Details

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BUY STMICROELECTRONICS 93C66WP https://www.utsource.net/itm/p/12598490.html

Parameter	Description	Value/Range
Device Name	EEPROM Serial Memory	STM93C66WP
Package Type	Package type	SO8, TSSOP8
Operating Voltage (VCC)	Supply voltage range	2.5V to 5.5V
Memory Capacity	Total memory capacity	2K bits (256 x 8)
Organization	Memory organization	256 x 8
Data Retention Time	Data retention time at max junction temperature	100 years
Programming Cycle Endurance	Number of write/erase cycles supported	1,000,000
Operating Temperature Range	Temperature range for operation	-40掳C to +85掳C
Interface	Communication interface	SPI
Write Time	Maximum time required to write data	5ms
Standby Current	Current consumption in standby mode	1渭A (typical)
Active Current	Current consumption during active operation	5mA (typical)

Instructions

1. Power Supply Requirements

   • Ensure the supply voltage is within the specified range of 2.5V to 5.5V.

2. Initialization

   • Before performing any read or write operations, initialize the SPI interface according to the datasheet specifications.

3. Writing Data

   • To write data, first send a Write Enable command (WREN).
   • Follow with the Write command (WRITE) and the address/data bytes.
   • Wait for the write cycle to complete, which can take up to 5ms.

4. Reading Data

   • Send a Read command (READ) followed by the address from where data is to be read.
   • The data will be shifted out on the MOSI line after the address has been sent.

5. Protecting Data Integrity

   • Use the Write Protect pin (WP#) to prevent accidental writes when necessary.

6. Handling Multiple Devices

   • If multiple devices are connected on the same SPI bus, ensure proper selection using the Chip Select (CS#) pin.

7. Endurance and Data Retention

   • Be mindful of the maximum number of write/erase cycles (1,000,000) and data retention period (100 years).

8. Temperature Considerations

   • Ensure that the device operates within the temperature range of -40掳C to +85掳C to maintain reliable performance.

For detailed timing diagrams and specific command sequences, refer to the official datasheet provided by STMicroelectronics.

(For reference only)