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Microchip Technology 93AA56BT-I/MNY
- Part No.:
- 93AA56BT-I/MNY
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
93AA56BT-I/MNY.pdf
- Description:
- IC EEPROM 2KBIT MICROWIRE 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,953
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Product details
Overview
93AA56BT-I/MNY from Microchip Technology is a 2 Kbit (256 × 8-bit) low-voltage serial EEPROM with Microwire-compatible 3-wire interface, 1.8–5.5 V supply range, industrial temperature rating (–40°C to +85°C), and Pb-free MSOP-8 package. It delivers nonvolatile memory storage for configuration data in microcontroller-based systems requiring low-power, high-reliability retention.
For engineers reviewing the 93AA56BT-I/MNY datasheet, 93AA56BT-I/MNY pinout, 93AA56BT-I/MNY application, or 93AA56BT-I/MNY equivalent, key selection criteria include its dedicated 8-bit organization (no ORG pin), self-timed erase/write cycles, Ready/Busy status signaling via DO, and compatibility with legacy Microwire controllers in space-constrained industrial designs.
Technical Context
The 93AA56BT-I/MNY implements a synchronous serial interface using CS, CLK, and DI/DO lines with start-bit detection and opcode-driven command execution. It operates exclusively in x8 mode (256 × 8-bit), eliminating ORG pin dependency-unlike C-variant parts-and supports sequential read, ERAL, WRAL, and individual erase/write instructions with automatic pre-erase.
Its internal architecture includes an address counter, mode decode logic, and output buffer enabling single-instruction auto-erase-and-write cycles. Power-on reset and voltage-detect circuitry (VPOR = 1.5 V typical) ensure data protection during brown-out conditions, while EWEN/EWDS commands provide software-controlled write enable/disable security.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 2 Kbit (256 × 8-bit) - fixed x8 organization; no ORG pin required |
| VCC range | 1.8 V to 5.5 V - supports wide-supply embedded systems including battery-powered devices |
| Endurance | 1,000,000 erase/write cycles - enables frequent field updates without wear-out risk |
| Data retention | >200 years at +25°C - ensures long-term configuration integrity in unpowered storage |
| Write cycle time | 6 ms max (TWC) - deterministic self-timed programming eliminates external timing control |
| Interface | Microwire-compatible 3-wire serial (CS/CLK/DI/DO) - interoperable with legacy MCU peripherals |
| Temp range | Industrial: –40°C to +85°C - validated for operation in harsh industrial environments |
Pinout & Package
93AA56BT-I/MNY is housed in an 8-lead MSOP (Micro Small Outline Package) with 0.65 mm pitch, body dimensions 3.0 × 3.0 × 1.0 mm, and Pb-free Matte Tin finish. Pin 1 is marked by laser dot; exposed pad is optional and may be left floating or connected to VSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (CS) | Chip Select | Active-high enable; must be held ≥250 ns low between instructions; initiates self-timed write on falling edge |
| 2 (CLK) | Serial Clock | Synchronizes all data transfers; rising-edge sampling for DI/DO; stoppable mid-sequence |
| 3 (DI) | Data Input | Accepts start bit, opcodes, addresses, and write data; tied to DO only with series resistor to avoid bus conflict |
| 4 (DO) | Data Output / Status | Outputs read data or Ready/Busy status (low = busy); enters High-Z on CS fall |
| 5 (VSS) | Ground | Reference return path; connects to exposed pad if used |
| 6 (NC) | No Connect | Internally unconnected; must be left floating or tied to VSS per layout best practice |
| 7 (ORG) | Organization | No internal connection on A/B variants - pin is NC and must not be driven |
| 8 (VCC) | Power Supply | 1.8–5.5 V input; internal POR triggers at ~1.5 V to inhibit writes during power ramp |
Key Features
| Feature | Design Value |
|---|---|
| Self-timed erase/write | Eliminates need for external timing control; 6 ms max cycle time ensures predictable firmware delays |
| Automatic ERAL before WRAL | WRAL instruction includes full-array erase prior to write - no separate ERAL command needed |
| Ready/Busy status on DO | Enables polling-based firmware flow control without additional GPIO or interrupt resources |
| Power-on/off data protection | Hardware VPOR circuit blocks writes below 1.5 V - prevents corruption during brown-out or power-up |
| EWEN/EWDS security | Software-gated write enable requires explicit EWEN before each erase/write; resets to EWDS on power-up |
Applications
| Industrial Sensor Calibration | Embedded System Configuration |
|---|---|
Use Scenario: Storing factory-calibrated sensor offset/gain coefficients in programmable pressure transducers operating across –40°C to +85°C. IC Role / Device Role / Timing Role: Nonvolatile configuration memory holding calibration constants accessed at boot and updated during field recalibration. Use Value: 200-year data retention and 1M endurance guarantee stable calibration over product lifetime without refresh. | Use Scenario: Holding user-defined settings (display brightness, network ID, alarm thresholds) in HVAC controller HMI modules. IC Role / Device Role / Timing Role: Serial configuration store interfaced directly to MCU's Microwire peripheral; accessed during initialization and runtime updates. Use Value: 1.8 V minimum VCC enables direct connection to low-voltage MCUs; 6 ms write time allows responsive UI feedback. |
| Medical Device Parameter Storage | Automotive Body Control Module |
Use Scenario: Saving therapy parameters and usage logs in portable infusion pumps requiring IEC 62304 compliance. IC Role / Device Role / Timing Role: Secure, tamper-resistant memory storing critical operational data with hardware write-protection (EWDS). Use Value: Power-on data protection and EWEN/EWDS commands prevent accidental overwrite during power transitions or software faults. | Use Scenario: Retaining door lock configuration, mirror position presets, and lighting profiles in automotive BCMs. IC Role / Device Role / Timing Role: Low-power serial EEPROM interfaced to 8-bit MCU; retains settings across ignition cycles. Use Value: Industrial temp grade and 5.5 V max VCC support direct connection to 5 V automotive rails without level-shifting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 93LC56BT-I/MNY | VCC range 2.5–5.5 V; identical pinout, x8 organization, and MSOP-8 package | Not suitable for sub-2.5 V systems; higher minimum VCC limits use in ultra-low-power designs | Select when system rail is ≥2.5 V and legacy 93LC family qualification is required |
| AT25020B-MAHL-T | SPI interface (4-wire), 2 Kbit x8, 1.8–5.5 V, SOIC-8 package; no Ready/Busy pin | Requires SPI master instead of Microwire; lacks DO-based status polling - needs timeout-based firmware handling | Choose for SPI-native platforms where board layout accommodates SOIC-8 and polling is undesirable |
Compared with 93LC56BT-I/MNY, the 93AA56BT-I/MNY supports lower-voltage operation down to 1.8 V, making it preferable in battery-powered or mixed-supply systems; versus AT25020B-MAHL-T, it retains Microwire compatibility and hardware status signaling-critical for deterministic real-time firmware.
Availability
93AA56BT-I/MNY is available at Aetrix Electronics and suitable for industrial sensor calibration, embedded system configuration, medical device parameter storage, and automotive body control module applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for 93AA56BT-I/MNY 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 Inc. is a leading provider of microcontrollers, analog components, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 93AAxx series was designed specifically for cost-sensitive, low-power serial EEPROM applications in industrial and consumer electronics, emphasizing Microwire compatibility, wide VCC range, and robust data retention.
FAQ
What is the memory organization of the 93AA56BT-I/MNY?
The 93AA56BT-I/MNY features a fixed 256 × 8-bit (2 Kbit) organization. Unlike C-variant parts, it has no ORG pin and operates exclusively in x8 mode-eliminating external configuration logic and simplifying PCB layout and firmware driver design.
Does the 93AA56BT-I/MNY require an external pull-up resistor on the DO line?
No, the 93AA56BT-I/MNY does not require an external pull-up on DO. The DO pin actively drives high/low during read or status polling and enters High-Z when deselected (CS low) or idle. A series resistor is recommended only if DI and DO are shorted to prevent bus conflict.
What is the maximum clock frequency supported by the 93AA56BT-I/MNY at 3.3 V?
At VCC = 3.3 V (within 2.5–5.5 V range), the 93AA56BT-I/MNY supports up to 2 MHz clock frequency (FCLK). This is specified in Table 1-2, A1 parameter, for 2.5 V ≤ VCC < 5.5 V operation.
How does the 93AA56BT-I/MNY handle power loss during a write cycle?
The 93AA56BT-I/MNY incorporates hardware power-loss protection: its internal voltage detector (VPOR ≈ 1.5 V) disables all write operations when VCC drops below this threshold. This ensures that partial or corrupted writes cannot occur during brown-out or power-down sequences.
Is the 93AA56BT-I/MNY pin-compatible with the 93LC56BT-I/MNY?
Yes, the 93AA56BT-I/MNY and 93LC56BT-I/MNY share identical MSOP-8 pinout, x8 organization, and functional interface. However, they differ in VCC range (1.8–5.5 V vs. 2.5–5.5 V) and internal voltage detection threshold (1.5 V vs. same), so substitution requires validation of minimum supply voltage in the target system.
93AA56BT-I/MNY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 2Kbit
- Memory Organization:
- 128 x 16
- Memory Interface:
- Microwire
- Clock Frequency:
- 2 MHz
- Write Cycle Time - Word, Page:
- 6ms
- 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-TDFN (2x3)
93AA56BT-I/MNY FAQ
1.How can I place an order for 93AA56BT-I/MNY through Aetrix?
Please submit a Request for Quotation (RFQ) for 93AA56BT-I/MNY 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 93AA56BT-I/MNY reliable?
The price and inventory of 93AA56BT-I/MNY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 93AA56BT-I/MNY is usually 5 days.
3.What payment methods are accepted for 93AA56BT-I/MNY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 93AA56BT-I/MNY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 93AA56BT-I/MNY?
93AA56BT-I/MNY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 93AA56BT-I/MNY 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 93AA56BT-I/MNY?
For technical support, including 93AA56BT-I/MNY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 93AA56BT-I/MNY requirements.
6.How does Aetrix verify that 93AA56BT-I/MNY is sourced from the original manufacturer or authorized distributors?
All 93AA56BT-I/MNY 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 93AA56BT-I/MNY meets industry standards.
7.What is the process for return or replacement of 93AA56BT-I/MNY?
All 93AA56BT-I/MNY units undergo pre-shipment inspection (PSI). If there is an issue with 93AA56BT-I/MNY, 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 93AA56BT-I/MNY part is unused and in its original packaging.
Return procedure for 93AA56BT-I/MNY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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