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Microchip Technology AT93C86A-10TU-1.8
- Part No.:
- AT93C86A-10TU-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AT93C86A-10TU-1.8.pdf
- Description:
- IC EEPROM 16KBIT 3-WIRE 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:950
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Product details
Overview
AT93C86A-10TU-1.8 from Microchip Technology is a 16-Kbit three-wire serial EEPROM with user-selectable x8/x16 organization, 1.8V to 5.5V operation, industrial temperature range (–40°C to +85°C), and self-timed write cycle ≤10 ms-used for configuration storage in embedded controllers, power management ICs, and sensor calibration modules.
For engineers reviewing the AT93C86A-10TU-1.8 datasheet, AT93C86A-10TU-1.8 pinout, AT93C86A-10TU-1.8 application, or AT93C86A-10TU-1.8 equivalent, key selection criteria include low-voltage compatibility (1.8V min), Schmitt-trigger noise immunity, 1,000,000 write endurance, and support for sequential read and WRAL/ERAL bulk operations in space-constrained industrial designs.
Technical Context
The AT93C86A-10TU-1.8 implements a synchronous three-wire interface (CS/SK/DI/DO) with ORG pin-controlled memory mapping (2,048 × 8 or 1,024 × 16), enabling flexible byte- or word-oriented access without external address latches. Its internal power-on reset (POR) circuit enforces tPUP ≥ 100 µs command delay after VCC stabilization.
Timing is fully synchronous to SK rising edges: data input latched on SK↑, output shifted on SK↑, with AC specs including fSK = 250 kHz (1.8V), 1 MHz (2.7V), and 2 MHz (4.5–5.5V), plus tWP = 0.1–10 ms write cycle dependent on VCC and temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2,048 × 8 or 1,024 × 16), selectable via ORG pin-enables dual-width firmware or calibration data storage in same footprint. |
| Supply Voltage Range | 1.8V to 5.5V-supports direct interface with 1.8V logic families and legacy 3.3V/5V systems without level shifters. |
| Write Endurance | 1,000,000 cycles-ensures reliable field updates for device configuration, calibration coefficients, or security keys over product lifetime. |
| Data Retention | 100 years at 55°C-guarantees nonvolatile storage integrity in industrial environments without battery backup. |
| Max Clock Frequency | 2 MHz at 5V, 1 MHz at 2.7V, 250 kHz at 1.8V-defines maximum serial throughput for boot-time parameter loading or runtime logging. |
| Operating Temperature | –40°C to +85°C-qualified for use in automotive body control modules, industrial PLC I/O cards, and outdoor metering hardware. |
| Interface Protocol | Three-wire SPI-compatible (CS/SK/DI/DO) with no MISO/MOSI naming-simplifies PCB routing and reduces MCU GPIO count versus four-wire SPI. |
Pinout & Package
AT93C86A-10TU-1.8 uses an 8-lead TSSOP package (3.0 mm × 4.4 mm × 1.2 mm), optimized for automated assembly and thermal performance in dense layouts. Pin 1 is marked by a beveled corner or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-high enable: device ignores DI and tri-states DO when CS = low-allows multi-device daisy-chaining on shared SK/DI lines. |
| SK | Serial Data Clock | Rising-edge synchronized interface clock-controls timing of all instruction, address, and data transfers; supports variable frequency scaling per VCC. |
| DI | Serial Data Input | Accepts start bit, opcode, address, and write data-latched on SK↑; includes Schmitt trigger for robust noise rejection in electrically noisy environments. |
| DO | Serial Data Output | Drives read data or Ready/Busy status-outputs logic '1' when ready, '0' during tWP; high-impedance when CS = low. |
| GND | Ground Reference | System return path for VCC and signal currents-must be connected directly to low-impedance ground plane to maintain noise margin. |
| ORG | Organization Select | Configures memory map: tied to VCC → 1,024 × 16; tied to GND → 2,048 × 8; floating → defaults to x16 via internal 10 MΩ pull-up. |
| NC | No Connect | Pin 7 is unconnected internally-must be left floating or tied to GND; no electrical function or thermal role. |
| VCC | Power Supply | 1.8–5.5V supply input-requires local 100 nF ceramic decoupling capacitor placed within 2 mm of pin to suppress switching noise. |
Key Features
| Feature | Design Value |
|---|---|
| User-selectable x8/x16 organization | Enables optimal data alignment for 8-bit microcontrollers (x8) or 16-bit DSPs/FPGAs (x16) without changing PCB layout. |
| Schmitt-trigger, filtered inputs | Rejects fast transients and EMI up to ±2 kV HBM-eliminates need for external RC filters in motor drive or power supply control boards. |
| Self-timed write cycle (≤10 ms) | Removes requirement for external write-complete polling or timeout logic-simplifies firmware and guarantees deterministic erase-before-write behavior. |
| Bulk ERAL/WRAL commands | Erases or writes entire array in one instruction-reduces host MCU overhead during factory programming or field firmware recovery sequences. |
| Green packaging (RoHS/halide-free) | Meets IPC-J-STD-609A Class 1 halogen content limits-supports compliance for medical, aerospace, and EU export applications. |
Applications
| Industrial Sensor Calibration | Embedded System Configuration |
|---|---|
Use Scenario: Storing temperature-compensated offset/gain coefficients for analog front-end sensors in HVAC controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration store accessed at power-up via fixed-address READ; ORG pin set to x16 for efficient 16-bit coefficient retrieval. Use Value: Enables single-point calibration at factory and field recalibration without reprogramming MCU firmware-reducing service cost and downtime. | Use Scenario: Holding boot-time parameters (baud rate, network ID, display contrast) in smart energy meters with tamper-proof housing. IC Role / Device Role / Timing Role: Three-wire serial configuration memory interfaced to 8-bit MCU's GPIO bit-banged port; CS driven by dedicated output pin. Use Value: Survives 100+ years of data retention at 55°C ambient-ensures meter accuracy across 20-year deployment without battery or supercapacitor backup. |
| Power Management IC Settings | Automotive Body Control Module |
Use Scenario: Storing programmable thresholds and fault response modes for multi-rail PMICs in telecom base station power supplies. IC Role / Device Role / Timing Role: Low-voltage (1.8V) EEPROM co-located with PMIC die; accessed during POR sequence to configure rail sequencing and OVP levels. Use Value: Eliminates external trim pots and jumpers-reducing BOM count and enabling remote firmware-driven parameter updates via I²C-to-SPI bridge. | Use Scenario: Saving seat position memory, mirror angle presets, and lighting profiles in vehicle door modules operating at –40°C cold crank. IC Role / Device Role / Timing Role: Industrial-grade serial EEPROM interfaced to 16-bit automotive MCU; ORG pin tied to GND for x8 byte-aligned storage of 8-bit profile IDs. Use Value: Withstands 1,000,000 write cycles-supports daily user adjustments over 10+ years without wear-out failure or data corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95128-DRMN6TP/K | 4-wire SPI interface (no ORG pin); 128 Kbit capacity; 1.8–5.5V; 5 MHz max clock | Requires additional chip select line and supports larger data sets-better for firmware patch storage but lacks x8/x16 flexibility | Select when higher density and faster SPI throughput are needed, and board layout allows extra CS trace. |
| BR24G16NUX-10 | I²C interface (2-wire); 16 Kbit; 1.7–5.5V; 400 kHz standard mode; no ORG pin; built-in write protection | Reduces pin count vs. three-wire but adds address arbitration complexity; lacks bulk ERAL/WRAL commands | Select for ultra-low-pin-count designs where I²C bus already exists and sequential bulk operations are not required. |
Compared with M95128-DRMN6TP/K and BR24G16NUX-10, the AT93C86A-10TU-1.8 uniquely balances pin efficiency (3-wire), dual-width memory mapping, and industrial reliability-making it optimal for cost-sensitive, space-constrained embedded systems requiring field-updatable calibration or configuration without protocol translation.
Availability
AT93C86A-10TU-1.8 is available at Aetrix Electronics and suitable for industrial sensor calibration, embedded system configuration, and automotive body control module applications requiring stable component supply across extended product lifecycles.
Supply support for AT93C86A-10TU-1.8 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
Microchip Technology is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and memory solutions, with ISO 9001-certified manufacturing and global distribution.
The AT93C86A-10TU-1.8 belongs to Microchip's legacy Atmel serial EEPROM product line, designed specifically for low-power, low-voltage embedded systems requiring robust nonvolatile storage in harsh industrial and automotive environments.
FAQ
What voltage range does the AT93C86A-10TU-1.8 support, and how does it affect clock speed?
The AT93C86A-10TU-1.8 operates from 1.8V to 5.5V. Its maximum clock frequency scales with VCC: 250 kHz at 1.8V, 1 MHz at 2.7V, and 2 MHz at 4.5–5.5V. This ensures reliable timing margins across voltage domains while maintaining interoperability with mixed-supply systems-critical for brownout resilience in battery-powered AT93C86A-10TU-1.8 deployments.
How is memory organization selected on the AT93C86A-10TU-1.8, and what happens if the ORG pin is left unconnected?
Memory organization on the AT93C86A-10TU-1.8 is selected via the ORG pin: tied to VCC → 1,024 × 16; tied to GND → 2,048 × 8. If left unconnected, the internal 10 MΩ pull-up resistor selects x16 mode-verified in DS20006261A-page 6. This default behavior simplifies design for 16-bit systems while retaining flexibility for 8-bit adaptation via external tie-down.
Does the AT93C86A-10TU-1.8 require a separate erase cycle before writing, and how is write completion verified?
No, the AT93C86A-10TU-1.8 performs erase-before-write automatically within its self-timed write cycle (tWP ≤ 10 ms). Write completion is verified by sampling the DO pin after bringing CS high post-command: logic '1' indicates readiness, '0' indicates ongoing programming. This eliminates polling loops and guarantees atomicity-key for deterministic AT93C86A-10TU-1.8 integration in real-time systems.
What is the purpose of the NC pin on the AT93C86A-10TU-1.8, and how should it be handled on the PCB?
Pin 7 of the AT93C86A-10TU-1.8 is designated NC (No Connect) and has no internal connection. It must be left floating or tied to GND-never driven or connected to VCC. Microchip confirms this in DS20006261A-page 5 Table 2-1. Proper handling prevents unintended current paths and ensures full compliance with AT93C86A-10TU-1.8 qualification testing.
How does the AT93C86A-10TU-1.8 handle power-up sequencing, and what is the minimum tPUP delay?
The AT93C86A-10TU-1.8 incorporates a Power-on Reset (POR) circuit that holds the device in reset until VCC crosses VPOR ≈ 1.5V. After VCC stabilizes, the host must wait ≥100 µs (tPUP) before issuing the first command-per DS20006261A-page 11. This prevents spurious writes during ramp-up and is mandatory for reliable AT93C86A-10TU-1.8 initialization in all power domains.
AT93C86A-10TU-1.8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 16Kbit
- Memory Organization:
- 2K x 8, 1K x 16
- Memory Interface:
- 3-Wire Serial
- Clock Frequency:
- 2 MHz
- Write Cycle Time - Word, Page:
- 10ms
- Access Time:
- -
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
AT93C86A-10TU-1.8 FAQ
1.How can I place an order for AT93C86A-10TU-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C86A-10TU-1.8 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 AT93C86A-10TU-1.8 reliable?
The price and inventory of AT93C86A-10TU-1.8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT93C86A-10TU-1.8 is usually 5 days.
3.What payment methods are accepted for AT93C86A-10TU-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C86A-10TU-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C86A-10TU-1.8?
AT93C86A-10TU-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C86A-10TU-1.8 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 AT93C86A-10TU-1.8?
For technical support, including AT93C86A-10TU-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C86A-10TU-1.8 requirements.
6.How does Aetrix verify that AT93C86A-10TU-1.8 is sourced from the original manufacturer or authorized distributors?
All AT93C86A-10TU-1.8 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 AT93C86A-10TU-1.8 meets industry standards.
7.What is the process for return or replacement of AT93C86A-10TU-1.8?
All AT93C86A-10TU-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C86A-10TU-1.8, 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 AT93C86A-10TU-1.8 part is unused and in its original packaging.
Return procedure for AT93C86A-10TU-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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