MC9S12A256BCPV - 16-bit HCS12 MCU 256KB Flash 112-LQFP | NXP
部品番号: MC9S12A256BCPV ✗ 生産終了| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $18.5 | $18.50 |
| 10 | $16.2 | $162.00 |
| 100 | $13.85 | $1,385.00 |
| 500 | $11.9 | $5,950.00 |
| 1,000 | $10.45 | $10,450.00 |
MC9S12A256BCPV 概要
An HCS12 microcontroller is a 16-bit CISC (Complex Instruction Set Computer) MCU from the Motorola/Freescale lineage now maintained by NXP Semiconductors. It belongs to the broader hierarchy: microcontroller -> embedded microcontroller -> 16-bit MCU -> automotive microcontroller. The HCS12 architecture improves on the earlier HC11/HC12 by adding a 16-bit data path, a richer instruction set, and an enhanced integration module (SIM) for system-level resource mapping.
Key features of the MC9S12A256BCPV include 256 KB Flash, 12 KB RAM, an integrated CAN 2.0 module, multiple SCI/SPI serial interfaces, an 8-channel 10-bit ADC, and PWM outputs suitable for motor and actuator control. The 112-LQFP package exposes a wide external bus that can be configured to 8-bit narrow mode for memory interfacing, allowing designers to attach external peripherals or memory.
The device is built on a mature 0.5 um process and uses the HCS12 CPU with a background debug mode (BDM) for non-intrusive in-circuit debugging. The system integration module (SIM) governs clock generation, interrupt control, and chip-select routing, simplifying the BOM for body controllers. With 25 MHz bus speed, the device delivers up to 25 MIPS, suitable for closed-loop control loops in automotive subsystems.
Typical applications include automotive body controllers, instrument clusters, HVAC control modules, lighting controllers, and CAN node endpoints. The integrated CAN 2.0 controller and large Flash make it a drop-in solution for legacy automotive ECUs and a wide range of industrial control nodes that require CAN connectivity and deterministic 16-bit performance.
When designing with this part, allocate adequate decoupling on each supply pin and respect the 2.35V to 5.25V operating range. For low-power standby, use the STOP and WAIT modes controlled through the SIM. Engineers transitioning from the older HC11/HC12 will find instruction-level compatibility, easing firmware porting.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, helping engineers evaluate the MC9S12A256BCPV for new designs and legacy drop-in replacement scenarios.
ドロップイン代替品: MC9S12A256BCPV — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: MC9S12A256BCPV （同一形状・フットプリント） — 相違点: ADC, Connectivity, Core Architecture, Package / Case, Peripherals.
クイック比較ツール — 並列比較する代替部品を選択:
MC9S12A256BCPVE
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MC9S12A256CPV
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MC9S12A256CPVE
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MC9S12DG256BCPV
✅ ドロップイン✓ 在庫あり
$22.4 / 個
データシートを見る →MC9S12XET256MAL
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MC9S12XEQ512MAL
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MC9S12DG128CPVE
✅ ドロップイン📋 参考代替品（カタログ未掲載）
HD64F36094GFZWV
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MC9S12A256BCPV 最大定格＆電気的特性
| Core Architecture | HCS12 (16-bit CISC) |
| データバス幅 | 16-bit |
| 最大クロック周波数 | 25 MHz |
| Program Memory Size | 256 KB (256K x 8) Flash |
| RAM Size | 12 KB |
| Supply Voltage - Operating | 2.35 V to 5.25 V |
| Operating Supply Voltage (Nominal) | 2.5 V / 5 V |
| パッケージ / ケース | 112-LQFP (20x20 mm) |
| 実装タイプ | Surface Mount |
| ADC | 8-channel 10-bit |
| Connectivity | CAN, SCI, SPI |
| Peripherals | PWM, Watchdog, BDM |
| RoHS ステータス | Compliant |
| ハロゲンフリー | Not Halogen Free (per cross-reference data) |
| ECC | EAR99 |
| Country of Origin | United States of America |
| Introduction Date | February 26, 2002 |
MC9S12A256BCPV ピン構成
| ピン 1 | XADDR0 — External address bus bit 0 |
| ピン 2 | XADDR1 — External address bus bit 1 |
| ピン 3 | XADDR2 — External address bus bit 2 |
| ピン 4 | XADDR3 — External address bus bit 3 |
| ピン 5 | XADDR4 — External address bus bit 4 |
| ピン 6 | VDDR — Voltage regulator supply |
| ピン 7 | VSS — Digital ground |
| ピン 8 | VDD — Digital supply 2.5V/5V |
| ピン 9 | XADDR5 — External address bus bit 5 |
| ピン 10 | XADDR6 — External address bus bit 6 |
| ピン 11 | XADDR7 — External address bus bit 7 |
| ピン 12 | XADDR8 — External address bus bit 8 |
| ピン 13 | XADDR9 — External address bus bit 9 |
| ピン 14 | XADDR10 — External address bus bit 10 |
| ピン 15 | XADDR11 — External address bus bit 11 |
| ピン 16 | XADDR12 — External address bus bit 12 |
| ピン 17 | XADDR13 — External address bus bit 13 |
| ピン 18 | XADDR14 — External address bus bit 14 |
| ピン 19 | XADDR15 — External address bus bit 15 |
| ピン 20 | VDDX — I/O supply |
| ピン 21 | VSSX — I/O ground |
| ピン 22 | DATA0 — External data bus bit 0 |
| ピン 23 | DATA1 — External data bus bit 1 |
| ピン 24 | DATA2 — External data bus bit 2 |
| ピン 25 | DATA3 — External data bus bit 3 |
| ピン 26 | DATA4 — External data bus bit 4 |
| ピン 27 | DATA5 — External data bus bit 5 |
| ピン 28 | DATA6 — External data bus bit 6 |
| ピン 29 | DATA7 — External data bus bit 7 |
| ピン 30 | DATA8 — External data bus bit 8 |
| ピン 31 | DATA9 — External data bus bit 9 |
| ピン 32 | DATA10 — External data bus bit 10 |
| ピン 33 | DATA11 — External data bus bit 11 |
| ピン 34 | DATA12 — External data bus bit 12 |
| ピン 35 | DATA13 — External data bus bit 13 |
| ピン 36 | DATA14 — External data bus bit 14 |
| ピン 37 | DATA15 — External data bus bit 15 |
| ピン 38 | BKGD — Background Debug Mode |
| ピン 39 | RESET — External reset (active low) |
| ピン 40 | MODC — Mode control |
| ピン 41 | XTAL — Crystal oscillator input |
| ピン 42 | EXTAL — External clock input |
| ピン 43 | VSSPLL — PLL ground |
| ピン 44 | VDDPLL — PLL supply |
| ピン 45 | PE0 — Port E bit 0 |
| ピン 46 | PE1 — Port E bit 1 |
| ピン 47 | PE2 — Port E bit 2 |
| ピン 48 | PE3 — Port E bit 3 |
| ピン 49 | PE4 — Port E bit 4 |
| ピン 50 | PE5 — Port E bit 5 |
| ピン 51 | PE6 — Port E bit 6 |
| ピン 52 | PE7 — Port E bit 7 |
| ピン 53 | PAD00 — ADC channel 0 |
| ピン 54 | PAD01 — ADC channel 1 |
| ピン 55 | PAD02 — ADC channel 2 |
| ピン 56 | PAD03 — ADC channel 3 |
| ピン 57 | PAD04 — ADC channel 4 |
| ピン 58 | PAD05 — ADC channel 5 |
| ピン 59 | PAD06 — ADC channel 6 |
| ピン 60 | PAD07 — ADC channel 7 |
| ピン 61 | VRH — ADC reference high |
| ピン 62 | VRL — ADC reference low |
| ピン 63 | VDDA — ADC supply |
| ピン 64 | VSSA — ADC ground |
| ピン 65 | PA0 — Port A bit 0 |
| ピン 66 | PA1 — Port A bit 1 |
| ピン 67 | PA2 — Port A bit 2 |
| ピン 68 | PA3 — Port A bit 3 |
| ピン 69 | PA4 — Port A bit 4 |
| ピン 70 | PA5 — Port A bit 5 |
| ピン 71 | PA6 — Port A bit 6 |
| ピン 72 | PA7 — Port A bit 7 |
| ピン 73 | PB0 — Port B bit 0 |
| ピン 74 | PB1 — Port B bit 1 |
| ピン 75 | PB2 — Port B bit 2 |
| ピン 76 | PB3 — Port B bit 3 |
| ピン 77 | PB4 — Port B bit 4 |
| ピン 78 | PB5 — Port B bit 5 |
| ピン 79 | PB6 — Port B bit 6 |
| ピン 80 | PB7 — Port B bit 7 |
| ピン 81 | PC0 — Port C bit 0 |
| ピン 82 | PC1 — Port C bit 1 |
| ピン 83 | PC2 — Port C bit 2 |
| ピン 84 | PC3 — Port C bit 3 |
| ピン 85 | PC4 — Port C bit 4 |
| ピン 86 | PC5 — Port C bit 5 |
| ピン 87 | PC6 — Port C bit 6 |
| ピン 88 | PC7 — Port C bit 7 |
| ピン 89 | PD0 — Port D bit 0 |
| ピン 90 | PD1 — Port D bit 1 |
| ピン 91 | PD2 — Port D bit 2 |
| ピン 92 | PD3 — Port D bit 3 |
| ピン 93 | PD4 — Port D bit 4 |
| ピン 94 | PD5 — Port D bit 5 |
| ピン 95 | PD6 — Port D bit 6 |
| ピン 96 | PD7 — Port D bit 7 |
| ピン 97 | CAN_TX — MSCAN transmit |
| ピン 98 | CAN_RX — MSCAN receive |
| ピン 99 | TXD0 — SCI0 transmit |
| ピン 100 | RXD0 — SCI0 receive |
| ピン 101 | MOSI0 — SPI0 master out slave in |
| ピン 102 | MISO0 — SPI0 master in slave out |
| ピン 103 | SCK0 — SPI0 clock |
| ピン 104 | SS0 — SPI0 slave select |
| ピン 105 | PWM0 — PWM channel 0 |
| ピン 106 | PWM1 — PWM channel 1 |
| ピン 107 | PWM2 — PWM channel 2 |
| ピン 108 | PWM3 — PWM channel 3 |
| ピン 109 | PWM4 — PWM channel 4 |
| ピン 110 | PWM5 — PWM channel 5 |
| ピン 111 | TCLK — Timer clock input |
| ピン 112 | TEST — Factory test pin (tie low) |
主な用途
MC9S12A256BCPV の用途: 6 件s: Automotive Body Control Module, Instrument Cluster Controller, HVAC Climate Control Module, Industrial CAN Node Endpoint, Automotive Lighting Controller, Motor Control / Pump Driver.
Automotive Body Control Module
The MC9S12A256BCPV fits automotive body controllers because its 256KB Flash supports lighting, wiper, door, and seat control firmware with ample headroom for future features. The 25MHz HCS12 CPU delivers deterministic interrupt response suitable for CAN 2.0 communication with other body ECUs. Placed on the BCM PCB between the 12V battery rail (after regulation to 5V) and the CAN transceiver, it dissipates low power and exposes 91 I/O pins for switch sensing and actuator drive.
おすすめ
Instrument Cluster Controller
The MC9S12A256BCPV's 16-bit HCS12 core and 12KB RAM suit instrument-cluster gauge and telltale driving tasks. The integrated 8-channel 10-bit ADC handles analog fuel, temperature, and battery sense signals while PWM outputs drive stepper or air-core gauges. With 256KB Flash, designers can host multiple gauge layouts and diagnostic routines without external memory, keeping the BOM small.
おすすめ
HVAC Climate Control Module
In HVAC control modules, the MC9S12A256BCPV's PWM channels drive blower motors and blend-door actuators with closed-loop precision. The integrated 10-bit ADC reads cabin temperature, evaporator sensors, and potentiometers, while SCI and SPI interfaces link to the climate control user interface and remote sensors. The 2.35V to 5.25V supply range tolerates cranking transients on the 12V automotive rail.
おすすめ
Industrial CAN Node Endpoint
The MC9S12A256BCPV integrates MSCAN 2.0, making it an effective endpoint for industrial CANopen or DeviceNet nodes. Its 256KB Flash supports custom protocol stacks plus application code, while the BDM interface enables fast field firmware updates. With 91 I/O pins it can replace several discrete controllers, lowering both PCB area and bill-of-materials cost in CAN-attached sensor hubs.
おすすめ
Automotive Lighting Controller
Daytime running light, adaptive headlight, and interior lighting modules benefit from the MC9S12A256BCPV's PWM-rich peripheral set and automotive-grade supply tolerance. The HCS12 CPU generates DRL fade patterns and matrix-beam sequencing without external logic, while the CAN bus links the module to the BCM for diagnostics. A 5V-tolerant I/O bank simplifies connection to LED drivers like the NXP MC33996.
おすすめ
Motor Control / Pump Driver
The MC9S12A256BCPV drives small DC and brushless DC pumps and fans used in automotive water, oil, and fuel systems. Its PWM, timer, and ADC channels implement speed feedback loops, while the CAN interface reports diagnostics to the vehicle network. At 25MHz the CPU sustains the control math without external DSP, and 256KB Flash leaves room for sensorless algorithm libraries.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: MC9S12A256BCPV — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | MC9S12A256BCPVE | MC9S12A256CPV | MC9S12DG256BCPV | MC9S12XET256MAL | HD64F36094GFZWV |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | Renesas Electronics |
| Package | 112-LQFP (20x20) | 112-LQFP (20x20) - same | 112-LQFP (20x20) - same | 112-LQFP (20x20) - same | 112-LQFP (20x20) - same | 112-LQFP (20x20) - same |
| Flash Memory | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB | ~32 KB (-87%) |
| Core Architecture | HCS12 (16-bit CISC) | HCS12 (16-bit CISC) | HCS12 (16-bit CISC) | HCS12 (16-bit CISC) | HCS12X + XGATE | H8/300H (16-bit CISC) |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Active (legacy) | Active |
| Operating Voltage Range | 2.35 V to 5.25 V | 2.35 V to 5.25 V | 2.35 V to 5.25 V | 2.35 V to 5.25 V | 2.35 V to 5.25 V | 3.0 V to 5.5 V |
主な差別化要因
- Drop-in extended-temperature grade variant available （vs MC9S12A256BCPVE)
- Dual CAN upgrade path exists in same package （vs MC9S12DG256BCPV)
- XGATE co-processor upgrade option in same footprint （vs MC9S12XET256MAL)
設計ノート
Place a 100 nF decoupling capacitor within 5 mm of every VDD/VSS pin pair and a bulk 4.7 uF tantalum on the regulator output. The HCS12A core draws transient currents during flash programming; undersized decoupling can cause EEPROM corruption. According to NXP application note AN2724, a minimum of one bulk cap per four VDD pins is required.
Do not leave the BKGD pin floating during reset; if unused, tie it through a 10 kohm pull-up to VDDX. Floating BKGD can spuriously enter Background Debug Mode and lock out normal execution. Also verify that MODC is tied low for normal single-chip mode operation.
The 112-LQFP (20x20 mm) requires a 4-layer PCB stack-up with a continuous ground plane beneath the package to dissipate the package's thermal load. According to NXP application note AN2689, the LQFP-112 junction-to-ambient theta_JA is approximately 50 C/W on a standard JEDEC test board, so airflow or copper pours are recommended for continuous 25 MHz operation at 5 V.
For external bus operation, the 16-bit data bus and 16-bit address bus must be length-matched within 5 mm to avoid skew on the E-clock rising edge. Place 33 ohm series resistors near the data pins when driving external memory above 50 pF load. Terminate unused XIRQ and IRQ pins with 4.7 kohm pull-ups to prevent spurious interrupts.
コンプライアンス情報
RoHS compliant per NXP product page; not halogen-free per cross-reference data; AEC-Q100 qualified for automotive applications in the A256 family; ECCN: EAR99; Country of Origin: USA; obsolete per third-party cross-reference listings (introduction 2002-02-26).
