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Microchip Technology AT29C010A-90PI
- Part No.:
- AT29C010A-90PI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-DIP (0.600", 15.24mm)
- Datasheet:
-
AT29C010A-90PI.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,100
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Product details
Overview
AT29C010A-90PI from Atmel is a 5V-only, 1 Mbit (128K × 8) Flash memory IC designed for in-system reprogrammability in embedded boot code storage. It delivers 90 ns read access time, supports sector-based programming (1024 × 128-byte sectors), features dual 8K-byte boot blocks with independent lockout, and operates across industrial temperature range (−40°C to +85°C). It is commonly used in microcontroller-based systems requiring field-upgradable firmware.
For engineers reviewing the AT29C010A-90PI datasheet, AT29C010A-90PI pinout, AT29C010A-90PI application, or AT29C010A-90PI equivalent, key selection considerations include sector erase granularity, software/hardware data protection mechanisms, boot block lockout behavior, 5V-only reprogramming compatibility, and TSOP/PDIP/PLCC package options for board layout flexibility.
Technical Context
The AT29C010A-90PI implements a sector-program architecture where each 128-byte sector is erased and programmed in a single internal cycle using on-chip timing control. Address latching (A0–A16) and data latching (I/O0–I/O7) occur during byte load phases, freeing the bus for concurrent operations.
It integrates dual protection layers: hardware-based VCC sensing (<3.8 V inhibits programming), noise filtering (<15 ns pulse rejection), and CE/OE/WE state monitoring; plus software-controlled data protection enabled via 3-byte command sequences at addresses 5555h/2AAAh/5555h. Boot block lockout uses a 7-command algorithm to permanently disable programming of either 8K-byte region.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (131,072 × 8 bits) - provides sufficient space for boot loaders and firmware images in 8-bit microcontroller systems. |
| Read Access Time | 90 ns - ensures low-latency instruction fetch for real-time embedded applications without wait states. |
| Supply Voltage | 5 V ± 10% - eliminates need for dedicated programming voltage rails; compatible with standard TTL/CMOS logic interfaces. |
| Sector Size | 128 bytes - enables fine-grained firmware updates while minimizing risk of corruption during partial rewrites. |
| Endurance | >10,000 program/erase cycles per sector - supports long-term field maintenance and iterative firmware development. |
| Standby Current | 100 µA (industrial temp) - reduces power consumption in always-on or battery-backed systems during idle periods. |
| Operating Temp | −40°C to +85°C - qualified for industrial control, automotive body electronics, and outdoor equipment deployments. |
Pinout & Package
AT29C010A-90PI is supplied in a 32-lead Plastic Dual Inline Package (PDIP), designated as package code 32P6. Pin 1 is located at the top-left corner when viewed from the top with notch or dot orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 131,072-word addressing; A0–A6 select byte within 128-byte sector, A7–A16 select sector. |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit parallel interface for reading stored data or loading new sector contents; supports DATA polling on I/O7 and toggle detection on I/O6. |
| CE | Chip Enable | Active-low chip select; must be low for read, program, or identification modes; high state forces outputs to high-impedance. |
| OE | Output Enable | Active-low output control; used with CE to gate data output during reads; held high during programming to enable byte loads. |
| WE | Write Enable | Active-low write strobe; initiates byte load on falling edge; combined with CE and OE determines operation mode (read/program/lockout). |
| VCC | Power Supply | +5 V ± 10% supply input; powers core logic and I/O buffers; internal VCC sense circuitry prevents programming below ~3.8 V. |
| GND | Ground Reference | Primary signal and power return path; decoupling capacitor placement near this pin is critical for noise immunity during sector programming. |
| NC | No Connect | Two unconnected pins (positions 1 and 32 in PDIP); must remain unconnected to avoid unintended coupling or latch-up risks. |
Key Features
| Feature | Design Value |
|---|---|
| Single 5V Reprogramming | Eliminates need for external 12V programming supplies - simplifies system-level power design and enables true in-circuit updates. |
| Dual Boot Block Lockout | Independent 8K-byte lockout for lower (0x0000–0x1FFF) and upper (0x1E000–0x1FFFF) memory regions - secures bootloader integrity against accidental overwrite. |
| DATA Polling & Toggle Bit | I/O7 complement feedback and I/O6 toggling provide hardware-verified end-of-program detection without requiring external timers or status registers. |
| Software Data Protection | 3-byte unlock sequence (5555h/2AAAh/5555h) required before any sector program - prevents spurious writes during power transients or noise events. |
| Hardware Write Inhibit | VCC sense, 5 ms power-on delay, and simultaneous CE/OE/WE state validation block unauthorized programming attempts at silicon level. |
Applications
| Industrial PLC Firmware Storage | Medical Device Bootloader |
|---|---|
|
Use Scenario: Storing field-upgradable firmware for programmable logic controllers deployed in factory automation environments with ambient temperatures up to 85°C. IC Role / Device Role / Timing Role: Nonvolatile boot memory providing immediate code execution on power-up and enabling secure remote firmware patches via RS-485 or Ethernet interfaces. Use Value: Sector-level programming allows incremental updates without erasing entire firmware image; boot block lockout prevents corruption of safety-critical startup routines. |
Use Scenario: Holding certified bootloader and diagnostic code in Class II medical instruments requiring regulatory-compliant firmware revision control and tamper resistance. IC Role / Device Role / Timing Role: Secure initialization memory that validates application firmware signature before execution, leveraging hardware write inhibit to prevent runtime modification. Use Value: Dual boot blocks allow A/B firmware partitioning; software data protection enforces authenticated update workflows compliant with IEC 62304. |
| Automotive Body Control Module | Networking Equipment Configuration |
|
Use Scenario: Storing configuration parameters and calibration data in vehicle door modules operating across −40°C to +85°C under engine bay thermal cycling. IC Role / Device Role / Timing Role: Persistent parameter store accessed during CAN bus wake-up sequences; retains settings through ignition cycles and brown-out events. Use Value: 100 µA standby current minimizes battery drain during vehicle sleep mode; 10,000-cycle endurance supports lifetime recalibration over 15+ years. |
Use Scenario: Retaining MAC address tables, VLAN mappings, and port configurations in managed Ethernet switches requiring zero-downtime firmware upgrades. IC Role / Device Role / Timing Role: Configuration nonvolatile memory mapped into CPU address space; updated during maintenance windows without service interruption. Use Value: 90 ns read access enables direct execution of config parsing routines; sector locking isolates critical network identity data from application firmware updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM29LV010B-90JC | 3.3V core with 5V I/O tolerance; 1 Mbit density; 90 ns access; JEDEC-standard command set differs from Atmel's 5555h/2AAAh protocol. | Requires level-shifting or mixed-voltage design; lacks boot block lockout; supports wider temperature range (−40°C to +105°C). | Select when migrating to lower-power 3.3V systems or needing extended temperature support; verify command sequence compatibility in bootloader code. |
| SST39VF010-90-4C-NHE | 3.3V-only supply; 1 Mbit density; 90 ns access; includes automatic write timing and built-in command register; no hardware VCC sense. | Not 5V-compatible; requires redesign of power delivery; offers faster sector erase but no boot block protection feature. | Choose for new 3.3V designs prioritizing ease of programming and reduced BOM count; avoid if legacy 5V infrastructure or boot security is required. |
Compared with AM29LV010B-90JC and SST39VF010-90-4C-NHE, the AT29C010A-90PI uniquely combines 5V-only operation, dual boot block lockout, and hardware VCC-sense protection - making it optimal for cost-sensitive industrial upgrades where voltage compatibility and bootloader integrity are non-negotiable.
Availability
AT29C010A-90PI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device bootloader retention, automotive body control module configuration, and networking equipment parameter persistence requiring stable component supply across extended lifecycle commitments.
Supply support for AT29C010A-90PI 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, nonvolatile memory, and secure authentication devices.
The AT29C010A product line was engineered for cost-effective, field-reprogrammable boot code storage in 8-bit embedded systems - emphasizing 5V compatibility, sector-level granularity, and robust data protection for industrial and automotive applications.
FAQ
What is the maximum operating temperature range for the AT29C010A-90PI?
The AT29C010A-90PI 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. 0394F–FLASH–02/03), where the "I" suffix in the ordering code denotes industrial qualification. The device maintains full functionality-including 90 ns read access and reliable sector programming-across this full range.
Does the AT29C010A-90PI require external high-voltage programming signals?
No, the AT29C010A-90PI does not require external high-voltage programming signals. It supports 5-volt-only reprogramming using standard logic-level WE, CE, and OE controls. Internal circuitry handles all voltage translation and timing, as explicitly stated in the "Description" section: "To allow for simple in-system reprogrammability, the AT29C010A does not require high input voltages for programming."
How many sectors does the AT29C010A-90PI contain, and what is the size of each sector?
The AT29C010A-90PI contains 1024 sectors, each sized at 128 bytes. This is documented in the "Features" list and reinforced in the "Device Operation" section, which states: "Reprogramming the AT29C010A is performed on a sector basis; 128 bytes of data are loaded into the device and then simultaneously programmed." The total capacity (1024 × 128 = 131,072 bytes) aligns with its 1 Mbit (131,072 × 8) organization.
Can both boot blocks of the AT29C010A-90PI be locked independently?
Yes, the AT29C010A-90PI supports independent programming lockout for its two 8K-byte boot blocks - one at the lowest addresses (0x0000–0x1FFF) and one at the highest (0x1E000–0x1FFFF). The "BOOT BLOCK PROGRAMMING LOCKOUT" section confirms this: "The programming lockout feature can be set independently for either block," and the enable algorithm specifies separate commands for lower and upper block activation.
What methods does the AT29C010A-90PI provide to detect completion of a program cycle?
The AT29C010A-90PI provides two hardware-verified methods: DATA polling on I/O7 (complement of last written byte indicates ongoing programming; true data indicates completion) and Toggle Bit detection on I/O6 (toggling between 0 and 1 during programming, cessation indicates completion). Both are detailed in dedicated sections of the datasheet and do not require external status registers or timers.
AT29C010A-90PI 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:
- 10ms
- Access Time:
- 90 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 32-PDIP
AT29C010A-90PI FAQ
1.How can I place an order for AT29C010A-90PI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT29C010A-90PI 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-90PI reliable?
The price and inventory of AT29C010A-90PI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT29C010A-90PI is usually 5 days.
3.What payment methods are accepted for AT29C010A-90PI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT29C010A-90PI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT29C010A-90PI?
AT29C010A-90PI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT29C010A-90PI 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-90PI?
For technical support, including AT29C010A-90PI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT29C010A-90PI requirements.
6.How does Aetrix verify that AT29C010A-90PI is sourced from the original manufacturer or authorized distributors?
All AT29C010A-90PI 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-90PI meets industry standards.
7.What is the process for return or replacement of AT29C010A-90PI?
All AT29C010A-90PI units undergo pre-shipment inspection (PSI). If there is an issue with AT29C010A-90PI, 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-90PI part is unused and in its original packaging.
Return procedure for AT29C010A-90PI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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