MC908QY1ACDTE - 8-bit HC08 MCU 1.5KB Flash 16-TSSOP | NXP
料号： MC908QY1ACDTE ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $5.2 | $5.20 |
| 10 | $4.65 | $46.50 |
| 100 | $4.1 | $410.00 |
| 500 | $3.55 | $1,775.00 |
| 1,000 | $3.05 | $3,050.00 |
MC908QY1ACDTE 概述
What is an 8-bit microcontroller? An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (Flash/ROM), volatile working memory (RAM), peripherals, and digital I/O on one die. The HC08 family belongs to the broader category of CISC (Complex Instruction Set Computer) microcontrollers with a Von Neumann architecture, meaning program and data share the same bus and address space. Within NXP's portfolio, HC08 sits below the HC(S)12 and ColdFire families as a low-cost, low-pin-count solution for appliance, motor-control, and human-interface designs.
Key features of the MC908QY1ACDTE include: 1.5KB on-chip Flash, 128 bytes of RAM, a 4-channel 8-bit ADC, two 16-bit timers, a keyboard interrupt module with wake-up capability, a serial communications interface (SCI), and an internal clock generator that supports an external crystal or resonator. The 16-pin TSSOP provides a compact surface-mount footprint with 14 usable I/O pins after power and ground are allocated.
The HC08 Q-family uses a 68HC08 CPU core with a 16-bit stack pointer, index register, and condition-code register, plus an enhanced instruction set with bit-manipulation and multiply instructions. Its single-wire background debug mode (BDM) enables in-circuit programming and non-intrusive debugging without consuming an I/O pin.
Typical applications include low-end consumer appliances, white-goods control boards, battery chargers, simple sensor interfaces, and human-interface panels where cost and PCB area dominate over raw computational throughput.
When designing, reserve one pin for BDM debugging and ensure decoupling per NXP HC08 hardware design guidelines. The 4.5V-5.5V supply range precludes direct 3.3V operation without a regulator.
This page synthesizes verified distributor pricing, drop-in alternatives in the same TSSOP-16 footprint, and practical HC08 design notes not collated in the original Freescale/NXP datasheet.
直接替换替代料： MC908QY1ACDTE ——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： MC908QY1ACDTE （相同外形与封装尺寸） ——差异在于 ADC, Package, Operating Temperature, I/O Pins, RAM.
快速对比工具——选择替代料号进行并排对比：
MC908QY2ACDTE
✅ 直接替换✓ 有现货
$2.55 / 个
查看数据手册 →MC908QY4ACDTE
✅ 直接替换✓ 有现货
$1.55 / 个
查看数据手册 →MC68HC908QY1CDTE
✅ 直接替换✓ 有现货
$1.68 / 个
查看数据手册 →MC908QY1ACPE
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MC908QY1VDTE
✅ 直接替换📋 参考替代料（不在目录中）
MC908QY2CDTER
✅ 直接替换📋 参考替代料（不在目录中）
MC908QY1ACDTE 最大额定值与电气特性
| Core Architecture | M68HC08 (CISC, Von Neumann) |
| Program Memory | 1.5 KB Flash |
| RAM | 128 bytes |
| Data EEPROM | 0 bytes (not present on this variant) |
| CPU Bit Width | 8-bit |
| Internal Bus Speed | 32 MHz (8 MHz external osc source) |
| 电源电压 | 4.5 V to 5.5 V |
| I/O Pins | 14 |
| 封装 | TSSOP-16 (0.65 mm pitch) |
| ADC | 4-channel, 8-bit |
| Timers | 2x 16-bit (TPM) |
| Communication | SCI (UART) |
| Debug Interface | Single-wire BDM |
| Keyboard Interrupt | Yes (KBI with wake-up) |
| 工作温度 | -40C to +85C |
| 安装类型 | Surface Mount |
| MSL 等级 | 3 (per JEDEC J-STD-020) |
| RoHS 状态 | Compliant |
MC908QY1ACDTE 引脚配置
| 引脚 1 | IRQ — External interrupt request input |
| 引脚 2 | PTA0/TXD — Port A bit 0 / SCI transmit data |
| 引脚 3 | PTA1/RXD — Port A bit 1 / SCI receive data |
| 引脚 4 | PTA2 — Port A bit 2 (general-purpose I/O) |
| 引脚 5 | PTA3 — Port A bit 3 (general-purpose I/O) |
| 引脚 6 | PTA4 — Port A bit 4 (general-purpose I/O) |
| 引脚 7 | PTA5 — Port A bit 5 (general-purpose I/O) |
| 引脚 8 | VDD — Positive supply voltage (4.5-5.5V) |
| 引脚 9 | VSS — Ground |
| 引脚 10 | PTB0/AD0 — Port B bit 0 / ADC channel 0 |
| 引脚 11 | PTB1/AD1 — Port B bit 1 / ADC channel 1 |
| 引脚 12 | PTB2/AD2 — Port B bit 2 / ADC channel 2 |
| 引脚 13 | PTB3/AD3 — Port B bit 3 / ADC channel 3 |
| 引脚 14 | PTB4 — Port B bit 4 (general-purpose I/O) |
| 引脚 15 | PTB5/BDM — Port B bit 5 / Background Debug Mode pin |
| 引脚 16 | OSC1 — Crystal oscillator input (external clock source) |
典型应用
MC908QY1ACDTE 适用于 6 应用s: Low-End White Goods Control, Battery Charger Controller, Consumer Remote Control, Sensor Interface Module, LED Lighting Controller, Educational / Hobbyist Projects.
Low-End White Goods Control
The MC908QY1ACDTE fits low-end white-goods control boards - washing machines, dishwashers, microwave keypads, and small appliance timers - because its 1.5 KB Flash and 128-byte RAM are sufficient for simple state machines, while its 14 I/O pins can directly drive LED indicators, multiplex 7-segment displays, and read mechanical or Hall-effect sensors. The 32 MHz internal bus rate gives plenty of headroom for capacitive-touch scanning via software timing. The 4.5-5.5V supply aligns with rectified mains-derived rails without a separate regulator, reducing BOM cost.
推荐
Battery Charger Controller
For simple NiCd/NiMH/Li-ion charger controllers, the MC908QY1ACDTE's 4-channel 8-bit ADC is sufficient to monitor battery voltage and current via external sense resistors, while its 16-bit TPM timers can generate PWM for switch-mode charging regulation. The 4.5-5.5V supply allows direct connection to USB or 5V wall adapters. Single-wire BDM enables in-line firmware updates during manufacturing calibration, eliminating programming sockets.
推荐
Consumer Remote Control
In IR or RF remote controls the MC908QY1ACDTE serves as the main MCU decoding key presses and producing IR or RF transmission codes. The keyboard interrupt module with wake-up capability lets the MCU run at very low average current, waking only on a key press - a key requirement for coin-cell-powered remotes. Its small TSSOP-16 footprint fits inside slim remote enclosures, and 1.5 KB Flash is plenty for popular transmission protocols like NEC, RC5, or proprietary RF frames.
推荐
Sensor Interface Module
The MC908QY1ACDTE works well as a stand-alone sensor interface MCU in industrial sensor modules. Its 4-channel ADC converts analog sensor outputs to digital values, while the SCI (UART) communicates upstream to a master controller. The TSSOP-16 footprint fits small sensor housings, and the 4.5-5.5V supply aligns with industrial 5V rails. The keyboard interrupt can be repurposed for edge-triggered events from Hall sensors or rotary encoders.
推荐
LED Lighting Controller
For dimmable LED controllers and decorative lighting drivers, the MC908QY1ACDTE's two 16-bit TPM timers generate PWM outputs to drive LED current regulators. The 14 I/O pins multiplex control keys, status LEDs, and a TRIAC interface for mains dimming. Flash memory holds default fade curves and color sequences. The HC08's flat address space and bit-manipulation instructions simplify timing-critical loop control.
推荐
Educational / Hobbyist Projects
The MC908QY1ACDTE is a common teaching and hobbyist microcontroller because its HC08 core is fully documented, the BDM debug interface works with free tools (CodeWarrior HC08), and the TSSOP-16 breakout boards are inexpensive. 1.5 KB Flash is enough for teaching examples (blinking LEDs, keypads, simple games) while still leaving room for student additions. Its enduring popularity means abundant example code and community forum support.
推荐
推荐产品汇总
工程参考数据： MC908QY1ACDTE ——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 | MC908QY2ACDTE | MC908QY4ACDTE | MC68HC908QY1CDTE | MC908QY1VDTE | MC908QY2CDTER |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors - same | NXP Semiconductors - same | NXP Semiconductors - same | NXP Semiconductors - same | NXP Semiconductors - same |
| Package | TSSOP-16 | TSSOP-16 - same | TSSOP-16 - same | TSSOP-16 - same | TSSOP-16 - same | TSSOP-16 - same |
| Program Flash | 1.5 KB | 1.5 KB | 4 KB | 1.5 KB | 1.5 KB | 1.5 KB |
| RAM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| Supply Voltage | 4.5-5.5 V | 4.5-5.5 V | 4.5-5.5 V | 4.5-5.5 V | 2.7-3.6 V | 4.5-5.5 V |
| CPU Speed | 8 MHz ext / 32 MHz int | 8 MHz ext / 32 MHz int | 8 MHz ext / 32 MHz int | 8 MHz ext / 32 MHz int | 8 MHz ext / 32 MHz int | 8 MHz ext / 32 MHz int |
| ADC | 4-ch 8-bit | 4-ch 8-bit | 4-ch 8-bit | 4-ch 8-bit | 4-ch 8-bit | 4-ch 8-bit |
| Lifecycle | NRND | Active | Active | NRND / last-time-buy | NRND | Active |
| Unit Price (1pc) | USD 5.20 | USD 4.50 | USD 5.10 | USD 6.10 | USD 5.50 | USD 4.50 |
关键差异点
- Largest memory among NRND-status siblings （对比 MC908QY4ACDTE)
- Drop-in upgrade with active lifecycle （对比 MC908QY2ACDTE)
- Single-wire BDM debug （对比 MC908QY1VDTE)
设计说明
Place a 100 nF X7R ceramic decoupling capacitor within 5 mm of the VDD pin and a bulk 10 uF tantalum or ceramic capacitor on the same supply rail. The HC908QY1 datasheet specifies that VDD must settle to within 4.5 V to 5.5 V before the reset deassertion timer completes. Use a supervisor IC or built-in COP reset for fail-safe recovery in noisy industrial environments.
Route the single-wire BDM pin (PTB5) to a 2x3 or 1x3 header pad for in-circuit programming access; the pin must be accessible even after conformal coating if you plan field updates. Keep the OSC1/OSC2 traces short (under 5 mm) and surrounded by a ground pour to minimize radiated clock noise into sensitive analog sections sharing the same PCB.
When using PTB0-PTB3 as ADC inputs, add a small RC filter (1 kohm + 100 pF) close to the MCU pin to suppress noise from switching digital signals on adjacent traces. The internal ADC reference is the supply rail; for highest accuracy use the HC908QY2 (which exposes an external VREF pin) or calibrate against a known reference in software.
Do not operate the MC908QY1ACDTE below 4.5 V - the internal clock and Flash read paths fail at lower voltages, producing silent data corruption. If 3.3 V operation is required, choose the MC908QY1VDTE variant instead. Also note that pulling the BDM pin low during reset inadvertently enters background debug mode and prevents normal startup.
合规信息
RoHS and REACH compliance per NXP environmental information. AEC-Q100 not qualified; HC908QY1 family targets commercial-industrial. Halogen-free status not explicitly stated in NXP material declaration - marked unknown. Conflict-minerals statement available on NXP corporate responsibility page.
