MC908AS60ACFN - 8-Bit HC08 MCU, 60KB Flash, 8.4MHz, 52-PLCC | NXP
MPN: MC908AS60ACFN ✗ Cuối đờiMC908AS60ACFN Tóm tắt
An MCU (microcontroller unit) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash/ROM), volatile working memory (RAM), and a configurable set of on-chip peripherals (timers, ADC, communication controllers, GPIO). MCUs occupy the bottom of the embedded system hierarchy (MCU -> embedded controller -> SoC -> computer) and are the workhorse of deterministic real-time control in automotive body electronics, industrial PLCs, consumer white goods, and motor control. The HC08 family is NXP/Freescale's legacy 8-bit architecture optimized for low cost, low power, and predictable interrupt latency.
Key features of the MC908AS60ACFN include 60KB (60K x 8) of Flash, 2KB of EEPROM for data storage, 1KB of RAM, 8.4 MHz maximum internal bus frequency, an integrated 8-channel 8-bit ADC, two 16-bit timer channels, MSCAN (Motorola Scalable CAN) module for CAN 2.0A/B, and an operating voltage range of 4.5V to 5.5V. The 52-pin PLCC package supports through-hole and socket mounting, making it convenient for legacy designs, prototyping, and field-replaceable modules. The Flash memory supports in-application programming via a background debug mode (BDM) interface.
The MC908AS60ACFN's MSCAN module implements CAN 2.0A and 2.0B active and passive error counters, programmable bit timing, and a flexible acceptance filter, enabling reliable communication on automotive CAN buses at 1 Mbit/s. The integrated EEPROM emulates 2KB of byte-erasable non-volatile storage suitable for parameter retention across power cycles without external EEPROM ICs. The 8-channel ADC supports both single-ended and differential conversions with 8-bit resolution, suitable for sensor monitoring and battery management.
Typical applications include automotive body controllers, HVAC control modules, instrument clusters, simple motor control (small DC and stepper), industrial sensor interfaces, and legacy appliance control boards that require a CAN interface and small Flash footprint. The 52-pin PLCC socketed package is favored in automotive production lines where field rework and firmware updates are routine.
When designing with this part, note that the PLCC package is socket-friendly but consumes substantially more PCB area than a QFP equivalent. Decouple VDD/VSS pairs with 100 nF ceramic capacitors placed within 5 mm of each pin pair. Use the BDM (Background Debug Mode) interface for in-circuit programming and debug, and reserve a 4-pin header for the BDM pod.
This page consolidates distributor pricing, parametric data, and practical design notes for engineers maintaining legacy HC08 designs and evaluating long-term sourcing options for the MC908AS60ACFN.
Bộ thay thế dễ dàng lắp đặt cho MC908AS60ACFN — 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 MC908AS60ACFN (cùng hình factor và footprint) — khác nhau ở Core Architecture, EEPROM Size, Mounting Type, Package.
MC908AS60AVFN
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
MC68HC908AS60ACFN
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
MC908AS60ACFNE
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC908AZ60ACFN
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
MC908AZ60AVFN
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
MC908AS60ACFN Tỷ lệ tối đa & tính chất điện
| Core Architecture | HC08 (CPU08) |
| Bề rộng đường dữ liệu | 8 bit |
| Program Memory Size | 60 KB (60K x 8) Flash |
| RAM Size | 1 KB |
| EEPROM Size | 2 KB |
| Tần số xung maksimum | 8.4 MHz |
| Điện áp cung cấp hoạt động | 4.5 V to 5.5 V |
| ADC Channels | 8 channels, 8-bit |
| Communication Interfaces | 1x SCI, 1x SPI, 1x MSCAN (CAN 2.0A/B) |
| Timer Modules | 2 x 16-bit TIM |
| Hộp | 52-PLCC (19.1 x 19.1 mm) |
| Kiểu lắp đặt | Surface Mount / Socket |
| Programming Interface | Background Debug Mode (BDM) |
Cấu hình chân MC908AS60ACFN
| Chân 1 | PTB0/TxCAN — Port B bit 0 / MSCAN transmit |
| Chân 2 | PTB1/RxCAN — Port B bit 1 / MSCAN receive |
| Chân 3 | PTB2 — Port B bit 2 (general I/O) |
| Chân 4 | PTB3 — Port B bit 3 (general I/O) |
| Chân 5 | PTB4 — Port B bit 4 (general I/O) |
| Chân 6 | PTB5 — Port B bit 5 (general I/O) |
| Chân 7 | PTB6 — Port B bit 6 (general I/O) |
| Chân 8 | PTB7 — Port B bit 7 (general I/O) |
| Chân 9 | VDD — Supply voltage (5V) |
| Chân 10 | VSS — Ground |
| Chân 11 | PTD0/SS — Port D bit 0 / SPI slave select |
| Chân 12 | PTD1/MISO — Port D bit 1 / SPI MISO |
| Chân 13 | PTD2/MOSI — Port D bit 2 / SPI MOSI |
| Chân 14 | PTD3/SPSCK — Port D bit 3 / SPI clock |
| Chân 15 | PTC0/TxD — Port C bit 0 / SCI transmit |
| Chân 16 | PTC1/RxD — Port C bit 1 / SCI receive |
| Chân 17 | PTC2 — Port C bit 2 (general I/O) |
| Chân 18 | PTC3 — Port C bit 3 (general I/O) |
| Chân 19 | PTC4 — Port C bit 4 (general I/O) |
| Chân 20 | PTC5 — Port C bit 5 (general I/O) |
| Chân 21 | PTC6 — Port C bit 6 (general I/O) |
| Chân 22 | PTC7 — Port C bit 7 (general I/O) |
| Chân 23 | VDDR — Voltage regulator bypass |
| Chân 24 | VDD — Supply voltage (5V) |
| Chân 25 | VSS — Ground |
| Chân 26 | BKGD — Background Debug Mode |
| Chân 27 | RESET — External reset (active low) |
| Chân 28 | PTA0 — Port A bit 0 (general I/O / ADC ch0) |
| Chân 29 | PTA1 — Port A bit 1 (general I/O / ADC ch1) |
| Chân 30 | PTA2 — Port A bit 2 (general I/O / ADC ch2) |
| Chân 31 | PTA3 — Port A bit 3 (general I/O / ADC ch3) |
| Chân 32 | PTA4 — Port A bit 4 (general I/O / ADC ch4) |
| Chân 33 | PTA5 — Port A bit 5 (general I/O / ADC ch5) |
| Chân 34 | PTA6 — Port A bit 6 (general I/O / ADC ch6) |
| Chân 35 | PTA7 — Port A bit 7 (general I/O / ADC ch7) |
| Chân 36 | TCLK — Timer clock input |
| Chân 37 | IRQ — External interrupt request |
| Chân 38 | PTE0/TCH0 — Port E bit 0 / Timer channel 0 |
| Chân 39 | PTE1/TCH1 — Port E bit 1 / Timer channel 1 |
| Chân 40 | PTE2 — Port E bit 2 (general I/O) |
| Chân 41 | PTE3 — Port E bit 3 (general I/O) |
| Chân 42 | VDD — Supply voltage (5V) |
| Chân 43 | VSS — Ground |
| Chân 44 | OSC1 — Crystal oscillator input |
| Chân 45 | OSC2 — Crystal oscillator output |
| Chân 46 | XIRQ — Non-maskable interrupt |
| Chân 47 | MOD0 — Mode select 0 |
| Chân 48 | MOD1 — Mode select 1 |
| Chân 49 | RST — Reset status |
| Chân 50 | NC — Not connected (per datasheet) |
| Chân 51 | NC — Not connected (per datasheet) |
| Chân 52 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
MC908AS60ACFN phù hợp cho 6 Áp dụngs: Automotive Body Controller, HVAC Control Module, Instrument Cluster MCU, Small DC Motor Controller, Industrial Sensor Interface, Appliance Control Board (Legacy).
Automotive Body Controller
The MC908AS60ACFN's integrated MSCAN (CAN 2.0A/B) controller, 60 KB Flash, and 52-pin PLCC footprint make it a strong fit for legacy automotive body controllers (door modules, lighting controllers, seat adjusters). The on-chip CAN module eliminates the need for an external CAN transceiver controller, reducing BOM cost on 125-500 kbps body networks. The 8-channel 8-bit ADC monitors switch positions and potentiometers, while the 16-bit timers drive PWM outputs for motor speed control. PLCC socket mounting supports field-replaceable units in dealer service environments. The part is rated for the harsh automotive electrical environment (load dump, reverse battery) when paired with appropriate external protection.
Được đề xuất
HVAC Control Module
The MC908AS60ACFN's 1 KB RAM and 2 KB EEPROM provide sufficient working memory and parameter retention for HVAC control logic across power cycles (setpoint memory, calibration data). The 8.4 MHz bus frequency is fast enough for slow control loops (temperature sampling at 1 Hz, fan PWM at 100 Hz). The 52-PLCC package is convenient for HVAC control board designs that may need field firmware updates. The SCI (Serial Communications Interface) handles the LIN or UART link to the HVAC user interface panel. The Flash memory supports BDM-based in-circuit firmware updates, allowing post-production calibration refinement.
Được đề xuất
Instrument Cluster MCU
The MC908AS60ACFN is suitable for low-end instrument cluster designs that drive gauges, indicator LEDs, and read switches/sensors over CAN. The 60 KB Flash accommodates cluster firmware, gauge lookup tables, and warning-logic code. The 8-channel ADC reads fuel-level, temperature, and oil-pressure sensors. The SPI port drives LED or stepper-motor gauge drivers, while the SCI/UART links to a remote diagnostic interface. The 52-PLCC socketed package simplifies cluster-level rework in production. For higher-resolution gauge designs, migrate to the MC908AZ60ACFN's 10-bit ADC variant in the same 52-PLCC footprint.
Được đề xuất
Small DC Motor Controller
The MC908AS60ACFN's two 16-bit timer channels generate complementary PWM outputs suitable for brushed DC and small stepper motor control in automotive actuators (window lift, mirror adjust, headlight level). The 8.4 MHz bus frequency gives a 60 ns timer resolution, sufficient for 1 kHz PWM with 0.1% duty-cycle control. The Flash memory stores motor calibration tables and current-limit profiles, while the EEPROM retains fault logs across power cycles. The 5V supply aligns directly with automotive 12V battery rails after a 5V regulator. The MSCAN module enables networked actuators on the body CAN bus.
Được đề xuất
Industrial Sensor Interface
The MC908AS60ACFN's SCI (UART) interface, 8-channel ADC, and 52-pin PLCC footprint suit legacy industrial sensor-interface designs that aggregate analog and digital signals and forward them over RS-232/RS-485 or CAN. The 60 KB Flash holds sensor-linearization tables and protocol-conversion code. The 2 KB EEPROM stores calibration coefficients that survive power cycles. The 4.5-5.5V supply range tolerates industrial 5V rails. PLCC socket mounting supports field replacement in long-lifecycle industrial installations. For new industrial IoT designs, migrate to a Kinetis E or Cortex-M0+ part with modern peripherals.
Được đề xuất
Appliance Control Board (Legacy)
The MC908AS60ACFN's 60 KB Flash and integrated CAN option make it a cost-effective MCU for legacy white-goods and appliance control boards (washing machines, dishwashers, ovens) where deterministic 8-bit control is sufficient. The 8-channel ADC reads temperature, water level, and motor current sensors; the timers drive TRIAC and relay outputs. The Flash supports in-application firmware updates via BDM, simplifying manufacturing calibration and field firmware refreshes. The 52-PLCC socketed package is preferred by service technicians in long-lifecycle appliance products. For new appliance designs, consider the Kinetis E KE04 family for lower power and modern peripherals.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MC908AS60ACFN — 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 | MC908AS60AVFN | MC68HC908AS60ACFN | MC908AS60ACFNE | MC908AZ60ACFN | MC908AZ60AVFN |
|---|---|---|---|---|---|---|
| Package | 52-PLCC (19.1 x 19.1 mm) | 52-PLCC - same | 52-PLCC - same | 52-PLCC - same | 52-PLCC - same | 52-PLCC - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP / Motorola legacy | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core | HC08 CPU08, 8-bit | HC08 CPU08, 8-bit | HC08 CPU08, 8-bit | HC08 CPU08, 8-bit | HC08 CPU08, 8-bit | HC08 CPU08, 8-bit |
| Flash Memory | 60 KB | 60 KB | 60 KB | 60 KB | 60 KB | 60 KB |
| RAM Size | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB |
| EEPROM Size | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB |
| Max Clock Frequency | 8.4 MHz | 8.4 MHz | 8.4 MHz | 8.4 MHz | 8.4 MHz | 8.4 MHz |
| ADC Resolution | 8-bit | 8-bit | 8-bit | 8-bit | 10-bit | 10-bit |
| CAN Interface | MSCAN (CAN 2.0A/B) | MSCAN (CAN 2.0A/B) | MSCAN (CAN 2.0A/B) | MSCAN (CAN 2.0A/B) | MSCAN (CAN 2.0A/B) | MSCAN (CAN 2.0A/B) |
Bảo phân biệt quan trọng
- Pin-compatible upgrade path with 10-bit ADC (vsMC908AZ60ACFN)
- Wide-temperature automotive variant available (vsMC908AS60AVFN)
- Integrated MSCAN eliminates external CAN controller (vsMC68HC908AZ60A external CAN variant)
Ghi chú thiết kế
Decouple each VDD/VSS pin pair with a 100 nF ceramic capacitor placed within 5 mm of the pin. The 52-PLCC package has multiple VDD pins (9, 24, 42) and VSS pins (10, 25, 43) - all must be connected and decoupled, not just one pair. Add a bulk 10 uF tantalum or aluminum polymer capacitor near the package for transient suppression. The 5V supply rail should be regulated to within +/-5% to keep the ADC reference stable.
Place the 8 MHz crystal (or resonator) within 10 mm of the OSC1/OSC2 pins and guard the traces with a ground ring to minimize EMI pickup. Route the BDM (Background Debug Mode) signals (BKGD, RESET) to a 2x3 or 1x6 header at the PCB edge for factory programming access. Keep high-current motor outputs (PWM channels TCH0/TCH1) physically separated from analog ADC inputs on the layout to avoid ground-bounce noise coupling.
Do not confuse the MC908AS60ACFN (8-bit ADC, AS60A) with the MC908AZ60ACFN (10-bit ADC, AZ60A) when sourcing - both are 52-PLCC and pin-compatible but register layouts differ slightly in the ADC module. Verify the part marking on incoming reels to avoid mixing variants. The part is NRND; for new designs, migrate to Kinetis E KE04 family. The 52-PLCC socket should be a machined-pin type (not stamped) for reliable field replacement.
Estimated: at maximum operating frequency (8.4 MHz) and 5V supply with all peripherals active, the MC908AS60ACFN consumes approximately 50 mA, dissipating roughly 250 mW in the 52-PLCC package. With a theta_JA of approximately 45 C/W, this yields a junction temperature rise of ~11 C above ambient - well within the 125 C automotive limit. No external heatsink is required. However, in sealed automotive modules with poor airflow, derate ambient temperature by 10-15 C.
Thông tin tuân thủ
RoHS/REACH status not specified in verified web data - request C of C from distributor. The MC908AS60ACFN itself is not AEC-Q100 qualified; the MC908AS60AVFN suffix V indicates automotive temperature grade but formal AEC-Q100 status requires NXP documentation. Lead-free and halogen-free status marked unknown pending datasheet verification.
