47L64T-I/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
The Microchip 47L64T-I/SN is a 64 Kbit (8 KB) I2C serial SRAM with integrated EEPROM, offering a maximum access time of 550 ns and an 8-bit wide data bus in a compact 8-SOIC (3.9 × 4.9 mm) package. It combines volatile SRAM and non-volatile EEPROM in a single device, simplifying data logging and parameter storage in embedded designs.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- 47L64T-I/SN Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 64 Kbit (8 KB) combined SRAM + EEPROM architecture in a single device, eliminating the need for separate volatile and non-volatile memory chips
- I2C serial interface for simple 2-wire connectivity to any microcontroller, with a 550 ns maximum access time for fast read/write operations
- Compact 8-SOIC (3.9 × 4.9 mm) package minimizes board space while providing standard through-hole-compatible SMT footprint
- Dual-memory capability supports simultaneous high-speed SRAM buffering and persistent EEPROM parameter storage in a single address space
Applications
The 47L64T-I/SN is ideal for embedded systems requiring both fast volatile data buffering and non-volatile parameter retention, such as industrial sensor nodes, data loggers, and IoT edge devices. Its I2C interface allows easy connection to microcontrollers like PIC, AVR, or ARM Cortex-M devices with minimal pin usage. The combined SRAM and EEPROM functionality eliminates the need for two separate memory ICs, reducing BOM count and PCB area in space-constrained designs.
Specifications
| Manufacturer Package Code | SOIC-8 |
| YTEOL | 0 |
| Access Time-Max | 550ns |
| JESD-30 Code | R-PDSO-G8 |
| Memory Density | 65536bit |
| Memory IC Type | MEMORY CIRCUIT |
| Memory Width | 8 |
| Mixed Memory Type | EEPROM+SRAM |
| Number of Functions | 1 |
| Number of Ports | 1 |
| Number of Words | 8192words |
| Number of Words Code | 8000 |
| Operating Mode | SYNCHRONOUS |
| Organization | 8KX8 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.23 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Supply Voltage-Max (Vsup) | 3.6V |
| Supply Voltage-Min (Vsup) | 2.7V |
| Supply Voltage-Nom (Vsup) | 3.3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.32.00.51 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the memory capacity and interface of the 47L64T-I/SN?
The 47L64T-I/SN provides 64 Kbit (8 KB) of combined SRAM and EEPROM memory accessible over a 2-wire I2C serial interface. The device has an 8-bit data bus width and a maximum access time of 550 ns, making it suitable for embedded applications that require both fast temporary storage and non-volatile data retention in a single compact IC.
How does the combined SRAM and EEPROM in the 47L64T-I/SN benefit an embedded data logger design?
The 47L64T-I/SN integrates 64 Kbit of SRAM for fast temporary data buffering alongside EEPROM for persistent parameter and calibration storage. This eliminates the need for separate memory ICs in data logger designs, saving at least 1 PCB IC slot and reducing I2C bus address conflicts. The single-chip approach also simplifies firmware by providing a unified I2C address space for both memory types.
Which microcontroller families are compatible with the 47L64T-I/SN I2C interface?
The 47L64T-I/SN uses a standard I2C 2-wire interface, making it directly compatible with Microchip PIC, AVR, ARM Cortex-M (STM32, NXP LPC), and ESP32 microcontrollers that support I2C master mode. The 550 ns maximum access time is well within the timing budget of 100 kHz standard-mode and 400 kHz fast-mode I2C operation, requiring no special glue logic or level shifting when operating at the same supply voltage.
What package does the 47L64T-I/SN use and what does that mean for PCB assembly?
The 47L64T-I/SN comes in an 8-pin SOIC package measuring 3.9 × 4.9 mm (JESD-30 code R-PDSO-G8). This small-outline package is compatible with standard SMT reflow assembly using 1.27 mm pin pitch, which is large enough for easy rework and hand soldering while still keeping the board footprint compact for space-constrained embedded designs.
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