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Microchip Technology ATJTAGICE2
- Part No.:
- ATJTAGICE2
- Manufacturer:
- Microchip Technology
- Category:
- Programmers, Emulators, and Debuggers
- Package:
- Datasheet:
-
ATJTAGICE2.pdf
- Description:
- AVR ON-CHIP D-BUG SYSTEM
- Quantity:
- Payment:
- Shipping:
Inventory:3,363
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Product details
Overview
ATJTAGICE2 from Microchip Technology (formerly Atmel) is a USB/RS-232–connected on-chip debug emulator for AVR 8-bit RISC microcontrollers, supporting both IEEE 1149.1 JTAG and debugWIRE interfaces, with real-time emulation, program/data breakpoints, and target voltage range 1.8–5.5 V for use in embedded firmware development labs.
For engineers reviewing the ATJTAGICE2 datasheet, ATJTAGICE2 pinout, ATJTAGICE2 application, or ATJTAGICE2 equivalent, this tool enables full register/memory access, flash/EEPROM/SRAM inspection, fuse/lock bit programming, and real-time breakpoint control across 20+ supported AVR devices including ATmega128, ATmega2560, ATtiny13, and ATmega168.
Technical Context
The ATJTAGICE2 implements a host-target bridge using USB 1.1 or RS-232 physical layer, translating AVR Studio commands into JTAG state-machine sequences or debugWIRE serial protocol over reset pin. It supports scan-chain daisy-chaining of multiple JTAG devices and automatic firmware upgrades via AVR Studio.
debugWIRE mode uses only the RESET pin for bidirectional communication, eliminating dedicated debug pins; JTAG mode requires TCK/TMS/TDO/TDI signals. Both modes provide full visibility into CPU registers, memory maps, and peripheral status without halting system clocks during breakpoint evaluation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Interface Type | USB 1.1 or RS-232 - enables direct PC connection without external level shifters or USB-to-serial adapters |
| Supported Protocols | JTAG (IEEE 1149.1) and debugWIRE - covers full AVR portfolio from high-pin-count to 8-pin SOIC devices |
| Target Voltage Range | 1.8–5.5 V - allows debugging across low-voltage ATtiny and 5 V ATmega families without hardware modification |
| Power Source | 9–12 V DC adapter or USB bus power - eliminates need for external bench supply in portable lab setups |
| Breakpoint Capability | Program memory (single address or range) and data memory (single address or range) - enables precise firmware flow analysis without code instrumentation |
| Memory Access | Full read/write to Flash, EEPROM, SRAM, register file, and fuse/lock bits - permits in-system reprogramming and configuration verification |
Availability
ATJTAGICE2 is available at Aetrix Electronics and suitable for embedded firmware validation, production programming line support, and university AVR teaching labs requiring stable component supply and long-term toolchain continuity.
Supply support for ATJTAGICE2 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microchip Technology acquired Atmel in 2016 and maintains legacy AVR development tools under its ecosystem. Atmel originally designed the ATJTAGICE2 as a cost-effective, studio-integrated debug solution for 8-bit microcontroller developers.
The ATJTAGICE2 belongs to Atmel's AVR On-Chip Debug System product line, engineered specifically to reduce firmware bring-up time by enabling real-time, non-intrusive observation and control of AVR internal resources during active target operation.
FAQ
What interface options does the ATJTAGICE2 support for connecting to a host PC?
The ATJTAGICE2 supports both USB 1.1 and RS-232 physical interfaces to connect to a host PC. USB operation requires no external power supply, while RS-232 mode needs an external 9–12 V DC adapter. Both interfaces are fully supported by AVR Studio and enable identical debug functionality for the ATJTAGICE2.
Which AVR microcontrollers are compatible with the ATJTAGICE2 via debugWIRE?
The ATJTAGICE2 supports debugWIRE on ATtiny13, ATtiny2313, ATtiny25, ATtiny45, ATmega48, ATmega88, and ATmega168. debugWIRE uses only the RESET pin, making it ideal for small-package AVRs where dedicated JTAG pins are unavailable. This capability is confirmed in the official ATJTAGICE2 documentation and applies exclusively to these listed devices.
Can the ATJTAGICE2 program fuse and lock bits on supported AVR devices?
Yes, the ATJTAGICE2 provides full read/write access to fuse and lock bits on all supported AVR microcontrollers. This function is integrated into AVR Studio's device programming interface and is verified for devices including ATmega128, ATmega2560, and ATmega16. The ATJTAGICE2 performs this operation safely within the target voltage range of 1.8–5.5 V.
Does the ATJTAGICE2 require external power when used with USB?
No, the ATJTAGICE2 draws power directly from the USB port when operating in USB mode. In RS-232 mode, it requires an external 9–12 V DC power supply. The dual-power architecture ensures flexibility across lab environments - the ATJTAGICE2 functions identically in both configurations without performance or feature trade-offs.
How does the ATJTAGICE2 handle firmware updates for new AVR devices?
Firmware updates for the ATJTAGICE2 are delivered automatically through AVR Studio releases. When a new version of AVR Studio is installed, it detects the connected ATJTAGICE2 and upgrades its internal firmware to support newly released AVR devices with JTAG or debugWIRE capability - no manual bootloader process or separate utility is required for the ATJTAGICE2.
ATJTAGICE2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- AVR®
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Emulator (In-Circuit/In-System)
- For Use With/Related Products:
- AVR®
- Contents:
- Board(s), Cable(s)
ATJTAGICE2 FAQ
1.How can I place an order for ATJTAGICE2 through Aetrix?
Please submit a Request for Quotation (RFQ) for ATJTAGICE2 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ATJTAGICE2 reliable?
The price and inventory of ATJTAGICE2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATJTAGICE2 is usually 5 days.
3.What payment methods are accepted for ATJTAGICE2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATJTAGICE2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATJTAGICE2?
ATJTAGICE2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATJTAGICE2 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ATJTAGICE2?
For technical support, including ATJTAGICE2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATJTAGICE2 requirements.
6.How does Aetrix verify that ATJTAGICE2 is sourced from the original manufacturer or authorized distributors?
All ATJTAGICE2 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ATJTAGICE2 meets industry standards.
7.What is the process for return or replacement of ATJTAGICE2?
All ATJTAGICE2 units undergo pre-shipment inspection (PSI). If there is an issue with ATJTAGICE2, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ATJTAGICE2 part is unused and in its original packaging.
Return procedure for ATJTAGICE2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ATJTAGICE2 Tags
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