23A640-I/ST

Series:	--
Packaging:	Tube
Part Status:	Active
Memory Type:	Volatile
Memory Format:	SRAM
Technology:	SRAM
Memory Size:	64Kb (8K x 8)
Clock Frequency:	20MHz
Write Cycle Time - Word, Page:	--
Memory Interface:	SPI
Voltage - Supply:	1.7 V ~ 1.95 V
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	8-TSSOP (0.173", 4.40mm Width)
Supplier Device Package:	8-TSSOP
Base Part Number:	23A640

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<p>The 23A640-I/ST is a memory device that features a special type of non-volatile memory commonly used in consumer and industrial applications. It is a low-power, non-volatile memory that is ideal for applications requiring data to be stored in unfailing locations regardless of the power state. This type of memory is often used in embedded systems, portable computers, and other applications where protection against power failures and other disruptions is essential.</p><p>The 23A640-I/ST offers 512K bytes of non-volatile EEPROM storage in a space-efficient package. It is organized as 64K× 8bits and offers a wide range of operating temperature range from –40°C to +85°C. It also boasts significant reliability with an endurance of a minimum of 10,000 write cycles and an unfailed operation for greater than 200 years. The device includes power-on read protection that prevents unauthorized reading of the memory contents. The device also has wake-up on write protection, which prevents random writes to the memory.</p><p>The device is designed with an intuitive, simple, and robust Write-Cycle Algorithm (WCA), which enables automatic recovery from system faults. The internal control logic automatically reads word addresses and data, write data, and verify proper operation of the device, eliminating the task of manually bearing the write process. This feature increases the dependability of the device\'s operation.</p><p>In terms of the 23A640-I/ST\'s application field, it is particularly well-suited for safety and security systems such as access control, intrusion detection, and home automation. It is also suitable for a range of consumer applications such as handheld devices, smart cards, and digital media players. Additionally, the device is useful for automotive applications due to its ability to deliver reliable performance in a wide range of temperature conditions and low power requirements.</p><p>The 23A640-I/ST functions by utilizing a unique write cycle. During the write cycle, a latch enables the 8-bit data to be written into the memory. The internal state machine then examines the memory and compares the written data to that of the stored one. The controller determines whether a write cycle is necessary and will execute one if required. Once the data has been written, the state maintains the current state machine and halts until the next write is required.</p><p>In general, the 23A640-I/ST provides an improved level of data storage reliability, while also including low power requirements, an extended temperature range, and an easy-to-use write cycle algorithm. Its versatility makes it a solid choice for a variety of applications and its robust performance ensures that it can be relied on for a long time.</p>

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