CPU Supervisor with 4k SPI EEPROM
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Overview
Description
These devices combine four popular functions, Power-on Reset Control, Watchdog Timer, Supply Voltage Supervision, and Block Lock Protect Serial EEPROM Memory in one package. This combination lowers system cost, reduces board space requirements, and increases reliability. Applying power to the device activates the power-on reset circuit which holds RESET/RESET active for a period of time. This allows the power supply and oscillator to stabilize before the processor executes code. The Watchdog Timer provides an independent protection mechanism for microcontrollers. When the microcontroller fails to restart a timer within a selectable time out interval, the device activates the RESET/RESET signal. The user selects the interval from three preset values. Once selected, the interval does not change, even after cycling the power. The Device's low VCC detection circuitry protects the user's system from low voltage conditions, resetting the system when VCC falls below the minimum VCC trip point. RESET/RESET is asserted until VCC returns to proper operating level and stabilizes. Four industry standard VTRIP thresholds are available, however, Intersil's unique circuits allow the threshold to be reprogrammed to meet custom requirements or to fine-tune the threshold for applications requiring higher precision. The memory portion of the device is a CMOS Serial EEPROM array with Intersil's block lock protection. The array is internally organized as 512 x 8. The device features a Serial Peripheral Interface (SPI) and software protocol allowing operation on a simple four-wire bus. The device utilizes Intersil's proprietary Direct Write™ cell, providing a minimum endurance of 100, 000 cycles and a minimum data retention of 100 years.
Features
- Low VCC Detection and Reset Assertion
- Four standard reset threshold voltages 4.63V, 4.38V, 2.93V, 2.63V
- Re-program low VCC reset threshold voltage using special programming sequence.
- Reset signal valid to VCC = 1V
- Selectable Time Out Watchdog Timer
- Long Battery Life with Low Power Consumption
- <50µA max standby current, watchdog on
- <10µA max standby current, watchdog off
- 4Kbits of EEPROM-1M Write Cycle Endurance
- Save Critical Data with Block Lock™ Memory
- Protect 1/4, 1/2, all or none of EEPROM array
- Built-in Inadvertent Write Protection
- Write enable latch
- Write protect pin
- SPI Interface - 3.3MHz Clock Rate
- Minimize Programming Time
- 16-byte page write mode
- 5ms write cycle time (typical)
- Available Packages
- 8 Ld MSOP, 8 Ld SOIC, 8 Ld PDIP
- 14 Ld TSSOP
- Pb-Free Plus Anneal Available (RoHS Compliant)
Comparison
Applications
Applications
- Communications Equipment Routers, Hubs, Switches Set Top Boxes
- Industrial Systems Process Control Intelligent Instrumentation
- Computer Systems Desktop Computers Network Servers
- Battery Powered Equipment
Documentation
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|---|---|---|
| Type | Title | Date |
| Datasheet | PDF 839 KB | |
| Brochure | PDF 5.51 MB 日本語 | |
| End Of Life Notice | PDF 603 KB | |
| End Of Life Notice | PDF 1.17 MB | |
| Price Increase Notice | PDF 208 KB | |
| Product Advisory | PDF 363 KB | |
| Product Change Notice | PDF 237 KB | |
| Product Change Notice | PDF 204 KB | |
| Product Change Notice | PDF 152 KB | |
| Application Note | PDF 427 KB | |
| Application Note | PDF 265 KB | |
| Application Note | PDF 509 KB | |
| Application Note | PDF 397 KB | |
13 items
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Design & Development
Software & Tools
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Processing table
Pkg. Type |
Carrier Type |
MOQ |
Buy / Sample |
|
|---|---|---|---|---|
| Part Number | ||||
X5045S8IZ-2.7 Active Samples Available |
SOICN | Tube | 800 | Get Samples, |
X5045S8IZ-2.7T1 Active Samples Available |
SOICN | Reel | 2500 | Get Samples, |
X5045S8IZ-4.5AT1 Active Samples Available |
SOICN | Reel | 2500 | Get Samples, |
| SOICN | Reel | 2500 | Get Samples, | |
| SOICN | Reel | 2500 | Get Samples, |
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- Cart icon to the right of the chip icon: Indicates that samples are available for this product
Support
Renesas Samples
Select an orderable part number:
| Orderable Part ID | Sample |
|---|---|
| X5045S8IZ-2.7 | Availability |
| X5045S8IZ-2.7T1 | Availability |
| X5045S8IZ-4.5AT1 | Availability |
| X5045S8IZT1 | Availability |
| X5045S8ZT1 | Availability |