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ATMEGA162-16MJ Equivalent & Substitute Parts
Part Overview
The ATMEGA162-16MJ is an 8-bit AVR microcontroller manufactured by Microchip Technology, featuring 16KB of FLASH program memory, 1KB of RAM, and 512 bytes of EEPROM. This device operates at 16MHz with a supply voltage range of 2.7V to 5.5V and is housed in a 44-VQFN (7x7) surface mount package with 35 I/O pins.
The ATMEGA162-16MJ is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain flexibility, and support legacy system maintenance or redesigns requiring active component availability.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Core Processor | AVR |
| Core Size | 8-Bit |
| Speed | 16MHz |
| Program Memory Size | 16KB (8K x 16) |
| Program Memory Type | FLASH |
| EEPROM Size | 512 x 8 |
| RAM Size | 1K x 8 |
| Number of I/O | 35 |
| Voltage Supply (Vcc/Vdd) | 2.7V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
| Package / Case | 44-VQFN (7x7) Exposed Pad |
| Connectivity | EBI/EMI, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
Substitute Part Grouping Explanation
Substitution of the ATMEGA162-16MJ is determined by strict equivalence across the following critical parameters:
- Core Architecture: AVR processor family
- Memory Configuration: 16KB FLASH, 1KB RAM, 512 bytes EEPROM
- Operating Frequency: 16MHz
- Supply Voltage Range: 2.7V ~ 5.5V
- Package Type: 44-VQFN (7x7) with exposed pad
- I/O Count: 35 pins
- Peripheral Set: EBI/EMI, SPI, UART/USART, Brown-out Detect/Reset, POR, PWM, WDT
- Temperature Range: -40°C ~ 85°C
The ATMEGA162-16MU meets all these criteria and is therefore a direct functional equivalent. The primary difference between these parts is product status and packaging configuration (tray vs. standard packaging), which does not affect electrical or mechanical compatibility.
Parameter Comparison
| Parameter | ATMEGA162-16MJ | ATMEGA162-16MU |
|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology |
| Core Processor | AVR | AVR |
| Core Size | 8-Bit | 8-Bit |
| Speed | 16MHz | 16MHz |
| Program Memory Size | 16KB (8K x 16) | 16KB (8K x 16) |
| Program Memory Type | FLASH | FLASH |
| EEPROM Size | 512 x 8 | 512 x 8 |
| RAM Size | 1K x 8 | 1K x 8 |
| Number of I/O | 35 | 35 |
| Voltage Supply (Vcc/Vdd) | 2.7V ~ 5.5V | 2.7V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 44-VQFN (7x7) Exposed Pad | 44-VQFN (7x7) Exposed Pad |
| Connectivity | EBI/EMI, SPI, UART/USART | EBI/EMI, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT | Brown-out Detect/Reset, POR, PWM, WDT |
| Product Status | Obsolete | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| REACH Status | REACH Unaffected | REACH Unaffected |
Engineering Selection Recommendations
The ATMEGA162-16MU is a direct substitute for the ATMEGA162-16MJ. Both parts are ROHS3 compliant and REACH unaffected, meeting equivalent regulatory requirements. The ATMEGA162-16MU is classified as active product status, ensuring ongoing availability and supply chain support compared to the obsolete ATMEGA162-16MJ. All electrical specifications, memory configurations, peripheral sets, and package dimensions are identical between the two parts. Selection of the ATMEGA162-16MU is appropriate for new designs, redesigns, or legacy system maintenance requiring component replacement.
Frequently Asked Questions (FAQ)
Q: Are ATMEGA162-16MJ and ATMEGA162-16MU pin-compatible?
A: Yes. Both parts use the 44-VQFN (7x7) package with exposed pad and identical pinout. No PCB layout modifications are required for substitution.
Q: What is the difference between ATMEGA162-16MJ and ATMEGA162-16MU?
A: The primary differences are product status (obsolete vs. active) and packaging configuration (standard vs. tray). All electrical and mechanical specifications are identical.
Q: Can ATMEGA162-16MU be used as a direct replacement in existing designs?
A: Yes. The ATMEGA162-16MU is a direct functional and mechanical equivalent. No firmware, schematic, or PCB modifications are necessary.
Q: Are there any compliance or certification differences?
A: No. Both parts are ROHS3 compliant and REACH unaffected. Regulatory compliance is equivalent.
Q: Why is ATMEGA162-16MJ classified as obsolete?
A: Product obsolescence is determined by manufacturer lifecycle decisions. The ATMEGA162-16MU remains in active production and is the recommended substitute for ongoing supply.
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