MC9S12A256BCPV - 16-bit HCS12 MCU 256KB Flash 112-LQFP | NXP
MPN: MC9S12A256BCPV ✗ Cuối đờiMC9S12A256BCPV Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho MC9S12A256BCPV — 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 MC9S12A256BCPV (cùng hình factor và footprint) — khác nhau ở ADC, Supply Voltage, Connectivity, Core Architecture, EEPROM.
MC9S12A256BCPVE
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MC9S12A256CPV
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MC9S12A256CPVE
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MC9S12DG256BCPV
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC9S12XET256MAL
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MC9S12XEQ512MAL
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MC9S12DG128CPVE
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →HD64F36094GFZWV
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MC9S12A256BCPV Tỷ lệ tối đa & tính chất điện
| Core Architecture | HCS12 (16-bit CISC) |
| Bề rộng đường dữ liệu | 16-bit |
| Tần số xung maksimum | 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 |
| Hộp / Vỏ | 112-LQFP (20x20 mm) |
| Kiểu lắp đặt | Surface Mount |
| ADC | 8-channel 10-bit |
| Connectivity | CAN, SCI, SPI |
| Peripherals | PWM, Watchdog, BDM |
| Trạng thái RoHS | Compliant |
| Đông trùng haogen | Not Halogen Free (per cross-reference data) |
| ECC | EAR99 |
| Country of Origin | United States of America |
| Introduction Date | February 26, 2002 |
Cấu hình chân MC9S12A256BCPV
| Chân 1 | XADDR0 — External address bus bit 0 |
| Chân 2 | XADDR1 — External address bus bit 1 |
| Chân 3 | XADDR2 — External address bus bit 2 |
| Chân 4 | XADDR3 — External address bus bit 3 |
| Chân 5 | XADDR4 — External address bus bit 4 |
| Chân 6 | VDDR — Voltage regulator supply |
| Chân 7 | VSS — Digital ground |
| Chân 8 | VDD — Digital supply 2.5V/5V |
| Chân 9 | XADDR5 — External address bus bit 5 |
| Chân 10 | XADDR6 — External address bus bit 6 |
| Chân 11 | XADDR7 — External address bus bit 7 |
| Chân 12 | XADDR8 — External address bus bit 8 |
| Chân 13 | XADDR9 — External address bus bit 9 |
| Chân 14 | XADDR10 — External address bus bit 10 |
| Chân 15 | XADDR11 — External address bus bit 11 |
| Chân 16 | XADDR12 — External address bus bit 12 |
| Chân 17 | XADDR13 — External address bus bit 13 |
| Chân 18 | XADDR14 — External address bus bit 14 |
| Chân 19 | XADDR15 — External address bus bit 15 |
| Chân 20 | VDDX — I/O supply |
| Chân 21 | VSSX — I/O ground |
| Chân 22 | DATA0 — External data bus bit 0 |
| Chân 23 | DATA1 — External data bus bit 1 |
| Chân 24 | DATA2 — External data bus bit 2 |
| Chân 25 | DATA3 — External data bus bit 3 |
| Chân 26 | DATA4 — External data bus bit 4 |
| Chân 27 | DATA5 — External data bus bit 5 |
| Chân 28 | DATA6 — External data bus bit 6 |
| Chân 29 | DATA7 — External data bus bit 7 |
| Chân 30 | DATA8 — External data bus bit 8 |
| Chân 31 | DATA9 — External data bus bit 9 |
| Chân 32 | DATA10 — External data bus bit 10 |
| Chân 33 | DATA11 — External data bus bit 11 |
| Chân 34 | DATA12 — External data bus bit 12 |
| Chân 35 | DATA13 — External data bus bit 13 |
| Chân 36 | DATA14 — External data bus bit 14 |
| Chân 37 | DATA15 — External data bus bit 15 |
| Chân 38 | BKGD — Background Debug Mode |
| Chân 39 | RESET — External reset (active low) |
| Chân 40 | MODC — Mode control |
| Chân 41 | XTAL — Crystal oscillator input |
| Chân 42 | EXTAL — External clock input |
| Chân 43 | VSSPLL — PLL ground |
| Chân 44 | VDDPLL — PLL supply |
| Chân 45 | PE0 — Port E bit 0 |
| Chân 46 | PE1 — Port E bit 1 |
| Chân 47 | PE2 — Port E bit 2 |
| Chân 48 | PE3 — Port E bit 3 |
| Chân 49 | PE4 — Port E bit 4 |
| Chân 50 | PE5 — Port E bit 5 |
| Chân 51 | PE6 — Port E bit 6 |
| Chân 52 | PE7 — Port E bit 7 |
| Chân 53 | PAD00 — ADC channel 0 |
| Chân 54 | PAD01 — ADC channel 1 |
| Chân 55 | PAD02 — ADC channel 2 |
| Chân 56 | PAD03 — ADC channel 3 |
| Chân 57 | PAD04 — ADC channel 4 |
| Chân 58 | PAD05 — ADC channel 5 |
| Chân 59 | PAD06 — ADC channel 6 |
| Chân 60 | PAD07 — ADC channel 7 |
| Chân 61 | VRH — ADC reference high |
| Chân 62 | VRL — ADC reference low |
| Chân 63 | VDDA — ADC supply |
| Chân 64 | VSSA — ADC ground |
| Chân 65 | PA0 — Port A bit 0 |
| Chân 66 | PA1 — Port A bit 1 |
| Chân 67 | PA2 — Port A bit 2 |
| Chân 68 | PA3 — Port A bit 3 |
| Chân 69 | PA4 — Port A bit 4 |
| Chân 70 | PA5 — Port A bit 5 |
| Chân 71 | PA6 — Port A bit 6 |
| Chân 72 | PA7 — Port A bit 7 |
| Chân 73 | PB0 — Port B bit 0 |
| Chân 74 | PB1 — Port B bit 1 |
| Chân 75 | PB2 — Port B bit 2 |
| Chân 76 | PB3 — Port B bit 3 |
| Chân 77 | PB4 — Port B bit 4 |
| Chân 78 | PB5 — Port B bit 5 |
| Chân 79 | PB6 — Port B bit 6 |
| Chân 80 | PB7 — Port B bit 7 |
| Chân 81 | PC0 — Port C bit 0 |
| Chân 82 | PC1 — Port C bit 1 |
| Chân 83 | PC2 — Port C bit 2 |
| Chân 84 | PC3 — Port C bit 3 |
| Chân 85 | PC4 — Port C bit 4 |
| Chân 86 | PC5 — Port C bit 5 |
| Chân 87 | PC6 — Port C bit 6 |
| Chân 88 | PC7 — Port C bit 7 |
| Chân 89 | PD0 — Port D bit 0 |
| Chân 90 | PD1 — Port D bit 1 |
| Chân 91 | PD2 — Port D bit 2 |
| Chân 92 | PD3 — Port D bit 3 |
| Chân 93 | PD4 — Port D bit 4 |
| Chân 94 | PD5 — Port D bit 5 |
| Chân 95 | PD6 — Port D bit 6 |
| Chân 96 | PD7 — Port D bit 7 |
| Chân 97 | CAN_TX — MSCAN transmit |
| Chân 98 | CAN_RX — MSCAN receive |
| Chân 99 | TXD0 — SCI0 transmit |
| Chân 100 | RXD0 — SCI0 receive |
| Chân 101 | MOSI0 — SPI0 master out slave in |
| Chân 102 | MISO0 — SPI0 master in slave out |
| Chân 103 | SCK0 — SPI0 clock |
| Chân 104 | SS0 — SPI0 slave select |
| Chân 105 | PWM0 — PWM channel 0 |
| Chân 106 | PWM1 — PWM channel 1 |
| Chân 107 | PWM2 — PWM channel 2 |
| Chân 108 | PWM3 — PWM channel 3 |
| Chân 109 | PWM4 — PWM channel 4 |
| Chân 110 | PWM5 — PWM channel 5 |
| Chân 111 | TCLK — Timer clock input |
| Chân 112 | TEST — Factory test pin (tie low) |
Ứng dụng tiêu biểu
MC9S12A256BCPV phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MC9S12A256BCPV — 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 | 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 |
Bảo phân biệt quan trọng
- Drop-in extended-temperature grade variant available (vsMC9S12A256BCPVE)
- Dual CAN upgrade path exists in same package (vsMC9S12DG256BCPV)
- XGATE co-processor upgrade option in same footprint (vsMC9S12XET256MAL)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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).
