DS1200 Serial RAM Chip
■The DS1200 serial RAM chip is a miniature read/write memory that can randomly access individual 8-bit strings (bytes) or sequentially access the entire 1024-bit contents (burst). Interface cost to a microprocessor is minimized by on-chip circuitry, which permits data transfers with only three signals: CLK, RST, and DQ.
■Nonvolatility can be achieved by connecting a battery of 2V to 4V at the battery input V-BAT. A load of 0.5µA should be used to size the external battery for the required data retention time. If nonvolatility is not required the VBAT pin should be grounded.
●FEATURES
■1024 Bits of Read/Write Memory
■Low Data Retention Current for Battery Backup Applications
■Four Million Bits/Second Data Rate
■Single-Byte or Multiple-Byte Data Transfer Capability
■No Restrictions on the Number of Write Cycles
■Low-Power CMOS Circuitry
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