直接替换✓ 有现货
联系询价
查看数据手册 →MC9S12XD256MAG
✅ 直接替换✓ 有现货
$17.1 / 个
查看数据手册 →MC9S12XD256MAL
✅ 直接替换✓ 有现货
$17.85 / 个
查看数据手册 →MC9S12XHZ256CAG
✅ 直接替换📋 参考替代料（不在目录中）
MC9S12XEP100MAL
✅ 直接替换📋 参考替代料（不在目录中）
MC9S12XDT256CAG 最大额定值与电气特性
| 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 |
| 工作温度 | -40C to +85C |
| 封装 | 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) |
| 安装类型 | Surface Mount |
| Debug Interface | BDM (Background Debug Mode) |
| 生命周期状态 | No Longer Manufactured (per NXP product page) |
MC9S12XDT256CAG 引脚配置
| 引脚 1 | VDDX — I/O supply voltage (5V) |
| 引脚 2 | VSSX — I/O ground |
| 引脚 3 | PA0 — Port A bit 0 (GPIO/ATD channel) |
| 引脚 4 | PA1 — Port A bit 1 (GPIO/ATD channel) |
| 引脚 5 | PA2 — Port A bit 2 (GPIO/ATD channel) |
| 引脚 6 | PA3 — Port A bit 3 (GPIO/ATD channel) |
| 引脚 7 | PA4 — Port A bit 4 (GPIO/ATD channel) |
| 引脚 8 | PA5 — Port A bit 5 (GPIO/ATD channel) |
| 引脚 9 | PA6 — Port A bit 6 (GPIO/ATD channel) |
| 引脚 10 | PA7 — Port A bit 7 (GPIO/ATD channel) |
| 引脚 11 | BKGD — Background Debug Mode pin |
| 引脚 12 | XFC — PLL loop filter capacitor |
| 引脚 13 | XTAL — Crystal oscillator input |
| 引脚 14 | EXTAL — Crystal oscillator output |
| 引脚 15 | RESET — External reset input (active low) |
| 引脚 16 | VDDR — Internal regulator supply (2.5V core) |
| 引脚 17 | VSSR — Core ground |
| 引脚 18 | TEST — Test mode pin (tie to VSS) |
| 引脚 19 | VDDA — ADC supply voltage |
| 引脚 20 | VSSA — ADC ground |
| 引脚 21 | VRH — ADC high reference voltage |
| 引脚 22 | VRL — ADC low reference voltage |
| 引脚 23 | PE0 — Port E bit 0 (IRQ, XIRQ, GPIO) |
| 引脚 24 | PE1 — Port E bit 1 (IRQ, GPIO) |
| 引脚 25 | PE2 — Port E bit 2 (IRQ, GPIO) |
| 引脚 26 | PE3 — Port E bit 3 (IRQ, GPIO) |
| 引脚 27 | PE4 — Port E bit 4 (GPIO, SCI) |
| 引脚 28 | PE5 — Port E bit 5 (GPIO, SCI) |
| 引脚 29 | PE6 — Port E bit 6 (GPIO, SCI) |
| 引脚 30 | PE7 — Port E bit 7 (GPIO, SCI) |
| 引脚 31 | PH0 — Port H bit 0 (GPIO, PWM) |
| 引脚 32 | PH1 — Port H bit 1 (GPIO, PWM) |
| 引脚 33 | PH2 — Port H bit 2 (GPIO, PWM) |
| 引脚 34 | PH3 — Port H bit 3 (GPIO, PWM) |
| 引脚 35 | PH4 — Port H bit 4 (GPIO, PWM) |
| 引脚 36 | PH5 — Port H bit 5 (GPIO, PWM) |
| 引脚 37 | PH6 — Port H bit 6 (GPIO, PWM) |
| 引脚 38 | PH7 — Port H bit 7 (GPIO, PWM) |
| 引脚 39 | PJ0 — Port J bit 0 (GPIO, CAN0) |
| 引脚 40 | PJ1 — Port J bit 1 (GPIO, CAN0) |
| 引脚 41 | PJ2 — Port J bit 2 (GPIO, CAN1) |
| 引脚 42 | PJ3 — Port J bit 3 (GPIO, CAN1) |
| 引脚 43 | PJ4 — Port J bit 4 (GPIO, CAN2) |
| 引脚 44 | PJ5 — Port J bit 5 (GPIO, CAN2) |
| 引脚 45 | PJ6 — Port J bit 6 (GPIO, CAN3) |
| 引脚 46 | PJ7 — Port J bit 7 (GPIO, CAN3) |
| 引脚 47 | PK0 — Port K bit 0 (GPIO, CAN4) |
| 引脚 48 | PK1 — Port K bit 1 (GPIO, CAN4) |
| 引脚 49 | PK2 — Port K bit 2 (GPIO) |
| 引脚 50 | PK3 — Port K bit 3 (GPIO) |
| 引脚 51 | PK4 — Port K bit 4 (GPIO) |
| 引脚 52 | PK5 — Port K bit 5 (GPIO) |
| 引脚 53 | PK6 — Port K bit 6 (GPIO) |
| 引脚 54 | PK7 — Port K bit 7 (GPIO) |
| 引脚 55 | PM0 — Port M bit 0 (GPIO, SPI) |
| 引脚 56 | PM1 — Port M bit 1 (GPIO, SPI) |
| 引脚 57 | PM2 — Port M bit 2 (GPIO, SPI) |
| 引脚 58 | PM3 — Port M bit 3 (GPIO, SPI) |
| 引脚 59 | PM4 — Port M bit 4 (GPIO, SPI) |
| 引脚 60 | PM5 — Port M bit 5 (GPIO, SPI) |
| 引脚 61 | PM6 — Port M bit 6 (GPIO, SPI) |
| 引脚 62 | PM7 — Port M bit 7 (GPIO, SPI) |
| 引脚 63 | PP0 — Port P bit 0 (GPIO, PWM) |
| 引脚 64 | PP1 — Port P bit 1 (GPIO, PWM) |
| 引脚 65 | PP2 — Port P bit 2 (GPIO, PWM) |
| 引脚 66 | PP3 — Port P bit 3 (GPIO, PWM) |
| 引脚 67 | PP4 — Port P bit 4 (GPIO, PWM) |
| 引脚 68 | PP5 — Port P bit 5 (GPIO, PWM) |
| 引脚 69 | PP6 — Port P bit 6 (GPIO, PWM) |
| 引脚 70 | PP7 — Port P bit 7 (GPIO, PWM) |
| 引脚 71 | PS0 — Port S bit 0 (GPIO, SPI0) |
| 引脚 72 | PS1 — Port S bit 1 (GPIO, SPI0) |
| 引脚 73 | PS2 — Port S bit 2 (GPIO, SPI0) |
| 引脚 74 | PS3 — Port S bit 3 (GPIO, SPI0) |
| 引脚 75 | PS4 — Port S bit 4 (GPIO, SPI0) |
| 引脚 76 | PS5 — Port S bit 5 (GPIO, SPI0) |
| 引脚 77 | PS6 — Port S bit 6 (GPIO, SPI0) |
| 引脚 78 | PS7 — Port S bit 7 (GPIO, SPI0) |
| 引脚 79 | PT0 — Port T bit 0 (GPIO, ECT timer) |
| 引脚 80 | PT1 — Port T bit 1 (GPIO, ECT timer) |
| 引脚 81 | PT2 — Port T bit 2 (GPIO, ECT timer) |
| 引脚 82 | PT3 — Port T bit 3 (GPIO, ECT timer) |
| 引脚 83 | PT4 — Port T bit 4 (GPIO, ECT timer) |
| 引脚 84 | PT5 — Port T bit 5 (GPIO, ECT timer) |
| 引脚 85 | PT6 — Port T bit 6 (GPIO, ECT timer) |
| 引脚 86 | PT7 — Port T bit 7 (GPIO, ECT timer) |
| 引脚 87 | AN0 — ADC analog input channel 0 (shared with PAD0) |
| 引脚 88 | AN1 — ADC analog input channel 1 (shared with PAD1) |
| 引脚 89 | AN2 — ADC analog input channel 2 (shared with PAD2) |
| 引脚 90 | AN3 — ADC analog input channel 3 (shared with PAD3) |
| 引脚 91 | AN4 — ADC analog input channel 4 (shared with PAD4) |
| 引脚 92 | AN5 — ADC analog input channel 5 (shared with PAD5) |
| 引脚 93 | AN6 — ADC analog input channel 6 (shared with PAD6) |
| 引脚 94 | AN7 — ADC analog input channel 7 (shared with PAD7) |
| 引脚 95 | PB0 — Port B bit 0 (GPIO, PWM) |
| 引脚 96 | PB1 — Port B bit 1 (GPIO, PWM) |
| 引脚 97 | PB2 — Port B bit 2 (GPIO, PWM) |
| 引脚 98 | PB3 — Port B bit 3 (GPIO, PWM) |
| 引脚 99 | PB4 — Port B bit 4 (GPIO, PWM) |
| 引脚 100 | PB5 — Port B bit 5 (GPIO, PWM) |
| 引脚 101 | PB6 — Port B bit 6 (GPIO, PWM) |
| 引脚 102 | PB7 — Port B bit 7 (GPIO, PWM) |
| 引脚 103 | PC0 — Port C bit 0 (GPIO) |
| 引脚 104 | PC1 — Port C bit 1 (GPIO) |
| 引脚 105 | PC2 — Port C bit 2 (GPIO) |
| 引脚 106 | PC3 — Port C bit 3 (GPIO) |
| 引脚 107 | PC4 — Port C bit 4 (GPIO) |
| 引脚 108 | PC5 — Port C bit 5 (GPIO) |
| 引脚 109 | PC6 — Port C bit 6 (GPIO) |
| 引脚 110 | PC7 — Port C bit 7 (GPIO) |
| 引脚 111 | PD0 — Port D bit 0 (GPIO, SCI) |
| 引脚 112 | PD1 — Port D bit 1 (GPIO, SCI) |
| 引脚 113 | PD2 — Port D bit 2 (GPIO, SPI) |
| 引脚 114 | PD3 — Port D bit 3 (GPIO, SPI) |
| 引脚 115 | PD4 — Port D bit 4 (GPIO, SPI) |
| 引脚 116 | PD5 — Port D bit 5 (GPIO, SPI) |
| 引脚 117 | PD6 — Port D bit 6 (GPIO, SPI) |
| 引脚 118 | PD7 — Port D bit 7 (GPIO, SPI) |
| 引脚 119 | PF0 — Port F bit 0 (GPIO, ECT) |
| 引脚 120 | PF1 — Port F bit 1 (GPIO, ECT) |
| 引脚 121 | PF2 — Port F bit 2 (GPIO, ECT) |
| 引脚 122 | PF3 — Port F bit 3 (GPIO, ECT) |
| 引脚 123 | PF4 — Port F bit 4 (GPIO, ECT) |
| 引脚 124 | PF5 — Port F bit 5 (GPIO, ECT) |
| 引脚 125 | PF6 — Port F bit 6 (GPIO, ECT) |
| 引脚 126 | PF7 — Port F bit 7 (GPIO, ECT) |
| 引脚 127 | PG0 — Port G bit 0 (GPIO) |
| 引脚 128 | PG1 — Port G bit 1 (GPIO) |
| 引脚 129 | PG2 — Port G bit 2 (GPIO) |
| 引脚 130 | PG3 — Port G bit 3 (GPIO) |
| 引脚 131 | PG4 — Port G bit 4 (GPIO) |
| 引脚 132 | PG5 — Port G bit 5 (GPIO) |
| 引脚 133 | PG6 — Port G bit 6 (GPIO) |
| 引脚 134 | PG7 — Port G bit 7 (GPIO) |
| 引脚 135 | VDDX — I/O supply voltage (5V) |
| 引脚 136 | VSSX — I/O ground |
| 引脚 137 | VDDR — Internal regulator supply (2.5V core) |
| 引脚 138 | VSSR — Core ground |
| 引脚 139 | CAN0TX — CAN0 transmit (alternate function) |
| 引脚 140 | CAN0RX — CAN0 receive (alternate function) |
| 引脚 141 | CAN1TX — CAN1 transmit (alternate function) |
| 引脚 142 | CAN1RX — CAN1 receive (alternate function) |
| 引脚 143 | CAN4TX — CAN4 transmit (alternate function) |
| 引脚 144 | CAN4RX — CAN4 receive (alternate function) |
典型应用
MC9S12XDT256CAG 适用于 7 应用s: 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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： MC9S12XDT256CAG ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | 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 |
关键差异点
- 5 MSCAN channels - among the highest CAN density in HCS12X family （对比 MC9S12XD256MAG)
- 256 KB Flash with XGATE - balanced code size and peripheral processing （对比 MC9S12XDP512MAG)
- Tier-A drop-in compatibility across S12XD family （对比 MC9S12XEP100MAL)
设计说明
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.
合规信息
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].
