The N01S818HAT22I is a 1MB ultra low power serial SRAM in 8 pin TSSOP package. This serial SRAM includes several integrated memory devices including 1MB serially accessed static random access memory and internally organized as 128Kwords by 8 bits. It is designed and fabricated using ON Semiconductor"s advanced CMOS technology to provide both high speed performance and low power. The device operates with a single chip select (active-low CS) input and use a simple SPI protocol. In SPI mode, a single data-in (SI) and data-out (SO) line is used along with clock (SCK) to access data within the device. In DUAL mode, two multiplexed data-in/data-out (SIO0-SIO1) lines are used and in QUAD mode, four multiplexed data-in/data-out (SIO0-SIO3) lines are used with the clock to access the memory. The serial SRAM is designed to interface directly with a standard SPI common on many standard microcontrollers in default state.
Standard SPI interface and multiplex DUAL and QUAD interface
Power supply range from 1.7V to 2.2V, data retention voltage of 1V and standby current of 1µA
Very low typical standby current of less than 1µA and very low operating current of less than 10mA
Simple serial interface, single bit SPI access & dual bit and quad-bit SPI like access
