ATTINY9-TSHR - 12MHz 1KB AVR Microcontroller | Microchip Technology
料号： ATTINY9-TSHR ✓ 量产中ATTINY9-TSHR 概述
A microcontroller is a programmable semiconductor that combines a CPU core, nonvolatile program memory, working RAM, input/output ports, and embedded peripherals on one device. The ATtiny9 belongs to the ATtiny family of AVR microcontrollers, a low-power RISC architecture commonly used for simple sensing, control, and signal-generation tasks. Its compact package and limited resource footprint make it suitable for space-constrained products rather than connectivity-heavy or high-compute systems.
The ATTINY9-TSHR provides 1 KB of ISP Flash memory, 32 bytes of SRAM, four general-purpose I/O lines, 16 general-purpose working registers, and a 16-bit timer/counter with two PWM channels. It also includes an internal oscillator, an analog-to-digital converter, a watchdog-related feature set, and an ISP programming interface. The 12 MHz maximum speed provides useful timing headroom for basic control loops, while the four I/O pins constrain designs to signals that fit the small package.
Typical applications include simple sensor nodes, LED and light-control modules, compact motor or actuator controllers, battery-powered accessories, and small embedded products that require local logic rather than a high-performance processor. The ATtiny9 family is also associated with low-power and cost-sensitive embedded systems in which deterministic timing, simple control, and compact PCB area matter more than large memory capacity or extensive communications.
The principal design trade-off is resource limitation. Four I/O pins leave little room for multiple sensors, displays, or communications peripherals, and 1 KB of Flash requires compact firmware with careful attention to library size. Use the manufacturer pin-description table when assigning tracks, and confirm that the selected ISP programming and clocking arrangement satisfies the product's startup and update requirements.
This page combines the verified ATTINY9-TSHR specifications, package information, application guidance, cross-reference alternatives, and practical design notes to help engineers evaluate this AVR microcontroller before layout and firmware development begin.
直接替换替代料： ATTINY9-TSHR ——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： ATTINY9-TSHR （相同外形与封装尺寸） ——差异在于 Package, Timer/Counter, Product Type, ADC, Program Memory Size.
ATTINY9-TS8R
✅ 直接替换联系询价
查看数据手册 →ATTINY10-TS8R
✅ 直接替换📋 参考替代料（不在目录中）
ATTINY10-TSHRA0
✅ 直接替换📋 参考替代料（不在目录中）
ATTINY4-TSHR
✅ 直接替换联系询价
查看数据手册 →ATTINY5-TSHR
✅ 直接替换联系询价
查看数据手册 →ATTINY9-TSHR 最大额定值与电气特性
| Product Type | 8-bit AVR RISC-based microcontroller |
| Program Memory Size | 1 KB (512 x 16) |
| Flash Memory Type | ISP Flash |
| RAM Size | 32 x 8 bytes |
| Number of I/O Lines | 4 |
| General-Purpose Working Registers | 16 |
| Maximum Clock Speed | 12 MHz |
| Timer/Counter | 16-bit with two PWM channels |
| ADC | Internal analog-to-digital converter |
| Oscillator | Internal oscillator |
| 封装 | SOT-23-6 |
| Packaging | Tape and reel |
| Core Processor | AVR 8-bit |
| Series | ATtiny AVR |
| Programming Interface | In-system programming |
ATTINY9-TSHR sot-23-6 引脚配置指南
ATTINY9-TSHR（sot-23-6 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： ATTINY9-TSHR.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ATTINY9-TSHR 适用于 6 应用s: Compact Sensor Node, LED and Light Control, Battery-Powered Accessory, Simple Motor or Actuator Controller, Low-Cost Consumer Control Module, Portable Measurement Instrument.
Compact Sensor Node
ATTINY9-TSHR fits a compact sensor node that needs local thresholding and control rather than high application processing. Its 1 KB of ISP Flash supports a focused firmware routine, while 32 bytes of SRAM provides limited working storage for simple state machines. The internal analog-to-digital converter can sample a basic sensor signal, and the 16-bit timer/counter with two PWM channels can support periodic sampling or actuator timing. The SOT-23-6 package helps reduce board area. Because only four general-purpose I/O lines are available, design the sensor interface around a shared bus or a simple analog threshold rather than multiple discrete signals.
推荐
LED and Light Control
ATTINY9-TSHR is appropriate for small LED, indicator, or light-sequencing modules where a dedicated controller can reduce system size. Its two PWM channels allow dimming or proportional control of two independent outputs, while the 16-bit timer/counter supports timing sequences and periodic updates. Four I/O pins are sufficient for a small button-controlled or sensor-triggered lighting design, but the developer should budget flash space carefully because animation tables and general-purpose library code can consume the 1 KB program memory quickly. The SOT-23-6 footprint supports compact LED modules and downstream lighting controls.
推荐
Battery-Powered Accessory
ATTINY9-TSHR can serve as the control element in a battery-powered accessory where the required logic is limited to a button, sensor, indicator, or simple actuator. The internal oscillator removes the need for an external clock in many designs, and the low-power AVR family is suited to reducing inactive-state consumption. Firmware should use the device's low-power operating modes, disable unused peripherals, and minimize external pull-up leakage. Its 1 KB Flash and 32-byte SRAM constrain application size, so the best results come from a tightly defined control function rather than a feature-heavy accessory. Verify sleep-mode current and wake-up behavior for the final battery design.
推荐
Simple Motor or Actuator Controller
ATTINY9-TSHR can control a small actuator when the design needs basic position, timing, or speed logic rather than advanced motion algorithms. Its two hardware PWM channels are useful for producing modulation or drive signals, and the 16-bit timer/counter supports accurate intervals and duty-cycle generation. The four I/O lines can accommodate limited direction, enable, and feedback signals, although complex H-bridge interfaces may exceed the available pins. Firmware must be concise because the program memory is only 1 KB. A MOSFET-based driver stage, current limiting, and appropriate protection are required when the controlled load exceeds the microcontroller's direct drive capability.
推荐
Low-Cost Consumer Control Module
ATTINY9-TSHR supports small consumer-control modules that perform one defined function, such as button interpretation, mode selection, timing, or status indication. Its 8-bit AVR core and 12 MHz maximum speed are sufficient for deterministic low-complexity logic, and the SOT-23-6 package reduces board footprint. The internal ADC can support a basic analog input, but the four available I/O lines constrain simultaneous interfaces. Developers should reserve flash space for boot and update logic if ISP programming is used in production, and should validate low-power behavior because unplugged or battery-operated modules are judged by standby consumption as well as active performance.
推荐
Portable Measurement Instrument
ATTINY9-TSHR can be used in a compact measurement instrument when the product only requires acquisition control, threshold comparison, calibration storage, and a simple display or data output. The internal ADC reduces the number of external analog components, while the timer/counter can establish sampling intervals or drive timing signals. Its limited 1 KB Flash and 32-byte SRAM are suitable for tightly bounded instrument firmware but not for buffering large sample sets. Use external storage or a higher-capacity MCU when calibration tables, communications protocols, or multiple sensors are required. Firmware architecture should separate sampling from display or transfer routines to keep memory use predictable.
推荐
推荐产品汇总
工程参考数据： ATTINY9-TSHR ——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 | ATTINY9-TS8R | ATTINY10-TS8R | ATTINY10-TSHRA0 | ATTINY4-TSHR | ATTINY5-TSHR |
|---|---|---|---|---|---|---|
| Package | SOT-23-6 | SOT-23-6 | SOT-23-6 | SOT-23-6 | SOT-23-6 | SOT-23-6 |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | 8-bit AVR | 8-bit AVR | 8-bit AVR | 8-bit AVR | 8-bit AVR | 8-bit AVR |
关键差异点
- Compact ATtiny resource profile （对比 ATTINY10-TS8R)
- Dedicated two-channel PWM resource （对比 ATTINY4-TSHR)
- Integrated conversion and internal timing support （对比 ATTINY5-TSHR)
设计说明
Route the ISP programming signals, power, ground, and reset-related functions according to the manufacturer pin-description table before assigning the four general-purpose I/O lines. Keep the SOT-23-6 land pattern mechanically compatible with the selected package drawing and place local supply decoupling close to the device pins. Because the package has very little pin capacity, assign the external netlist before committing the PCB footprint.
Design the supply path for the device's documented voltage limits and current behavior, including startup and ISP programming states. Place input capacitance at the supply pins and verify regulator stability with the actual wiring and load. For battery-powered designs, measure active and sleep current at the system level because external pull-ups, indicator LEDs, and ADC input networks can dominate the MCU's own consumption.
Treat the 1 KB Flash and 32-byte SRAM as hard design constraints. Avoid importing large Arduino libraries, generic protocol stacks, or elaborate display drivers without checking their compiled footprint. Also do not assume that another ATtiny device with the same SOT-23-6 outline is pin-compatible: compare reset behavior, ISP pins, I/O functions, ADC channels, timer outputs, supply limits, and fuse defaults in the manufacturer documents.
Use short, quiet routing for oscillator, reset, and ISP signals, and keep switching or high-current traces away from sensitive analog inputs. If the internal ADC monitors a low-level sensor, provide a defined return path and use grounding and filtering techniques appropriate to the signal source. Validate timing and analog behavior in the final layout because the small package can make grounding and decoupling choices especially influential.
合规信息
Compliance status was not stated in the retrieved ATTINY9-TSHR material. The AEC-Q100 field is not applicable because this part is a general-purpose microcontroller rather than an automotive-qualified device.
