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Microchip Technology AT49F001T-12JC
- Part No.:
- AT49F001T-12JC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT49F001T-12JC.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,409
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Product details
Overview
AT49F001T-12JC from Microchip Technology (formerly Atmel) is a 5V-only, 1 Mbit (128K × 8) in-system reprogrammable Flash memory IC used for nonvolatile code and data storage in embedded microcontroller systems. It features 55 ns read access time, 10 µs typical byte programming, 10-second chip erase, hardware data protection, and sector architecture with 16 KB boot block (address range 1C000H–1FFFFH).
For engineers reviewing the AT49F001T-12JC datasheet, AT49F001T-12JC pinout, AT49F001T-12JC application, or AT49F001T-12JC equivalent, key selection considerations include its PLCC-32 package, industrial temperature range (−40°C to +85°C), 5V single-supply operation, boot block lockout capability, and compatibility with standard EPROM-like bus interface (CE/OE/WE control).
Technical Context
The AT49F001T-12JC implements a sector-organized Flash architecture with one 16 KB boot block (1C000H–1FFFFH), two 8 KB parameter blocks (1A000H–1BFFFH and 18000H–19FFFH), and two main memory blocks (10000H–17FFFH and 00000H–0FFFFH). It uses standard microprocessor timing for command sequences and supports DATA polling and toggle-bit methods for program/erase cycle completion detection.
Its internal program control logic eliminates need for external high-voltage programming supplies; all operations - read, byte program, sector erase, chip erase, and boot lockout enable - are executed via six-byte software command sequences written using CE- or WE-controlled write cycles. The RESET pin supports both reset functionality and 12V override of boot block lockout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (131,072 × 8), organized as 128K words × 8 bits |
| Read Access Time | 120 ns max - defines minimum bus cycle time for reliable read operations |
| Byte Programming Time | 10 µs typical - enables fast field updates without system interruption |
| Chip Erase Time | 10 seconds max - determines full-memory reinitialization latency |
| VCC Supply | 5V ±10% - compatible with standard TTL/CMOS logic rails, no auxiliary voltage required |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade embedded applications |
| Active Current | 50 mA max - sets power budget for active read/program modes |
| Standby Current | 300 µA max - enables low-power retention in sleep states |
Pinout & Package
AT49F001T-12JC is housed in a 32-lead Plastic Leaded Chip Carrier (PLCC) package per JEDEC MS-016, Variation AE. Pin 1 identifier is a corner chamfer; pins are arranged in a square 18.5 mm × 18.5 mm body with J-leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K-word addressing space |
| I/O0–I/O7 | Data Input/Output | 8-bit bidirectional data bus; tri-stated when CE or OE is high |
| CE | Chip Enable | Active-low chip select; must be low with OE low for valid read access |
| OE | Output Enable | Active-low output control; prevents bus contention during shared-bus operation |
| WE | Write Enable | Active-low write strobe; latches address/data during command and programming cycles |
| RESET | Reset Input | Active-low reset; 12V input enables boot block override - not available on N(T) variants |
| NC | No Connect | Pin 1 of PLCC package is unconnected; must remain floating or grounded per layout guidelines |
| VCC | Power Supply | +5V supply pin; requires local 0.1 µF ceramic decoupling |
| GND | Ground | Signal and power reference; low-inductance connection critical for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Sector Architecture with Boot Block Lockout | Enables secure firmware storage: 16 KB boot block (1C000H–1FFFFH) can be permanently locked against accidental overwrite |
| Hardware Data Protection | VCC sense (<3.8 V inhibits programming), noise filtering (<15 ns pulses ignored), and control-line interlock prevent spurious writes |
| DATA Polling & Toggle Bit Detection | Allows real-time monitoring of program/erase completion without polling timers or external status lines |
| 5V-Only Reprogrammability | Eliminates need for 12V programming supplies - simplifies system power design and reduces BOM count |
| Industrial Temperature Range | Rated for −40°C to +85°C operation - suitable for automotive control modules, industrial PLCs, and outdoor equipment |
Applications
| Embedded Boot Code Storage | Firmware Update Memory |
|---|---|
Use Scenario: Storing bootloader code in microcontroller-based systems requiring secure, persistent startup instructions. IC Role / Device Role / Timing Role: Nonvolatile storage for initial program loader; accessed at power-on reset before main application executes. Use Value: Boot block lockout ensures bootloader integrity across field firmware updates; 120 ns read time supports fast CPU fetch cycles. | Use Scenario: Field-upgradable application firmware in networked edge devices with limited connectivity windows. IC Role / Device Role / Timing Role: In-system reprogrammable code storage; erased and rewritten via host MCU over UART/SPI bridge. Use Value: Sector erase allows selective update of parameter blocks without disturbing boot code; 10 µs/byte programming minimizes downtime. |
| Industrial HMI Configuration | Legacy System ROM Replacement |
Use Scenario: Storing UI assets, language packs, and calibration tables in human-machine interface panels. IC Role / Device Role / Timing Role: Read-mostly data repository with infrequent parameter updates; accessed via parallel bus under MCU control. Use Value: Low 300 µA standby current extends battery life in semi-portable HMIs; hardware write protection prevents corruption during brownout events. | Use Scenario: Drop-in replacement for obsolete 27C010 EPROMs in legacy industrial controllers and test equipment. IC Role / Device Role / Timing Role: Pin-compatible Flash memory emulating EPROM read behavior with enhanced programmability. Use Value: Standard CE/OE/WE interface and 120 ns timing ensure direct socket replacement; no PCB redesign needed. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT49F001T-12JI | Same die and features, but in PDIP-32 package instead of PLCC-32; identical timing and command set | Preferred for through-hole prototyping or legacy board repair where PLCC socket unavailable | Select AT49F001T-12JI only if manual assembly or socket compatibility with DIP footprint is required |
| SST39VF010-120-4C-NHE | 4 Mbit density, 120 ns access, 3.3V supply; different command set and sector map; no RESET pin or 12V override | Requires voltage translation and firmware adaptation; lacks boot block lockout and hardware reset override | Choose only if higher density and lower voltage operation outweigh loss of Atmel-specific security features |
Compared with AT49F001T-12JC, AT49F001T-12JI offers identical functionality in a through-hole package for ease of hand-soldering or socket reuse, while SST39VF010 provides greater capacity at 3.3V but sacrifices boot protection, 12V override, and direct command compatibility.
Availability
AT49F001T-12JC is available at Aetrix Electronics and suitable for industrial control systems, embedded boot loaders, and legacy EPROM replacement applications requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for AT49F001T-12JC 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 full support for legacy Atmel Flash products including the AT49F series.
The AT49F001 product line was designed for cost-sensitive, industrial-grade embedded systems needing reliable, 5V-only in-system reprogrammable nonvolatile memory with hardware-based data protection.
FAQ
What is the maximum operating temperature range for the AT49F001T-12JC?
The AT49F001T-12JC is rated for industrial temperature operation from −40°C to +85°C. This specification is confirmed in the "DC and AC Operating Range" table of the official datasheet (Rev. 1008D), where the "-12" speed grade suffix denotes 120 ns access time and "I" suffix indicates industrial temperature qualification. The "JC" package code specifies PLCC-32.
Does the AT49F001T-12JC support boot block protection, and how is it enabled?
Yes, the AT49F001T-12JC supports boot block programming lockout for its 16 KB boot sector (1C000H–1FFFFH). It is enabled by executing a six-cycle command sequence: load AAH to 5555H, 55H to 2AAAH, 80H to 5555H, then AAH/55H/40H to 5555H/2AAAH/5555H. Once activated, the boot block cannot be programmed or erased at ≤5.5 V.
What package type does the AT49F001T-12JC use, and what are its key mechanical dimensions?
The AT49F001T-12JC uses a 32-lead Plastic Leaded Chip Carrier (PLCC) package designated "32J". Its body measures 18.5 mm × 18.5 mm with a maximum height of 3.556 mm. Pin 1 is identified by a corner chamfer, and lead coplanarity is specified at ≤0.102 mm - critical for reliable surface-mount reflow attachment.
How does the AT49F001T-12JC differ from the AT49F001N-12JC variant?
The AT49F001T-12JC has its 16 KB boot block located at address 1C000H–1FFFFH, whereas the AT49F001N-12JC places it at 00000H–03FFFH. Additionally, the "T" version supports RESET pin 12V override of boot lockout; the "N" version does not implement RESET functionality at all - its RESET pin is DC-connected and unused.
Can the AT49F001T-12JC be used as a direct replacement for standard EPROMs like the 27C010?
Yes, the AT49F001T-12JC is designed as a functional and pin-compatible replacement for 1 Mbit EPROMs such as the 27C010. It uses identical CE/OE/WE control signaling and matches 120 ns read timing. Unlike EPROMs, it requires no UV erasure and supports in-circuit reprogramming - enabling field updates without device removal.
AT49F001T-12JC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 1Mbit
- Memory Organization:
- 128K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 50µs
- Access Time:
- 120 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-PLCC (13.97x11.43)
AT49F001T-12JC FAQ
1.How can I place an order for AT49F001T-12JC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49F001T-12JC 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 AT49F001T-12JC reliable?
The price and inventory of AT49F001T-12JC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49F001T-12JC is usually 5 days.
3.What payment methods are accepted for AT49F001T-12JC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49F001T-12JC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49F001T-12JC?
AT49F001T-12JC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49F001T-12JC 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 AT49F001T-12JC?
For technical support, including AT49F001T-12JC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49F001T-12JC requirements.
6.How does Aetrix verify that AT49F001T-12JC is sourced from the original manufacturer or authorized distributors?
All AT49F001T-12JC 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 AT49F001T-12JC meets industry standards.
7.What is the process for return or replacement of AT49F001T-12JC?
All AT49F001T-12JC units undergo pre-shipment inspection (PSI). If there is an issue with AT49F001T-12JC, 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 AT49F001T-12JC part is unused and in its original packaging.
Return procedure for AT49F001T-12JC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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