My Inquiry
My Account
Microchip Technology AT28LV010-20TA
- Part No.:
- AT28LV010-20TA
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT28LV010-20TA.pdf
- Description:
- IC EEPROM 1MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,503
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT28LV010-20TA from Atmel is a 1-Mbit (128K × 8) low-voltage paged parallel EEPROM operating from a single 3.3V ±10% supply, featuring 200 ns read access time, 10 ms maximum page write cycle time, and JEDEC-approved byte-wide pinout. It supports hardware/software data protection, DATA polling, and toggle-bit write completion detection for embedded control and firmware storage in automotive systems.
For engineers reviewing the AT28LV010-20TA datasheet, AT28LV010-20TA pinout, AT28LV010-20TA application, or AT28LV010-20TA equivalent, key selection criteria include its -40°C to +125°C automotive temperature range, 128-byte page write capability, CMOS standby current of 20 µA, and TSOP-32 package compatibility with legacy parallel memory interfaces.
Technical Context
The AT28LV010-20TA implements a paged write architecture with an internal 128-byte latch and control timer, enabling simultaneous programming of 1–128 bytes per cycle without external timing components. Its dual-line chip enable (CE) and output enable (OE) control allows flexible bus contention management during read operations.
Write operation requires a three-byte software data protection (SDP) command sequence before each page or byte write, and supports two end-of-write detection methods: DATA polling on I/O7 and toggle-bit monitoring on I/O6. Address latching occurs on the falling edge of WE or CE (whichever is later), and data latching on the rising edge of either signal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (131,072 × 8), sufficient for boot code or configuration data in microcontroller-based systems |
| Read Access Time | 200 ns max - enables direct replacement of SRAM in legacy 5 MHz bus systems without wait states |
| Page Write Cycle | 10 ms max - reduces firmware update latency compared to byte-wise EEPROMs |
| Supply Voltage | 3.3V ±10% - compatible with modern low-voltage logic families and eliminates need for level shifters |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive applications per AEC-Q100 stress requirements |
| Standby Current | 20 µA CMOS - enables ultra-low-power retention in always-on vehicle modules |
| Endurance | 100,000 write/erase cycles - supports field firmware updates over full product lifecycle |
| Data Retention | 10 years at 125°C - ensures reliability in high-temperature automotive environments |
Pinout & Package
AT28LV010-20TA is packaged in a 32-lead Plastic Thin Small Outline Package (TSOP, Type I, 8 × 20 mm, package code 32T), compliant with JEDEC MO-142 Variation BD. Pin 1 identifier is marked by a beveled corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K-word addressing; A7–A16 define page boundaries for 128-byte writes |
| I/O0–I/O7 | Bi-directional Data Bus | Byte-wide parallel interface; I/O7 used for DATA polling, I/O6 for toggle-bit status reporting |
| CE | Chip Enable | Active-low device select; must be low with OE low and WE high for read access |
| OE | Output Enable | Active-low output control; used with CE to manage bus contention and enable polling/toggle operations |
| WE | Write Enable | Active-low write strobe; controls latching of addresses and data; required for SDP command sequence execution |
| VCC | Power Supply | 3.3V ±10% input; includes internal power-on delay circuitry to prevent inadvertent writes during power ramp-up |
| GND | Ground Reference | Signal and power ground reference plane for noise immunity in automotive EMI environments |
| NC | No Connect | Unbonded pins (A11, A9, A8, A13, A14, NC in TSOP layout); must remain unconnected per design |
Key Features
| Feature | Design Value |
|---|---|
| Software Data Protection (SDP) | Three-byte command sequence (AAh→55h→A0h) required before every write - prevents accidental firmware corruption during power transients |
| Page Write Architecture | Internal 128-byte latch frees address/data bus after initial load - enables background processing during 10 ms internal programming |
| DATA Polling & Toggle Bit | Dual asynchronous write-completion detection via I/O7 complement read or I/O6 toggling - eliminates need for fixed delay timers in host firmware |
| JEDEC Byte-Wide Pinout | Direct drop-in compatibility with industry-standard 27Cxxx/28Cxxx parallel memory sockets - simplifies legacy system upgrades |
| Automotive Temperature Range | Qualified from -40°C to +125°C case temperature - meets thermal requirements for engine control units and body electronics |
Applications
| Engine Control Unit (ECU) Calibration Storage | Infotainment System Boot ROM |
|---|---|
Use Scenario: Storing adaptive fuel trim tables and sensor calibration coefficients that require field updates over vehicle lifetime. IC Role / Device Role / Timing Role: Nonvolatile configuration memory accessed during ECU power-up and runtime re-calibration sequences. Use Value: 100,000-cycle endurance and 10-year data retention at 125°C ensure calibration integrity across full vehicle service life without degradation. | Use Scenario: Holding bootloader firmware and secure boot keys in automotive head units requiring secure, updatable startup code. IC Role / Device Role / Timing Role: Parallel boot memory mapped into MCU address space; accessed during cold start before DRAM initialization. Use Value: 200 ns read access enables zero-wait-state execution from reset vector, reducing boot time versus slower serial flash alternatives. |
| Advanced Driver Assistance Systems (ADAS) Sensor Fusion Module | Telematics Control Unit (TCU) Configuration Memory |
Use Scenario: Storing real-time camera/LiDAR fusion parameters and safety-critical fault logs in ADAS domain controllers. IC Role / Device Role / Timing Role: High-reliability nonvolatile memory for mission-critical data logging and parameter persistence between ignition cycles. Use Value: Hardware write inhibit (OE/CE/WE logic) and SDP prevent corruption during voltage droop events common in 12V automotive electrical systems. | Use Scenario: Maintaining cellular modem profiles, OTA update metadata, and regulatory compliance settings in connected vehicle TCUs. IC Role / Device Role / Timing Role: Configuration EEPROM interfaced via parallel bus to application processor for fast parameter reads during network handshakes. Use Value: 20 µA CMOS standby current minimizes battery drain during vehicle sleep mode, extending parked battery life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar paged parallel EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT28C010-15PC | 5V-only supply (4.5–5.5V), 150 ns access, PDIP-32 package, commercial temp only (0°C to 70°C) | Lacks automotive qualification and low-voltage operation; suitable only for legacy 5V industrial boards | Select only if system uses 5V rails and does not require extended temperature support |
| MN63F1000BGP | 3.3V supply, 128K × 8, 200 ns access, but uses SPI interface (not parallel) and SOIC-8 package | Requires protocol translation and PCB redesign; no pin compatibility with AT28LV010-20TA's TSOP-32 footprint | Consider only when board space constraints prohibit TSOP-32 or when serial interface simplifies routing |
Compared with AT28LV010-20TA, AT28C010-15PC offers faster access but lacks automotive qualification and 3.3V operation, while MN63F1000BGP provides same density and voltage but sacrifices parallel bus compatibility - making AT28LV010-20TA the sole choice for drop-in replacement in existing TSOP-32 automotive designs requiring byte-wide interface and AEC-Q100 alignment.
Availability
AT28LV010-20TA is available at Aetrix Electronics and suitable for automotive ECU calibration storage, infotainment boot ROM, and ADAS sensor fusion modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AT28LV010-20TA 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 security ICs for industrial, automotive, and consumer applications.
The AT28LV010 product line was designed specifically for automotive and industrial systems requiring reliable, low-voltage, paged parallel EEPROM with robust data protection and extended temperature operation.
FAQ
What is the maximum page write size supported by the AT28LV010-20TA?
The AT28LV010-20TA supports a maximum page write size of 128 bytes per internal programming cycle. This is enabled by its internal 128-byte page register, which latches address and data simultaneously. The A7–A16 inputs define the page boundary, and all bytes written in one cycle must reside within the same page. Writing fewer than 128 bytes is also supported, with only the addressed locations being modified - eliminating unnecessary wear on adjacent memory cells. This capability is confirmed in the device's AC Write Characteristics and Programming Algorithm sections.
Does the AT28LV010-20TA require external high-voltage programming circuitry?
No, the AT28LV010-20TA does not require external high-voltage programming circuitry. It operates from a single 3.3V ±10% supply for both read and write operations. All internal programming voltages are generated on-chip using charge pump circuitry. The device uses software data protection (SDP) - a three-byte command sequence - to enable write functionality, eliminating the need for VPP pins or external 12V supplies. This is explicitly stated in the "Description" and "Features" sections of the datasheet.
How is write completion detected on the AT28LV010-20TA?
Write completion on the AT28LV010-20TA can be detected using two independent hardware methods: DATA polling on I/O7 and toggle-bit monitoring on I/O6. During a write cycle, reading the last written byte returns the complement of the data on I/O7; when true data appears, the write is complete. Alternatively, repeated reads cause I/O6 to toggle until completion, after which it stabilizes. Both methods allow the host processor to poll asynchronously without fixed delays - a key feature confirmed in Sections 4.3 and 4.4 of the official datasheet.
What package type is used for the AT28LV010-20TA, and is it RoHS-compliant?
The AT28LV010-20TA uses a 32-lead Plastic Thin Small Outline Package (TSOP, Type I, 8 × 20 mm, package code 32T). It is offered in a green (Pb/halide-free) packaging option per JEDEC standards, satisfying RoHS Directive 2011/65/EU requirements. The "TA" suffix in the part number denotes automotive temperature range (-40°C to +125°C) and TSOP packaging, as documented in Section 23.1 "Ordering Information" of the datasheet.
Can the AT28LV010-20TA be used as a direct replacement for standard 27C010 EPROMs?
No, the AT28LV010-20TA cannot serve as a direct replacement for 27C010 EPROMs due to fundamental architectural differences. While both are 1-Mbit parallel memories with JEDEC-compatible pinouts, the AT28LV010-20TA is an EEPROM requiring software data protection commands and internal page write timing, whereas 27C010 is an EPROM programmed with 12.5V VPP and erased by UV light. Additionally, AT28LV010-20TA lacks UV-erasable windows and uses different write enable logic. These distinctions are clearly outlined in Sections 4.2 and 17 of the datasheet.
AT28LV010-20TA 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:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 1Mbit
- Memory Organization:
- 128K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 10ms
- Access Time:
- 200 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TSOP
AT28LV010-20TA FAQ
1.How can I place an order for AT28LV010-20TA through Aetrix?
Please submit a Request for Quotation (RFQ) for AT28LV010-20TA 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 AT28LV010-20TA reliable?
The price and inventory of AT28LV010-20TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT28LV010-20TA is usually 5 days.
3.What payment methods are accepted for AT28LV010-20TA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT28LV010-20TA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT28LV010-20TA?
AT28LV010-20TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT28LV010-20TA 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 AT28LV010-20TA?
For technical support, including AT28LV010-20TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT28LV010-20TA requirements.
6.How does Aetrix verify that AT28LV010-20TA is sourced from the original manufacturer or authorized distributors?
All AT28LV010-20TA 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 AT28LV010-20TA meets industry standards.
7.What is the process for return or replacement of AT28LV010-20TA?
All AT28LV010-20TA units undergo pre-shipment inspection (PSI). If there is an issue with AT28LV010-20TA, 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 AT28LV010-20TA part is unused and in its original packaging.
Return procedure for AT28LV010-20TA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT28LV010-20TA Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
