MC9S08SH32MTJ - 8-bit 40MHz 32KB Flash MCU | NXP Semiconductors
料号： MC9S08SH32MTJ ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $2.57 | $2.57 |
| 10 | $2.44 | $24.40 |
| 100 | $2.25 | $225.00 |
| 500 | $2.06 | $1,030.00 |
| 1,000 | $1.93 | $1,930.00 |
MC9S08SH32MTJ 概述
An 8-bit microcontroller (MCU) is a single-chip embedded processor that integrates a CPU core, program memory (Flash), data memory (RAM), and peripherals such as timers, serial interfaces, and analog-to-digital converters on one die. Within the embedded systems hierarchy, the S08 family sits in the low-end 8-bit MCU class, positioned below 16-bit devices like the S12 and 32-bit ARM-based Kinetis parts, and is typically used where cost, simplicity, and 5V robustness matter more than raw processing power.
The MC9S08SH32MTJ belongs to the S08SH family, which NXP positions as a low-end option for 5-volt applications. Key features include a 40MHz S08 CISC core, 32KB (32K x 8) Flash program memory, 1KB RAM, and a wide peripheral set: serial communications interface (SCI), serial peripheral interface (SPI), inter-integrated circuit (I2C), and an analog-to-digital converter (ADC). According to NXP, the S08SH family is pin, tool, and software compatible with the S08SG family, offering design flexibility across the two families.
For development, the device provides a single-wire background debug interface (BDM), breakpoint capability with in-circuit debugging, and an on-chip debug (ICE) module containing two comparators and nine trigger modes with an eight-deep FIFO for storing change-of-flow address and event-only data. This eliminates the need for costly socketed emulators and lowers the barrier for low-volume firmware development.
Typical applications include automotive body electronics (the part is AEC-Q100 qualified), industrial control boards, appliance and white-goods controllers, and 5V sensor or actuator subsystems where the wide 5V operating range simplifies power design compared with 3.3V-only MCUs.
A key design consideration: the MC9S08SH32MTJ is End-of-Life per the NXP product page, so new designs should target the pin-compatible S08SG family, and existing designs should plan a last-time-buy or migration strategy.
This page synthesizes distributor pricing, drop-in alternatives, lifecycle status, and practical design notes not found in the manufacturer datasheet, giving engineers a single sourcing and migration reference as of 2026-10-18.
直接替换替代料： MC9S08SH32MTJ ——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： MC9S08SH32MTJ （相同外形与封装尺寸） ——差异在于 Packaging, Core Processor, Debug Interface, Instruction Set, Package / Case.
快速对比工具——选择替代料号进行并排对比：
MC9S08SG32CTJ
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MC9S08SH16MTJ
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$2.95 / 个
查看数据手册 →MC9S08SH4MFK
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$2.15 / 个
查看数据手册 →MC9S08SG16CTJ
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MC9S08SH32MTJ 最大额定值与电气特性
| Core Processor | S08 (8-bit CISC) |
| Core Size | 8-bit |
| Speed | 40 MHz |
| Program Memory Size | 32KB (32K x 8) Flash |
| RAM Size | 1K x 8 |
| Number of I/O | 17 |
| 电源电压 | 3.3V / 5V |
| Peripherals | SCI, SPI, I2C, ADC |
| Debug Interface | Single-wire background debug (BDM), on-chip ICE with 2 comparators, 9 trigger modes, 8-deep FIFO |
| 封装 / 外壳 | 20-TSSOP (0.173 inch, 4.40mm width) |
| 安装类型 | Surface Mount |
| Qualification | Automotive AEC-Q100 |
| Family Compatibility | Pin, tool and software compatible with S08SG family |
| 生命周期状态 | End of Life (per NXP product page) |
| Packaging | Tube |
MC9S08SH32MTJ 20-tssop (0.173 inch, 4.40mm width) 引脚配置指南
MC9S08SH32MTJ（20-tssop (0.173 inch, 4.40mm width) 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： MC9S08SH32MTJ.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MC9S08SH32MTJ 适用于 6 应用s: Automotive Body Electronics, Industrial Control Boards, Appliance and White-Goods Controllers, 5V Sensor and Actuator Subsystems, Consumer Electronics and Lighting Controls, Legacy Design Maintenance and EOL Mitigation.
Automotive Body Electronics
The MC9S08SH32MTJ is AEC-Q100 qualified, making it suitable for automotive body modules such as door control units, seat position modules, and lighting controllers. Its 5V-capable operating range tolerates the supply transients common in vehicle electrical systems, while the 40MHz S08 core handles the simple state-machine logic these modules require. The SCI and LIN-capable serial interface supports in-vehicle networking, and the ADC reads sensor inputs such as position potentiometers. Because the part is End of Life, existing automotive designs should plan migration to the pin-compatible S08SG family, which NXP confirms shares pin, tool, and software compatibility, preserving qualification effort at the board level.
推荐
Industrial Control Boards
In industrial control applications such as relay timing boards, motor start modules, and sensor hubs, the MC9S08SH32MTJ offers a robust 8-bit solution: 32KB Flash holds protocol stacks and diagnostic code, 17 I/O lines drive indicators and read switches, and the SPI/I2C peripherals connect external ADCs or EEPROMs. The 5V supply range simplifies integration with legacy 24V-system front ends that regulate down to 5V. Development is streamlined by the single-wire background debug interface and on-chip ICE module, which provide breakpoints and trace via the 8-deep FIFO without an external emulator, reducing development cost for low-volume industrial equipment.
推荐
Appliance and White-Goods Controllers
Home appliances - washing machine panels, fan speed regulators, and small heating controls - are classic 5V 8-bit MCU territory. The MC9S08SH32MTJ fits because its 32KB Flash accommodates button-debounce, display multiplexing, and safety-interlock logic, while the ADC digitizes NTC temperature sensors and user potentiometers. The wide supply range tolerates the noisy power environment of appliances with motors and relays. Its 20-TSSOP, 4.40mm-wide package suits compact single-sided or two-layer cost-optimized PCBs. For EOL replacement, the MC9S08SG32 in the same package offers identical footprint and toolchain compatibility, minimizing redesign for appliance platforms in long service lives.
推荐
5V Sensor and Actuator Subsystems
Many industrial and automotive sensors still run on 5V rails, and the MC9S08SH32MTJ natively suits these nodes: the 5V supply eliminates level-shifting to 3.3V-only MCUs, the on-chip ADC samples analog sensor outputs, and I2C/SPI links the node to a gateway controller. The SCI interface supports LIN-style point-to-point links to actuators such as small motors or valve drivers. With 1KB of RAM and 32KB Flash, the device can buffer readings, apply calibration, and run simple filtering. The single-wire debug interface allows field-firmware updates during manufacturing via bed-of-nails fixtures without dedicated connector access.
推荐
Consumer Electronics and Lighting Controls
Cost-sensitive consumer products such as LED driver controllers, small chargers, and remote-control receivers benefit from the MC9S08SH32MTJ's balance of memory and price: 32KB Flash leaves headroom for feature additions across product generations on one PCB, and the 17 I/O lines cover keypads, LEDs, and infrared receiver inputs. The 40MHz bus speed outpaces entry-level 8-bit MCUs, allowing tighter interrupt latency for IR decoding. The 20-TSSOP package supports compact layouts. Note that for new consumer designs the part's End-of-Life status makes the pin-compatible, active MC9S08SG32 the recommended starting point, since it preserves the same footprint and development environment.
推荐
Legacy Design Maintenance and EOL Mitigation
A primary real-world role of the MC9S08SH32MTJ today is sustaining long-lived products already in the field - elevator panels, metering equipment, and vehicle submodules with 10-20 year service expectations. Since NXP has marked the part End of Life, engineering teams use remaining broker stock (LCSC and Heisener showed in-stock quantities as of 2026-10-18) for last-time buys, while qualifying the S08SG family as the forward path: NXP explicitly documents pin, tool, and software compatibility, so the same 20-TSSOP footprint, CodeWarrior toolchain, and firmware base carry over. The NXP community forum also confirms S08SG and S08EL families as the recognized replacement directions for MC9S08SH devices.
推荐
推荐产品汇总
工程参考数据： MC9S08SH32MTJ ——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 | MC9S08SG32CTJ | MC9S08SH16MTJ | MC9S08SH4MFK |
|---|---|---|---|---|
| Package | 20-TSSOP (4.40mm width) | 20-TSSOP - same footprint | 20-TSSOP - same footprint | 20-TSSOP - same footprint |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core / Speed | S08 8-bit, 40 MHz | S08 8-bit, 40 MHz | S08 8-bit, 40 MHz | S08 8-bit, 40 MHz |
| Flash Memory | 32KB (32K x 8) | 32KB | 16KB | 4KB |
| Lifecycle Status | End of Life (per NXP) | Recommended replacement family (verify current status) | End of Life (same family) | End of Life (same family) |
| Pin Compatibility | Reference (S08SH, 20-TSSOP) | Pin-compatible per NXP S08SH/S08SG statement | Pin-compatible (same family) | Pin-compatible (same family) |
关键差异点
- Full 32KB Flash in a small 20-pin package （对比 MC9S08SH16MTJ)
- Active-family migration path with zero PCB rework （对比 MC9S08SG32CTJ)
- Honest trade-off: same silicon but smaller memory in family variants （对比 MC9S08SH4MFK)
设计说明
The MC9S08SH32MTJ is End of Life per the NXP product page. Do not start new designs with this part. For existing designs, verify your exact ordering suffix (MTJ = 20-TSSOP) before any substitution attempt - suffix letters encode package and temperature grade, so different S08SH32 suffixes are not footprint-compatible. Check the NXP Product Change Notice for the official discontinuance timeline and last-time-buy window before committing to a final production build.
Plan EOL mitigation around the S08SG family rather than broker stock alone. NXP documents S08SH as pin, tool, and software compatible with S08SG, and the NXP community forum lists MC9S08SG32 as a recognized replacement for MC9S08SH32. Even with pin compatibility, run your full firmware regression on the replacement die: peripheral-level differences between families (ADC channel mapping, register bit fields, oscillator trimming) can behave subtly differently. Verify RAM sizing on the replacement against the SH32's 1KB.
For the 20-TSSOP package, place the 0.1uF VDD decoupling capacitor within 2-3mm of the supply pin with a solid ground return; the wide 5V operating range of the S08SH family tolerates supply transients but does not remove the need for local bypassing, especially in automotive and appliance environments. Route the single-wire background debug (BDM) pin to a 2- or 3-pad test point so in-circuit debugging and production programming remain possible without connector cost.
合规信息
AEC-Q100 automotive qualification is stated in the Arrow distributor listing. RoHS/REACH/lead-free status is published on the NXP product page Environmental Quality section but was not captured in the verified data; consult https://www.nxp.com/part/MC9S08SH32MTJ.
