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Microchip Technology AT29C010A-90TU
- Part No.:
- AT29C010A-90TU
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT29C010A-90TU.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,800
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Product details
Overview
AT29C010A-90TU from Atmel is a 1-megabit (128K × 8) 5V-only Flash memory PEROM with 70 ns read access time, sector-based reprogramming (1024 × 128-byte sectors), and dual 8K-byte boot blocks with independent programming lockout. It operates across industrial temperature range (−40°C to +85°C) and supports in-system reprogramming without high-voltage inputs - used in embedded firmware storage and BIOS/UEFI code retention.
For engineers reviewing the AT29C010A-90TU datasheet, AT29C010A-90TU pinout, AT29C010A-90TU application, or AT29C010A-90TU equivalent, key selection criteria include 90 ns AC timing compliance, TSOP-32 or PLCC-32 package compatibility, sector erase granularity, hardware/software data protection, and boot block lockout for secure bootloader storage.
Technical Context
The AT29C010A-90TU implements a sector-program architecture where each 128-byte sector is erased and programmed in a single internal cycle using an on-chip timer; address and data latches free the bus during programming. DATA polling on I/O7 and toggle-bit detection on I/O6 provide real-time program completion feedback.
It integrates dual hardware protection layers: VCC sense (program inhibited below 3.8 V) and noise filtering (WE/CE pulses <15 ns ignored), plus software data protection via three-byte unlock sequences. Boot block lockout is enabled independently for lower (0x0000–0x1FFF) and upper (0x1F000–0x1FFFF) 8K-byte regions using a seven-command algorithm.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (131,072 × 8), organized as 128K words × 8 bits - fits full firmware images for 8-bit microcontrollers. |
| Read Access Time | 90 ns max - meets timing for 11 MHz bus systems with standard wait-state logic. |
| Supply Voltage | 5 V ±10% - compatible with legacy 5V TTL/CMOS logic without level shifters. |
| Sector Size | 128 bytes per sector - enables fine-grained firmware updates without erasing entire device. |
| Endurance | >10,000 program/erase cycles per sector - supports field firmware upgrades over product lifetime. |
| Standby Current | 300 µA (industrial temp) - suitable for low-power embedded systems with periodic wake-up. |
| Operating Temp | −40°C to +85°C - qualified for industrial control, networking, and automotive under-hood auxiliary modules. |
Pinout & Package
AT29C010A-90TU is available in 32-lead TSOP (Type 1, 8 × 20 mm) and 32-lead PLCC packages. Both are RoHS-compliant, green (Pb/halide-free) options rated for industrial temperature operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K-word addressing; A7–A16 define sector address during programming. |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit parallel interface; I/O7 provides DATA polling output; I/O6 toggles during program/erase cycles. |
| CE | Chip Enable | Active-low chip select; must be low for read, program, or byte load; inhibits all operations when high. |
| OE | Output Enable | Active-low output control; places I/O pins in high-impedance state when high - prevents bus contention. |
| WE | Write Enable | Active-low write strobe; initiates byte loads and sector programming; must be high during reads. |
| VCC | Power Supply | +5 V ±10% supply; powers core logic and I/O buffers; VCC sense disables programming if voltage drops below 3.8 V. |
| GND | Ground Reference | Signal and power return path; decoupling capacitor required near VCC pin for stable operation. |
| NC | No Connect | Unbonded pins (PLCC pins 15, 31; TSOP pins 15, 32) - must remain unconnected and unstubbed. |
Key Features
| Feature | Design Value |
|---|---|
| Single 5V Reprogramming | Eliminates need for 12 V programming supplies - simplifies system power design and reduces BOM cost. |
| Dual Boot Block Lockout | Independent 8K-byte lockout for lower and upper memory regions - secures bootloader code against accidental overwrite. |
| Hardware Data Protection | VCC sensing, 5 ms power-on delay, and 15 ns noise filtering prevent spurious writes during brown-out or EMI events. |
| DATA Polling & Toggle Bit | I/O7 complement-read and I/O6 toggling enable real-time, non-intrusive program status monitoring without external timers. |
| Software Data Protection | Three-byte unlock sequence (AAh/55h/A0h) required before sector programming - prevents unintended firmware corruption. |
Applications
| Industrial PLC Firmware Storage | Legacy PC BIOS Retention |
|---|---|
Use Scenario: Storing configuration logic and motion control algorithms in programmable logic controllers with infrequent field updates. IC Role / Device Role / Timing Role: Nonvolatile firmware storage with sector-level update capability and hardware lockout for critical startup routines. Use Value: Enables safe in-field firmware patches without full chip erase; boot block lockout prevents corruption of safety-critical initialization code. | Use Scenario: Holding BIOS/UEFI code in desktop motherboards requiring backward-compatible 5V Flash interfaces. IC Role / Device Role / Timing Role: Read-mostly code storage with 90 ns access time matching legacy ISA/LPC bus timing budgets. Use Value: Direct drop-in replacement for older EPROMs; CMOS/TTL compatibility avoids level-shifter redesign. |
| Network Router Bootloader | Medical Device Calibration Data |
Use Scenario: Hosting secure bootloader code that validates signed firmware images before execution in enterprise routers. IC Role / Device Role / Timing Role: Protected boot memory with independent lockout for first 8K bytes - ensures immutable root-of-trust. Use Value: Prevents unauthorized modification of bootloader via software or hardware attack vectors; verified by Atmel's product ID codes (1Fh/D5h). | Use Scenario: Storing factory-calibrated sensor offsets and gain coefficients in portable diagnostic equipment. IC Role / Device Role / Timing Role: Low-power, high-reliability parameter storage updated only during service calibration. Use Value: 300 µA standby current extends battery life; >10,000 endurance cycles support multi-year recalibration schedules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM29LV010B-90EC | 3.3 V core with 5 V I/O tolerance; 90 ns read; 1 Mbit (128K × 8); no boot block lockout. | Lacks dedicated boot block protection; requires level translation in pure 5 V systems. | Choose when migrating to lower-voltage systems or when boot block security is not required. |
| MX29LV010CTTI-90G | 3.3 V supply only; 90 ns read; 1 Mbit; software-controlled boot block protection (not hardware-lockable). | Not pin-compatible; incompatible VCC requirement eliminates direct substitution in 5 V designs. | Consider only for new 3.3 V designs with flexible power architecture and software-managed protection. |
Compared with AM29LV010B-90EC and MX29LV010CTTI-90G, the AT29C010A-90TU uniquely delivers 5 V-only operation with hardware-enforced boot block lockout - critical for legacy industrial systems where voltage migration and physical security are constrained.
Availability
AT29C010A-90TU is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy PC BIOS retention, and network router bootloader applications requiring stable component supply and long-term lifecycle support.
Supply support for AT29C010A-90TU 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
Atmel Corporation (now part of Microchip Technology) is a semiconductor manufacturer specializing in microcontrollers, Flash memory, and secure authentication ICs.
The AT29C010A product line was designed for 5V in-system programmable firmware storage in industrial, computing, and communications equipment - emphasizing reliability, sector granularity, and hardware-based data protection.
FAQ
What is the maximum operating temperature range for the AT29C010A-90TU?
The AT29C010A-90TU is rated for industrial temperature operation from −40°C to +85°C. This specification is confirmed in the "DC and AC Operating Range" section of the official datasheet, where it explicitly lists the AT29C010A-90 variant under the Industrial range. The device maintains full AC timing compliance (90 ns tACC) and DC parameter validity across this full range.
Does the AT29C010A-90TU support true 5V-only programming without external high-voltage circuitry?
Yes, the AT29C010A-90TU supports single 5V-only reprogramming - no external 12 V supply is needed. Programming is initiated using standard 5V logic levels and specific command sequences (e.g., AAh/55h/A0h for software protection). This is documented in the "Features" and "Device Operation" sections, confirming full in-system programmability within a 5V ±10% supply envelope.
How many sectors does the AT29C010A-90TU have, and what is the size of each sector?
The AT29C010A-90TU contains 1024 sectors, each 128 bytes in size. This is explicitly stated in the "Features" list and reinforced in the "Description" section, which notes that reprogramming occurs on a sector basis and that internal latches accommodate exactly 128 bytes per sector load. Sector addressing uses A7–A16, consistent with 1024 (2¹⁰) sector count.
Can both boot blocks in the AT29C010A-90TU be locked independently?
Yes, the AT29C010A-90TU provides independent programming lockout for its two 8K-byte boot blocks - one at the lowest addresses (0x0000–0x1FFF) and one at the highest (0x1F000–0x1FFFF). The "Boot Block Programming Lockout" section confirms that the lockout feature can be activated separately for either block using distinct command sequences, and status can be verified by reading addresses 0x00002 (lower) and 0x1FFF2 (upper).
What methods does the AT29C010A-90TU provide to detect the end of a program cycle?
The AT29C010A-90TU provides two hardware-confirmed methods: DATA polling on I/O7 (complement of last loaded byte until completion) and toggle-bit detection on I/O6 (repeated toggling during programming, cessation upon completion). Both are detailed in Sections 4.7 and 4.8 of the datasheet, with associated waveforms and timing parameters (tDH = 10 ns, tOEHP = 150 ns) validating their use in real-time monitoring without external components.
AT29C010A-90TU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-TFSOP (0.724", 18.40mm Width)
- Packaging:
- Tray
- 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:
- 10ms
- Access Time:
- 90 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TSOP
AT29C010A-90TU FAQ
1.How can I place an order for AT29C010A-90TU through Aetrix?
Please submit a Request for Quotation (RFQ) for AT29C010A-90TU 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 AT29C010A-90TU reliable?
The price and inventory of AT29C010A-90TU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT29C010A-90TU is usually 5 days.
3.What payment methods are accepted for AT29C010A-90TU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT29C010A-90TU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT29C010A-90TU?
AT29C010A-90TU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT29C010A-90TU 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 AT29C010A-90TU?
For technical support, including AT29C010A-90TU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT29C010A-90TU requirements.
6.How does Aetrix verify that AT29C010A-90TU is sourced from the original manufacturer or authorized distributors?
All AT29C010A-90TU 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 AT29C010A-90TU meets industry standards.
7.What is the process for return or replacement of AT29C010A-90TU?
All AT29C010A-90TU units undergo pre-shipment inspection (PSI). If there is an issue with AT29C010A-90TU, 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 AT29C010A-90TU part is unused and in its original packaging.
Return procedure for AT29C010A-90TU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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