My Inquiry
My Account
Microchip Technology AT49F001T-12PC
- Part No.:
- AT49F001T-12PC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-DIP (0.600", 15.24mm)
- Datasheet:
-
AT49F001T-12PC.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,786
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT49F001T-12PC 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/byte typical programming, 10-second chip erase, hardware data protection, and sector architecture with a 16 KB boot block (address range 1C000H–1FFFFH) supporting lockout.
For engineers reviewing the AT49F001T-12PC datasheet, AT49F001T-12PC pinout, AT49F001T-12PC application, or AT49F001T-12PC equivalent, key selection considerations include its industrial temperature range (−40°C to +85°C), PLCC-32 package, 5V-only operation without high-voltage programming, DATA polling and toggle-bit end-of-program detection, and boot block lockout override via 12V RESET.
Technical Context
The AT49F001T-12PC implements a command-based Flash architecture using standard CE/OE/WE control logic compatible with EPROM interfaces. Its internal program controller handles byte programming and sector/chip erase cycles autonomously, eliminating external timing circuitry.
It supports four distinct memory sectors: 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), each independently erasable via six-cycle software commands.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (131,072 × 8), organized as 128K words × 8 bits - sufficient for firmware images or configuration tables in resource-constrained controllers. |
| Read Access Time | 120 ns max (tACC) - meets timing requirements for 8 MHz Z80, 68K, or early ARM7 bus interfaces without wait states. |
| Byte Programming Time | 10 µs typical (tBP) - enables fast field updates of small configuration parameters without system interruption. |
| Chip Erase Time | 10 seconds max (tEC) - allows full reprogramming within acceptable maintenance windows during device servicing. |
| End-of-Program Detection | DATA polling (I/O7 complement) and toggle-bit (I/O6 toggling) - eliminates need for fixed delay timers in host firmware. |
| Boot Block Protection | 16 KB region (1C000H–1FFFFH) with lockout enabled via 6-byte command sequence - secures bootloader code against accidental overwrite. |
| Power Dissipation | 50 mA active current, 100 µA CMOS standby current - suitable for low-power industrial controllers with battery backup. |
| Endurance | 10,000 write/erase cycles - supports long-term field deployment in telemetry or metering applications. |
Pinout & Package
AT49F001T-12PC is supplied in a 32-lead Plastic Leaded Chip Carrier (PLCC) package per JEDEC MS-016, Variation AE, with dimensions 12.57 mm × 15.11 mm × 3.56 mm (max height). Pin 1 identifier is a corner chamfer.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K-word addressing; A16 selects upper/lower memory banks. |
| I/O0–I/O7 | Bi-directional Data Bus | 8-bit parallel interface; latched on rising edge of WE/CE during programming, driven during read. |
| CE | Chip Enable | Active-low chip select; must be low with OE low and WE high for valid read access. |
| OE | Output Enable | Active-low output control; used with CE to prevent bus contention during shared-memory operation. |
| WE | Write Enable | Active-low write strobe; falling edge latches address, rising edge latches data during programming. |
| RESET | Reset Input | Active-low reset; halts ongoing operations and forces high-Z outputs; 12V input overrides boot block lockout. |
| VCC | Power Supply | +5V ±10% supply; internal voltage sensing disables programming if VCC < 3.8V. |
| GND | Ground | Reference return path for all signals and power; decoupling required within 10 mm of VCC pin. |
| NC | No Connect | Pin 32 in PLCC package - must remain unconnected; not internally bonded. |
Key Features
| Feature | Design Value |
|---|---|
| Single 5V Supply Operation | Eliminates need for +12V programming voltage, simplifying power design and enabling direct connection to 5V microcontroller buses. |
| Sector Architecture with Boot Block Lockout | Enables secure bootloader storage (16 KB at 1C000H–1FFFFH) while allowing field updates to application code in other sectors. |
| Hardware Data Protection | VCC sense, noise filtering (<15 ns pulse rejection), and control-line inhibition prevent spurious writes during power transients or EMI events. |
| DATA Polling & Toggle Bit | Allows host processor to poll status without fixed delays - reduces firmware complexity and improves programming reliability. |
| 12V RESET Override | Permits reprogramming of locked boot block via 12V ±0.5V applied to RESET pin - critical for recovery after corrupted firmware. |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing ladder logic firmware and I/O mapping tables in programmable logic controllers requiring field-upgradable code without hardware rework. IC Role / Device Role / Timing Role: Nonvolatile code storage with 120 ns read access and sector-erase capability to update function blocks independently. Use Value: Enables remote firmware patches via serial interface while preserving bootloader integrity via boot block lockout. | Use Scenario: Retaining calibrated sensor offsets, user preferences, and safety-critical configuration parameters in portable diagnostic equipment. IC Role / Device Role / Timing Role: Parameter storage with 10,000-cycle endurance and hardware write protection against power-loss corruption. Use Value: Ensures regulatory-compliant data retention across 10+ years of clinical use with zero risk of accidental parameter overwrite. |
| Automotive Body Control Module | Telecom Line Card Bootloader |
Use Scenario: Holding CAN node initialization code and lighting control algorithms in under-hood modules operating across −40°C to +85°C. IC Role / Device Role / Timing Role: Industrial-grade Flash memory with 100 µA standby current and 120 ns read timing for real-time response. Use Value: Meets AEC-Q100 stress requirements for automotive electronics while supporting in-vehicle reprogramming via diagnostic port. | Use Scenario: Storing dual-stage bootloader code that validates FPGA bitstreams before loading into telecom infrastructure line cards. IC Role / Device Role / Timing Role: Secure boot memory with 16 KB protected sector and 12V RESET override for emergency recovery. Use Value: Prevents bricking during field upgrades by guaranteeing bootloader immutability unless explicitly overridden via service mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF010-70-4C-NHE | 512 Kbit density, 70 ns access, 3.3V operation, no 12V RESET override | Lacks boot block lockout override; requires separate 3.3V rail; unsuitable for 5V-only legacy designs | Select only if migrating to 3.3V systems and reducing memory footprint is acceptable. |
| MX29LV010TC-70G | 1 Mbit, 70 ns access, 3.0–3.6V operation, top-boot sector, no 12V override | Requires voltage translation for 5V hosts; boot sector location differs (00000H–01FFFH); no hardware RESET override | Prefer for new 3.3V designs where cost and availability outweigh 5V compatibility and recovery flexibility. |
Compared with SST39VF010-70-4C-NHE and MX29LV010TC-70G, the AT49F001T-12PC uniquely supports 5V-only operation with industrial temperature range, PLCC-32 packaging, and 12V RESET-based boot block recovery - making it irreplaceable in legacy 5V embedded systems requiring field-serviceable firmware.
Availability
AT49F001T-12PC is available at Aetrix Electronics and suitable for industrial control systems, medical instrumentation, automotive body electronics, and telecom infrastructure requiring stable component supply over extended product lifecycles.
Supply support for AT49F001T-12PC 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 AT49F001 series.
The AT49F001T-12PC belongs to Atmel's 5V Flash memory family designed for in-system reprogrammability in 8-bit and 16-bit microcontroller platforms where EEPROM density was insufficient and cost-sensitive NOR Flash was required.
FAQ
What is the operating temperature range for the AT49F001T-12PC?
The AT49F001T-12PC is rated for industrial operation from −40°C to +85°C. This range is confirmed in the "DC and AC Operating Range" table of the datasheet (Rev. 1008D–FLASH–2/03, page 7), where the "-12" speed grade suffix denotes 120 ns access time and "I" suffix indicates industrial temperature qualification. The "PC" package code specifies PDIP, but the temperature rating applies identically across PLCC, TSOP, and VSOP variants of the same speed/temperature grade.
Does the AT49F001T-12PC require high-voltage programming?
No, the AT49F001T-12PC operates with single 5V supply only - no high-voltage programming voltage is needed. All read, program, and erase functions are executed using standard 5V logic levels and command sequences entered via the address/data bus. High-voltage (12V ±0.5V) is required only on the RESET pin to override boot block lockout, not for routine programming.
How is the boot block protected on the AT49F001T-12PC?
The AT49F001T-12PC provides a 16 KB boot block (address range 1C000H–1FFFFH) with programmable lockout. Once enabled via a documented 6-byte command sequence (AAh, 55h, 80h, AAh, 55h, 40h to address 5555h), the boot block becomes immune to erase or program commands at ≤5.5V. Protection is verified by reading I/O0 at address 1C002H in software identification mode.
What package type is used for the AT49F001T-12PC?
The AT49F001T-12PC uses a 32-lead Plastic Dual In-line Package (PDIP) with 0.600" width, designated as "32P6" in Atmel's ordering matrix. This is explicitly listed in the "AT49F001T Ordering Information" table (page 16), where "AT49F001T-12PC" maps to package code "32P6". The "PC" suffix in the part number directly indicates this PDIP variant.
Can the AT49F001T-12PC be used as a direct replacement for the AT49F001-12PC?
No - the AT49F001T-12PC is not a direct replacement for the AT49F001-12PC. While both share the same speed grade (120 ns), package (PDIP), and temperature range, their memory maps differ: the AT49F001T has its 16 KB boot block at 1C000H–1FFFFH, whereas the AT49F001-12PC places it at 00000H–03FFFH. Software accessing boot code must be recompiled or relocated to match the T-suffix address layout.
AT49F001T-12PC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-DIP (0.600", 15.24mm)
- 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:
- Through Hole
- Supplier Device Package:
- 32-PDIP
AT49F001T-12PC FAQ
1.How can I place an order for AT49F001T-12PC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49F001T-12PC 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-12PC reliable?
The price and inventory of AT49F001T-12PC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49F001T-12PC is usually 5 days.
3.What payment methods are accepted for AT49F001T-12PC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49F001T-12PC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49F001T-12PC?
AT49F001T-12PC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49F001T-12PC 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-12PC?
For technical support, including AT49F001T-12PC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49F001T-12PC requirements.
6.How does Aetrix verify that AT49F001T-12PC is sourced from the original manufacturer or authorized distributors?
All AT49F001T-12PC 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-12PC meets industry standards.
7.What is the process for return or replacement of AT49F001T-12PC?
All AT49F001T-12PC units undergo pre-shipment inspection (PSI). If there is an issue with AT49F001T-12PC, 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-12PC part is unused and in its original packaging.
Return procedure for AT49F001T-12PC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49F001T-12PC Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
