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Microchip Technology AT27C010-55TC
- Part No.:
- AT27C010-55TC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT27C010-55TC.pdf
- Description:
- IC EPROM 1MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,643
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Product details
Overview
AT27C010-55TC from Atmel is a 1-Mbit (128K × 8) one-time programmable EPROM designed for nonvolatile firmware storage in microprocessor systems. It delivers 45 ns read access time, operates from a single 5V ±10% supply, and supports JEDEC-standard 32-lead TSOP packaging. Its dual-line control (CE/OE) prevents bus contention in embedded boot memory applications.
For engineers reviewing the AT27C010-55TC datasheet, AT27C010-55TC pinout, AT27C010-55TC application, or AT27C010-55TC equivalent, key selection criteria include verified 55 ns tACC timing, industrial temperature range (-40°C to +85°C), 35 mA active current at 5 MHz, and compatibility with standard EPROM programmers using VPP = 13.0 V during programming.
Technical Context
The AT27C010-55TC 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 state and power mode transitions.
Programming relies on the Rapid™ algorithm with 100 µs/byte pulse width at VPP = 13.0 V and VCC = 6.5 V, while read operation requires only 5 V. The device integrates product identification logic (A9 = 12.0 V, A0 toggled) to support automated programmer recognition of manufacturer and device code.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1,048,576-bit (128K × 8) OTP EPROM - fixed firmware storage without re-erasure capability |
| Read Access Time (tACC) | 55 ns max - enables direct interface with 12–18 MHz microprocessors without wait states |
| Supply Voltage | 5 V ±10% - compatible with standard TTL/CMOS logic rails and eliminates need for auxiliary supplies |
| Active Current (ICC) | 35 mA max at 5 MHz - defines power budget for high-speed read bursts in boot ROM subsystems |
| Standby Current (ISB) | 100 µA max - ensures low quiescent draw during system sleep or idle modes |
| Programming Voltage (VPP) | 13.0 V ±0.25 V - required only during initial one-time programming; not used in normal operation |
| Operating Temperature | -40°C to +85°C - qualified for industrial-grade embedded control and instrumentation environments |
Pinout & Package
AT27C010-55TC 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 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit parallel address bus; selects one of 131,072 bytes for read or program access |
| O0–O7 | Data Outputs | 8-bit tristate data bus; driven only when CE = OE = low; high-impedance otherwise |
| CE | Chip Enable | Primary chip-select; disables outputs and reduces current to standby level when high |
| OE | Output Enable | Secondary output gate; allows shared bus operation by enabling/disabling data drivers independently of CE |
| PGM | Program Strobe | Active-low pulse input that initiates byte programming when VPP = 13 V and address valid |
| VCC | Power Supply | +5 V supply for logic and output drivers; must be applied before/removed after VPP |
| VPP | Programming Voltage | +13 V input required only during programming; internally disconnected during read mode |
| GND | Ground Reference | Signal and power return; decoupling capacitor (0.1 µF ceramic) required adjacent to pin |
| NC | No Connect | Unbonded pin; must remain unconnected per design - no external loading or routing |
Key Features
| Feature | Design Value |
|---|---|
| Rapid™ Programming Algorithm | 100 µs/byte typical programming time - reduces production burn-in cycle duration and improves throughput |
| Integrated Product Identification Code | Manufacturer ID (0x1E) and Device Code (0x05) readable via A9/VH and A0 toggle - enables auto-detection in universal programmers |
| Two-Line Control Architecture | Independent CE and OE inputs - supports flexible bus arbitration and partial-memory disable without external logic |
| High-Reliability Process | 2000 V HBM ESD rating and 200 mA latchup immunity - ensures robustness in handling and board-level integration |
| JEDEC-Standard Packaging Options | 32-lead TSOP (32T), PLCC (32J), and PDIP (32P6) - enables drop-in replacement across form factors without redesign |
Applications
| Industrial PLC Firmware Storage | Legacy PC BIOS ROM |
|---|---|
Use Scenario: Storing ladder logic and I/O configuration in programmable logic controllers deployed in factory automation cabinets. IC Role / Device Role / Timing Role: Nonvolatile boot memory providing immediate instruction fetch upon power-up; accessed via 8-bit data bus and 17-bit address lines. Use Value: 55 ns tACC eliminates wait-state insertion in 16-bit microcontroller-based control loops, maintaining deterministic scan cycle timing. |
Use Scenario: Holding POST routines and hardware initialization code in desktop motherboards prior to OS load. IC Role / Device Role / Timing Role: Primary boot ROM mapped to upper memory segment (e.g., F0000h–FFFFFh); selected via chipset-generated CE signal. Use Value: Single 5 V supply simplifies power delivery; industrial temp grade supports operation in poorly ventilated chassis environments. |
| Medical Instrument Bootloader | Telecom Line Card Configuration |
Use Scenario: Securing bootloader firmware in FDA-cleared diagnostic devices where field updates are prohibited post-certification. IC Role / Device Role / Timing Role: OTP memory preventing accidental or malicious modification of critical startup code; programmed once during manufacturing. Use Value: High-reliability CMOS process and 200 mA latchup immunity ensure immunity to transient noise in hospital-grade power systems. |
Use Scenario: Storing hardware-specific calibration tables and interface parameters on carrier-grade DSLAM line cards. IC Role / Device Role / Timing Role: Configuration store accessed during card initialization; contents validated via checksum before DSP initialization. Use Value: 128K × 8 capacity accommodates multiple regional variants and revision histories within one footprint. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT27C010-55PC | Same core spec, but in 32-lead PDIP (32P6) package - 0.600" width, through-hole mounting | Preferred for prototyping, legacy board repair, or sockets requiring DIP form factor | Select when mechanical compatibility with existing DIP footprints or manual rework requirements dominate |
| AT27C010-55JI | Same speed grade (55 ns), same capacity, but PLCC (32J) package and industrial temp range - identical electrical specs | Suitable for surface-mount designs needing higher I/O density and thermal cycling resilience | Choose when board space constraints favor J-lead geometry and reflow assembly is used |
Compared with AT27C010-55TC, the -55PC offers through-hole reliability and socket compatibility, while the -55JI provides superior thermal cycling performance in compact SMT layouts - all three share identical timing, programming, and logic behavior.
Availability
AT27C010-55TC is available at Aetrix Electronics and suitable for industrial control systems, legacy computing platforms, and medical device boot memory requiring stable component supply over extended production lifecycles.
Supply support for AT27C010-55TC 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 company specializing in microcontrollers, nonvolatile memory, and secure authentication ICs.
The AT27C010(L) series was developed for cost-sensitive, high-reliability embedded systems requiring immutable firmware storage - targeting industrial, telecom, and computing applications where EEPROM endurance or Flash complexity is unnecessary.
FAQ
What is the maximum operating frequency supported by the AT27C010-55TC?
The AT27C010-55TC does not operate at a clock frequency - it is an asynchronous memory device. Its 55 ns access time (tACC) supports reliable interfacing with microprocessors running up to ~12 MHz bus cycles. For example, when used with an 80C188 or Motorola 68EC000, no WAIT states are needed due to the guaranteed 55 ns read latency. The AT27C010-55TC's timing is defined by DC and AC parameters, not a clock input.
Can the AT27C010-55TC be reprogrammed after initial programming?
No, the AT27C010-55TC is a one-time programmable (OTP) EPROM. Once programmed, its memory cells cannot be erased or rewritten. UV erasure is not possible - unlike UV-erasable EPROMs, this device lacks a quartz window. Programming requires VPP = 13.0 V and follows the Rapid™ algorithm; subsequent attempts to reprogram will fail or corrupt data. The AT27C010-55TC is intended for final firmware images locked at manufacturing.
What decoupling capacitors are required for stable operation of the AT27C010-55TC?
The AT27C010-55TC requires a 0.1 µF ceramic capacitor placed between VCC and GND, mounted as close as possible to the device pins to suppress high-frequency transients during CE transitions. For boards 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 of the AT27C010-55TC datasheet to prevent voltage excursions exceeding absolute maximum ratings.
Does the AT27C010-55TC support common EPROM programmers?
Yes, the AT27C010-55TC is supported by industry-standard EPROM programmers including Data I/O PS-3000, BP Microsystems BPM316, and Xeltek SuperPRO series. Its Integrated Product Identification Code (0x1E/0x05) enables automatic device detection. Programming requires VPP = 13.0 V, VCC = 6.5 V, and adherence to the Rapid™ algorithm's 100 µs PGM pulse width - all parameters recognized by compatible programmers. The AT27C010-55TC's TSOP-32 footprint may require a ZIF adapter for some legacy programmers.
How does the AT27C010-55TC differ from the AT27C010L-55TC?
The AT27C010-55TC draws up to 35 mA active current at 5 MHz, while the AT27C010L-55TC consumes only 25 mA under identical conditions - reflecting a low-power variant optimized for battery-backed or thermally constrained systems. Both share identical 55 ns access time, 128K × 8 organization, TSOP-32 packaging, and programming characteristics. The 'L' suffix denotes reduced ICC, not speed or functionality differences. The AT27C010-55TC remains appropriate where higher drive strength or legacy design compatibility is prioritized.
AT27C010-55TC 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:
- 55 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TSOP
AT27C010-55TC FAQ
1.How can I place an order for AT27C010-55TC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27C010-55TC 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 AT27C010-55TC reliable?
The price and inventory of AT27C010-55TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27C010-55TC is usually 5 days.
3.What payment methods are accepted for AT27C010-55TC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27C010-55TC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27C010-55TC?
AT27C010-55TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27C010-55TC 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 AT27C010-55TC?
For technical support, including AT27C010-55TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27C010-55TC requirements.
6.How does Aetrix verify that AT27C010-55TC is sourced from the original manufacturer or authorized distributors?
All AT27C010-55TC 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 AT27C010-55TC meets industry standards.
7.What is the process for return or replacement of AT27C010-55TC?
All AT27C010-55TC units undergo pre-shipment inspection (PSI). If there is an issue with AT27C010-55TC, 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 AT27C010-55TC part is unused and in its original packaging.
Return procedure for AT27C010-55TC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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