ATMEGA88V-10AJ - 8-Bit AVR MCU, 8KB Flash, 10MHz | Microchip
MPN: ATMEGA88V-10AJ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.42 | $3.42 |
| 10 | $3.08 | $30.80 |
| 100 | $2.74 | $274.00 |
| 500 | $2.46 | $1,230.00 |
| 1,000 | $2.15 | $2,150.00 |
ATMEGA88V-10AJ Overview
A microcontroller unit (MCU) is a complete computing system on a single chip, combining a processor core, program memory, data memory, and peripherals. The ATmega88V belongs to the ATmega48/88/168 family of AVR enhanced RISC MCUs, positioned within Microchip's broader 8-bit microcontroller portfolio, a class of semiconductors that dominates cost-sensitive embedded control tasks from appliance control to sensor nodes.
Key features include 131 powerful instructions, most executed in a single clock cycle, delivering up to 20 MIPS throughput in the family at 20MHz; 10MHz maximum frequency for the V (low-voltage) speed grade across 1.8V to 5.5V operation; three flexible timer/counters with compare modes; a serial programmable USART; byte-oriented Two-Wire Interface (TWI/I2C); SPI serial interface; and an 8-channel 10-bit ADC. debugWIRE on-chip debugging is supported through the RESET pin, reducing external debug circuitry.
Architecturally, the device uses an advanced Harvard-structured RISC core with 32 general-purpose working registers directly connected to the ALU, allowing two independent register accesses in a single instruction. Self-programming Flash with read-while-write support enables in-system reprogramming and bootloader applications without external programmers.
Typical applications include low-power battery-operated sensor nodes exploiting the 1.8V floor, industrial control panels using the USART and TWI interfaces, and consumer appliance boards leveraging the 10-bit ADC for analog sensor acquisition.
When designing with this part, remember the 10MHz limit applies across the full voltage range; do not swap in a 20MHz ATmega88 variant firmware assumption without verifying clock fusing and timing loops.
This page synthesizes distributor pricing, drop-in alternatives, pinout data, and practical design notes not found in the manufacturer datasheet alone, all verified as of 2026-09-19.
Drop-in alternatives for ATMEGA88V-10AJ — 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 ATMEGA88V-10AJ (same form factor and footprint) — differing in Package, Operating Temperature, Maximum Clock Frequency, RoHS Status, ADC Channels.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ATMEGA88A-AU
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.52 / Unit
View Datasheet →ATMEGA88PA-AUR
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.82 / Unit
View Datasheet →ATMEGA88PB-ANR
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.38 / Unit
View Datasheet →ATMEGA88-20AU
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$2.33 / Unit
View Datasheet →ATMEGA88PA-ANR
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.92 / Unit
View Datasheet →ATMEGA88V-10AJ Maximum Ratings & Electrical Characteristics
| Core Architecture | AVR 8-bit RISC |
| Program Memory Size | 8KB (4K x 16) Flash |
| SRAM Size | 1KB |
| EEPROM Size | 512B |
| Maximum Clock Frequency | 10MHz |
| Supply Voltage Range | 1.8V to 5.5V |
| I/O Lines | 23 |
| ADC Channels | 8-channel, 10-bit |
| Timers/Counters | 3 (two 8-bit, one 16-bit) |
| Communication Interfaces | USART, TWI (I2C), SPI |
| Instruction Set | 131 instructions, mostly single-cycle |
| On-Chip Debug | debugWIRE |
| Package | 32-TQFP (7x7 mm) |
| Mounting Type | Surface Mount |
| In-System Programming | Yes (ISP Flash, read-while-write) |
| RoHS Status | Compliant (lead-free TQFP per J suffix) |
| Family | AVR ATmega (ATmega48/88/168) |
ATMEGA88V-10AJ Pin Configuration
| Pin 1 | PD3 (PCINT19/OC2B/INT1) — Port D bit 3; pin-change interrupt 19, Timer2 compare B output, external interrupt 1 |
| Pin 2 | PD4 (PCINT20/XCK/T0) — Port D bit 4; pin-change interrupt 20, USART external clock, Timer0 clock input |
| Pin 3 | GND — Ground |
| Pin 4 | VCC — Digital supply voltage |
| Pin 5 | GND — Ground |
| Pin 6 | VCC — Digital supply voltage |
| Pin 7 | PB6 (PCINT6/XTAL1/TOSC1) — Port B bit 6; crystal oscillator input 1 / timer oscillator input |
| Pin 8 | PB7 (PCINT7/XTAL2/TOSC2) — Port B bit 7; crystal oscillator output 2 / timer oscillator output |
| Pin 9 | PD5 (PCINT21/OC0B/T1) — Port D bit 5; pin-change interrupt 21, Timer0 compare B output, Timer1 clock input |
| Pin 10 | PD6 (PCINT22/OC0A/AIN0) — Port D bit 6; pin-change interrupt 22, Timer0 compare A output, analog comparator positive input |
| Pin 11 | PD7 (PCINT23/AIN1) — Port D bit 7; pin-change interrupt 23, analog comparator negative input |
| Pin 12 | PB0 (PCINT0/CLKO/ICP1) — Port B bit 0; pin-change interrupt 0, system clock output, Timer1 input capture |
| Pin 13 | PB1 (PCINT1/OC1A) — Port B bit 1; pin-change interrupt 1, Timer1 compare A output |
| Pin 14 | PB2 (PCINT2/SS/OC1B) — Port B bit 2; pin-change interrupt 2, SPI slave select, Timer1 compare B output |
| Pin 15 | PB3 (PCINT3/MOSI/OC2A) — Port B bit 3; pin-change interrupt 3, SPI master output, Timer2 compare A output |
| Pin 16 | PB4 (PCINT4/MISO) — Port B bit 4; pin-change interrupt 4, SPI master input |
| Pin 17 | PB5 (PCINT5/SCK) — Port B bit 5; pin-change interrupt 5, SPI serial clock |
| Pin 18 | AVCC — ADC supply voltage; connect to VCC through low-pass filter when ADC used |
| Pin 19 | ADC6 — Analog input channel 6 (dedicated analog pin) |
| Pin 20 | AREF — ADC analog reference; decouple to GND with capacitor when using internal reference |
| Pin 21 | GND — Ground |
| Pin 22 | ADC7 — Analog input channel 7 (dedicated analog pin) |
| Pin 23 | PC0 (PCINT8/ADC0) — Port C bit 0; pin-change interrupt 8, ADC channel 0 |
| Pin 24 | PC1 (PCINT9/ADC1) — Port C bit 1; pin-change interrupt 9, ADC channel 1 |
| Pin 25 | PC2 (PCINT10/ADC2) — Port C bit 2; pin-change interrupt 10, ADC channel 2 |
| Pin 26 | PC3 (PCINT11/ADC3) — Port C bit 3; pin-change interrupt 11, ADC channel 3 |
| Pin 27 | PC4 (PCINT12/SDA/ADC4) — Port C bit 4; pin-change interrupt 12, TWI data line, ADC channel 4 |
| Pin 28 | PC5 (PCINT13/SCL/ADC5) — Port C bit 5; pin-change interrupt 13, TWI clock line, ADC channel 5 |
| Pin 29 | PC6 (PCINT14/RESET) — Reset input; active low; doubles as debugWIRE interface pin |
| Pin 30 | PD0 (PCINT16/RXD) — Port D bit 0; pin-change interrupt 16, USART receiver input |
| Pin 31 | PD1 (PCINT17/TXD) — Port D bit 1; pin-change interrupt 17, USART transmitter output |
| Pin 32 | PD2 (PCINT18/INT0) — Port D bit 2; pin-change interrupt 18, external interrupt 0 |
Typical Applications
ATMEGA88V-10AJ is suitable for 6 applications: Battery-Powered Sensor Nodes, Industrial Control Panels, Consumer Appliance Control, Automotive Accessory and Aftermarket Modules, Data Acquisition and Metering Front Ends, Embedded Networking and IoT Endpoint Devices.
Battery-Powered Sensor Nodes
The ATMEGA88V-10AJ fits battery-powered sensor nodes because its 1.8V minimum supply lets it run directly from two alkaline cells to end-of-life, and its low-power AVR sleep modes keep average current in the microamp range between wakeups. In a typical node, the MCU wakes on a timer or pin-change interrupt, samples an analog sensor via the 8-channel 10-bit ADC, and transmits a packet over the USART at 9600 baud before returning to power-down. The 10MHz V-grade clock keeps dynamic switching current low compared with 20MHz grades. Because each conversion at 10-bit resolution consumes only about 13 ADC clock cycles per sample in the family architecture, duty-cycled measurements are fast enough to allow very short active windows, maximizing battery life.
Recommended
Industrial Control Panels
In industrial control panels, the ATMEGA88V-10AJ serves as a compact logic controller managing relays, buttons, and status LEDs across its 23 GPIO lines. Its USART links to RS-485 transceivers for Modbus-style fieldbus communication, while the byte-oriented TWI (I2C) interface reads configuration from EEPROM or drives port expanders. The wide 1.8V to 5.5V supply range tolerates noisy 5V rails with brownout events, and the internal watchdog timer adds fault recovery. The three timer/counters provide PWM outputs for actuator control with compare-mode interrupts. Because most of the 131 AVR instructions execute in a single clock cycle at 10MHz, deterministic scan times of tens of microseconds are achievable for simple sequential control logic without an RTOS.
Recommended
Consumer Appliance Control
Consumer appliances such as coffee machines, fan controllers, and small pump systems use the ATMEGA88V-10AJ for user-interface and motor-control tasks. The 10-bit ADC reads thermistors and potentiometers, while timer PWM drives brushed-motor or heater power stages through MOSFET drivers. The V-grade's ability to run at 1.8V supports designs sharing a battery or low-voltage standby rail. DebugWIRE allows on-chip debugging over the RESET pin alone, which shortens firmware bring-up on cost-optimized boards that cannot afford dedicated debug connectors. With 8KB of Flash and 1KB of SRAM, the device comfortably hosts a menu-driven UI state machine plus sensor filtering and safety cutoffs, and its ISP self-programming Flash supports field firmware updates through a small bootloader.
Recommended
Automotive Accessory and Aftermarket Modules
The ATMEGA88V-10AJ is used in non-safety automotive accessory modules such as interior lighting controllers, window retrofit kits, and aftermarket sensor adapters. Its 1.8V to 5.5V operating range survives automotive load-dump conditions when paired with a simple linear regulator, and the 10MHz speed grade provides enough throughput for LIN-frame handling over the USART at up to 19.2 kbps. The 10-bit ADC digitizes supply-voltage telemetry so firmware can detect cranking brownouts and gate outputs safely. Because the ATmega48/88/168 family shares a single datasheet and register map, tier-one suppliers can qualify one firmware base across the V, A, and PA speed grades, swapping only clock fuses, which reduces validation cost when migrating between supply-chain variants.
Recommended
Data Acquisition and Metering Front Ends
The ATMEGA88V-10AJ acts as a low-cost data-acquisition front end in energy meters, temperature loggers, and process monitors. Its 8-channel 10-bit ADC with internal reference digitizes multiple analog inputs sequentially under a timer-triggered scan, while the 1KB SRAM buffers measurement arrays before UART transfer to a host or modem. The 512B EEPROM stores calibration constants non-volatilely, surviving power cycles without external memory. For differential or higher-precision needs, the TWI bus connects external delta-sigma converters while the AVR handles communication and averaging firmware. At 10MHz, the single-cycle multiply instruction accelerates fixed-point scaling and rms computation, delivering sufficient arithmetic throughput for utility-grade logging at modest sample rates under a few kilosamples per second.
Recommended
Embedded Networking and IoT Endpoint Devices
For IoT endpoints and small networked devices, the ATMEGA88V-10AJ provides the MCU core driving SPI radio modules or TWI-attached network coprocessors. Its hardware SPI runs efficiently at system-clock fractions, and the USART bridges to external modems for protocol translation. The device's 1KB SRAM constrains protocol stacks, so designs typically use lightweight UDP or proprietary framing rather than full TCP/IP, keeping packet buffers within budget. The picoPower-family sleep architecture allows the node to sleep between polls, waking on watchdog timeout or external interrupt from a motion or PIR sensor. The 32-TQFP footprint is hand-solderable for prototyping while remaining automated-assembly friendly, and debugWIRE supports single-wire in-circuit debugging during firmware iteration.
Recommended
Recommended Products Summary
Engineering reference data for ATMEGA88V-10AJ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATMEGA88A-AU | ATMEGA88PA-AUR | ATMEGA88PB-ANR | ATMEGA88-20AU |
|---|---|---|---|---|---|
| Package | 32-TQFP (7x7 mm) | 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 |
| Maximum Clock Frequency | 10MHz | 20MHz | 20MHz | 20MHz | 20MHz |
| Program Memory (Flash) | 8KB (4K x 16) | 8KB | 8KB | 8KB | 8KB |
| SRAM / EEPROM | 1KB / 512B | 1KB / 512B | 1KB / 512B | 1KB / 512B | 1KB / 512B |
| Supply Voltage Range | 1.8V to 5.5V | 2.7V to 5.5V | 1.8V to 5.5V | 1.8V to 5.5V | 4.5V to 5.5V at full speed |
| Power Technology | Standard low-power V grade | Standard A grade | picoPower (lowest sleep current) | picoPower PB revision | Standard 20MHz grade |
| Lifecycle / Roadmap Position | Active, legacy-favored grade | Active | Active, recommended for new designs | Active, newest revision | Active, older grade |
Key Differentiators
- Widest voltage operating range in the ATmega88 family (vs ATMEGA88A-AU)
- Lower dynamic power than faster grades (vs ATMEGA88-20AU)
- Single-wire debug without a dedicated debug connector (vs ATMEGA88-20AU)
Design Notes
Connect AVCC (pin 18) to VCC through an RC low-pass filter (typically a 10uH inductor or 100 ohm resistor with 0.1uF) whenever the ADC is used, and never leave AVCC floating even if ADC is unused. Decouple each VCC pin (4 and 6) with 0.1uF ceramics placed within a few millimeters of the pins. AREF (pin 20) should be decoupled to GND with a 0.1uF capacitor when using the internal reference; do not drive AREF while the internal reference is selected, as this can damage the reference stage.
The 10MHz speed grade is a hard limit across the entire 1.8V to 5.5V range - do not fuse an external crystal above 10MHz on this part. Firmware with hardcoded timing loops (delay constants, UART bit-bang timing) written for a 20MHz sibling will run at half speed on the V grade unless the F_CPU constant and clock fuses are updated. Also note the J (TQFP) and U (MLF/QFN) package suffixes are NOT footprint-compatible; ordering the U variant for a TQFP land pattern will not mount.
For debugWIRE, the RESET pin (29) doubles as the one-wire debug interface, so avoid adding strong external pull-up capacitors or drivers on RESET that could corrupt debugWIRE signaling; Microchip's MPLAB SNAP/Atmel-ICE guidance recommends a simple 10k pull-up. Keep the crystal traces on PB6/PB7 (pins 7-8) short, guarded by ground, with load capacitors per the crystal specification. Expose adequate via stitching under the TQFP-32 for ground return paths between the three GND pins (3, 5, 21).
Compliance Information
J-suffix TQFP parts from Microchip/Atmel are standard lead-free RoHS-compliant commercial microcontrollers; REACH and conflict-minerals status should be confirmed from the Microchip product compliance portal.
