N25S818HA Series

Serial SRAM Memory, 256-kb, 1.8 V

Catalog

Serial SRAM Memory, 256-kb, 1.8 V

Part	Technology	Memory Interface	Clock Frequency	Memory Size	Package / Case	Package / Case [y]	Package / Case [x]	Memory Format	Supplier Device Package	Memory Organization	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Supply [Max]	Voltage - Supply [Min]	Memory Type	Package / Case [custom]	Package / Case [custom]
ON Semiconductor N25S818HAS21I	SRAM	SPI	16 MHz	32 KB	8-SOIC	3.9 mm	0.154 in	SRAM	8-SOIC	32K x 8	Surface Mount	85 °C	-40 °C	1.95 V	1.7 V	Volatile
ON Semiconductor N25S818HAT21IT	SRAM	SPI	16 MHz	32 KB	8-TSSOP			SRAM	8-TSSOP	32K x 8	Surface Mount	85 °C	-40 °C	1.95 V	1.7 V	Volatile	0.173 "	4.4 mm
ON Semiconductor N25S818HAT21I	SRAM	SPI	16 MHz	32 KB	8-TSSOP			SRAM	8-TSSOP	32K x 8	Surface Mount	85 °C	-40 °C	1.95 V	1.7 V	Volatile	0.173 "	4.4 mm

Catalog

Serial SRAM Memory, 256-kb, 1.8 V

Key Features

• 1.7 to 1.95 V power supply range

• Very low standby current - typical Isb as low as 200 nA

• Very low operating current - as low as 3 mA

• Simple memory control: single chip select (CS), serial input (SI) and serial output (SO)

• Flexible operating modes: word read and write, page mode (32 word page), and burst mode (full array)

• 32 K x 8 bit organization

• Self timed write cycles

• Built-in write protection (CS high)

• HOLD pin for pausing communication

Description

The ON Semiconductor serial SRAM family includes several integrated memory devices including this 256 kb serially accessed Static Random Access Memory, internally organized as 32 k words by 8 bits. The devices are designed and fabricated using advanced CMOS technology to provide both high-speed performance and low power. The devices operate with a single chip select (CS) input and use a simple Serial Peripheral Interface (SPI) serial bus. A single data in and data out line is used along with a clock to access data within the devices. The N25S818HA devices include a HOLD pin that allows communication to the device to be paused. While paused, input transitions will be ignored. The devices can operate over a wide temperature range of -40°C to +85°C and can be available in several standard package offerings.