ATMEGA162V-8PJ - 8MHz AVR MCU 16KB Flash 40-PDIP | Microchip
MPN: ATMEGA162V-8PJ β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.9 | $7.90 |
| 10 | $7.1 | $71.00 |
| 100 | $6.35 | $635.00 |
| 500 | $5.7 | $2,850.00 |
| 1,000 | $5.15 | $5,150.00 |
ATMEGA162V-8PJ Overview
An 8-bit AVR microcontroller is a Harvard-architecture RISC processor that fetches instructions from program Flash and data from SRAM in a single clock cycle. Within the power-management hierarchy, the ATmega family sits between small 8-pin ATtiny devices and larger ATmega128-class parts, integrating CPU, memory, timers, serial peripherals, and general-purpose I/O in a single chip for embedded control tasks.
Key features include the Advanced RISC architecture with 131 powerful instructions, most executing in a single clock cycle, and eight general-purpose working registers for fast context handling. The built-in JTAG interface enables on-chip debugging and boundary-scan testing, while self-programming Flash supports in-system firmware updates. Serial connectivity covers SPI plus dual USART interfaces for multi-channel communication.
Architecturally, the fully static core operates down to DC, allowing aggressive clock scaling for battery-powered designs. The V suffix identifies the wide low-voltage operating range of approximately 1.8V to 5.5V, which suits both single-cell lithium and 3.3V logic systems, while the 8 MHz rating balances throughput against dynamic current consumption.
Typical applications include industrial control panels, legacy RS-485/RS-232 communication nodes using the dual USARTs, and through-hole prototyping or low-volume production boards that benefit from the solderable 40-pin DIP footprint.
Design consideration: when running near the low end of the supply range, reduce the system clock to stay within the documented frequency-versus-voltage safe operating curve.
This page synthesizes distributor availability, drop-in alternatives, and practical design notes not consolidated in the manufacturer datasheet, with pricing as of 2026-09-16.
Drop-in alternatives for ATMEGA162V-8PJ 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 ATMEGA162V-8PJ (same form factor and footprint) β differing in Package, Mounting Type, Instruction Set, Supply Voltage Range, Flash Program Memory.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
ATMEGA162V-8PU
β Drop-Inπ Reference alternative (not in catalog)
ATMEGA162V-8PI
β Drop-Inπ Reference alternative (not in catalog)
ATMEGA162V-8AJ
β Drop-Inβ In Stock
$2.74 / Unit
View Datasheet βATMEGA162-16PU
β Drop-Inβ In Stock
$3.1 / Unit
View Datasheet βATMEGA162-16PI
β Drop-Inβ In Stock
$3.55 / Unit
View Datasheet βATMEGA162L-8PI
β Drop-Inβ In Stock
$3.1 / Unit
View Datasheet βATMEGA162V-1PC
β Drop-Inβ In Stock
$3.4 / Unit
View Datasheet βATMEGA162V-8PJ Maximum Ratings & Electrical Characteristics
| Core Architecture | AVR 8-bit RISC |
| Flash Program Memory | 16 KB (8K x 16), self-programming |
| SRAM | 1 KB |
| EEPROM | 512 B |
| Maximum CPU Speed | 8 MHz (V speed grade); up to 16 MIPS at 16 MHz family throughput |
| Supply Voltage Range | 1.8 V to 5.5 V (V suffix low-voltage grade) |
| Instruction Set | 131 powerful instructions, most single-cycle |
| Working Registers | 8 general purpose registers |
| Debug Interface | JTAG for on-chip debug and boundary scan |
| Serial Interfaces | SPI, UART (per distributor listing SPI/UART/TWI) |
| Package | 40-PDIP (0.600 in, 15.24 mm) |
| Mounting Type | Through Hole |
| Operating Temperature | -40C to +85C (industrial, J suffix) |
| Operation | Fully static operation |
| RoHS Status | Compliant (green package) |
ATMEGA162V-8PJ 40-pdip (0.600 in, 15.24 mm) Pin Configuration Guide
Pin configuration for ATMEGA162V-8PJ (40-pdip (0.600 in, 15.24 mm) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for ATMEGA162V-8PJ.
Refer to the datasheet for full pin configuration.
Typical Applications
ATMEGA162V-8PJ is suitable for 6 applications: Industrial Control Panels, Dual-Channel Serial Communication Nodes, Battery-Powered Embedded Systems, Prototyping and Education Platforms, Sensor Acquisition Front Ends, Legacy Equipment Service and Repair.
Industrial Control Panels
The ATMEGA162V-8PJ fits industrial control panels because its J temperature suffix covers -40C to +85C and the 16KB self-programming Flash permits field firmware updates on installed equipment. The AVR RISC core executing most of its 131 instructions in a single cycle delivers deterministic timing for relay sequencing and sensor polling at 8 MHz. Through-hole 40-pin PDIP mounting withstands vibration better than fine-pitch SMD in socketed panels, and the JTAG interface enables on-site debug of control logic during commissioning. Designers should budget the 1KB SRAM carefully, as large control tables may require external memory on the parallel bus.
Recommended
Dual-Channel Serial Communication Nodes
Legacy RS-232/RS-485 nodes benefit directly from the ATMEGA162 peripheral set, which per distributor listings includes SPI, UART, and TWI channels - the dual USART capability of the ATMEGA162 family lets one device bridge two independent serial buses. At 8 MHz the core generates standard baud rates with low timing error, and 512B EEPROM stores node addresses and configuration without external NVM. The 1.8V to 5.5V supply range simplifies integration with 3.3V transceivers in mixed-voltage racks. Budget the 1KB SRAM for modest ring buffers; for heavy multi-protocol gateways, verify buffering depth in the worst-case burst length before finalizing.
Recommended
Battery-Powered Embedded Systems
The V speed grade of the ATMEGA162V-8PJ spans roughly 1.8V to 5.5V, allowing direct operation from two alkaline cells or a single lithium cell through the discharge curve, and the fully static core can be clocked down toward DC for micropower sleep strategies. At 8 MHz the device balances throughput against dynamic current, while power-down modes with a watchdog or external interrupt wake suit data-logger duty cycles. Through-hole PDIP eases hand-built prototypes for low-volume battery products. Designers must respect the frequency-versus-voltage derating curve near 1.8V and avoid brown-out during battery end-of-life by enabling the internal brown-out detector.
Recommended
Prototyping and Education Platforms
The 0.600-inch, 15.24 mm wide 40-pin PDIP package is the defining advantage for education and prototyping: it inserts into standard DIP sockets and breadboard-adapted carriers, is hand-solderable with a basic iron, and survives repeated insertion. The JTAG on-chip debug interface lets students and engineers set breakpoints and inspect registers on real hardware using AVR JTAG tools, while AVR-GCC and AVR Studio toolchains remain mature and free. The 16KB Flash with self-programming supports bootloader-based field updates without a dedicated programmer on every bench. For classroom kits, ATMEGA162-16PU offers the same pinout at higher clock for compute-heavy lab exercises on regulated 5V supplies.
Recommended
Sensor Acquisition Front Ends
The ATMEGA162V-8PJ serves digital-sensor acquisition nodes: SPI and TWI interfaces connect ADCs, temperature, and pressure sensors, while the JTAG interface accelerates calibration code development. The industrial -40C to +85C range covers unheated outdoor and factory-floor enclosures, and 512B EEPROM retains calibration constants across power cycles without battery backup. The 8 MHz clock provides ample headroom for filtering and scaling arithmetic on 12-bit samples at kHz rates. Because the ATMEGA162 family has no internal ADC per the listed peripherals, external ADC parts are required - plan bus loading and use the SPI bus at conservative clock division for signal integrity in noisy environments.
Recommended
Legacy Equipment Service and Repair
The ATMEGA162V-8PJ is a primary service part for legacy AVR-based equipment originally designed around Atmel ATmega162 V-grade DIP parts. Its pin-to-pin compatibility across the ATMEGA162 family means a technician can substitute ATMEGA162V-8PU (indoor, 0-70C) or ATMEGA162V-8PI for scarce PJ stock without PCB rework, and the socketed DIP-40 installation allows replacement with basic tools. Self-programming Flash lets refurbished boards receive updated firmware via existing bootloaders, and JTAG retains on-board diagnostics for verification after service. Confirm firmware compatibility by checking fuse settings (clock source, JTAG enable, brown-out) against the original unit before power-up.
Recommended
Recommended Products Summary
Engineering reference data for ATMEGA162V-8PJ β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATMEGA162V-8PU | ATMEGA162V-8PI | ATMEGA162-16PU | ATMEGA162V-1PC |
|---|---|---|---|---|---|
| Package | 40-PDIP (0.600 in) | 40-PDIP - same | 40-PDIP - same | 40-PDIP - same | 40-PDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Max Clock Frequency | 8 MHz | 8 MHz | 8 MHz | 16 MHz | 1 MHz |
| Supply Voltage Range | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 4.5 V to 5.5 V | 1.8 V to 5.5 V |
| Flash / SRAM / EEPROM | 16 KB / 1 KB / 512 B | 16 KB / 1 KB / 512 B | 16 KB / 1 KB / 512 B | 16 KB / 1 KB / 512 B | 16 KB / 1 KB / 512 B |
| Operating Temperature | -40C to +85C (industrial, J) | 0C to +70C (U) | -40C to +85C (I) | 0C to +70C (U) | 0C to +70C (C) |
| JTAG Debug | Yes | Yes | Yes | Yes | Yes |
| Self-Programming Flash | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Wide low-voltage supply range (vs ATMEGA162-16PU)
- Industrial temperature range (vs ATMEGA162V-8PU)
- JTAG on-chip debugging on a DIP part (vs ATMEGA162V-1PC)
Design Notes
The V speed grade permits 1.8V to 5.5V operation, but the maximum safe clock decreases with supply voltage per the AVR frequency-versus-voltage derating curve. At 8 MHz the part typically requires roughly 2.7V or more of headroom; running 8 MHz near 1.8V risks illegal logic states during Flash writes. Enable the brown-out detector (BOD) with a threshold appropriate to your rail, and if the design must operate across the full battery discharge range, reduce the system clock below 8 MHz at the low-voltage end via the clock prescaler.
Although the 40-pin PDIP is a through-hole package, good AVR practice still applies: place 100 nF ceramic decoupling capacitors directly across VCC/GND pin pairs and across AVCC/GND, with a 10 uF bulk capacitor near the socket. If sockets are used, choose low-profile machined-pin sockets to reduce contact resistance and inductance. Keep the JTAG connector traces short if on-chip debug will be retained in production, or plan to disable JTAG via fuse and reclaim the JTAG pins as general-purpose I/O for additional signals.
The most frequent ATMEGA162 support issues are fuse misconfiguration. Clock-source fuses (CKSEL/SUT) set for an external crystal will brick boot on a board with only an internal RC, and clearing the JTAGEN fuse disables the debug interface permanently until a high-voltage programmer is available. Additionally, the ATmega162 family has no internal ADC per the listed peripherals - designs assuming on-chip analog input need an external SPI/TWI ADC. Verify fuse settings against the original device (documented in the manufacturer datasheet) before first power-up of a replacement unit.
When using the external memory-mapped parallel bus or fast SPI at 8 MHz, keep clock and address lines short and consider series termination (22-33 ohm) on long ribbon-cable runs to control ringing. The 1KB SRAM budget is small; if external SRAM is added on the bus, bus capacitance rises and drive strength degrades - limit loaded bus segments and verify timing at the low end of the supply range where output drive is weakest.
Compliance Information
Distributor listings identify the ATMEGA162V-8PJ as a GREEN package, indicating RoHS-compliant lead-free construction. REACH, halogen-free, and conflict-minerals status were not stated in the provided data.
