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Microchip Technology AT27C010L-90PI
- Part No.:
- AT27C010L-90PI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-DIP (0.600", 15.24mm)
- Datasheet:
-
AT27C010L-90PI.pdf
- Description:
- IC EPROM 1MBIT PARALLEL 32DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,368
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Product details
Overview
AT27C010L-90PI from Atmel is a 128K × 8-bit one-time programmable EPROM (OTP EPROM) with 45 ns read access time, 5V ±10% supply, and industrial temperature range (–40°C to +85°C). It features CMOS/TTL-compatible I/O, rapid programming at 100 µs/byte, and dual-line control (CE/OE) for bus contention prevention in microprocessor firmware storage applications.
For engineers reviewing the AT27C010L-90PI datasheet, AT27C010L-90PI pinout, AT27C010L-90PI application, or AT27C010L-90PI equivalent, key selection criteria include standby current (100 µA max), active current (25 mA at 5 MHz), JEDEC-standard 32-lead PDIP package, and compatibility with legacy 5V microcontroller address/data buses.
Technical Context
The AT27C010L-90PI implements a parallel-addressed OTP EPROM architecture with 17 address lines (A0–A16) and 8 bidirectional data outputs (O0–O7), supporting standard read, standby, and rapid programming modes via CE, OE, and PGM control signals. Its internal logic uses high-reliability CMOS technology with 2000V ESD protection and 200 mA latchup immunity.
It operates exclusively on a single 5V supply in read mode but requires VPP = 12.0 ± 0.5V during programming. The integrated product identification code-accessed by toggling A0 while holding A9 at VH-enables automatic algorithm selection in industry-standard programmers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 128K × 8-bit (1,048,576-bit) OTP EPROM - supports full firmware image storage without external buffering |
| Read Access Time | 90 ns (tACC) - eliminates WAIT states in 5 MHz Z80, 8051, and 68K-based systems |
| VCC Supply | 5V ±10% - compatible with legacy 5V logic families and avoids need for dedicated voltage regulators |
| Active Current | 25 mA max at 5 MHz - enables direct interface with microcontroller data buses without current-limiting resistors |
| Standby Current | 100 µA max - reduces system power consumption during idle cycles in battery-backed or low-power embedded designs |
| Programming Speed | 100 µs/byte typical - cuts firmware update time by >5× vs. conventional EPROM algorithms |
| Operating Temp | –40°C to +85°C - qualified for industrial control, motor drives, and factory automation environments |
Pinout & Package
AT27C010L-90PI is supplied in a 32-lead, 0.600" wide plastic dual inline package (PDIP), per JEDEC MS-011 standard. Pin 1 is marked by a notch or dot; package dimensions are 1.64" × 0.600" × 0.220" (41.7 mm × 15.2 mm × 5.6 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit parallel address bus interface - selects one of 131,072 bytes; TTL/CMOS compatible |
| O0–O7 | Data Outputs | 8-bit bidirectional data bus - drives standard TTL loads (2.1 mA sink, –400 µA source) |
| CE | Chip Enable | Active-low chip select - enables memory access only when asserted; controls power state transition |
| OE | Output Enable | Active-low output gate - allows multiple devices on same data bus without contention |
| PGM | Program Strobe | Active-low programming trigger - initiates byte programming cycle when VPP = 12V applied |
| VCC | Power Supply | +5V core supply - powers logic and outputs; must be stable within ±10% during all operations |
| VPP | Programming Voltage | +12.0V ±0.5V input - required only during programming; must be applied after VCC and removed before VCC |
| GND | Ground | Signal and power reference - requires local 0.1 µF ceramic decoupling capacitor per device |
| NC | No Connect | Unbonded pin - must remain unconnected; no electrical or mechanical loading permitted |
Key Features
| Feature | Design Value |
|---|---|
| Rapid™ Programming Algorithm | Reduces firmware burn time to ~13 seconds for full 128K-byte array, improving production throughput |
| Integrated Product ID Code | Enables automatic device recognition in programmers via A0/A9 voltage sequencing - prevents incorrect algorithm application |
| Two-Line Control (CE/OE) | Eliminates bus contention in multi-device systems - allows shared data bus without external arbitration logic |
| High-Reliability CMOS Process | 2000V HBM ESD rating and 200 mA latchup immunity ensure robustness in manufacturing and field deployment |
| JEDEC-Standard Packages | 32P6 PDIP footprint ensures drop-in replacement for legacy EPROMs like 27C1024 and 27C512 in existing PCB layouts |
Applications
| Industrial PLC Firmware Storage | Legacy Microcontroller Boot ROM |
|---|---|
Use Scenario: Storing ladder logic and I/O mapping tables in programmable logic controllers deployed in factory automation cabinets. IC Role / Device Role / Timing Role: Non-volatile boot memory providing deterministic 90 ns read latency to ARM7 or 8051-based controller cores. Use Value: Eliminates reliance on slow serial EEPROM or flash, enabling sub-millisecond firmware fetch for real-time scan cycles. | Use Scenario: Holding BIOS and peripheral initialization code in retro-computing or test equipment using Z80 or 68000 CPUs. IC Role / Device Role / Timing Role: Parallel-addressed ROM mapped into fixed upper memory space (e.g., 0xC000–0xFFFF) with no wait-state insertion. Use Value: Guarantees reliable startup under varying ambient temperatures (–40°C to +85°C) without calibration or refresh. |
| Automotive Engine Control Calibration Data | Medical Device Configuration Memory |
Use Scenario: Storing fuel map coefficients and sensor compensation tables in engine control units operating in under-hood environments. IC Role / Device Role / Timing Role: OTP storage for immutable calibration parameters accessed during cold-start sequences. Use Value: Prevents accidental overwrite or corruption during vehicle service; withstands thermal cycling and vibration stress. | Use Scenario: Retaining FDA-approved device configuration settings (e.g., infusion pump flow rates, alarm thresholds) across power cycles. IC Role / Device Role / Timing Role: Tamper-resistant, non-volatile memory certified for Class II medical electronics with zero write endurance concerns. Use Value: Meets IEC 62304 software lifecycle requirements by eliminating runtime write failures or bit flips. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT27C010-90PI | Higher active current (35 mA vs. 25 mA); identical timing, package, and pinout | Suitable where system power budget permits higher quiescent draw during reads | Select AT27C010-90PI only if legacy design already used non-L variant and no power optimization is needed |
| MX27C1001PC-90 | Same 128K×8 organization and 90 ns speed grade; requires 12.5V VPP (vs. 12.0V); 25 mA active current | Compatible in most 5V microcontroller systems but may require minor VPP regulator adjustment | Choose MX27C1001PC-90 when sourcing diversification is required and VPP tolerance allows 12.5V operation |
Compared with AT27C010-90PI and MX27C1001PC-90, the AT27C010L-90PI delivers lower active power consumption while maintaining identical timing, pinout, and programming interface - making it optimal for thermally constrained or battery-assisted industrial systems.
Availability
AT27C010L-90PI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy microcontroller boot ROM, and automotive engine control calibration data requiring stable component supply over extended production lifecycles.
Supply support for AT27C010L-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, non-volatile memory, and secure authentication ICs.
The AT27C010(L) series was designed as a low-power, high-reliability OTP EPROM family for firmware and configuration storage in industrial, automotive, and computing systems requiring long-term data retention without refresh.
FAQ
What is the maximum operating temperature range for the AT27C010L-90PI?
The AT27C010L-90PI is rated for industrial temperature operation from –40°C to +85°C. This specification is confirmed in the "DC and AC Operating Conditions" table on page 4 of the official Atmel datasheet (Rev. 0321J–07/98), where the "Ind." column explicitly lists this range for all speed grades including the -90 variant. It does not support automotive (–40°C to +125°C) or extended commercial ranges.
Does the AT27C010L-90PI require a separate programming voltage (VPP) during normal read operation?
No, the AT27C010L-90PI operates on a single 5V supply during normal read mode. VPP = 12.0 ± 0.5V is required only during programming - and must be applied after VCC and removed before VCC per the "System Considerations" section (page 2). During read, VPP may be tied to VCC or left floating, but the datasheet recommends connecting it to VCC through a 10 kΩ resistor for noise immunity.
Can the AT27C010L-90PI be used as a direct replacement for the AT27C010-90PI in an existing design?
Yes, the AT27C010L-90PI is pin-compatible and functionally identical to the AT27C010-90PI, differing only in reduced active current (25 mA vs. 35 mA at 5 MHz) and lower standby current (100 µA vs. 1 mA). All timing parameters, pinout, voltage levels, and programming algorithms match exactly - making it a drop-in upgrade for power-sensitive implementations without PCB changes.
What decoupling capacitance is required for stable operation of the AT27C010L-90PI?
The AT27C010L-90PI requires a minimum 0.1 µF high-frequency ceramic capacitor between VCC and GND, placed as close as possible to the device pins. For systems with multiple EPROMs, a 4.7 µF bulk electrolytic capacitor should also be added near the power entry point. These values are specified in the "System Considerations" section (page 2) to suppress transient excursions during CE transitions.
How is the Integrated Product Identification Code accessed on the AT27C010L-90PI?
The AT27C010L-90PI's identification code is read by asserting CE = VIL, OE = VIL, setting A9 = 12.0V (VH), holding A1–A16 = VIL, and toggling A0 between VIL (to read Manufacturer ID = 0x1E) and VIH (to read Device Code = 0x05). This sequence is defined in Note 4 on page 3 and the "Atmel's 27C010(L) Integrated Product Identification Code" table on page 8 of the datasheet.
AT27C010L-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:
- EPROM
- Technology:
- EPROM - OTP
- Memory Size:
- 1Mbit
- Memory Organization:
- 128K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- -
- 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
AT27C010L-90PI FAQ
1.How can I place an order for AT27C010L-90PI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27C010L-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 AT27C010L-90PI reliable?
The price and inventory of AT27C010L-90PI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27C010L-90PI is usually 5 days.
3.What payment methods are accepted for AT27C010L-90PI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27C010L-90PI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27C010L-90PI?
AT27C010L-90PI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27C010L-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 AT27C010L-90PI?
For technical support, including AT27C010L-90PI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27C010L-90PI requirements.
6.How does Aetrix verify that AT27C010L-90PI is sourced from the original manufacturer or authorized distributors?
All AT27C010L-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 AT27C010L-90PI meets industry standards.
7.What is the process for return or replacement of AT27C010L-90PI?
All AT27C010L-90PI units undergo pre-shipment inspection (PSI). If there is an issue with AT27C010L-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 AT27C010L-90PI part is unused and in its original packaging.
Return procedure for AT27C010L-90PI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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