Model No: ATMEGA168PB-AU
Microchip Technology ATMEGA168PB-AU
Manufacturer: Microchip Technology
SEMICON NO.: ATMEGA168PB-AU
Package: 32‑TQFP
Stock: In stock
Description: AVR ATmega MCU 8‑bit 20 MHz
SEMICON NO.: ATMEGA168PB-AU
Package: 32‑TQFP
Stock: In stock
Description: AVR ATmega MCU 8‑bit 20 MHz
Quantity :
| Mfr | Microchip Technology |
| Device Type | 8‑bit Microcontroller (MCU) |
| Core Processor | AVR |
| Core Size | 8‑Bit |
| Maximum CPU Speed | 20 MHz |
| Program Memory (Flash) | 16 KB (8K × 16) |
| SRAM | 1 KB (1K × 8) |
| EEPROM | 512 B (512 × 8) |
| Analog‑to‑Digital Converter | 8‑channel, 10‑bit ADC |
| ADC Channels | 8 |
| ADC Resolution | 10‑bit |
| Analog Comparator | Yes |
| General‑Purpose I/O Pins | 27 |
| Operating Voltage | 1.8 V to 5.5 V |
| Operating Temperature | -40°C to +85°C |
| Package | 32‑TQFP |
| Mounting Type | Surface Mount |
| Compliance | RoHS Compliant |
The ATMEGA168PB-AU is a low-power, 8-bit AVR RISC-based microcontroller from Microchip Technology, combining 16KB in-system programmable Flash, 512B EEPROM, and 1KB SRAM in a compact 32-lead TQFP surface-mount package. Operating from 1.8V to 5.5V at speeds up to 20MHz (delivering up to 20 MIPS throughput), it integrates 23-27 general-purpose I/O lines, 32 general-purpose working registers, a flexible timer-counter suite with PWM, an 8-channel 10-bit ADC, and multiple communication interfaces including USART, SPI (two), and I²C (TWI), all supported by the picoPower® technology for extreme power efficiency across the extended industrial temperature range.
Key Features & Benefits
● High-Performance AVR RISC Architecture: 131 powerful instructions with mostly single-cycle execution and 32 general-purpose working registers enable up to 20 MIPS throughput at 20MHz.
● Non-Volatile Memory Integration: 16KB ISP Flash with read-while-write capability, 512B EEPROM, and 1KB SRAM provide ample, persistent code and data storage in a single chip.
● Rich Peripheral Set: Includes two 8-bit and one 16-bit timer/counters with six PWM channels, an 8-channel 10-bit ADC, and a programmable watchdog timer for robust, multi-functional system control.
● Multiple Communication Interfaces: Features one USART, two SPI ports, and two I²C (TWI) interfaces supporting both master and slave operation for flexible connectivity with external sensors, memories, and other controllers.
● In-System Programming (ISP) and DebugWIRE: Supports convenient programming and on-chip debugging via a single-wire interface, simplifying development and field updates.
Frequently Asked Questions
Q: Is the ATmega168PB pin-compatible with the ATmega168PA?
A: While sharing the same TQFP-32 package, the PB version introduces a few minor pin function changes and alternate pin configurations; designers must verify pinout mappings per the migration document before drop-in replacement.
Q: What debugging interfaces are available?
A:It supports debugWIRE for single-wire, low-cost on-chip debugging, and JTAG-based programming via third-party tools, though full JTAG debugging is not implemented on this device family
Recommended Alternative AVR microcontrollers
● ATmega328PB — The higher-memory sibling with 32KB Flash and 2KB SRAM, plus an additional 16-bit timer and four USARTs, ideal for projects needing more code space and connectivity.
● ATtiny1616 — A modern, compact AVR-1-series alternative offering 16KB Flash, 2KB SRAM, and a Configurable Custom Logic (CCL) block in a smaller 20-pin package.
● PIC16F18446 — A Microchip PIC alternative with 16KB Flash, 2KB RAM, and integrated 8-bit ADC with computation, suited for designers standardized on the PIC ecosystem.
Key Features & Benefits
● High-Performance AVR RISC Architecture: 131 powerful instructions with mostly single-cycle execution and 32 general-purpose working registers enable up to 20 MIPS throughput at 20MHz.
● Non-Volatile Memory Integration: 16KB ISP Flash with read-while-write capability, 512B EEPROM, and 1KB SRAM provide ample, persistent code and data storage in a single chip.
● Rich Peripheral Set: Includes two 8-bit and one 16-bit timer/counters with six PWM channels, an 8-channel 10-bit ADC, and a programmable watchdog timer for robust, multi-functional system control.
● Multiple Communication Interfaces: Features one USART, two SPI ports, and two I²C (TWI) interfaces supporting both master and slave operation for flexible connectivity with external sensors, memories, and other controllers.
● In-System Programming (ISP) and DebugWIRE: Supports convenient programming and on-chip debugging via a single-wire interface, simplifying development and field updates.
Frequently Asked Questions
Q: Is the ATmega168PB pin-compatible with the ATmega168PA?
A: While sharing the same TQFP-32 package, the PB version introduces a few minor pin function changes and alternate pin configurations; designers must verify pinout mappings per the migration document before drop-in replacement.
Q: What debugging interfaces are available?
A:It supports debugWIRE for single-wire, low-cost on-chip debugging, and JTAG-based programming via third-party tools, though full JTAG debugging is not implemented on this device family
Recommended Alternative AVR microcontrollers
● ATmega328PB — The higher-memory sibling with 32KB Flash and 2KB SRAM, plus an additional 16-bit timer and four USARTs, ideal for projects needing more code space and connectivity.
● ATtiny1616 — A modern, compact AVR-1-series alternative offering 16KB Flash, 2KB SRAM, and a Configurable Custom Logic (CCL) block in a smaller 20-pin package.
● PIC16F18446 — A Microchip PIC alternative with 16KB Flash, 2KB RAM, and integrated 8-bit ADC with computation, suited for designers standardized on the PIC ecosystem.
