My Inquiry
My Account
Renesas R1EX24512BSAS0A#S0
- Part No.:
- R1EX24512BSAS0A#S0
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
R1EX24512BSAS0A#S0.pdf
- Description:
- IC EEPROM 512KBIT I2C 1MHZ 8SOP
- Quantity:
- Payment:
- Shipping:
Inventory:40,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
R1EX24512BSAS0A#S0 from Renesas Electronics is a 512-kbit (64-kword × 8-bit) two-wire serial interface EEPROM with I²C bus compatibility, 1.8 V to 5.5 V single-supply operation, and 128-byte page write capability. It delivers 5 ms write cycle time, 1,000k endurance cycles at 25°C, and 100-year data retention-enabling nonvolatile configuration storage in industrial control modules.
For engineers reviewing the R1EX24512BSAS0A#S0 datasheet, R1EX24512BSAS0A#S0 pinout, R1EX24512BSAS0A#S0 application, or R1EX24512BSAS0A#S0 equivalent, key selection criteria include its −40°C to +85°C industrial temperature range, SOP-8 package with NC pin, WP-controlled full-array write protection, and dual-speed I²C support (400 kHz at 1.8 V, 1 MHz at 2.5–5.5 V).
Technical Context
This device implements a two-wire I²C-compatible serial interface with fixed "1010" device code, 3-bit hardware addressable device selection via A0/A1 pins, and open-drain SDA/SCL signaling requiring external pull-ups. Its internal architecture includes a high-voltage generator for MNOS memory programming and an address generator supporting 16-bit memory addressing across 65,536 bytes.
Write operations are controlled by the WP pin state: WP = low enables full-array byte/page writes; WP = high disables all writes and forces NO ACK on data input. Acknowledge polling is supported to detect internal write cycle completion without fixed timing delays.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 512 kbit (65,536 × 8-bit), sufficient for firmware parameter tables or calibration data in embedded controllers |
| Supply voltage | 1.8 V to 5.5 V - supports direct interfacing with 1.8 V, 2.5 V, 3.3 V, and 5 V microcontrollers without level shifters |
| I²C clock frequency | Up to 1 MHz (2.5–5.5 V) or 400 kHz (1.8–5.5 V) - enables fast configuration loading while maintaining robustness at low voltage |
| Page write size | 128 bytes per write cycle - reduces firmware update time versus byte-write-only EEPROMs |
| Write cycle time | 5 ms maximum - defines minimum interval between write commands; critical for real-time logging systems |
| Endurance | 1,000,000 cycles at 25°C - supports frequent recalibration or event logging in industrial HMI applications |
| Data retention | 100 years at 25°C - ensures long-term reliability for unattended equipment with infrequent power cycles |
Pinout & Package
Package: 150-mil 8-pin plastic SOP (PRSP0008DF-B / FP-8DBV), lead-free, surface-mount compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0, A1 | Hardware device address inputs | Set 2-bit portion of 3-bit I²C slave address; tied to VCC/VSS to select one of four devices on shared bus |
| NC | No connection | Pin 3 is unconnected - must be left floating or grounded; not used for addressing or control |
| VSS | Ground reference | Return path for all internal circuitry and I/O; requires low-impedance PCB connection to minimize noise coupling |
| VCC | Power supply | Single 1.8–5.5 V supply powers logic, memory array, and charge pump; bypass capacitor mandatory |
| WP | Write protect control | High = full-array write disable with NO ACK response; low = normal read/write operation |
| SCL | Serial clock input | Open-drain input synchronized to master clock; max 1 MHz rate determines throughput ceiling |
| SDA | Serial data I/O | Open-drain bidirectional bus line; requires external pull-up resistor sized for VOL, IOL, and bus capacitance |
Key Features
| Feature | Design Value |
|---|---|
| 128-byte page write | Reduces firmware update time by up to 128× versus sequential byte writes; minimizes host CPU overhead |
| Write protect (WP) pin | Hardware-enforced full-memory lockout - prevents accidental overwrites during power transitions or firmware faults |
| Acknowledge polling | Enables deterministic detection of write completion without fixed 5 ms delays - improves system responsiveness |
| Low-power standby | 2 µA max current draw - suitable for battery-backed systems where EEPROM must remain powered indefinitely |
| Industrial temperature range | −40°C to +85°C operation - validated for use in motor drives, PLC I/O modules, and outdoor metering equipment |
Applications
| Industrial Sensor Calibration | PLC Configuration Storage |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain coefficients for analog sensor front-ends in environmental monitoring nodes. IC Role / Device Role / Timing Role: Nonvolatile parameter register accessed during power-on initialization via I²C; no timing-critical access required. Use Value: Eliminates need for external calibration trimmers; enables field recalibration with verified 100-year data retention. | Use Scenario: Holding user-defined I/O mapping, scan rates, and alarm thresholds in modular programmable logic controllers. IC Role / Device Role / Timing Role: Configuration memory updated infrequently but read at every scan cycle; WP pin prevents corruption during brown-out events. Use Value: Supports hot-swappable I/O modules with persistent settings; 1,000k endurance accommodates decades of commissioning changes. |
| Medical Device Settings | Smart Energy Meter Firmware |
Use Scenario: Retaining user-prescribed therapy parameters and usage logs in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure settings store with WP-enabled lockdown during clinical operation; accessed only during setup mode. Use Value: Meets IEC 62304 Class B software requirements for nonvolatile data integrity; 1.8 V operation enables direct MCU interface. | Use Scenario: Storing tariff schedules, tamper-event timestamps, and cryptographic keys in ANSI C12.22-compliant meters. IC Role / Device Role / Timing Role: Tamper-resistant configuration vault; WP pin physically tied to enclosure switch for audit-trail locking. Use Value: Provides 512 kbit capacity for multi-tariff profiles and secure boot keys; lead-free SOP-8 simplifies RoHS-compliant assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C512B-PU | Same 512 kbit density and SOP-8 package, but rated for 1 MHz only at 2.5–5.5 V; no 400 kHz guarantee below 2.5 V | Lacks guaranteed low-voltage I²C timing - unsuitable for 1.8 V microcontroller interfaces requiring 400 kHz operation | Select R1EX24512BSAS0A#S0 when 1.8 V system-level I²C timing compliance is mandatory |
| M95512-WMN6TP | 512 kbit SPI interface instead of I²C; 10 MHz max clock vs. 1 MHz I²C; different pinout and protocol stack | Requires SPI-capable host and firmware rewrite; no WP pin - uses software write protection only | Choose R1EX24512BSAS0A#S0 for existing I²C infrastructure and hardware-based write security |
Compared with AT24C512B-PU and M95512-WMN6TP, R1EX24512BSAS0A#S0 uniquely guarantees 400 kHz I²C operation down to 1.8 V and provides dedicated hardware write protection - critical for mixed-voltage industrial designs where bus timing margins and fault resilience are non-negotiable.
Availability
R1EX24512BSAS0A#S0 is available at Aetrix Electronics and suitable for industrial sensor calibration, PLC configuration storage, medical device settings, and smart energy meter firmware requiring stable component supply across extended product lifecycles.
Supply support for R1EX24512BSAS0A#S0 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 enterprise applications.
The R1EX24xxx series was designed specifically for reliable, low-voltage I²C EEPROM applications in harsh industrial environments - emphasizing extended data retention, wide temperature operation, and hardware write security.
FAQ
What is the maximum I²C clock frequency supported by R1EX24512BSAS0A#S0 at 1.8 V?
R1EX24512BSAS0A#S0 supports up to 400 kHz I²C clock frequency across its full 1.8 V to 5.5 V supply range. At 2.5 V to 5.5 V, it operates up to 1 MHz. This dual-speed capability ensures interoperability with both legacy 1.8 V microcontrollers and higher-performance 3.3 V/5 V hosts without protocol translation.
Does R1EX24512BSAS0A#S0 have a dedicated write protect pin, and how does it function?
Yes, R1EX24512BSAS0A#S0 includes a dedicated WP (Write Protect) pin. When WP is high, all write operations are disabled and the device responds with NO ACK (acknowledge "1") to any write attempt. When WP is low, full read/write functionality is enabled. This hardware-level protection prevents accidental overwrites during power transitions or firmware errors.
What is the memory organization of R1EX24512BSAS0A#S0, and how is addressing implemented?
R1EX24512BSAS0A#S0 contains 512 kbit organized as 65,536 words × 8 bits. Addressing uses a 16-bit memory pointer: the first two received address bytes define the upper/lower byte of the 16-bit address. The device supports current-address, random, and sequential read modes, with automatic address rollover at page or memory boundaries.
Can R1EX24512BSAS0A#S0 be used in battery-powered applications with strict current budgets?
Yes, R1EX24512BSAS0A#S0 draws only 2 µA maximum in standby mode and 1 mA max during active read operations. Its 1.8 V minimum supply allows direct integration with coin-cell or energy-harvesting power sources. Combined with page-write efficiency, this makes R1EX24512BSAS0A#S0 well-suited for wireless sensor nodes and portable diagnostics requiring multi-year battery life.
Is R1EX24512BSAS0A#S0 compliant with RoHS and lead-free assembly requirements?
Yes, R1EX24512BSAS0A#S0 is a lead-free product packaged in a RoHS-compliant SOP-8 (PRSP0008DF-B) package. Renesas specifies full compliance with EU RoHS Directive requirements, and the device is qualified for standard Pb-free reflow soldering profiles - enabling seamless integration into environmentally regulated manufacturing lines.
R1EX24512BSAS0A#S0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 512Kbit
- Memory Organization:
- 64K x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 1 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 550 ns
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOP
R1EX24512BSAS0A#S0 FAQ
1.How can I place an order for R1EX24512BSAS0A#S0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R1EX24512BSAS0A#S0 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 R1EX24512BSAS0A#S0 reliable?
The price and inventory of R1EX24512BSAS0A#S0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R1EX24512BSAS0A#S0 is usually 5 days.
3.What payment methods are accepted for R1EX24512BSAS0A#S0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R1EX24512BSAS0A#S0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R1EX24512BSAS0A#S0?
R1EX24512BSAS0A#S0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R1EX24512BSAS0A#S0 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 R1EX24512BSAS0A#S0?
For technical support, including R1EX24512BSAS0A#S0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R1EX24512BSAS0A#S0 requirements.
6.How does Aetrix verify that R1EX24512BSAS0A#S0 is sourced from the original manufacturer or authorized distributors?
All R1EX24512BSAS0A#S0 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 R1EX24512BSAS0A#S0 meets industry standards.
7.What is the process for return or replacement of R1EX24512BSAS0A#S0?
All R1EX24512BSAS0A#S0 units undergo pre-shipment inspection (PSI). If there is an issue with R1EX24512BSAS0A#S0, 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 R1EX24512BSAS0A#S0 part is unused and in its original packaging.
Return procedure for R1EX24512BSAS0A#S0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R1EX24512BSAS0A#S0 Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
