ATMEGA88PA-ANR - 8-Bit AVR MCU 8KB Flash 20MHz TQFP-32 | Microchip
MPN: ATMEGA88PA-ANR β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.43 | $1.43 |
| 10 | $1.35 | $13.50 |
| 100 | $1.21 | $121.00 |
| 500 | $1.05 | $525.00 |
| 1,000 | $0.92 | $920.00 |
ATMEGA88PA-ANR Overview
An 8-bit AVR microcontroller is a Harvard-architecture processor that executes most of its 131 powerful instructions in a single clock cycle, combining a compact instruction set with high code density. In the embedded systems hierarchy, the ATmega88PA sits within the ATmega family of flash-based microcontrollers used for cost-sensitive control tasks, positioned between the smaller ATmega48 and the larger ATmega168 within the same pin-compatible product family.
Key features include up to 20 MIPS throughput at 20 MHz, picoPower technology for sub-microamp power-down currents, 1.8 V to 5.5 V wide supply operation, and byte-oriented Flash with read-while-write capability for in-system self-programming. The PA suffix denotes the picoPower-enhanced generation, improving energy efficiency for battery-powered designs.
Architecturally, the device pairs 32 x 8 general purpose working registers with an ALU directly connected to the register file, eliminating the access bottleneck typical of accumulator-based architectures. Fully static operation allows clocking down to DC for extreme low-power operation.
Typical applications include industrial sensor nodes, motor control and lighting systems, home automation, and battery-powered consumer products where the wide 1.8-5.5 V supply and picoPower sleep modes reduce system energy budgets.
When designing with this MCU, budget the 20 MHz maximum clock against supply voltage and use brown-out detection for reliable Flash operation below 1.8 V tolerance margins.
This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for ATMEGA88PA-ANR β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ATMEGA88PA-ANR (same form factor and footprint) β differing in Operating Temperature, Package, ADC, ADC Channels, Communication Interfaces.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
ATMEGA88P-20AUR
β Drop-Inβ In Stock
$0.74 / Unit
View Datasheet βATMEGA88A-AU
β Drop-Inβ In Stock
$1.52 / Unit
View Datasheet βATMEGA88-20AU
β Drop-Inβ In Stock
$2.33 / Unit
View Datasheet βATMEGA168PA-ANR
β Drop-In β οΈ εζ°εΎ ιͺθ―β In Stock
$1.44 / Unit
View Datasheet βATMEGA48PA-AUR
β Drop-In β οΈ εζ°εΎ ιͺθ―β In Stock
$1.72 / Unit
View Datasheet βATMEGA88PA-ANR Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit AVR RISC |
| Flash Memory | 8 KB (4K x 16) ISP Flash |
| SRAM | 1 KB |
| EEPROM | 512 B |
| Maximum Clock Frequency | 20 MHz |
| Supply Voltage Range | 1.8 V to 5.5 V |
| I/O Lines | 23 |
| General Purpose Working Registers | 32 x 8 |
| Timers | Three flexible timer/counters with compare modes |
| ADC | 6-channel 10-bit |
| Communication Interfaces | USART, SPI, TWI (I2C) |
| Operating Temperature | -40C to +105C |
| Package | 32-TQFP (7x7 mm, 0.8 mm pitch) |
| Mounting Type | Surface Mount |
| Power Technology | picoPower |
| Instructions | 131 instructions, most single-cycle |
| RoHS Status | Compliant |
ATMEGA88PA-ANR Pin Configuration
| Pin 1 | PD3 β Port D, bit 3 (GPIO / PCINT19) |
| Pin 2 | PD4 β Port D, bit 4 (GPIO / PCINT20 / XCK/T0) |
| Pin 3 | GND β Ground |
| Pin 4 | VCC β Digital supply voltage |
| Pin 5 | GND β Ground |
| Pin 6 | VCC β Digital supply voltage |
| Pin 7 | PB6 β Port B, bit 6 (XTAL1/TOSC1, PCINT6) |
| Pin 8 | PB7 β Port B, bit 7 (XTAL2/TOSC2, PCINT7) |
| Pin 9 | PD5 β Port D, bit 5 (GPIO / PCINT21 / T1) |
| Pin 10 | PD6 β Port D, bit 6 (GPIO / PCINT22 / AIN0) |
| Pin 11 | PD7 β Port D, bit 7 (GPIO / PCINT23 / AIN1) |
| Pin 12 | PB0 β Port B, bit 0 (GPIO / PCINT0 / ICP1 / CLKO) |
| Pin 13 | PB1 β Port B, bit 1 (GPIO / PCINT1 / OC1A) |
| Pin 14 | PB2 β Port B, bit 2 (GPIO / PCINT2 / SS / OC1B) |
| Pin 15 | PB3 β Port B, bit 3 (GPIO / PCINT3 / MOSI / OC2A) |
| Pin 16 | PB4 β Port B, bit 4 (GPIO / PCINT4 / MISO) |
| Pin 17 | PB5 β Port B, bit 5 (GPIO / PCINT5 / SCK) |
| Pin 18 | AVCC β ADC supply voltage |
| Pin 19 | ADC6 β Analog input channel 6 |
| Pin 20 | AREF β Analog reference voltage |
| Pin 21 | GND β Ground |
| Pin 22 | ADC7 β Analog input channel 7 |
| Pin 23 | PC0 β Port C, bit 0 (GPIO / PCINT8 / ADC0) |
| Pin 24 | PC1 β Port C, bit 1 (GPIO / PCINT9 / ADC1) |
| Pin 25 | PC2 β Port C, bit 2 (GPIO / PCINT10 / ADC2) |
| Pin 26 | PC3 β Port C, bit 3 (GPIO / PCINT11 / ADC3) |
| Pin 27 | PC4 β Port C, bit 4 (GPIO / PCINT12 / ADC4 / SDA) |
| Pin 28 | PC5 β Port C, bit 5 (GPIO / PCINT13 / ADC5 / SCL) |
| Pin 29 | PC6 β Port C, bit 6 (RESET / PCINT14) |
| Pin 30 | PD0 β Port D, bit 0 (GPIO / PCINT16 / RXD) |
| Pin 31 | PD1 β Port D, bit 1 (GPIO / PCINT17 / TXD) |
| Pin 32 | PD2 β Port D, bit 2 (GPIO / PCINT18 / INT0) |
Typical Applications
ATMEGA88PA-ANR is suitable for 6 applications: Industrial Sensor Nodes, Home Automation and Smart Lighting, Battery-Powered Consumer Devices, Motor Control and Actuator Systems, Embedded Systems Education and Prototyping, Metering and Measurement Instruments.
Industrial Sensor Nodes
The ATMEGA88PA-ANR fits industrial sensor nodes because its 1.8-5.5 V supply tolerance, picoPower sleep modes, and integrated 6-channel 10-bit ADC allow direct digitization of analog sensors such as thermistors and pressure bridges without external converter ICs. In a typical node, the MCU samples sensors through the ADC, buffers data in its 1 KB SRAM, and transmits over the USART or SPI to a wired bus or RF module, then drops into a low-power sleep state between samples. The trade-off versus a 32-bit MCU is processing headroom, but for periodic sampling tasks the 20 MIPS AVR core is more than sufficient and lowers cost and firmware complexity.
Recommended
Home Automation and Smart Lighting
Smart lighting and home automation products benefit from the ATMEGA88PA-ANR's TWI (I2C) and SPI interfaces, which connect readily to LED driver ICs, touch sensors, and wireless modules. The 23 GPIO lines drive multiple channels directly, and the three flexible timer/counters generate PWM signals with hardware precision for dimming and color mixing, offloading this work from the CPU. The picoPower generation supports standby operation from mains-derived standby supplies at minimal current, and the 8 KB Flash accommodates protocol handling for common home automation stacks. The AVR's deterministic single-cycle instruction execution simplifies real-time dimming control without RTOS overhead.
Recommended
Battery-Powered Consumer Devices
For battery-powered consumer products such as remote controls, toys, and portable meters, the ATMEGA88PA-ANR's picoPower technology and 1.8 V minimum supply are the deciding parameters. The device can run from two alkaline cells over their full discharge curve and wakes from power-down via pin-change or watchdog interrupts to service button presses or periodic measurements. The 512 B EEPROM retains calibration and user settings without battery backup, and the internal RC oscillator removes the need for an external crystal in cost-sensitive designs, saving both BOM cost and board area in compact handheld products.
Recommended
Motor Control and Actuator Systems
Small motor control tasks - fans, pumps, servo drives, and louver actuators - are well served by the ATMEGA88PA-ANR's three timers with compare modes, which produce complementary PWM signals in hardware while the 20 MHz core executes control loops and protection logic. The 10-bit ADC reads current shunt and back-EMF feedback channels for closed-loop speed regulation, and the watchdog timer provides fail-safe recovery if firmware locks. At 5 V operation the AVR's robust I/O can drive gate-driver inputs directly. Designs requiring sensorless FOC should step up to larger AVR or dsPIC families, but for TRAIC/PWM-driven DC and small BLDC applications this MCU is a proven, low-cost fit.
Recommended
Embedded Systems Education and Prototyping
The ATMEGA88PA-ANR is a mainstay of embedded-systems teaching and rapid prototyping because it exposes a complete AVR architecture - RISC core, interrupt controller, timers, ADC, and serial peripherals - in a single low-cost chip fully supported by AVR-GCC, Microchip Studio, and the open avrdude toolchain. ISP in-system programming via the SPI header lets students reprogram boards without removing the chip. The wide 1.8-5.5 V supply range tolerates breadboard power errors, and abundant community documentation, application notes, and Arduino-compatible bootloaders shorten the learning curve. Its pin compatibility with ATmega48/168/328 family members lets one PCB teach multiple memory configurations.
Recommended
Metering and Measurement Instruments
Utility submeters, environmental monitors, and handheld instruments leverage the ATMEGA88PA-ANR's 6-channel 10-bit ADC and internal bandgap reference to measure voltages, currents, and sensor outputs directly. The 512 B EEPROM stores calibration constants across power cycles and re-calibration events, while the TWI interface reads external precision ADCs or RTCs when higher resolution is needed. PicoPower sleep modes allow battery or energy-harvesting powered meters to sample intermittently for years. The 105C industrial temperature rating supports installation inside sealed enclosures and near power electronics where ambient temperatures exceed standard commercial limits.
Recommended
Recommended Products Summary
Engineering reference data for ATMEGA88PA-ANR β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATMEGA88P-20AUR | ATMEGA88A-AU | ATMEGA88-20AU | ATMEGA168PA-ANR | ATMEGA48PA-AUR |
|---|---|---|---|---|---|---|
| Package | 32-TQFP (7x7 mm, 0.8 mm pitch) | 32-TQFP (7x7 mm) - same | 32-TQFP (7x7 mm) - same | 32-TQFP (7x7 mm) - same | 32-TQFP (7x7 mm) - same | 32-TQFP (7x7 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 8 KB | 8 KB | 8 KB | 8 KB | 16 KB | 4 KB |
| SRAM | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB | 512 B |
| EEPROM | 512 B | 512 B | 512 B | 512 B | 1 KB | 256 B |
| Maximum Clock Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Supply Voltage Range | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 2.7 V to 5.5 V (non-picoPower) | 2.7 V to 5.5 V (non-picoPower) | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| picoPower Technology | Yes | Yes | No | No | Yes | Yes |
| Operating Temperature | -40C to +105C (industrial) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +105C (industrial) | -40C to +105C (industrial) |
Key Differentiators
- picoPower technology for lowest sleep currents (vs ATMEGA88A-AU)
- Extended -40C to +105C industrial temperature rating (vs ATMEGA88P-20AUR)
- Pin-compatible memory scaling path (vs ATMEGA168PA-ANR)
Design Notes
Decouple both VCC pins (4 and 6) and AVCC (pin 18) with 100 nF ceramic capacitors placed within a few millimeters of each pin, plus a 10 uF bulk capacitor near the MCU. Connect AVCC to VCC through a low-pass filter (10 uH inductor or ferrite bead plus capacitor) when the ADC is used in noisy environments - Microchip's AVR application notes on ADC noise reduction recommend this for achieving full 10-bit accuracy. Always tie AREF to a clean reference through a 100 nF capacitor; never connect AREF directly to a voltage source without series resistance.
Enable brown-out detection (BOD) fuses for operation below approximately 4 V systems, especially when using EEPROM writes - Flash and EEPROM corruption during undervoltage is the most common field failure mode on AVR designs. RESET (pin 29) has an internal pull-up but should have an external 10 kOhm pull-up and, in noisy environments, a 100 nF capacitor to ground for noise immunity. Remember that PC6 is RESET by default, not GPIO; using it as I/O requires setting the RSTDISBL fuse, which permanently disables further ISP programming.
The ATMEGA88PA-ANR at 20 MHz, 5 V, driving full GPIO loads dissipates on the order of 100-200 mW, which the 32-TQFP package dissipates without a heatsink on a standard four-layer or two-layer board with ground pour. Estimated: at 200 mW and a typical TQFP-32 theta_JA near 90 C/W, junction rise above ambient is roughly 18 C, keeping junction temperature well within the 105C rating even at 85C ambient. Avoid driving many outputs at maximum source current simultaneously on two-layer boards with minimal copper.
For crystals on PB6/PB7, keep the crystal and its 12-22 pF load capacitors as close to the pins as possible with short, direct traces over a solid ground plane. If the internal 8 MHz RC oscillator is used, reserve PB6/PB7 as GPIO for extra I/O and reduce BOM cost. When using TWI (I2C) on PC4/PC5, fit 4.7 kOhm pull-ups to VCC; do not rely on internal pull-ups for bus capacitances above roughly 50 pF.
Compliance Information
RoHS compliance per Microchip product listings for ATMEGA88PA-ANR. Not AEC-Q100 qualified - this is an industrial-grade AVR part.
