MC9S12XDT256CAG - 16-bit HCS12X MCU, 256KB Flash, 144-LQFP | NXP
MPN: MC9S12XDT256CAG ⚠ Waktu Beli TerakhirMC9S12XDT256CAG Ringkasan
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.
Alternatif penggantian untuk MC9S12XDT256CAG — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
Variasi di dalam seri ini
Model-series yang sama yang kompatibel dengan penggantian MC9S12XDT256CAG (sama faktor bentuk dan footprint) — berbeda di dalam Package, Core Processor, Supply Voltage, Operating Temperature, Connectivity.
MC9S12XDT256CAGR
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
MC9S12XDT256MAG
✅ Drop-InKontak untuk harga
Lihat Datasheet →MC9S12XDP512MAG
✅ Drop-InKontak untuk harga
Lihat Datasheet →MC9S12XD256MAG
✅ Drop-InKontak untuk harga
Lihat Datasheet →MC9S12XD256MAL
✅ Drop-InKontak untuk harga
Lihat Datasheet →MC9S12XHZ256CAG
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
MC9S12XEP100MAL
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
MC9S12XDT256CAG Rating Maksimal & Karakteristik Listrik
| 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 |
| Suhu Kerja | -40C to +85C |
| Paket | 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) |
| Tipe Mounting | Surface Mount |
| Debug Interface | BDM (Background Debug Mode) |
| Status Lingkungan Hidup | No Longer Manufactured (per NXP product page) |
Konfigurasi Pin MC9S12XDT256CAG
| Pin produk 1 | VDDX — I/O supply voltage (5V) |
| Pin produk 2 | VSSX — I/O ground |
| Pin produk 3 | PA0 — Port A bit 0 (GPIO/ATD channel) |
| Pin produk 4 | PA1 — Port A bit 1 (GPIO/ATD channel) |
| Pin produk 5 | PA2 — Port A bit 2 (GPIO/ATD channel) |
| Pin produk 6 | PA3 — Port A bit 3 (GPIO/ATD channel) |
| Pin produk 7 | PA4 — Port A bit 4 (GPIO/ATD channel) |
| Pin produk 8 | PA5 — Port A bit 5 (GPIO/ATD channel) |
| Pin produk 9 | PA6 — Port A bit 6 (GPIO/ATD channel) |
| Pin produk 10 | PA7 — Port A bit 7 (GPIO/ATD channel) |
| Pin produk 11 | BKGD — Background Debug Mode pin |
| Pin produk 12 | XFC — PLL loop filter capacitor |
| Pin produk 13 | XTAL — Crystal oscillator input |
| Pin produk 14 | EXTAL — Crystal oscillator output |
| Pin produk 15 | RESET — External reset input (active low) |
| Pin produk 16 | VDDR — Internal regulator supply (2.5V core) |
| Pin produk 17 | VSSR — Core ground |
| Pin produk 18 | TEST — Test mode pin (tie to VSS) |
| Pin produk 19 | VDDA — ADC supply voltage |
| Pin produk 20 | VSSA — ADC ground |
| Pin produk 21 | VRH — ADC high reference voltage |
| Pin produk 22 | VRL — ADC low reference voltage |
| Pin produk 23 | PE0 — Port E bit 0 (IRQ, XIRQ, GPIO) |
| Pin produk 24 | PE1 — Port E bit 1 (IRQ, GPIO) |
| Pin produk 25 | PE2 — Port E bit 2 (IRQ, GPIO) |
| Pin produk 26 | PE3 — Port E bit 3 (IRQ, GPIO) |
| Pin produk 27 | PE4 — Port E bit 4 (GPIO, SCI) |
| Pin produk 28 | PE5 — Port E bit 5 (GPIO, SCI) |
| Pin produk 29 | PE6 — Port E bit 6 (GPIO, SCI) |
| Pin produk 30 | PE7 — Port E bit 7 (GPIO, SCI) |
| Pin produk 31 | PH0 — Port H bit 0 (GPIO, PWM) |
| Pin produk 32 | PH1 — Port H bit 1 (GPIO, PWM) |
| Pin produk 33 | PH2 — Port H bit 2 (GPIO, PWM) |
| Pin produk 34 | PH3 — Port H bit 3 (GPIO, PWM) |
| Pin produk 35 | PH4 — Port H bit 4 (GPIO, PWM) |
| Pin produk 36 | PH5 — Port H bit 5 (GPIO, PWM) |
| Pin produk 37 | PH6 — Port H bit 6 (GPIO, PWM) |
| Pin produk 38 | PH7 — Port H bit 7 (GPIO, PWM) |
| Pin produk 39 | PJ0 — Port J bit 0 (GPIO, CAN0) |
| Pin produk 40 | PJ1 — Port J bit 1 (GPIO, CAN0) |
| Pin produk 41 | PJ2 — Port J bit 2 (GPIO, CAN1) |
| Pin produk 42 | PJ3 — Port J bit 3 (GPIO, CAN1) |
| Pin produk 43 | PJ4 — Port J bit 4 (GPIO, CAN2) |
| Pin produk 44 | PJ5 — Port J bit 5 (GPIO, CAN2) |
| Pin produk 45 | PJ6 — Port J bit 6 (GPIO, CAN3) |
| Pin produk 46 | PJ7 — Port J bit 7 (GPIO, CAN3) |
| Pin produk 47 | PK0 — Port K bit 0 (GPIO, CAN4) |
| Pin produk 48 | PK1 — Port K bit 1 (GPIO, CAN4) |
| Pin produk 49 | PK2 — Port K bit 2 (GPIO) |
| Pin produk 50 | PK3 — Port K bit 3 (GPIO) |
| Pin produk 51 | PK4 — Port K bit 4 (GPIO) |
| Pin produk 52 | PK5 — Port K bit 5 (GPIO) |
| Pin produk 53 | PK6 — Port K bit 6 (GPIO) |
| Pin produk 54 | PK7 — Port K bit 7 (GPIO) |
| Pin produk 55 | PM0 — Port M bit 0 (GPIO, SPI) |
| Pin produk 56 | PM1 — Port M bit 1 (GPIO, SPI) |
| Pin produk 57 | PM2 — Port M bit 2 (GPIO, SPI) |
| Pin produk 58 | PM3 — Port M bit 3 (GPIO, SPI) |
| Pin produk 59 | PM4 — Port M bit 4 (GPIO, SPI) |
| Pin produk 60 | PM5 — Port M bit 5 (GPIO, SPI) |
| Pin produk 61 | PM6 — Port M bit 6 (GPIO, SPI) |
| Pin produk 62 | PM7 — Port M bit 7 (GPIO, SPI) |
| Pin produk 63 | PP0 — Port P bit 0 (GPIO, PWM) |
| Pin produk 64 | PP1 — Port P bit 1 (GPIO, PWM) |
| Pin produk 65 | PP2 — Port P bit 2 (GPIO, PWM) |
| Pin produk 66 | PP3 — Port P bit 3 (GPIO, PWM) |
| Pin produk 67 | PP4 — Port P bit 4 (GPIO, PWM) |
| Pin produk 68 | PP5 — Port P bit 5 (GPIO, PWM) |
| Pin produk 69 | PP6 — Port P bit 6 (GPIO, PWM) |
| Pin produk 70 | PP7 — Port P bit 7 (GPIO, PWM) |
| Pin produk 71 | PS0 — Port S bit 0 (GPIO, SPI0) |
| Pin produk 72 | PS1 — Port S bit 1 (GPIO, SPI0) |
| Pin produk 73 | PS2 — Port S bit 2 (GPIO, SPI0) |
| Pin produk 74 | PS3 — Port S bit 3 (GPIO, SPI0) |
| Pin produk 75 | PS4 — Port S bit 4 (GPIO, SPI0) |
| Pin produk 76 | PS5 — Port S bit 5 (GPIO, SPI0) |
| Pin produk 77 | PS6 — Port S bit 6 (GPIO, SPI0) |
| Pin produk 78 | PS7 — Port S bit 7 (GPIO, SPI0) |
| Pin produk 79 | PT0 — Port T bit 0 (GPIO, ECT timer) |
| Pin produk 80 | PT1 — Port T bit 1 (GPIO, ECT timer) |
| Pin produk 81 | PT2 — Port T bit 2 (GPIO, ECT timer) |
| Pin produk 82 | PT3 — Port T bit 3 (GPIO, ECT timer) |
| Pin produk 83 | PT4 — Port T bit 4 (GPIO, ECT timer) |
| Pin produk 84 | PT5 — Port T bit 5 (GPIO, ECT timer) |
| Pin produk 85 | PT6 — Port T bit 6 (GPIO, ECT timer) |
| Pin produk 86 | PT7 — Port T bit 7 (GPIO, ECT timer) |
| Pin produk 87 | AN0 — ADC analog input channel 0 (shared with PAD0) |
| Pin produk 88 | AN1 — ADC analog input channel 1 (shared with PAD1) |
| Pin produk 89 | AN2 — ADC analog input channel 2 (shared with PAD2) |
| Pin produk 90 | AN3 — ADC analog input channel 3 (shared with PAD3) |
| Pin produk 91 | AN4 — ADC analog input channel 4 (shared with PAD4) |
| Pin produk 92 | AN5 — ADC analog input channel 5 (shared with PAD5) |
| Pin produk 93 | AN6 — ADC analog input channel 6 (shared with PAD6) |
| Pin produk 94 | AN7 — ADC analog input channel 7 (shared with PAD7) |
| Pin produk 95 | PB0 — Port B bit 0 (GPIO, PWM) |
| Pin produk 96 | PB1 — Port B bit 1 (GPIO, PWM) |
| Pin produk 97 | PB2 — Port B bit 2 (GPIO, PWM) |
| Pin produk 98 | PB3 — Port B bit 3 (GPIO, PWM) |
| Pin produk 99 | PB4 — Port B bit 4 (GPIO, PWM) |
| Pin produk 100 | PB5 — Port B bit 5 (GPIO, PWM) |
| Pin produk 101 | PB6 — Port B bit 6 (GPIO, PWM) |
| Pin produk 102 | PB7 — Port B bit 7 (GPIO, PWM) |
| Pin produk 103 | PC0 — Port C bit 0 (GPIO) |
| Pin produk 104 | PC1 — Port C bit 1 (GPIO) |
| Pin produk 105 | PC2 — Port C bit 2 (GPIO) |
| Pin produk 106 | PC3 — Port C bit 3 (GPIO) |
| Pin produk 107 | PC4 — Port C bit 4 (GPIO) |
| Pin produk 108 | PC5 — Port C bit 5 (GPIO) |
| Pin produk 109 | PC6 — Port C bit 6 (GPIO) |
| Pin produk 110 | PC7 — Port C bit 7 (GPIO) |
| Pin produk 111 | PD0 — Port D bit 0 (GPIO, SCI) |
| Pin produk 112 | PD1 — Port D bit 1 (GPIO, SCI) |
| Pin produk 113 | PD2 — Port D bit 2 (GPIO, SPI) |
| Pin produk 114 | PD3 — Port D bit 3 (GPIO, SPI) |
| Pin produk 115 | PD4 — Port D bit 4 (GPIO, SPI) |
| Pin produk 116 | PD5 — Port D bit 5 (GPIO, SPI) |
| Pin produk 117 | PD6 — Port D bit 6 (GPIO, SPI) |
| Pin produk 118 | PD7 — Port D bit 7 (GPIO, SPI) |
| Pin produk 119 | PF0 — Port F bit 0 (GPIO, ECT) |
| Pin produk 120 | PF1 — Port F bit 1 (GPIO, ECT) |
| Pin produk 121 | PF2 — Port F bit 2 (GPIO, ECT) |
| Pin produk 122 | PF3 — Port F bit 3 (GPIO, ECT) |
| Pin produk 123 | PF4 — Port F bit 4 (GPIO, ECT) |
| Pin produk 124 | PF5 — Port F bit 5 (GPIO, ECT) |
| Pin produk 125 | PF6 — Port F bit 6 (GPIO, ECT) |
| Pin produk 126 | PF7 — Port F bit 7 (GPIO, ECT) |
| Pin produk 127 | PG0 — Port G bit 0 (GPIO) |
| Pin produk 128 | PG1 — Port G bit 1 (GPIO) |
| Pin produk 129 | PG2 — Port G bit 2 (GPIO) |
| Pin produk 130 | PG3 — Port G bit 3 (GPIO) |
| Pin produk 131 | PG4 — Port G bit 4 (GPIO) |
| Pin produk 132 | PG5 — Port G bit 5 (GPIO) |
| Pin produk 133 | PG6 — Port G bit 6 (GPIO) |
| Pin produk 134 | PG7 — Port G bit 7 (GPIO) |
| Pin produk 135 | VDDX — I/O supply voltage (5V) |
| Pin produk 136 | VSSX — I/O ground |
| Pin produk 137 | VDDR — Internal regulator supply (2.5V core) |
| Pin produk 138 | VSSR — Core ground |
| Pin produk 139 | CAN0TX — CAN0 transmit (alternate function) |
| Pin produk 140 | CAN0RX — CAN0 receive (alternate function) |
| Pin produk 141 | CAN1TX — CAN1 transmit (alternate function) |
| Pin produk 142 | CAN1RX — CAN1 receive (alternate function) |
| Pin produk 143 | CAN4TX — CAN4 transmit (alternate function) |
| Pin produk 144 | CAN4RX — CAN4 receive (alternate function) |
Aplikasi Umum
MC9S12XDT256CAG cocok untuk 7 aplikasis: 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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk MC9S12XDT256CAG — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | 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 |
Diferensiator Kunci
- 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)
Catatan Desain
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.
Informasi Konformitas
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].
