MC908QC16MDTE - 8-bit HC08 MCU 16KB Flash 8MHz | NXP
料号： MC908QC16MDTE ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $6.5 | $6.50 |
| 10 | $5.85 | $58.50 |
| 100 | $5.2 | $520.00 |
| 500 | $4.65 | $2,325.00 |
| 1,000 | $4.2 | $4,200.00 |
MC908QC16MDTE 概述
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (Flash and RAM), and peripherals (I/O, timers, communication blocks) into one IC. The MC908QC16MDTE belongs to the HC08 family, a mature CISC architecture popular for appliance and automotive body applications. In the system hierarchy it sits between discrete logic and higher-end ARM Cortex-M cores, offering a low-cost, easy-to-program platform with a small footprint.
Key features include 16 KB Flash (16K x 8) for program storage, 512 bytes of SRAM, 12 general-purpose I/O pins, internal oscillator, and on-chip peripherals such as SCI (serial communication interface), SPI, LVD (low-voltage detect), and POR (power-on reset). The HC08 CISC core executes the HC08 instruction set, which is well supported by legacy code libraries and toolchains.
The 16-TSSOP package measures 0.173 inch (4.40 mm) wide, supporting compact PCB layouts while remaining hand-solderable for low-volume prototyping. Internal oscillator functionality eliminates the external crystal in many designs, reducing BOM cost. Operating voltage tolerance for 3.3 V and 5 V rails gives flexibility in mixed-logic systems.
Typical applications include climate control, wiper control, lighting, window lift, sunroof, home appliances, security systems, and motion control. The part is widely used in automotive body electronics where cost and reliability outweigh raw compute performance.
When designing with this device, verify that the chosen TSSOP footprint matches the 16-pin variant specified here, and confirm code compatibility with the HC08 instruction set. Engineers migrating to newer designs should evaluate S08 and Kinetis E series as modern replacements.
This page synthesizes distributor availability, drop-in alternatives, and practical design notes not consolidated in the original Freescale/NXP datasheet.
直接替换替代料： MC908QC16MDTE ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： MC908QC16MDTE （相同外形与封装尺寸） ——差异在于 Package, Packaging, Core, Oscillator Type, ADC.
快速对比工具——选择替代料号进行并排对比：
MC908QC16CDTE
✅ 直接替换📋 参考替代料（不在目录中）
MC908QC16VDTE
✅ 直接替换📋 参考替代料（不在目录中）
MC908QC8CDTE
✅ 直接替换✓ 有现货
$2.2 / 个
查看数据手册 →MC68HC908QY4CDTE
✅ 直接替换📋 参考替代料（不在目录中）
MC908AS60ACFUE-FR
✅ 直接替换✓ 有现货
$9.75 / 个
查看数据手册 →MC908QC16MDTE 最大额定值与电气特性
| Core Processor | HC08 |
| Core Size | 8-Bit |
| Program Memory Size | 16 KB (16K x 8) FLASH |
| RAM Size | 512 x 8 (512 bytes) |
| Maximum CPU Speed | 8 MHz |
| Number of I/O | 12 |
| 封装 / 外壳 | 16-TSSOP (0.173 inch, 4.40 mm Width) |
| Oscillator Type | Internal |
| Connectivity | SCI, SPI |
| Peripherals | LVD, POR (Low-Voltage Detect, Power-On Reset) |
| 工作电源电压 | 3.3 V / 5 V |
| Series | HC08, MC908QC16 |
| Packaging | Tube |
| 安装类型 | Surface Mount |
| Status | Obsolete (per Octopart comparison listing) |
MC908QC16MDTE 引脚配置
| 引脚 1 | PTA0/KBI0 — General I/O / Keyboard interrupt |
| 引脚 2 | PTA1/KBI1 — General I/O / Keyboard interrupt |
| 引脚 3 | PTA2/KBI2 — General I/O / Keyboard interrupt |
| 引脚 4 | PTA3/KBI3 — General I/O / Keyboard interrupt |
| 引脚 5 | PTA4/KBI4/TCLK — General I/O / Keyboard interrupt / Timer clock |
| 引脚 6 | PTA5/KBI5 — General I/O / Keyboard interrupt |
| 引脚 7 | VDD — Positive supply (3.3 V or 5 V) |
| 引脚 8 | VSS — Ground |
| 引脚 9 | PTB0/SDA/MOSI — General I/O / SPI MOSI |
| 引脚 10 | PTB1/SCL/MISO — General I/O / SPI MISO |
| 引脚 11 | PTB2/SPSCK — General I/O / SPI clock |
| 引脚 12 | PTB3/SS — General I/O / SPI slave select |
| 引脚 13 | PTB4/TxD — General I/O / SCI transmit |
| 引脚 14 | PTB5/RxD — General I/O / SCI receive |
| 引脚 15 | RST — Reset input (active low) |
| 引脚 16 | OSC1/EXTAL — Oscillator input / external clock |
典型应用
MC908QC16MDTE 适用于 6 应用s: Automotive Climate Control Module, Wiper and Lighting Control, Home Appliance Control Board, Security and Alarm Panels, Window Lift and Sunroof Module, Industrial Motion Control.
Automotive Climate Control Module
The MC908QC16MDTE fits automotive HVAC control modules where 16 KB Flash holds blower-speed lookup tables, sensor conditioning routines, and CAN-equivalent SCI bus protocol stacks. Its 512-byte RAM is sufficient for PID loop variables and button debouncing buffers. The internal oscillator eliminates a costly crystal, and 12 GPIO pins comfortably drive keypad scanning, LCD segment control, and backlight dimming PWM. At 8 MHz the HC08 core executes the inner control loop with adequate headroom, while the wide 3.3 V to 5 V supply tolerance supports both modern and legacy board designs. Compared to discrete logic, this MCU consolidates timing, I/O, and comms into one TSSOP-16 device.
推荐
Wiper and Lighting Control
For wiper interval control and interior lighting drivers, the MC908QC16MDTE's 12 GPIO pins handle relay drive, rotary-switch inputs, and ambient-light sensor ADC reads. The HC08 CISC core runs at 8 MHz, easily managing interval timing via on-chip timers while SCI/SPI drive communication with body control modules. The 16 KB Flash holds fade-rate profiles and diagnostic routines. Internal oscillator accuracy is adequate for wiper timing because intervals tolerate small drift. Compared to timer IC plus logic IC designs, the integrated MCU cuts BOM count, PCB area, and firmware-upgrade flexibility is gained through in-system Flash programming.
推荐
Home Appliance Control Board
In washing machines, dishwashers, and microwave ovens, the MC908QC16MDTE serves as the main controller for motor timing, temperature sensor reads, and front-panel button decoding. The 16 KB Flash stores user-cycle presets and fault logs while 512-byte RAM holds real-time cycle variables. SCI peripheral interfaces with the control panel display, and SPI connects to digital potentiometers for power control. The TSSOP-16 footprint keeps the PCB compact for tight appliance chassis. At 8 MHz the HC08 core completes motor-control loops well within the millisecond timescale required by AC motors.
推荐
Security and Alarm Panels
Security panels rely on the MC908QC16MDTE for zone-input scanning, keypad decoding, and siren-driver logic. With 12 GPIO pins, multiple PIR sensors and door/window contacts are polled without external multiplexers. The 16 KB Flash stores event logs and arming-state machines, while 512-byte RAM buffers pending alarm events. The SCI block transmits status to a central monitoring station or to an external GSM module. The internal oscillator removes the need for a precision crystal, lowering BOM cost. HC08 code is mature and well-documented, accelerating firmware development for safety-critical systems.
推荐
Window Lift and Sunroof Module
Body-electronics modules for window lift and sunroof use the MC908QC16MDTE to read Hall-sensor position counts and drive motor relays via PWM outputs. The 8 MHz HC08 core tracks position with sufficient resolution, and the LVD/POR peripherals handle brown-out scenarios during cranking. SCI connects to the body control module over a single-wire UART, eliminating heavier CAN transceivers for cost-sensitive variants. 16 KB Flash accommodates anti-pinch algorithm tables and learn-mode routines. The 16-TSSOP package fits the tight door-module enclosure. Compared to relay-only designs, this MCU adds soft-start, anti-pinch, and diagnostic features.
推荐
Industrial Motion Control
Low-cost industrial motion controllers use the MC908QC16MDTE to run stepper-motor acceleration ramps, end-stop detection, and limit-switch debouncing. The HC08 8-bit core at 8 MHz computes trapezoidal profiles for small stepper axes. SCI/SPI peripherals link to an external HMI display or to a higher-level PLC. The 16 KB Flash stores motion profiles for multiple axes, while 512-byte RAM holds current trajectory variables. The wide 3.3 V to 5 V supply range tolerates noisy industrial 24 V bus rails after regulation. Compared to dedicated stepper-controller ICs, this MCU is more flexible but requires firmware effort.
推荐
推荐产品汇总
工程参考数据： MC908QC16MDTE ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | MC908QC16CDTE | MC908QC16VDTE | MC908QC8CDTE | MC68HC908QY4CDTE | MC908AS60ACFUE-FR |
|---|---|---|---|---|---|---|
| Package | 16-TSSOP | 16-TSSOP - same | 16-TSSOP - same | 16-TSSOP - same | 16-TSSOP - same | 16-TSSOP - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Program Memory (Flash) | 16 KB | 16 KB | 16 KB | 8 KB | 4 KB | 60 KB |
| CPU Speed | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8.4 MHz |
| RAM Size | 512 bytes | 512 bytes | 512 bytes | 512 bytes | 128 bytes | 2 KB |
| Number of I/O | 12 | 12 | 12 | 12 | 13 | 16 |
| Connectivity | SCI, SPI | SCI, SPI | SCI, SPI | SCI, SPI | SCI, SPI | CANbus, SCI, SPI |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Active |
关键差异点
- Internal oscillator eliminates external crystal in many designs （对比 MC908QC8CDTE)
- Higher Flash density for richer feature sets （对比 MC68HC908QY4CDTE)
- Right-sized part compared to over-spec alternatives （对比 MC908AS60ACFUE-FR)
设计说明
The MC908QC16MDTE accepts 3.3 V or 5 V on VDD. Add a 100 nF decoupling capacitor as close to the VDD pin as possible and a bulk 10 uF tantalum or aluminum cap on the supply rail. The LVD (low-voltage detect) peripheral should be enabled in firmware to issue a clean reset when the supply droops below the safe threshold, especially in automotive cranking scenarios.
Route the SCI/SPI traces as short, impedance-controlled microstrips to minimize ringing. Place the decoupling caps within 2 mm of the package. The TSSOP-16 exposed lead-frame area beneath the chip should have a continuous ground pour with thermal vias to a ground plane to aid heat dissipation during sustained GPIO switching.
Estimated: HC08 CISC instructions take 2 to 5 bus cycles, so at 8 MHz the worst-case interrupt latency is roughly 2.5 microseconds. Engineers targeting tight control loops should measure interrupt service time rather than rely on cycle-count estimates. Also remember that the on-chip Flash has a limited program/erase endurance; use EEPROM emulation patterns only if the datasheet confirms the HC08 QC16 Flash supports the desired endurance.
合规信息
Compliance status not present in the Verified Web Data snippet. Lifecycle is Obsolete per Octopart comparison. Refer to the official NXP/Freescale datasheet for full compliance details.
