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Microchip Technology 47C16-E/P
- Part No.:
- 47C16-E/P
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
47C16-E/P.pdf
- Description:
- IC EERAM 16KBIT I2C 1MHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:240
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Product details
Overview
47C16-E/P from Microchip Technology is a 16 Kbit (2,048 × 8) I²C serial EERAM combining volatile SRAM with nonvolatile EEPROM backup. It operates at 4.5V–5.5V, supports up to 1 MHz I²C, and delivers automatic power-loss data retention via external VCAP capacitor. Its hardware Store pin (HS), software-controlled Store/Recall, and configurable write protection make it suitable for industrial control logging and automotive event recorders.
For engineers reviewing the 47C16-E/P datasheet, 47C16-E/P pinout, 47C16-E/P application, or 47C16-E/P equivalent, key selection criteria include VCC range (4.5–5.5 V), Auto-Store trip voltage (4.0–4.4 V), 25 ms max Store time, 5 ms max Recall time, and 8-lead PDIP package compatibility with legacy through-hole designs.
Technical Context
The 47C16-E/P integrates a 2,048 × 8-bit SRAM array and matching EEPROM array, linked by dedicated Store/Recall logic. Data transfer occurs over standard two-wire I²C with Schmitt-trigger inputs, supporting cascading up to four devices using A1/A2 address pins.
Its dual-mode nonvolatility relies on either automatic Store triggered by VCC falling below 4.0–4.4 V (with external CVCAP = 5–6.8 µF), or manual Store initiated via HS pin pulse (≥150 ns) or software command (0x55 + 0x33). The STATUS register (address 0x00) controls ASE (Auto-Store Enable), BP bits (software write protection), and AM (Array Modified) flag.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Density | 16 Kbit (2,048 × 8 bits) SRAM with mirrored EEPROM backup |
| VCC Range | 4.5 V to 5.5 V - compatible with 5 V logic systems and industrial 5 V rails |
| I²C Speed | Up to 1 MHz - enables fast configuration and bulk data transfers in real-time systems |
| Store Time | ≤25 ms - ensures full SRAM-to-EEPROM save before power collapse in brownout scenarios |
| Recall Time | ≤5 ms - restores valid data to SRAM within milliseconds of power-up for immediate operation |
| Data Retention | >200 years - guarantees long-term EEPROM data integrity without refresh cycles |
| Endurance | 1 million EEPROM store cycles - supports frequent logging in telemetry or diagnostic applications |
Pinout & Package
47C16-E/P is supplied in an 8-lead PDIP (Plastic Dual In-line Package) with 0.3-inch body width, designed for through-hole mounting and legacy PCB compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VCAP | Auto-Store capacitor connection | Accepts 5–6.8 µF external capacitor to sustain SRAM-to-EEPROM transfer during VCC drop |
| 2 - A1 | Chip select input | Configures LSB of 3-bit device address (with A2 and fixed '0') for multi-device I²C bus addressing |
| 3 - A2 | Chip select input | Configures MSB of 3-bit device address - enables up to 8 unique addresses per bus segment |
| 4 - VSS | Ground reference | System ground return path; must be low-impedance to support noise-immune Schmitt-trigger inputs |
| 5 - VCC | Power supply | 4.5–5.5 V DC input; powers both SRAM and EEPROM logic; trip threshold 4.0–4.4 V triggers Auto-Store |
| 6 - HS | Hardware Store trigger | Pulse ≥150 ns high initiates immediate SRAM-to-EEPROM Store, independent of AM/ASE status |
| 7 - SCL | I²C clock input | Drives synchronous communication; Schmitt-triggered for robustness against slow-rising or noisy clocks |
| 8 - SDA | I²C bidirectional data line | Open-drain interface with internal pull-up; supports multi-master arbitration and ACK/NACK signaling |
Key Features
| Feature | Design Value |
|---|---|
| Automatic Store/Recall | Zero-software intervention: SRAM → EEPROM on power-down; EEPROM → SRAM on power-up when VCAP is present |
| Hardware Store Pin (HS) | Enables deterministic, sub-millisecond initiation of Store operation - critical for crash-data capture in automotive ECUs |
| Software Write Protection | Configurable block protection (1/64 to full array) via STATUS register BP bits - prevents accidental firmware overwrite |
| Nonvolatile Event Flag | EVENT bit in STATUS register latches external HS pin transitions - provides tamper/event audit trail without host polling |
| I²C Cascading Support | Up to four 47C16-E/P devices share one I²C bus using A1/A2 address pins - reduces GPIO count in multi-sensor nodes |
Applications
| Industrial Data Logger | Automotive Event Recorder |
|---|---|
|
Use Scenario: Continuous sensor sampling in PLC edge controllers with intermittent power or scheduled shutdowns. IC Role / Device Role / Timing Role: Nonvolatile SRAM buffer that preserves last-known operational state and fault logs across power cycles. Use Value: Eliminates need for external backup battery or supercapacitor circuitry while guaranteeing >200-year data retention in EEPROM. |
Use Scenario: Crash-data recording in ADAS domain controllers where power may fail during collision events. IC Role / Device Role / Timing Role: High-reliability memory with hardware-triggered Store (HS pin) ensuring sub-25 ms SRAM-to-EEPROM commit before voltage collapse. Use Value: Meets automotive AEC-Q100 Grade 1 requirements and provides deterministic, capacitor-backed data capture without MCU intervention. |
| Smart Meter Firmware Cache | Medical Device Configuration Store |
|
Use Scenario: Storing calibration coefficients and tariff tables in utility meters subject to frequent firmware updates and grid outages. IC Role / Device Role / Timing Role: I²C-accessible memory with software write protection (BP bits) preventing corruption during OTA updates. Use Value: Enables secure, field-upgradable parameter storage with 1M endurance cycles - exceeds 10-year meter lifetime requirements. |
Use Scenario: Preserving user-configured therapy parameters and usage history in portable infusion pumps. IC Role / Device Role / Timing Role: Medical-grade nonvolatile memory with automatic Recall on power-up to restore safe default settings instantly. Use Value: Supports IEC 62304 Class B software safety requirements via guaranteed data integrity and zero-failure recall timing (≤5 ms). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nonvolatile SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| FM24V10-G | 1 Mbit F-RAM (not SRAM+EEPROM); 2.7–3.6 V only; no VCAP dependency; unlimited endurance | Better for high-write-cycle logging; incompatible with 5 V systems or capacitor-based Auto-Store workflows | Select if system uses 3.3 V rail and requires >10¹² write cycles - not a drop-in replacement for 47C16-E/P |
| AT24C128C-PU | 128 Kbit I²C EEPROM only; no SRAM layer; no Auto-Store/Recall; 5 V tolerant; 1 MHz capable | Suitable for static configuration storage; lacks real-time SRAM buffering and instantaneous recall capability | Choose when only persistent storage is needed and latency-critical boot-time data restoration is unnecessary |
Compared with FM24V10-G and AT24C128C-PU, the 47C16-E/P uniquely combines 5 V-compatible SRAM speed with capacitor-assisted nonvolatility - enabling deterministic, single-chip power-loss resilience without external controllers or voltage translation.
Availability
47C16-E/P is available at Aetrix Electronics and suitable for industrial data loggers, automotive event recorders, smart meter firmware caches, and medical device configuration stores requiring stable component supply across extended temperature ranges (–40°C to +125°C).
Supply support for 47C16-E/P 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 global semiconductor company specializing in microcontrollers, analog devices, and memory solutions for industrial, automotive, and communications markets.
The 47C16-E/P belongs to Microchip's EERAM product line, engineered to replace battery-backed SRAM and simplify nonvolatile data logging in resource-constrained embedded systems.
FAQ
What is the function of the VCAP pin on the 47C16-E/P?
The VCAP pin on the 47C16-E/P connects to an external 5–6.8 µF capacitor that supplies hold-up energy during VCC collapse. When VCC drops below 4.0–4.4 V, the 47C16-E/P uses charge stored on this capacitor to complete an automatic SRAM-to-EEPROM Store operation within ≤25 ms - preserving data without battery or supercapacitor circuitry.
Does the 47C16-E/P require external pull-up resistors on SDA and SCL lines?
Yes, the 47C16-E/P requires external pull-up resistors on both SDA and SCL lines because its I²C interface uses open-drain outputs. Typical values range from 2.2 kΩ to 10 kΩ depending on bus capacitance and desired rise time; the device's Schmitt-trigger inputs ensure reliable operation even with slower edges.
How does the Hardware Store (HS) pin differ from Software Store on the 47C16-E/P?
The HS pin on the 47C16-E/P initiates an immediate Store operation upon detection of a ≥150 ns high pulse, independent of the AM or ASE bits - making it ideal for crash-triggered logging. Software Store requires issuing command 0x55 followed by 0x33 over I²C and is subject to bus arbitration and timing constraints.
Can the 47C16-E/P operate without the VCAP capacitor?
Yes, the 47C16-E/P can operate without the VCAP capacitor if Auto-Store is disabled (ASE = 0) and VCAP is tied to VCC. In this mode, Store operations rely solely on the HS pin or software commands. However, automatic power-loss protection is lost, and the device cannot guarantee data retention during unexpected power failure.
What temperature grades are supported by the 47C16-E/P part number suffix?
Per the Device Selection Table, the "E" suffix in 47C16-E/P denotes Extended temperature grade (–40°C to +125°C), qualified to AEC-Q100 standards. This makes the 47C16-E/P suitable for under-hood automotive applications and high-ambient industrial environments where standard Industrial (–40°C to +85°C) grade would be insufficient.
47C16-E/P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EERAM
- Technology:
- EEPROM, SRAM
- Memory Size:
- 16Kbit
- Memory Organization:
- 2K x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 1 MHz
- Write Cycle Time - Word, Page:
- 1ms
- Access Time:
- 400 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
47C16-E/P FAQ
1.How can I place an order for 47C16-E/P through Aetrix?
Please submit a Request for Quotation (RFQ) for 47C16-E/P 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 47C16-E/P reliable?
The price and inventory of 47C16-E/P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 47C16-E/P is usually 5 days.
3.What payment methods are accepted for 47C16-E/P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 47C16-E/P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 47C16-E/P?
47C16-E/P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 47C16-E/P 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 47C16-E/P?
For technical support, including 47C16-E/P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 47C16-E/P requirements.
6.How does Aetrix verify that 47C16-E/P is sourced from the original manufacturer or authorized distributors?
All 47C16-E/P 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 47C16-E/P meets industry standards.
7.What is the process for return or replacement of 47C16-E/P?
All 47C16-E/P units undergo pre-shipment inspection (PSI). If there is an issue with 47C16-E/P, 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 47C16-E/P part is unused and in its original packaging.
Return procedure for 47C16-E/P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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