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ATTINY9-TSHR
Microchip Technology
IC MCU 8BIT 1KB FLASH SOT23-6
4411 Pcs New Original In Stock
AVR AVR® ATtiny Microcontroller IC 8-Bit 12MHz 1KB (512 x 16) FLASH SOT-23-6
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5.0 / 5.0
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ATTINY9-TSHR
Product Overview
1301635
DiGi Electronics Part Number
ATTINY9-TSHR-DGManufacturer
Microchip Technology
ATTINY9-TSHR
Description
IC MCU 8BIT 1KB FLASH SOT23-6Inventory
4411 Pcs New Original In Stock
AVR AVR® ATtiny Microcontroller IC 8-Bit 12MHz 1KB (512 x 16) FLASH SOT-23-6
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Minimum 1
Minimum 1
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ATTINY9-TSHR Technical Specifications
Category
Embedded, Microcontrollers
Packaging
Tape & Reel (TR)
Series
AVR® ATtiny
Product Status
Active
DiGi-Electronics Programmable
Verified
Core Processor
AVR
Core Size
8-Bit
Speed
12MHz
Connectivity
-
Peripherals
POR, PWM, WDT
Number of I/O
4
Program Memory Size
1KB (512 x 16)
Program Memory Type
FLASH
EEPROM Size
-
RAM Size
32 x 8
Voltage - Supply (Vcc/Vdd)
1.8V ~ 5.5V
Data Converters
-
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C (TA)
Mounting Type
Surface Mount
Supplier Device Package
SOT-23-6
Package / Case
SOT-23-6
Base Product Number
ATTINY9
Datasheet & Documents
HTML Datasheet
ATTINY9-TSHR-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.31.0001
Additional Information
Other Names
150-ATTINY9-TSHRCT
ATTINY9-TSHRCT
ATTINY9-TSHR SL383
ATTINY9-TSHR-DG
150-ATTINY9-TSHRDKR
ATTINY9-TSHRCT-DG
ATTINY9TSHR
150-ATTINY9-TSHRTR
ATTINY9-TSHRTR-DG
ATTINY9-TSHRTR
Standard Package
4,500
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
Der Support nach dem Kauf war schnell und effizient. Ich fühle mich bei DiGi Electronics gut aufgehoben.
Dec 02, 2025
お店の対応が丁寧で、商品も高品質でした。価格も安くて最高です。
Dec 02, 2025
Choosing DiGi means supporting a greener and more affordable future.
Dec 02, 2025
Shipping logistics coordinated perfectly, giving me confidence in their operational efficiency.
Dec 02, 2025
They consistently deliver quality products with friendly, attentive service.
Dec 02, 2025
I trust DiGi Electronics for fast delivery and excellent customer service.
Dec 02, 2025
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Dec 02, 2025
I appreciate that their packaging is both eco-conscious and practical.
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Frequently Asked Questions (FAQ)
What are the key design-in risks when using the ATTINY9-TSHR in a battery-powered sensor node, and how can they be mitigated?
A key risk when designing the ATTINY9-TSHR into a battery-powered sensor node is inefficient power management due to improper use of sleep modes or peripheral configuration. The ATTINY9-TSHR supports ultra-low-power operation, but unused I/O pins left floating or internal pull-ups enabled unnecessarily can increase leakage current. To mitigate this, configure all unused pins as outputs driven low or set to input with explicit pull-downs. Use the internal watchdog timer (WDT) for periodic wake-up instead of external circuitry, and ensure the BOD (Brown-Out Detection) level is optimized for your supply voltage (e.g., 1.8V BOD for coin cell operation). Additionally, verify timing accuracy: the internal oscillator has limited precision (~10% typical), which may affect wake intervals. For long-term deployments, consider calibration or time-sync techniques if precise timing is critical. Always validate current consumption with real-world probing, as PCB leakage can overshadow the device’s low 300nA typical standby current.
Can the ATTINY9-TSHR replace a PIC10F200 in an existing design, and what compatibility issues should I watch for?
Yes, the ATTINY9-TSHR can replace the PIC10F200 in many small-form-factor applications due to similar pin counts (SOT-23-6), 8-pin MCU roles, and voltage range (1.8V to 5.5V). However, key compatibility risks exist: the ATTINY9-TSHR uses an AVR architecture with a different instruction set, so firmware must be rewritten from assembly PIC to AVR-compatible C or assembly. I/O behavior differs—AVR has programmable pull-ups and stronger drive capability, but default pin states may cause transient glitches during boot. The ATTINY9-TSHR lacks built-in ADC, just like the PIC10F200, but offers one 8-bit PWM channel versus two in the PIC, potentially limiting control flexibility. Clocking also varies—the internal RC oscillator on the ATTINY9-TSHR runs at 12MHz but requires software prescaling for lower frequencies. Carefully re-validate timing-critical code and PCB signal integrity, especially if driving high-capacitance loads.
How does the limited 1KB flash memory in the ATTINY9-TSHR impact firmware development for real-time control tasks?
The 1KB flash memory in the ATTINY9-TSHR imposes tight constraints on firmware complexity, limiting full C runtime libraries or abstraction layers. Real-time control tasks must be optimized for size: use compact algorithms, avoid floating-point math, and inline small functions. Atmel's AVR libc can exceed 500 bytes quickly, so consider hand-tuned assembly for time-critical ISRs. Enable size optimization (-Os) and remove unused sections (-ffunction-sections, -gc-sections). The 512-word (1KB) limit also restricts diagnostic features—logging or runtime configuration may need removal. To assess feasibility early, prototype core logic in assembler or simulate memory usage with avr-size. Reserve space for future bug fixes; a 90% utilization leaves little room for patches. Consider the ATTINY5 or ATTINY10 as alternatives if code growth is anticipated.
What are the reliability concerns when using the ATTINY9-TSHR in an automotive environment near the 85°C temperature limit?
While the ATTINY9-TSHR is rated for -40°C to 85°C (TA), using it near the 85°C upper limit in automotive under-hood or dashboard applications risks thermal derating and long-term reliability degradation. Junction temperature (Tj) can exceed ambient due to internal power dissipation—e.g., driving 4 I/Os at 5V/20mA each adds ~40mW, raising die temperature. Ensure proper copper pour and thermal vias in the SOT-23-6 layout to minimize thermal resistance. Avoid sustained PWM or WDT activity at high Vcc. Also, flash data retention degrades at high temperature; while not specified for endurance, repeated reprogramming (>10k cycles) at elevated T may reduce reliability. For critical functions, include temperature monitoring via external thermistor or duty cycle drift detection. Consider the ATTINY9A or industrial-grade ATTINY25 for better temperature margins if available.
What are the signal integrity risks when routing I/O lines from the ATTINY9-TSHR on a high-noise industrial PCB?
The ATTINY9-TSHR’s small SOT-23-6 package and lack of guard rings make it susceptible to noise coupling on I/O lines in electrically noisy environments. With only four pins (PB0–PB3), shared use for PWM, GPIO, or reset increases vulnerability—especially if long traces act as antennas. Risks include false resets (via accidental ISP entry), PWM jitter, or I/O glitches triggering unintended logic. Mitigate by keeping I/O traces short and avoiding parallel routing with switching signals (e.g., DC-DC converters). Use series ferrite beads or RC filters (e.g., 100Ω + 100pF) on critical lines. Disable RESET functionality if ISP isn’t needed by programming the RSTDISBL fuse, freeing PB3 for general I/O with internal pull-up. Ensure ground continuity beneath the MCU, and bypass VCC with a 100nF ceramic capacitor as close as possible to reduce impedance. Validate immunity with EFT/burst testing in prototype.
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ATTINY9-TSHR CAD Models
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