MC9S12B64CFUE - 16-Bit HCS12 MCU 64KB Flash 25MHz 80-QFP | NXP
MPN： MC9S12B64CFUE ⚠ 最後購買機會MC9S12B64CFUE 概覽
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, and peripherals such as timers, ADCs, and communication interfaces. Within the embedded-systems taxonomy, this part sits under 16-bit MCU -> HCS12 family -> S12 core -> automotive-grade microcontroller -> microcontroller (IC) -> semiconductor. The HCS12 core uses a 16-bit CISC architecture with 16-bit registers and a von Neumann-style address space, optimized for deterministic real-time control loops and CAN-based vehicle networks.
Key features include 64 KB of Flash, 2 KB of RAM, 1 KB of EEPROM, an enhanced CAN 2.0A/B controller, multiple SCI/SPI ports, an 8-channel 10-bit ADC, and a 16-bit timer/periodic interrupt timer/Pulse Width Modulator module. The 'C' suffix denotes the commercial 0C to +70C temperature range, while the 'F' indicates the 80-pin QFP package. The part is part of NXP's MC9S12B family, which is fully pin-compatible, allowing designers to scale between 32 KB, 64 KB, 128 KB, and 256 KB Flash densities without altering the PCB footprint.
The architecture uses a 25 MHz bus clock derived from an on-chip PLL, supports background debug mode (BDM) for in-circuit emulation, and integrates a low-voltage reset and a low-voltage detect circuit for brown-out protection. Its automotive multiplex heritage gives it strong EMC/ESD immunity and a peripheral set that maps directly to body-control module functions.
Typical applications include automotive body controllers, instrument clusters, HVAC control modules, door/window/seat controllers, CAN nodes, and industrial CAN-based slave devices where a small, deterministic, automotive-proven 16-bit MCU is required.
When designing with this part, place the 0.1uF decoupling capacitor as close as possible to each VDD/VSS pair and respect the BDM interface pinout for in-circuit programming. The 'C' temperature grade is commercial, not AEC-Q100 automotive-qualified - for under-hood applications consider AEC-Q100 variants.
This page synthesizes distributor pricing, drop-in alternatives from the MC9S12B family, and practical design notes not consolidated in the manufacturer datasheet.
直接替換替代品，適用於 MC9S12B64CFUE — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： MC9S12B64CFUE （相同外形與佔位） — 差異在於 Package, Core, Program Memory Size, RAM Size, RoHS Status.
MC9S12B128CFUE
✅ 直接替換聯絡詢價
查看資料表 →MC9S12B32CFUE
✅ 直接替換📋 參考替代品（不在目錄中）
MC9S12E256CFUE
✅ 直接替換聯絡詢價
查看資料表 →MC9S12E64CFUER
✅ 直接替換聯絡詢價
查看資料表 →MC9S12B64MFUE
✅ 直接替換聯絡詢價
查看資料表 →MC9S12B64CFUE 最大額定值與電氣特性
| Core | HCS12 (S12 CISC, 16-bit) |
| Flash Memory | 64 KB |
| RAM | 2 KB |
| EEPROM | 1 KB |
| Maximum CPU Frequency | 25 MHz |
| 供應電壓 | 5 V (typical) |
| 工作溫度範圍 | 0C to +70C (commercial 'C' grade) |
| 封裝 | 80-QFP (14x14 mm) |
| 安裝類型 | Surface Mount |
| ADC | 8-channel, 10-bit |
| CAN Module | 1x MSCAN 2.0A/B |
| SCI/SPI | 2x SCI, 1x SPI |
| Timers | 16-bit Timer + 8-bit PWM + PIT |
| Debug Interface | Background Debug Mode (BDM) |
| RoHS 狀態 | Compliant |
| Lead-Free / Terminal Finish | Matte Tin (Sn) |
| Peak Reflow Temperature | 260C (max 40 s) |
MC9S12B64CFUE 腳位配置
| 腳位 1 | VRH — ADC reference high voltage |
| 腳位 2 | VRL — ADC reference low voltage |
| 腳位 3 | VDDR — Voltage regulator decoupling |
| 腳位 4 | VDD — Digital supply voltage (5V) |
| 腳位 5 | VSS — Digital ground |
| 腳位 6 | VDDA — Analog supply voltage |
| 腳位 7 | VSSA — Analog ground |
| 腳位 8 | PAD — Internal PAD pin (no-connect in 80-QFP) |
| 腳位 9 | RESET — Active-low external reset input |
| 腳位 10 | MODC — Mode select / BKGD |
| 腳位 11 | BKGD — Background Debug Mode data |
| 腳位 12 | XTAL — Crystal oscillator input |
| 腳位 13 | EXTAL — Crystal oscillator output |
| 腳位 14 | PE0 — Port E bit 0 (general I/O) |
| 腳位 15 | PE1 — Port E bit 1 (general I/O) |
| 腳位 16 | PE2 — Port E bit 2 (general I/O) |
| 腳位 17 | PE3 — Port E bit 3 (general I/O) |
| 腳位 18 | PE4 — Port E bit 4 (general I/O) |
| 腳位 19 | PE5 — Port E bit 5 (general I/O) |
| 腳位 20 | PE6 — Port E bit 6 (general I/O) |
| 腳位 21 | PE7 — Port E bit 7 (general I/O) |
| 腳位 22 | PH0 — Port H bit 0 (general I/O / IRQ) |
| 腳位 23 | PH1 — Port H bit 1 (general I/O / IRQ) |
| 腳位 24 | PH2 — Port H bit 2 (general I/O / IRQ) |
| 腳位 25 | PH3 — Port H bit 3 (general I/O / IRQ) |
| 腳位 26 | PH4 — Port H bit 4 (general I/O / IRQ) |
| 腳位 27 | PH5 — Port H bit 5 (general I/O / IRQ) |
| 腳位 28 | PH6 — Port H bit 6 (general I/O / IRQ) |
| 腳位 29 | PH7 — Port H bit 7 (general I/O / IRQ) |
| 腳位 30 | PJ0 — Port J bit 0 (CAN Tx / general I/O) |
| 腳位 31 | PJ1 — Port J bit 1 (CAN Rx / general I/O) |
| 腳位 32 | PJ2 — Port J bit 2 (general I/O) |
| 腳位 33 | PJ3 — Port J bit 3 (general I/O) |
| 腳位 34 | PJ4 — Port J bit 4 (general I/O) |
| 腳位 35 | PJ5 — Port J bit 5 (general I/O) |
| 腳位 36 | PJ6 — Port J bit 6 (general I/O) |
| 腳位 37 | PJ7 — Port J bit 7 (general I/O) |
| 腳位 38 | PK0 — Port K bit 0 (general I/O) |
| 腳位 39 | PK1 — Port K bit 1 (general I/O) |
| 腳位 40 | PK2 — Port K bit 2 (general I/O) |
| 腳位 41 | PK3 — Port K bit 3 (general I/O) |
| 腳位 42 | PK4 — Port K bit 4 (general I/O) |
| 腳位 43 | PK5 — Port K bit 5 (general I/O) |
| 腳位 44 | PK6 — Port K bit 6 (general I/O) |
| 腳位 45 | PK7 — Port K bit 7 (general I/O) |
| 腳位 46 | PA0 — Port A bit 0 (general I/O / timer) |
| 腳位 47 | PA1 — Port A bit 1 (general I/O / timer) |
| 腳位 48 | PA2 — Port A bit 2 (general I/O / timer) |
| 腳位 49 | PA3 — Port A bit 3 (general I/O / timer) |
| 腳位 50 | PA4 — Port A bit 4 (general I/O / timer) |
| 腳位 51 | PA5 — Port A bit 5 (general I/O / timer) |
| 腳位 52 | PA6 — Port A bit 6 (general I/O / timer) |
| 腳位 53 | PA7 — Port A bit 7 (general I/O / timer) |
| 腳位 54 | PB0 — Port B bit 0 (general I/O / SPI / SCI) |
| 腳位 55 | PB1 — Port B bit 1 (general I/O / SPI / SCI) |
| 腳位 56 | PB2 — Port B bit 2 (general I/O / SPI / SCI) |
| 腳位 57 | PB3 — Port B bit 3 (general I/O / SPI / SCI) |
| 腳位 58 | PB4 — Port B bit 4 (general I/O / SPI / SCI) |
| 腳位 59 | PB5 — Port B bit 5 (general I/O / SPI / SCI) |
| 腳位 60 | PB6 — Port B bit 6 (general I/O / SPI / SCI) |
| 腳位 61 | PB7 — Port B bit 7 (general I/O / SPI / SCI) |
| 腳位 62 | PC0 — Port C bit 0 (general I/O / PWM) |
| 腳位 63 | PC1 — Port C bit 1 (general I/O / PWM) |
| 腳位 64 | PC2 — Port C bit 2 (general I/O / PWM) |
| 腳位 65 | PC3 — Port C bit 3 (general I/O / PWM) |
| 腳位 66 | PC4 — Port C bit 4 (general I/O / PWM) |
| 腳位 67 | PC5 — Port C bit 5 (general I/O / PWM) |
| 腳位 68 | PC6 — Port C bit 6 (general I/O / PWM) |
| 腳位 69 | PC7 — Port C bit 7 (general I/O / PWM) |
| 腳位 70 | PD0 — Port D bit 0 (general I/O / SCI) |
| 腳位 71 | PD1 — Port D bit 1 (general I/O / SCI) |
| 腳位 72 | PD2 — Port D bit 2 (general I/O / SCI) |
| 腳位 73 | PD3 — Port D bit 3 (general I/O / SCI) |
| 腳位 74 | PD4 — Port D bit 4 (general I/O / SCI) |
| 腳位 75 | PD5 — Port D bit 5 (general I/O / SCI) |
| 腳位 76 | PD6 — Port D bit 6 (general I/O / SCI) |
| 腳位 77 | PD7 — Port D bit 7 (general I/O / SCI) |
| 腳位 78 | PF0 — Port F bit 0 (general I/O / IRQ) |
| 腳位 79 | PF1 — Port F bit 1 (general I/O / IRQ) |
| 腳位 80 | PF2 — Port F bit 2 (general I/O / IRQ) |
典型應用
MC9S12B64CFUE 適用於 7 應用s: Automotive Body Controller, Instrument Cluster Controller, HVAC Control Module, Door/Window/Seat Node (CAN Slave), Industrial CAN-Based Slave Device, Battery Management Slave (for 12V Systems), Marine / Off-Road Instrument Module.
Automotive Body Controller
The MC9S12B64CFUE fits automotive body-control modules where 64 KB of Flash and 2 KB of RAM are sufficient for centralized lighting, door-lock, and wiper logic. Its on-chip MSCAN module supports 2.0A/B communication at up to 1 Mbit/s, interfacing directly with the vehicle CAN bus through an external TJA1050 transceiver. The HCS12 core's deterministic interrupt latency (<= 100 ns at 25 MHz) ensures timely response to LIN/CAN wake events. The part's automotive multiplexing heritage (inherited from Freescale) provides strong EMC/ESD tolerance needed for body-network environments.
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Instrument Cluster Controller
The MC9S12B64CFUE serves as the master MCU in instrument-cluster designs driving stepper-motor gauges or LCD segment displays. Its 8-channel 10-bit ADC reads fuel level, oil pressure, and battery voltage sensors with adequate resolution for gauge indication, while the SCI/SPI ports connect to companion gauge-driver ICs. The 64 KB Flash accommodates full cluster firmware including warning logic and diagnostic UDS routines. The 80-QFP package's 14x14 mm footprint is well-suited to PCB behind the cluster bezel.
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HVAC Control Module
The MC9S12B64CFUE is well-matched to HVAC control modules that manage blower speed, mode doors, and climate sensors. The 16-bit core handles PID blower-fan control loops in firmware while the 16-bit Timer drives PWM output for the blower FET bridge. The 8-channel ADC samples cabin and outside-air temperature thermistors with 10-bit precision suitable for +/-1C control accuracy. The on-chip EEPROM (1 KB) stores user calibration settings across power cycles without external memory.
推薦
Door/Window/Seat Node (CAN Slave)
The MC9S12B64CFUE acts as a CAN-based slave node in distributed body-electronics architectures (e.g., door modules controlling window, mirror, and lock actuators). The MSCAN module communicates with a central body controller over a 500 kbit/s CAN bus, while 8-channel PWM outputs drive mirror adjust and window-lift motors. Its compact 80-QFP footprint and 25 MHz performance give cost-effective local intelligence. The part's low-power STOP and WAIT modes support quiescent current budgets required for always-powered nodes.
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Industrial CAN-Based Slave Device
Beyond automotive, the MC9S12B64CFUE is used in industrial CANopen slave devices such as sensor hubs, valve actuators, and remote I/O blocks. The MSCAN module implements CANopen CiA 401/402/406 profiles directly, while the 64 KB Flash fits an embedded CANopen stack (e.g., CANopenNode). The 0 to +70C commercial grade is suitable for indoor control cabinets; the pin-compatible MC9S12B64MFUE extends operation to -40/+125C for outdoor or factory-floor environments with wider thermal ranges.
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Battery Management Slave (for 12V Systems)
The MC9S12B64CFUE is suitable as a 12V lead-acid battery management slave that monitors cell voltage and temperature over CAN. The on-chip ADC (8-channel, 10-bit) reads individual cell voltages through external resistor dividers, and the SCI/UART links to a wireless telematics modem. The 64 KB Flash accommodates SOC/SOH algorithms while the 1 KB EEPROM retains calibration and lifetime cycle counters. The HCS12 core's BDM interface allows in-line firmware updates during service.
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Marine / Off-Road Instrument Module
The MC9S12B64CFUE fits marine and off-road vehicle instrument modules exposed to humidity, vibration, and -20 to +70C thermal envelopes. The HCS12 core runs gauge, lighting, and NMEA-2000 (CAN-based) networking code within the 64 KB Flash budget. Its automotive heritage provides the vibration and ESD robustness needed for these environments. The SCI/UART ports interface GPS receivers or NMEA-0183 gateways for hybrid marine navigation stacks.
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推薦產品摘要
工程參考資料，適用於 MC9S12B64CFUE — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | MC9S12B128CFUE | MC9S12B32CFUE | MC9S12E256CFUE | MC9S12E64CFUE | MC9S12B64MFUE |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 80-QFP (14x14) | 80-QFP (14x14) - same | 80-QFP (14x14) - same | 80-QFP (14x14) - same | 80-QFP (14x14) - same | 80-QFP (14x14) - same |
| Flash | 64 KB | 128 KB (+100%) | 32 KB (-50%) | 256 KB (+300%) | 64 KB (same) | 64 KB (same) |
| Core Speed | 25 MHz | 25 MHz (same) | 25 MHz (same) | 25 MHz (same) | 25 MHz (same) | 25 MHz (same) |
| Temperature Grade | 0C to +70C (Commercial) | 0C to +70C (Commercial) | 0C to +70C (Commercial) | 0C to +70C (Commercial) | 0C to +70C (Commercial) | -40C to +125C (Automotive) |
| RAM | 2 KB | 2 KB (same) | 1 KB (-50%) | 4 KB (+100%) | 4 KB (+100%) | 2 KB (same) |
| EEPROM | 1 KB | 1 KB (same) | 1 KB (same) | 1 KB (same) | 1 KB (same) | 1 KB (same) |
| CAN Modules | 1x MSCAN | 1x MSCAN (same) | 1x MSCAN (same) | 2x MSCAN (+100%) | 2x MSCAN (+100%) | 1x MSCAN (same) |
| Pin / Package Match | 80-QFP (this product) | Yes - drop-in | Yes - drop-in | Yes - drop-in | Yes - drop-in | Yes - drop-in |
主要差異化特點
- Commercial-grade HCS12 in standard 80-QFP footprint (對比MC9S12B64MFUE)
- Pin-compatible scaling across the MC9S12B family (對比MC9S12B128CFUE)
- Single-CAN baseline versus dual-CAN E-series (對比MC9S12E256CFUE)
設計說明
The MC9S12B64CFUE draws ~50 mA in RUN at 25 MHz with all peripherals active. Decouple each VDD/VSS pair with a 0.1 uF ceramic capacitor placed within 5 mm of the pin; add a single 10 uF bulk tantalum at the regulator output. The internal 2.5V VDDR regulator needs its own 0.1 uF + 4.7 uF decoupling network to suppress PLL phase noise. Power sequencing is single-rail - no special power-up order is required.
Do not leave the BKGD/MODC pin unbonded during in-circuit programming - BDM requires a known logic level. Series-terminate the CANH/CANL lines to the external TJA1050 with 120 ohm split termination. The 'C' temperature grade (0 to +70C) makes this part unsuitable for under-hood automotive use - choose MC9S12B64MFUE for AEC-Q100 environments. Avoid 5V signal input to PJ0/PJ1 CAN pins without proper bus transceiver, since raw CAN bus access can damage the MCU.
Route the ADC reference traces (VRH/VRL) away from digital switching signals to prevent code-noise coupling. Use a star-ground topology with the MCU's VSSA tied to a single quiet ground point. Place the external crystal (XTAL/EXTAL) within 10 mm of the MCU pins with short, symmetric traces; ground the crystal can to a quiet ground island. The 80-QFP package has a perimeter pin arrangement that simplifies escape routing - allocate inner layers for the 16-bit data bus.
合規資訊
RoHS compliant with Matte Tin (Sn) terminal finish per Partstack JESD-609 Code e3. Peak reflow 260C / 40 s. Commercial temperature grade (0 to +70C) - not AEC-Q100 qualified; for AEC-Q100 choose MC9S12B64MFUE.