ATMEGA168PB-ANR - 8-bit AVR MCU 16KB Flash 20MHz TQFP-32 | Microchip
MPN: ATMEGA168PB-ANR ✓ فعالATMEGA168PB-ANR جائزہ
An 8-bit AVR microcontroller is a Harvard-architecture RISC processor that executes most instructions in a single clock cycle, placing it in the broader hierarchy of MCU -> embedded microcontroller -> semiconductor integrated circuit. AVR MCUs are widely used where low power, deterministic execution and simple single-supply design matter, from Arduino-compatible boards to industrial sensors.
Key features of the ATMEGA168PB include advanced RISC architecture with 131 instructions, 32 general-purpose 8-bit working registers, three flexible timer/counters (two 8-bit, one 16-bit), a 10-bit ADC, and picoPower technology for ultra-low sleep currents. The PB variant improves analog performance and adds extra pin-mapping flexibility versus the earlier ATmega168PA.
Technical depth: the device offers read-while-write FLASH for in-system programming, six sleep modes including power-down, USART, SPI and two-wire (I2C) serial interfaces, an on-chip oscillator option, and brown-out detection. Execution throughput reaches up to 20 MIPS at 20MHz, and the enriched feature set supports functional-safety-oriented designs.
Typical applications include industrial sensor nodes, consumer appliances, battery-powered meters, and hobbyist/Arduino-compatible boards where pin-compatible upgrades of ATmega48/88/168/328 sockets are needed.
Design consideration: keep AVCC connected to VCC through a low-pass network and never let the reset pin float; budget 20MHz timing only at 4.5V-5.5V or verify the voltage-frequency derating curve for 3.3V systems.
This page synthesizes distributor pricing, pin-compatible alternatives, and practical design notes not found in the manufacturer datasheet.
کے لیے ڈراپ اِن متبادل ATMEGA168PB-ANR — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں ATMEGA168PB-ANR (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Operating Temperature, Package, Serial Interfaces, EEPROM, SRAM.
ATMEGA168PA-ANR
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ATMEGA168PA-MU
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ATMEGA168P-20AU
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ATMEGA168A-AU
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ATMEGA88PB-ANR
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ATMEGA328P-AU
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ATMEGA328PB-AU
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ATMEGA168PB-ANR زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Core Architecture | 8-bit AVR RISC |
| Flash Memory | 16KB (8K x 16) |
| EEPROM | 512B |
| SRAM | 1KB |
| زیادہ سے زیادہ کلاک فریکوئنسی | 20MHz |
| General Purpose I/O | 27 lines |
| Timers/Counters | 2 x 8-bit, 1 x 16-bit |
| ADC Resolution | 10-bit |
| Serial Interfaces | USART, SPI, 2-wire (I2C) |
| Supply Voltage Range | 1.8 V to 5.5 V |
| Low Power Technology | picoPower |
| آپریٹنگ درجہ حرارت | -40C to +105C |
| پیکیج | 32-TQFP (7x7 mm) |
| ماؤنٹنگ ٹائپ | Surface Mount |
| Packaging | Tape & Reel (ANR suffix) |
| Programming Interfaces | ISP, debugWIRE |
| Green Compliance | RoHS-compliant, halide-free (per Microchip ordering data) |
ATMEGA168PB-ANR پن کنفیگریشن
| پن 1 | PD3 (PCINT19/OC2B/INT1) — Port D bit 3, pin-change interrupt 19, Timer2 output compare B, external interrupt 1 |
| پن 2 | PD4 (PCINT20/XCK/T0) — Port D bit 4, USART external clock, Timer0 clock input |
| پن 3 | GND — Ground |
| پن 4 | VCC — Digital supply voltage |
| پن 5 | GND — Ground |
| پن 6 | VCC — Digital supply voltage |
| پن 7 | PB6 (PCINT6/XTAL1/TOSC1) — Port B bit 6, crystal oscillator input / timer oscillator |
| پن 8 | PB7 (PCINT7/XTAL2/TOSC2) — Port B bit 7, crystal oscillator output |
| پن 9 | PD5 (PCINT21/OC0B/T1) — Port D bit 5, Timer0 output compare B, Timer1 clock input |
| پن 10 | PD6 (PCINT22/OC0A/AIN0) — Port D bit 6, Timer0 output compare A, analog comparator positive input |
| پن 11 | PD7 (PCINT23/AIN1) — Port D bit 7, analog comparator negative input |
| پن 12 | PB0 (PCINT0/CLKO/ICP1) — Port B bit 0, clock output, Timer1 input capture |
| پن 13 | PB1 (PCINT1/OC1A) — Port B bit 1, Timer1 output compare A |
| پن 14 | PB2 (PCINT2/SS/OC1B) — Port B bit 2, SPI slave select, Timer1 output compare B |
| پن 15 | PB3 (PCINT3/OC2A/MOSI) — Port B bit 3, Timer2 output compare A, SPI master output |
| پن 16 | PB4 (PCINT4/MISO) — Port B bit 4, SPI master input |
| پن 17 | PB5 (PCINT5/SCK) — Port B bit 5, SPI clock |
| پن 18 | AVCC — ADC supply voltage |
| پن 19 | ADC6 — ADC input channel 6 |
| پن 20 | AREF — Analog reference for ADC |
| پن 21 | GND — Ground |
| پن 22 | ADC7 — ADC input channel 7 |
| پن 23 | PC0 (PCINT8/ADC0) — Port C bit 0, ADC channel 0 |
| پن 24 | PC1 (PCINT9/ADC1) — Port C bit 1, ADC channel 1 |
| پن 25 | PC2 (PCINT10/ADC2) — Port C bit 2, ADC channel 2 |
| پن 26 | PC3 (PCINT11/ADC3) — Port C bit 3, ADC channel 3 |
| پن 27 | PC4 (PCINT12/SDA/ADC4) — Port C bit 4, two-wire data line, ADC channel 4 |
| پن 28 | PC5 (PCINT13/SCL/ADC5) — Port C bit 5, two-wire clock line, ADC channel 5 |
| پن 29 | PC6 (PCINT14/RESET) — Reset input (active low), must be driven for ISP |
| پن 30 | PD0 (PCINT16/RXD) — Port D bit 0, USART receive |
| پن 31 | PD1 (PCINT17/TXD) — Port D bit 1, USART transmit |
| پن 32 | PD2 (PCINT18/INT0) — Port D bit 2, external interrupt 0 |
عام استعمالات
ATMEGA168PB-ANR کے لیے موزوں ہے 6 ایپلیکیشنs: Industrial Sensor Nodes, Battery-Powered Consumer Devices, Arduino-Compatible Hobby and Educational Boards, Home Appliance Control, Measurement and Instrumentation Front Ends, Automotive-Adjacent Body Electronics.
Industrial Sensor Nodes
The ATMEGA168PB-ANR fits industrial sensor nodes where a 1.8V-5.5V supply range, -40C to +105C temperature rating and picoPower sleep currents allow years of battery-assisted operation. Its 10-bit ADC digitizes bridge and analog sensor outputs directly, while SPI and two-wire interfaces connect digital sensors such as pressure or humidity ICs. The 16KB FLASH accommodates filtering, linearization and Modbus-style serial firmware with room for a bootloader. In a node powered from a 24V industrial rail via a regulator, the MCU spends most time in power-down mode, waking on pin-change or timer interrupts to sample and transmit over USART, keeping average current in the low-microamp range.
تجویز کردہ
Battery-Powered Consumer Devices
For battery-powered meters, remote controls and portable appliances, the ATMEGA168PB-ANR's picoPower technology delivers six sleep modes with sub-uA-class power-down current, which directly extends battery life. The on-chip brown-out detector and internal oscillator remove external components, shrinking BOM cost in high-volume products. The 27 GPIO lines drive keypads, LCD segments and LEDs without port expanders, while the 10-bit ADC reads battery voltage for state-of-charge indication. A typical design runs at 1MHz internal RC from two AA cells (3V), waking once per second via watchdog timer to sample and display, achieving multi-year operation from the same 16KB FLASH code budget that would otherwise demand a larger MCU.
تجویز کردہ
Arduino-Compatible Hobby and Educational Boards
The ATMEGA168PB-ANR is fully supported by community Arduino toolchains such as MiniCore and by Microchip's ATmega168PB Xplained Mini kit, making it a natural choice for educational and maker boards. With 16KB FLASH it runs the same bootloader-and-sketch model as the classic Arduino Uno (ATmega328P) while lowering unit cost, and the identical TQFP-32 footprint lets designers reuse Uno-derived layouts. The USART serves as the USB-serial programming channel; SPI and I2C connect shields for displays and sensors. At 16MHz from 5V it executes roughly 16 MIPS, adequate for robotics, instrumentation and IoT prototypes, and debugWIRE offers single-wire on-chip debugging through Microchip Studio during firmware development.
تجویز کردہ
Home Appliance Control
White goods and small appliances benefit from the ATMEGA168PB-ANR's combination of -40C to +105C ambient rating, 1.8V-5.5V single-supply operation and rich timer set for AC-load control. The two 8-bit timers generate PWM for TRIAC phase-angle or LED dimming control, and the 16-bit timer handles encoder input from knobs with hardware capture for precise timing. The 16KB FLASH stores touch-decision logic, buzzer tones and fault handling, while the 10-bit ADC reads NTC thermistors for over-temperature protection. Noise immunity on the AVR core plus the internal brown-out reset maintain deterministic behavior on the electrically noisy 220V environments typical of appliance control PCBs.
تجویز کردہ
Measurement and Instrumentation Front Ends
Handheld meters and simple instrumentation use the ATMEGA168PB-ANR's 10-bit ADC with differential input modes and programmable gain (1x/8x/20x/32x) to measure small sensor signals without an external amplifier stage. The internal 1.1V bandgap reference provides a stable ratiometric baseline; AVCC filtering plus the noise-reduction sleep mode before each conversion improves effective resolution. The 1KB SRAM buffers multi-point calibration tables, and 512B EEPROM stores factory trim values across power cycles. For higher-resolution needs, the SPI port clocks external delta-sigma ADCs such as the MCP342x family, keeping the design single-chip for logic while the AVR handles averaging, scaling and display driving on the same 16KB code budget.
تجویز کردہ
Automotive-Adjacent Body Electronics
The ATMEGA168PB-ANR serves cost-sensitive 12V automotive-adjacent subsystems such as seat controllers, lighting modules and sensor pods that sit outside strict AEC-Q100 mandates but still see wide temperature swings. Its -40C to +105C rating matches cabin-to-engine-bay boundary conditions, and the 5V operation pairs cleanly with automotive 12V rails through a 5V regulator. The 16-bit timer with input capture decodes LIN-style or PWM protocols, and the USART connects LIN transceivers for body-bus communication. PicoPower modes support ignition-off keep-alive tasks below 10uA. Designers needing certified automotive grade should move to Q-grade AVR variants, but for aftermarket and auxiliary modules the 168PB provides the same pin-compatible layout footprint.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا ATMEGA168PB-ANR — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | ATMEGA168PA-ANR | ATMEGA88PB-ANR | ATMEGA328P-AU | ATMEGA328PB-AU |
|---|---|---|---|---|---|
| Package | TQFP-32 (7x7 mm) | TQFP-32 (7x7 mm) - same | TQFP-32 (7x7 mm) - same | TQFP-32 (7x7 mm) - same | TQFP-32 (7x7 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 16KB | 16KB | 8KB | 32KB | 32KB |
| SRAM | 1KB | 1KB | 1KB | 2KB | 2KB |
| Max Clock | 20MHz | 20MHz | 20MHz | 20MHz | 20MHz |
| Operating Temperature | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +85C | -40C to +105C |
| Low-Power Technology | picoPower (PB revision) | picoPower (PA revision) | picoPower (PB revision) | picoPower (P revision) | picoPower (PB revision) |
| Extra Peripherals | 2x 8-bit + 1x 16-bit timers, 1x USART | Same peripheral set | Same peripheral set, half flash | Same peripheral set, more memory | 2x USART, extra timer, 2x TWI/SPI masters |
اہم امتیازی خصوصیات
- Extended -40C to +105C operating range (بمقابلہATMEGA328P-AU)
- picoPower PB-die refinements (بمقابلہATMEGA168P-20AU)
- Cost-efficient middle of the family (بمقابلہATMEGA328PB-AU)
- Trade-off: smaller SRAM than 328-series (بمقابلہATMEGA328P-AU)
ڈیزائن نوٹس
Connect AVCC (pin 18) to VCC through an LC low-pass (e.g. 10uH inductor or ferrite bead with 100nF at AVCC) even when the ADC is unused - the datasheet requires AVCC within 0.3V of VCC for the device to function. Decouple both VCC pins (4, 6) with 100nF ceramics placed within 2mm of the pins. At 5V/20MHz, active current is roughly 5-6mA typical; in power-down with WDT off, expect sub-uA levels, so select regulator quiescent current (e.g. MCP1700-class, 1.6uA) to preserve sleep savings in battery designs.
Keep the crystal (if used) within 10mm of pins 7-8 with short ground return traces, and place 22pF-class load capacitors per the crystal datasheet. Route the RESET trace (pin 29) away from PWM/relay lines; a glitch here during ISP leaves the board unprogrammable. Reserve the 6-pin ISP header footprint (or test pads for MISO/MOSI/SCK/RESET/VCC/GND) in production layouts - retrofitting programming access after layout freeze is the most common AVR design pitfall.
Two VCC and two GND pins must both be connected - floating pin 4 or 6 produces intermittent resets that mimic software bugs. Do not omit the brown-out detector fuse when running from unregulated supplies; SRAM corruption below 1.8V otherwise bricks EEPROM contents. When migrating firmware from ATmega328P, note the 168PB has half the RAM (1KB vs 2KB), so stack-heavy sketches (String, large buffers) overflow silently - set a stack canary or reduce heap usage before porting.
Estimated: at 5V and 20MHz with all I/O sourcing 20mA, worst-case die dissipation stays below ~0.25W, giving junction rise under 15C over ambient with the TQFP-32 thermal resistance (typically ~100 C/W on a minimum-copper board). No heatsink is required for any realistic AVR workload; the practical thermal constraint is ambient ceiling: above +85C ambient, verify junction margin per the datasheet absolute maximum of 150C.
تعمیل کی معلومات
Per Microchip ordering documentation (onlinedocs.microchip.com): Pb-free packaging complies with the European RoHS directive; also halide-free and fully Green. Not marketed as AEC-Q100 qualified - select a Q-grade AVR variant for certified automotive use.