MC9S08PB8MTG - 8-Bit 20MHz S08 MCU | NXP Semiconductors
料号： MC9S08PB8MTG ✓ 量产中MC9S08PB8MTG 概述
An S08P microcontroller is an 8-bit embedded-control component combining a general-purpose processor core with flash program memory, data RAM, timers, serial interfaces, and analog peripherals. It belongs to the S08 MCU, embedded microcontroller, and embedded-processing hierarchies. These devices are commonly used for appliance controls, user interfaces, industrial products, and compact instrumentation where a 5 V-compatible architecture and deterministic embedded operation are valuable.
The MC9S08PB8MTG integrates a 12-bit analog-to-digital converter, analog comparator, operational amplifier, I2C interface, and flexible timers. Its 20 MHz clock provides processing performance for control loops, signal sampling, communications, and human-interface tasks. The 8-bit architecture and 8 KB flash capacity are appropriate for firmware that coordinates sensors, actuators, communication links, and system supervision without requiring a higher-cost application processor.
The S08P family reuses the established S08 core, intellectual property, and development tools, which can simplify migration between compatible 8-bit designs. Its 5 V operating environment and analog resources make the MC9S08PB8MTG particularly relevant to appliance controls and industrial user-interface equipment. The NXP product family also states compliance with the IEC 60730 appliance safety standard.
Typical uses include appliance control panels, digital thermometers, environmental monitors, small motor controllers, sensor nodes, and industrial interface modules. Designers can use the ADC and analog comparator for direct sensor conditioning, the amplifier for low-level analog signals, the timers for periodic measurement or PWM functions, and I2C for connecting external sensors, EEPROMs, or display and interface controllers.
PCB planning should preserve the exact TSSOP-16 footprint and provide adequate decoupling at the supply pins. Pay particular attention to analog-source grounding, exposed analog inputs, and the allocation of debug or programming signals. Because the target is an 8 KB flash MCU, firmware sizing and bootloader behavior should be reviewed before adding application features or field-upgrade capability.
This product overview combines the NXP family characteristics with practical guidance for memory planning, analog interfacing, peripheral assignment, and supply decoupling. It also organizes package, lifecycle, comparison, and sourcing information so engineers can assess whether the MC9S08PB8MTG fits a compact embedded-control design before beginning board-level implementation.
直接替换替代料： MC9S08PB8MTG ——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： MC9S08PB8MTG （相同外形与封装尺寸） ——差异在于 Flash Memory, Package, Serial Interface.
MC9S08PB12MTG
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MC9S08PB16MTG
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MC9S08PB8VTG
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →MC9S08PB12VTG
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MC9S08PB16VTG
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MC9S08PB8MTG 最大额定值与电气特性
| Microcontroller Type | 8-bit S08P microcontroller |
| 最大时钟频率 | 20 MHz |
| Flash Memory | 8 KB |
| Program Memory Organization | 8K x 8 bit |
| Data RAM | 1 KB |
| 数据总线宽度 | 8 bit |
| ADC Resolution | 12 bit |
| 工作电源电压 | 2.7 V to 5.5 V |
| Number of I/O Pins | 14 I/O |
| Minimum Operating Temperature | -40 C |
| Maximum Operating Temperature | +125 C |
| 封装 | 16-pin TSSOP |
| 安装方式 | SMD/SMT |
| Integrated Analog Resources | 1 analog comparator and 1 operational amplifier |
| Serial Interface | 1 I2C interface |
| Timer Resources | Flexible timer subsystem |
| Core | S08 8-bit core |
| Appliance Safety Standard | IEC 60730 |
MC9S08PB8MTG 16-pin tssop 引脚配置指南
MC9S08PB8MTG（16-pin tssop 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： MC9S08PB8MTG.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MC9S08PB8MTG 适用于 6 应用s: Appliance Control Panel, Industrial Sensor Interface, Digital Thermometer and Environmental Monitor, Compact Motor and Actuator Controller, Human Interface and Keypad Module, Small Motor-Control and Feedback Module.
Appliance Control Panel
The MC9S08PB8MTG fits appliance control panels because it combines an 8-bit S08 core, 14 I/O pins, a 12-bit ADC, timers, and I2C in a compact 16-pin TSSOP package. It can scan buttons, read resistive or analog sensors, drive indicators, and coordinate actuators without adding a higher-cost processor. The 2.7 V to 5.5 V operating range also supports common 3.3 V and 5 V appliance architectures. Designers should use the operational amplifier and comparator for suitable analog front ends, keep firmware within the 8 KB flash limit, and implement the required appliance safety routines for the finished product.
推荐
Industrial Sensor Interface
The MC9S08PB8MTG is well matched to compact industrial sensor interfaces because its 12-bit ADC, analog comparator, operational amplifier, I2C, and flexible timers support measurement and control in one device. Operating from 2.7 V to 5.5 V, it can interface with low-voltage sensors while retaining a 5 V-compatible architecture for industrial equipment. The 20 MHz S08 core provides timing headroom for filtering, calibration, diagnostics, and communication tasks. Layout should separate analog returns from switching-node currents, protect externally accessible sensor inputs, and verify grounding and filtering against the production noise environment.
推荐
Digital Thermometer and Environmental Monitor
A digital thermometer or environmental monitor can use the MC9S08PB8MTG's 12-bit ADC for analog sensor sampling, its timers for periodic measurements, and I2C for display or storage expansion. The 8 KB flash capacity is appropriate for compact firmware containing conversion routines, calibration, alarm thresholds, and a serial protocol. Operation from 2.7 V to 5.5 V enables deployment in both battery-oriented instruments and 5 V-powered products. Designers should select external analog and reference components for the required accuracy, apply input filtering appropriate to the sensor, and account for self-heating near the package.
推荐
Compact Motor and Actuator Controller
The MC9S08PB8MTG can coordinate small motors, valves, relays, or actuators where the timing resolution of a 20 MHz S08 core and flexible timer peripherals are useful. Its 14 I/O pins provide control and sensing channels, while the ADC and comparator support feedback from current, position, or temperature sensing. The 16-pin TSSOP package saves board area in compact equipment. Because an MCU output is not a substitute for a correctly sized driver, designers must add suitable transistor or gate-driver stages, provide flyback protection for inductive loads, and verify stall current, switching losses, and thermal margin.
推荐
Human Interface and Keypad Module
The MC9S08PB8MTG supports a compact keypad or user-interface module by scanning switches, controlling LEDs, detecting inputs, and communicating with a host through serial peripherals. I2C can connect an I/O expander when the 14 available I/O pins are insufficient, while the ADC can read analog controls such as a resistive menu selector. The 8 KB flash and 1 KB RAM suit concise interface firmware, and the 2.7 V to 5.5 V range allows shared power designs. Debounce timing, LED current limits, ESD protection, and connector grounding should be handled in the surrounding circuit.
推荐
Small Motor-Control and Feedback Module
The MC9S08PB8MTG is suitable for a small motor-control module that must combine command decoding, speed or position feedback, diagnostic sampling, and protection signaling. The 20 MHz core supports timer-based input capture and output control, while the 12-bit ADC and analog comparator can monitor feedback signals. I2C provides a path to a host controller or configuration memory. The device's 16-pin TSSOP footprint leaves board space for the power stage and protection components. Firmware should include startup limits, stall detection, debounce logic, and safe-state behavior, while the PCB must keep motor-current paths away from analog and MCU traces.
推荐
推荐产品汇总
工程参考数据： MC9S08PB8MTG ——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 | MC9S08PB12MTG | MC9S08PB16MTG | MC9S08PB8VTG | MC9S08PB12VTG | MC9S08PB16VTG |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 16-TSSOP | 16-TSSOP | 16-TSSOP | 16-TSSOP | 16-TSSOP | 16-TSSOP |
| Core | S08 8-bit core | S08 8-bit core | S08 8-bit core | S08 8-bit core | S08 8-bit core | S08 8-bit core |
| Maximum Clock Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Flash Memory | 8 KB | 12 KB | 16 KB | 8 KB | 12 KB | 16 KB |
| ADC Resolution | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit |
| Operating Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
关键差异点
- Lower flash capacity supports cost-sensitive fixed-function designs （对比 MC9S08PB16MTG)
- Same S08P hardware platform with additional program-memory headroom （对比 MC9S08PB12MTG)
- Matches the target electrical feature set in a common package （对比 MC9S08PB8VTG)
设计说明
Place the required supply bypass capacitors immediately beside the MC9S08PB8MTG power and ground pins, following the capacitor values and layout shown in the manufacturer datasheet. Keep the analog ground and digital return strategy consistent with the device's pin configuration. Avoid routing high-current load returns beneath the MCU or ADC area, and reserve the TSSOP-16 footprint without adding incompatible third-party pads.
Treat analog inputs as sensitive nodes: use short traces, place filtering capacitors near the measured pins, and keep switching regulators, relays, and motor-driver currents away from the ADC and comparator section. Define a stable analog reference and check its startup behavior. The 12-bit converter can support useful resolution, but actual accuracy also depends on noise, reference quality, source impedance, sampling time, and firmware averaging.
Confirm the linked firmware remains within the 8 KB flash limit after reserving space for a bootloader, calibration data, and application code. Also verify the 1 KB RAM budget during interrupt-heavy operation. A larger-flash S08P alternative may simplify memory planning, but it should not be substituted when qualification, certification, or the exact approved BOM requires the MC9S08PB8MTG ordering code.
Assign every unused pin according to the manufacturer pin table rather than assuming that all 16 package leads are user I/O. Preserve the documented clock, reset, programming, and analog assignments. For designs using I2C, follow the recommended pull-up arrangement and keep the bus capacitance within device limits. Programming access and debug signals should remain accessible without creating long traces next to sensitive analog inputs.
合规信息
NXP states that the S08P family meets the IEC 60730 appliance safety standard. Compliance for the exact ordering code and remaining environmental declarations is not established by the available manufacturer information.