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Microchip Technology AT27C010-12TI
- Part No.:
- AT27C010-12TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT27C010-12TI.pdf
- Description:
- IC EPROM 1MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,286
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Product details
Overview
AT27C010-12TI from Atmel is a 1-Mbit (128K × 8) one-time programmable EPROM with 45 ns read access time, 5V ±10% supply operation, and industrial temperature range (–40°C to +85°C). It features dual-line control (CE/OE), CMOS/TTL-compatible I/O, and Rapid™ programming at 100 µs/byte. Used in firmware storage for microprocessor-based embedded systems where non-volatile, pin-compatible ROM replacement is required.
For engineers reviewing the AT27C010-12TI datasheet, AT27C010-12TI pinout, AT27C010-12TI application, or AT27C010-12TI equivalent, key selection criteria include read speed grade (-12 = 120 ns), industrial temperature rating, TSOP-32 package compatibility, and OTP programming voltage requirements (VPP = 12.0 V).
Technical Context
The AT27C010-12TI implements a standard OTP EPROM architecture with asynchronous parallel interface, address decoding via A0–A16, and byte-wide data output (O0–O7). Its two enable controls-Chip Enable (CE) and Output Enable (OE)-support hierarchical bus management and prevent contention during multi-device operation.
It operates in five distinct modes: Read, Output Disable, Standby, Rapid Program, and Product Identification-each defined by specific logic levels on CE, OE, and PGM pins. Programming requires VPP = 12.0 ± 0.5 V applied only during PGM strobe, with strict sequencing (VCC before/after VPP) and transient suppression (0.1 µF capacitor across VPP–GND).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1,048,576-bit (128K × 8) OTP EPROM - supports full firmware image storage without external buffering. |
| Read Access Time | 120 ns max (tACC) - compatible with 8 MHz Z80 or 68K-class microprocessors without wait states. |
| Supply Voltage | 5V ±10% - single-rail operation eliminates need for auxiliary power supplies in legacy 5V systems. |
| Active Current | 35 mA max at 5 MHz - defines thermal budget and decoupling capacitor sizing (0.1 µF ceramic + 4.7 µF bulk). |
| Standby Current | 100 µA max - enables low-power hold mode during processor sleep or idle cycles. |
| Programming Voltage | VPP = 12.0 ± 0.5 V - requires dedicated high-voltage programming circuitry; not compatible with standard 5V-only programmers. |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments including factory automation and motor control panels. |
Pinout & Package
AT27C010-12TI is supplied in a 32-lead Plastic Thin Small Outline Package (TSOP), JEDEC MO-142 BD compliant, with 0.5 mm lead pitch and body dimensions 11.8 × 10.0 mm. Pin 1 marked by index notch; leads on two sides only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus; selects one of 131,072 bytes; TTL/CMOS compatible thresholds (VIL ≤ 0.8 V, VIH ≥ 2.0 V). |
| O0–O7 | Data Outputs | Bi-directional outputs in programming mode; high-impedance when OE or CE inactive; VOL ≤ 0.4 V @ 2.1 mA. |
| CE | Chip Enable | Active-low global device select; must be asserted before OE for valid read; enables standby current reduction when high. |
| OE | Output Enable | Active-low output gate; allows shared bus operation; tDF = 30 ns float delay ensures clean bus release. |
| PGM | Program Strobe | Active-low pulse input (100 µs ±5%) initiating byte programming; requires VPP = 12.0 V applied externally. |
| VPP | Programming Voltage | 12.0 V input during programming only; must be sequenced after VCC and removed before VCC; 0.1 µF bypass mandatory. |
| VCC | Power Supply | +5 V ±10% main supply; powers logic and outputs; ICC = 35 mA max active, ISB = 100 µA max standby. |
| GND | Ground Reference | Signal and power return; decoupling capacitor must connect directly between VCC and GND pins, as close as possible. |
| NC | No Connect | Pin 14 in TSOP package - electrically isolated; no internal connection; must remain unconnected on PCB. |
Key Features
| Feature | Design Value |
|---|---|
| Rapid™ Programming Algorithm | 100 µs/byte typical programming time with auto-verify loop - reduces production programming cycle time by >5× vs. legacy EPROMs. |
| Integrated Product ID Code | Manufacturer ID (0x1E) and Device ID (0x05) readable via A9/VH and A0 toggle - enables automatic algorithm selection in universal programmers. |
| JEDEC-Standard Packages | TSOP-32 footprint matches industry-standard layout - allows drop-in replacement of other 1-Mbit EPROMs in space-constrained designs. |
| High-Reliability Process | 2000 V HBM ESD rating and 200 mA latch-up immunity - ensures robustness in handling and board-level assembly environments. |
| Two-Line Control Interface | Independent CE and OE enables flexible memory mapping - supports partial decoding and interleaved bus architectures without glue logic. |
Applications
| Industrial PLC Firmware Storage | Legacy PC BIOS ROM Replacement |
|---|---|
|
Use Scenario: Storing ladder logic firmware in programmable logic controllers operating in factory-floor environments with wide temperature swings and electrical noise. IC Role / Device Role / Timing Role: Non-volatile program memory providing deterministic 120 ns read access to instruction fetches from Z80 or 8051 derivatives. Use Value: Industrial temperature rating (–40°C to +85°C) and 200 mA latch-up immunity ensure reliable operation despite voltage transients on shared 5V rails. |
Use Scenario: Replacing obsolete 27C1001 EPROMs in vintage PC motherboards requiring pin-compatible 1-Mbit ROM with 5V-only read operation. IC Role / Device Role / Timing Role: Boot ROM holding POST and BIOS initialization code; accessed during cold reset before DRAM initialization. Use Value: TSOP-32 package fits standard socket adapters; 5V ±10% supply and TTL-compatible inputs eliminate level-shifter requirements. |
| Automotive Instrument Cluster Display Controller | Medical Diagnostic Equipment Boot Loader |
|
Use Scenario: Holding display driver firmware in automotive instrument clusters where extended temperature operation and long-term data retention are critical. IC Role / Device Role / Timing Role: Static firmware store accessed by 16-bit microcontroller over parallel bus; no write operations after initial programming. Use Value: OTP architecture prevents accidental overwrite; 120 ns access meets timing budgets for real-time gauge updates at 60 Hz refresh rate. |
Use Scenario: Storing certified boot loader code in Class II medical devices where firmware integrity must be guaranteed for regulatory compliance. IC Role / Device Role / Timing Role: Immutable first-stage bootloader verifying digital signatures of application firmware before execution. Use Value: One-time programmability ensures tamper-proof code origin; integrated ID code enables automated verification during manufacturing test. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT27C010-12PI | Same die, PDIP-32 package instead of TSOP-32; identical timing, voltage, and temperature specs. | Through-hole mounting; larger PCB footprint; better mechanical retention but incompatible with surface-mount reflow. | Select when legacy through-hole assembly or prototyping on breadboard/perfboard is required. |
| AM27C010-12DC | AMD second-source part; same 128K × 8 organization and 120 ns speed grade; VPP = 12.5 V (±0.5 V) vs. 12.0 V. | Minor VPP tolerance difference requires verification of programmer compatibility; otherwise functionally interchangeable. | Select when sourcing diversification is needed; confirm VPP regulation stability in existing programming hardware. |
Compared with AT27C010-12PI and AM27C010-12DC, the AT27C010-12TI offers surface-mount compatibility in space-constrained industrial PCBs while maintaining identical functional behavior and programming methodology - making it optimal for new SMT production runs.
Availability
AT27C010-12TI is available at Aetrix Electronics and suitable for industrial control systems, legacy computing upgrades, and automotive instrumentation requiring stable component supply, long-lifecycle support, and verified OTP EPROM functionality.
Supply support for AT27C010-12TI 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, non-volatile memory, and secure authentication ICs.
The AT27C010 series was designed for cost-sensitive, high-reliability embedded systems needing immutable firmware storage - targeting industrial, automotive, and computing applications where EEPROM wear-out or Flash complexity were unacceptable.
FAQ
What is the maximum operating temperature range for the AT27C010-12TI?
The AT27C010-12TI is rated for industrial temperature operation from –40°C to +85°C. This specification is validated per the datasheet's DC and AC operating conditions table and applies specifically to the -TI suffix variant. The AT27C010-12TI maintains full read timing compliance (tACC ≤ 120 ns) and standby current (≤100 µA) across this entire range, making it suitable for deployment in factory automation and outdoor equipment enclosures.
Does the AT27C010-12TI require a separate programming voltage during normal read operation?
No, the AT27C010-12TI operates from a single 5V ±10% supply during read mode; VPP is only required during programming and must be disconnected or floated during normal operation. In read mode, VPP may be tied to VCC only if the system guarantees no programming pulses are asserted - however, best practice is to isolate VPP with a switch or resistor network to prevent accidental programming.
Can the AT27C010-12TI be used as a direct replacement for the AT27C010-12JC in a PLCC socket?
No - the AT27C010-12TI uses a 32-lead TSOP package while the AT27C010-12JC uses a 32-lead PLCC package; their footprints, soldering methods, and mechanical mounting are incompatible. Although both share identical logic, timing, and electrical specifications, physical replacement requires PCB redesign. For socket-based upgrades, AT27C010-12PI (PDIP) or AT27C010-12JI (PLCC) are appropriate alternatives.
What is the purpose of the PGM pin on the AT27C010-12TI, and how is it used?
The PGM pin on the AT27C010-12TI is an active-low programming strobe that initiates byte programming when asserted with a 100 µs ±5% pulse width while VPP = 12.0 V is applied. It is unused during read or standby modes. The AT27C010-12TI does not support in-system programming; PGM activation requires dedicated EPROM programmer hardware capable of generating precise high-voltage timing sequences.
How does the Integrated Product Identification Code function on the AT27C010-12TI?
The AT27C010-12TI provides a two-byte identification code (Manufacturer ID = 0x1E, Device ID = 0x05) accessible by setting A9 = 12.0 V and toggling A0 while holding all other address lines low. This feature allows automated programming equipment to verify device identity before applying programming algorithms - preventing misprogramming and ensuring correct VPP voltage and pulse width settings for the AT27C010-12TI.
AT27C010-12TI 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:
- 120 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
AT27C010-12TI FAQ
1.How can I place an order for AT27C010-12TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27C010-12TI 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 AT27C010-12TI reliable?
The price and inventory of AT27C010-12TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27C010-12TI is usually 5 days.
3.What payment methods are accepted for AT27C010-12TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27C010-12TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27C010-12TI?
AT27C010-12TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27C010-12TI 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 AT27C010-12TI?
For technical support, including AT27C010-12TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27C010-12TI requirements.
6.How does Aetrix verify that AT27C010-12TI is sourced from the original manufacturer or authorized distributors?
All AT27C010-12TI 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 AT27C010-12TI meets industry standards.
7.What is the process for return or replacement of AT27C010-12TI?
All AT27C010-12TI units undergo pre-shipment inspection (PSI). If there is an issue with AT27C010-12TI, 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 AT27C010-12TI part is unused and in its original packaging.
Return procedure for AT27C010-12TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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