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Renesas R1EV58064BSCRBI#B2
- Part No.:
- R1EV58064BSCRBI#B2
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 28-SOIC (0.330", 8.40mm Width)
- Datasheet:
-
R1EV58064BSCRBI#B2.pdf
- Description:
- IC EEPROM 64KBIT PARALLEL 28SOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,065
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Product details
Overview
R1EV58064BSCRBI#B2 from Renesas Electronics is a 64 Kbit (8-Kword × 8-bit) parallel EEPROM with MONOS nonvolatile memory technology, 100 ns access time at 2.7–4.5 V, Ready/Busy signaling, and RES pin-based hardware write protection. It operates across –40°C to +85°C and supports automatic byte/page (64-byte) programming for embedded system configuration storage in industrial controllers.
For engineers reviewing the R1EV58064BSCRBI#B2 datasheet, R1EV58064BSCRBI#B2 pinout, R1EV58064BSCRBI#B2 application, or R1EV58064BSCRBI#B2 equivalent, key selection criteria include its SOP-28 package, 2.7–5.5 V single-supply operation, 10⁵ erase/write cycles, software data protection sequence, and RES-controlled power-on/off data integrity assurance.
Technical Context
This device implements a parallel interface with CE/OE/WE control logic, on-chip address/data latches, and a high-voltage generator for MONOS cell programming. Its RDY/Busy output and RES pin provide real-time status feedback and hardware-level write inhibition during power transitions.
The R1EV58064BSCRBI#B2 belongs to the R1EV58064BxxR series, distinguishing it from the N-series by inclusion of the RES function. It supports both WE-controlled and CE-controlled write modes, with automatic page write triggered after CE or WE remains high for ≥100 µs following data input.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory density | 64 Kbit (8,192 × 8-bit), sufficient for firmware parameter tables or calibration data in microcontroller-based systems |
| Access time | 100 ns max at 2.7–4.5 V; enables direct connection to legacy 8-bit microcontrollers without wait-state insertion |
| Supply voltage | 2.7–5.5 V single supply; interoperable with 3.3 V and 5 V logic families without level-shifting |
| Write endurance | 100,000 cycles minimum; supports frequent field-updatable configuration logging in industrial HMIs |
| Data retention | 10+ years at –40°C to +85°C; ensures long-term reliability in unattended equipment like remote sensors |
| Package | 400-mil 28-pin plastic SOP (PRSP0028DC-A); compatible with standard surface-mount assembly and reflow profiles |
| Write protection | Hardware RES pin + software data protection (AA/55/A0 unlock sequence); dual-layer safeguard against accidental writes |
Pinout & Package
Package: 400-mil 28-pin plastic SOP (PRSP0028DC-A / JEITA FP-28DV), lead-free, industrial temperature grade (–40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply | 2.7–5.5 V main supply; decoupling capacitor required within 10 mm for noise immunity during write cycles |
| VSS | Ground | Reference return path; must be low-impedance and separated from digital ground if sharing PCB with noisy peripherals |
| A0–A12 | Address inputs | 13-bit address bus; A6–A12 serve as page address bits latched on first falling edge of WE or CE during page write |
| I/O0–I/O7 | Data I/O | Bidirectional 8-bit data bus; supports data polling on I/O7 and toggle-bit detection on I/O6 during internal write |
| CE | Chip enable | Active-low chip select; controls device activation and latches address/data when used in CE-controlled write mode |
| OE | Output enable | Active-low read control; high-Z output when deasserted; timing-critical for tOE (≤50 ns) in fast-read applications |
| WE | Write enable | Active-low write strobe; latches address/data on falling edge; determines write mode (WE- or CE-controlled) |
| RDY/Busy | Status output | Open-drain signal pulled low during internal write; eliminates need for fixed delay timing in host firmware |
| RES | Reset input | Active-low hardware write inhibit; must be held low during VCC ramp-up/down to prevent spurious writes |
| NC | No connection | Pin 3 is unconnected; must remain floating-no external pull-up/down or routing |
Key Features
| Feature | Design Value |
|---|---|
| MONOS memory cell | Enables 10⁵ endurance and 10-year data retention without charge-pump degradation typical of floating-gate EEPROMs |
| 64-byte page write | Reduces average write latency by >90% vs. byte-write for sequential configuration updates (e.g., sensor calibration blocks) |
| Ready/Busy signaling | Allows host CPU to poll status asynchronously instead of using fixed 10 ms delays, improving system responsiveness |
| RES pin protection | Hardware lockout that overrides all control pins-critical for preventing corruption during brown-out or reset sequences |
| Software data protection | Three-byte unlock sequence (1555h/0AAAh/1555h → A0h) prevents accidental writes from firmware bugs or noise glitches |
Applications
| Industrial PLC Configuration Storage | Medical Device Calibration Data |
|---|---|
|
Use Scenario: Storing I/O mapping, PID tuning parameters, and alarm thresholds in programmable logic controllers deployed in factory automation cabinets. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed via parallel bus during boot and runtime parameter updates; RDY/Busy synchronizes host reads/writes. Use Value: RES pin ensures zero risk of parameter corruption during AC power cycling or emergency stop events, meeting IEC 61131-2 requirements. |
Use Scenario: Retaining per-unit sensor offset/gain coefficients and regulatory audit logs in portable diagnostic instruments with battery-backed operation. IC Role / Device Role / Timing Role: High-reliability data vault interfaced to an ARM Cortex-M4 MCU; software protection prevents unauthorized calibration changes. Use Value: 10-year data retention and 10⁵ write cycles support multi-year device service life without EEPROM replacement. |
| Automotive Body Control Module | Smart Energy Meter Firmware Settings |
|
Use Scenario: Holding seat/mirror position presets, lighting profiles, and door lock behavior in 12 V automotive body control units operating across extended temperature ranges. IC Role / Device Role / Timing Role: Parallel EEPROM directly mapped to MCU address space; RES tied to microcontroller reset line for guaranteed power-on protection. Use Value: –40°C to +85°C operation and noise-immune control pin filtering (15 ns glitch rejection) meet AEC-Q100 Class 2 stress requirements. |
Use Scenario: Storing tariff schedules, meter ID, and tamper-event timestamps in ANSI C12.20-compliant electricity meters with 20+ year field deployment. IC Role / Device Role / Timing Role: Secure configuration store accessed during meter initialization and firmware upgrade verification; page write minimizes flash wear on host MCU. Use Value: Dual protection (RES + software unlock) satisfies ANSI C12.10 security mandates for utility-grade metering data integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT28C64B-15PU | 150 ns access time; no RES pin; 5 V only (4.5–5.5 V); 10⁴ endurance | Lacks hardware reset protection and wide-voltage operation; suitable only for legacy 5 V-only designs | Select only if board already uses 5 V logic and does not require RES-based power sequencing safety |
| FM24CL64B | Serial I²C interface; 400 kHz max; no parallel bus; built-in error correction | Requires I²C controller and software driver; incompatible with existing parallel address/data bus layouts | Choose for space-constrained designs where pin count reduction outweighs loss of direct memory-mapped access |
Compared with AT28C64B-15PU and FM24CL64B, the R1EV58064BSCRBI#B2 provides faster 100 ns access, hardware RES protection absent in the Atmel part, and parallel bus compatibility missing in the Cypress FRAM-making it optimal for retrofitting legacy 8-bit MCU systems requiring enhanced reliability.
Availability
R1EV58064BSCRBI#B2 is available at Aetrix Electronics and suitable for industrial PLCs, medical calibration modules, automotive body controllers, and smart energy meters requiring stable component supply across extended temperature and long product lifecycles.
Supply support for R1EV58064BSCRBI#B2 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
Renesas Electronics Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and memory solutions for industrial, automotive, and infrastructure markets.
The R1EV58064BxxR series was designed specifically for robust, long-life nonvolatile storage in harsh environments-emphasizing hardware write protection, wide voltage operation, and MONOS-based endurance over conventional floating-gate EEPROMs.
FAQ
What is the function of the RES pin on the R1EV58064BSCRBI#B2?
The RES pin on the R1EV58064BSCRBI#B2 is an active-low hardware write inhibit that forces the device into an unprogrammable state when asserted. When RES is low, all read and write operations are blocked-even if CE, OE, and WE are valid-ensuring data integrity during power-on/off transients. The R1EV58064BSCRBI#B2 requires RES to be held low for the full VCC ramp period and then high for ≥10 ms before initiating writes.
Does the R1EV58064BSCRBI#B2 support both byte and page write operations?
Yes, the R1EV58064BSCRBI#B2 supports both automatic byte write (≤10 ms) and automatic 64-byte page write (≤10 ms). Page write is initiated by loading up to 64 bytes within 30 µs of each other, followed by holding CE or WE high for ≥100 µs. This reduces average programming time by >90% compared to sequential byte writes, making the R1EV58064BSCRBI#B2 ideal for updating configuration blocks.
How does the Ready/Busy signal work on the R1EV58064BSCRBI#B2?
The RDY/Busy pin on the R1EV58064BSCRBI#B2 is an open-drain output that pulls low at the start of any internal write cycle and returns to high-impedance upon completion. It allows the host system to avoid fixed delays by polling this signal instead of waiting the worst-case 10 ms. The R1EV58064BSCRBI#B2 guarantees completion within 10 ms, but RDY/Busy enables tighter timing control and improved system throughput.
What is the software data protection sequence for the R1EV58064BSCRBI#B2?
The R1EV58064BSCRBI#B2 uses a three-byte unlock sequence to enable writes: write 0xAA to address 0x5555, then 0x55 to address 0x2AAA, then 0xA0 to address 0x5555-followed immediately by the target address and data. To disable protection, a six-byte sequence (AA/55/80/AA/55/20) is required. This software lock complements the hardware RES pin, and the R1EV58064BSCRBI#B2 ships with protection disabled.
Is the R1EV58064BSCRBI#B2 compatible with 3.3 V microcontrollers?
Yes, the R1EV58064BSCRBI#B2 operates from 2.7 V to 5.5 V and is fully compatible with 3.3 V logic families. Its VIH threshold is 2.4 V (min) at VCC ≥ 3.6 V, and VOL is ≤0.4 V at IOL = 2.1 mA-ensuring reliable interfacing with 3.3 V MCUs without level shifters. The R1EV58064BSCRBI#B2 also meets JEDEC byte-wide standards for interoperability with legacy 8-bit processors.
R1EV58064BSCRBI#B2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- R1EV58064BxxR
- Package/Case:
- 28-SOIC (0.330", 8.40mm Width)
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 64Kbit
- Memory Organization:
- 8K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 10ms
- Access Time:
- 100 ns
- Voltage - Supply:
- 2.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-SOP
R1EV58064BSCRBI#B2 FAQ
1.How can I place an order for R1EV58064BSCRBI#B2 through Aetrix?
Please submit a Request for Quotation (RFQ) for R1EV58064BSCRBI#B2 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 R1EV58064BSCRBI#B2 reliable?
The price and inventory of R1EV58064BSCRBI#B2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R1EV58064BSCRBI#B2 is usually 5 days.
3.What payment methods are accepted for R1EV58064BSCRBI#B2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R1EV58064BSCRBI#B2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R1EV58064BSCRBI#B2?
R1EV58064BSCRBI#B2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R1EV58064BSCRBI#B2 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 R1EV58064BSCRBI#B2?
For technical support, including R1EV58064BSCRBI#B2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R1EV58064BSCRBI#B2 requirements.
6.How does Aetrix verify that R1EV58064BSCRBI#B2 is sourced from the original manufacturer or authorized distributors?
All R1EV58064BSCRBI#B2 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 R1EV58064BSCRBI#B2 meets industry standards.
7.What is the process for return or replacement of R1EV58064BSCRBI#B2?
All R1EV58064BSCRBI#B2 units undergo pre-shipment inspection (PSI). If there is an issue with R1EV58064BSCRBI#B2, 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 R1EV58064BSCRBI#B2 part is unused and in its original packaging.
Return procedure for R1EV58064BSCRBI#B2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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