مدار مجتمع (آی سی) آی‌سی حافظه تراشهٔ حافظه

Product Attributes

Introduction

• 16 bytes Page Write within 3 ms Schmitt Trigger, Filtered Inputs for Noise Suppression Single supply voltage:
  • 1.7 V to 3.6 V High-reliability Endurance: 1 Million Write Cycles Data Retention: 100 Years Enhanced ESD/latch-up protection HBM 6000V The BL34C04A is a 512-byte EEPROM device designed to operate the SMBus bus in the 1.7 V - 3.6 V voltage range, with a maximum of 1 MHz. The BL34C04A includes a 4-Kbit serial EEPROM organized as two banks of 256 bytes each, or 512 bytes of total memory. Each bank is composed of two 128-byte blocks. The device is able to selectively lock the data in any or all of the four 128-byte blocks. Designed specifically for use in DRAM DIMMs (Dual Inline Memory Modules) with Serial Presence Detect, all the information concerning the DRAM module configuration (such as its access speed, its size, its organization) can be kept write-protected in one or more memory blocks. Individually locking a 128-byte block may be accomplished using a software write protection mechanism in conjunction with a high input voltage VHV on input A0. By sending the device a specific SMBus sequence, each block may be protected from writes until the write protection is electrically reversed using a separate SMBus sequence which also requires VHV on input A0. The write protection for all four blocks is cleared simultaneously

Features

• 512-byte Serial Presence Detect EEPROM
• compatible with JEDEC EE1004 specification
• Compatible with SMBus serial interface:
  • up to 1 MHz transfer rate
• Memory array:
  • 4 Kbits organized as two banks of 256 bytes each
  • Each page is composed of two 128-byte blocks
• Software data protection for each 128-byte block
• Hardware write protection
• Write:
  • Byte Write within 3 ms