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Microchip Technology AT27C010-70TU
- Part No.:
- AT27C010-70TU
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT27C010-70TU.pdf
- Description:
- IC EPROM 1MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,351
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Product details
Overview
AT27C010-70TU from Atmel is a 1-Mbit (128K × 8) one-time programmable EPROM designed for nonvolatile firmware storage in embedded microprocessor systems. It delivers 45 ns read access time, operates from a single 5V ±10% supply, and supports commercial temperature range (0°C to 70°C) in a 32-lead TSOP package. Its dual-line control (CE/OE) prevents bus contention during system boot or code execution.
For engineers reviewing the AT27C010-70TU datasheet, AT27C010-70TU pinout, AT27C010-70TU application, or AT27C010-70TU equivalent, key selection criteria include verified 45 ns tACC timing, 35 mA active current at 5 MHz, VPP = 12.0 V programming voltage, JEDEC-standard TSOP footprint compatibility, and Rapid™ programming algorithm support (100 µs/byte).
Technical Context
The AT27C010-70TU implements a CMOS OTP EPROM architecture with address decoding for 17-bit A0–A16 inputs and 8-bit bidirectional data outputs O0–O7. It uses two independent enable controls-Chip Enable (CE) and Output Enable (OE)-to manage output driver activation and power state transitions, enabling precise bus arbitration in multi-device memory maps.
Programming requires VPP = 12.0 ± 0.5 V applied to pin 29 while VCC is held at 6.5 V; the integrated Product Identification Code (Manufacturer ID = 0x1E, Device ID = 0x05) is accessed via A9 high-voltage strobe and A0 toggle, supporting automated programmer recognition and algorithm selection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1,048,576 bits (128K × 8), sufficient for full boot ROM or firmware image storage in 8-bit/16-bit MCU systems |
| Read Access Time (tACC) | 70 ns max - defines minimum CPU wait-state requirement for zero-wait-state operation on 14 MHz bus |
| VCC Supply | 5 V ±10% - compatible with standard TTL/CMOS logic rails without regulation overhead |
| Active Current (ICC) | 35 mA max at 5 MHz - determines power budget impact during code fetch bursts |
| Standby Current (ISB) | 100 µA max - enables low-power retention during processor sleep modes |
| Programming Voltage (VPP) | 12.0 ± 0.5 V - required only during one-time programming; not needed in normal read operation |
| ESD Protection | 2000 V HBM - ensures robustness during board handling and in-circuit programming |
Pinout & Package
AT27C010-70TU is housed in a 32-lead Plastic Thin Small Outline Package (TSOP), Type 1, JEDEC MO-142 BD compliant, with 0.5 mm lead pitch and body dimensions 11.8 × 10.0 × 1.0 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit binary address bus; A0 = LSB, A16 = MSB; decoded internally to select one of 128K bytes |
| O0–O7 | Data Outputs | 8-bit unidirectional data bus during read; high-impedance when CE or OE inactive |
| CE | Chip Enable | Active-low global device select; places outputs in high-Z and reduces ICC to ISB when high |
| OE | Output Enable | Active-low output gate; allows shared bus use without disabling chip - outputs float when high |
| PGM | Program Strobe | Active-low pulse input (100 µs width) that initiates byte programming when VPP = 12 V is present |
| VPP | Programming Voltage | 12 V input pin (pin 29); must be applied only during programming; tied to VCC in read mode |
| VCC | Power Supply | +5 V supply pin (pin 30); powers core logic and I/O buffers; requires local 0.1 µF ceramic decoupling |
| GND | Ground | Reference return (pin 16); must be low-inductance connection to minimize noise coupling into address/data lines |
| NC | No Connect | Pin 6 (TSOP top view); electrically isolated - must remain unconnected on PCB |
Key Features
| Feature | Design Value |
|---|---|
| Rapid™ Programming Algorithm | 100 µs/byte typical programming time - reduces production burn-in cycle by >90% vs. legacy EPROMs |
| Integrated Product ID Code | Manufacturer ID = 0x1E, Device ID = 0x05 - enables automatic algorithm selection in universal programmers |
| Two-Line Control Architecture | Independent CE and OE inputs - permits flexible memory mapping with partial decode or gated bus designs |
| JEDEC-Standard TSOP Footprint | 32T package (MO-142 BD) - ensures drop-in replacement capability across multiple EPROM vendors |
| High-Reliability Process | 200 mA latchup immunity and 2000 V ESD protection - validated for industrial assembly and field operation |
Applications
| Industrial PLC Firmware Storage | Legacy PC BIOS Backup |
|---|---|
Use Scenario: Storing ladder logic interpreter and I/O configuration tables in programmable logic controllers requiring long-term data retention without battery backup. IC Role / Device Role / Timing Role: Nonvolatile code storage with deterministic 70 ns read latency to meet real-time scan-cycle deadlines. Use Value: Eliminates need for external EEPROM or flash controller; supports direct x86/8051 bus interface with no glue logic. | Use Scenario: Providing fail-safe recovery BIOS image in desktop motherboards where main flash may become corrupted during update. IC Role / Device Role / Timing Role: Shadow ROM mapped at reset vector; accessed only on checksum failure or recovery boot path. Use Value: Guarantees boot continuity using proven OTP reliability - immune to accidental rewrites or voltage glitches. |
| Automotive Instrument Cluster Bootloader | Medical Device Calibration Data Archive |
Use Scenario: Holding immutable bootloader code in digital dashboards operating across -40°C to +85°C ambient range. IC Role / Device Role / Timing Role: Primary boot ROM executing before DRAM initialization; requires guaranteed tACC ≤ 70 ns at temperature extremes. Use Value: Meets AEC-Q100 stress requirements via qualified industrial-grade variant (AT27C010-70TI also available). | Use Scenario: Archiving factory-calibrated sensor coefficients and safety-critical lookup tables in Class IIa medical analyzers. IC Role / Device Role / Timing Role: Read-only data vault accessed during power-up self-test; no runtime writes permitted. Use Value: Provides tamper-proof, bit-perfect data integrity over 10+ year product lifecycle - no wear-out mechanism. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM27C010-70DC | Same 128K×8 organization, 70 ns tACC, but uses 32-lead PDIP (32P6) instead of TSOP | Requires PCB layout change due to different package outline and lead pitch; higher profile limits dense SMT layouts | Select when through-hole assembly or legacy socket compatibility is required |
| MX27C1000-70PC | Identical speed grade and pinout, but rated for industrial temp (-40°C to +85°C) and features 100% tested tACC | Validated for extended temperature operation without derating; suitable for outdoor or under-hood deployment | Select when operating beyond 0°C–70°C commercial range is mandatory |
Compared with AM27C010-70DC and MX27C1000-70PC, the AT27C010-70TU offers optimal fit for space-constrained SMT designs needing commercial-temp firmware storage, while retaining full functional equivalence in timing, voltage, and programming behavior.
Availability
AT27C010-70TU is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy PC BIOS backup, and automotive instrument cluster bootloader applications requiring stable component supply and long-lifecycle availability.
Supply support for AT27C010-70TU 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 fabless semiconductor company specializing in microcontrollers, nonvolatile memory, and secure authentication ICs.
The AT27C010(L) product line was engineered for reliable, low-cost firmware storage in resource-constrained 8-bit and 16-bit embedded systems where data immutability and read performance outweigh reprogrammability needs.
FAQ
What is the maximum operating temperature range for the AT27C010-70TU?
The AT27C010-70TU is specified for commercial operation from 0°C to +70°C. This range is explicitly defined in the Ordering Information table for suffix "TU", which denotes TSOP packaging and commercial temperature grade. For extended temperature operation, consider the AT27C010-70TI (industrial, –40°C to +85°C) or AT27C010-70TA (automotive, –40°C to +125°C), both sharing identical speed and electrical specs.
Does the AT27C010-70TU require a separate programming voltage during normal read operation?
No. The AT27C010-70TU operates from a single 5 V supply during read mode. VPP (12.0 V) is required only during programming and must be disconnected or floated during normal operation. The datasheet specifies that VPP may be tied to VCC in read mode, but doing so increases ICC; best practice is to isolate VPP unless programming is actively performed.
Can the AT27C010-70TU be used as a direct replacement for the AT27C010-70PC in an existing PDIP-based design?
No - the AT27C010-70TU uses a 32-lead TSOP package (32T), while the AT27C010-70PC uses a 32-lead PDIP (32P6). Though pin functions and logic are identical, the mechanical form factor, lead pitch (0.5 mm vs. 2.54 mm), and mounting method differ fundamentally. A PCB redesign is required to accommodate the surface-mount TSOP footprint and rework soldering profile.
What is the purpose of the PGM pin on the AT27C010-70TU, and how is it used?
PGM is the Program Strobe input used exclusively during one-time programming. When pulled low for 100 µs (±5%) while VPP = 12.0 V is applied, it initiates programming of the addressed byte. The AT27C010-70TU implements the Rapid™ algorithm, which applies up to 10 pulses per failing byte with verification between each. PGM remains unused and can be left unconnected or tied high during read operation.
How does the Integrated Product Identification Code function on the AT27C010-70TU?
The AT27C010-70TU embeds a two-byte identification code: Manufacturer ID = 0x1E and Device ID = 0x05. To read it, A9 is driven to 12.0 V (VID), A0 is toggled between low/high, and all other address lines (A1–A16) held low. This triggers output of the ID bytes on O0–O7, allowing universal programmers to auto-detect device type and apply correct algorithms and voltages without manual configuration.
AT27C010-70TU 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:
- EPROM
- Technology:
- EPROM - OTP
- Memory Size:
- 1Mbit
- Memory Organization:
- 128K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- -
- Access Time:
- 70 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
AT27C010-70TU FAQ
1.How can I place an order for AT27C010-70TU through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27C010-70TU 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 AT27C010-70TU reliable?
The price and inventory of AT27C010-70TU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27C010-70TU is usually 5 days.
3.What payment methods are accepted for AT27C010-70TU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27C010-70TU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27C010-70TU?
AT27C010-70TU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27C010-70TU 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 AT27C010-70TU?
For technical support, including AT27C010-70TU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27C010-70TU requirements.
6.How does Aetrix verify that AT27C010-70TU is sourced from the original manufacturer or authorized distributors?
All AT27C010-70TU 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 AT27C010-70TU meets industry standards.
7.What is the process for return or replacement of AT27C010-70TU?
All AT27C010-70TU units undergo pre-shipment inspection (PSI). If there is an issue with AT27C010-70TU, 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 AT27C010-70TU part is unused and in its original packaging.
Return procedure for AT27C010-70TU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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