Details

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BUY AT93C66SC https://www.utsource.net/itm/p/12611592.html

Parameter	Description	Value
Device Type	Serial EEPROM	-
Manufacturer	Atmel	-
Package	SOIC-8	-
Operating Voltage	Vcc Range	2.7V to 5.5V
Memory Size	Total Memory	64 x 8-bit words
Organization	Memory Organization	64 x 8
Data Retention	Data Retention Time	100 years
Write Cycles	Endurance (Write/Erase)	1,000,000 cycles
Access Time	Read Access Time	400 ns max
Programming Time	Write/Program Time	5 ms max
Standby Current	Standby Current (Vcc = 5V)	1 渭A max
Active Current	Active Current (Vcc = 5V)	3 mA max
Operating Temperature	Operating Temperature Range	-40掳C to +85掳C
Storage Temperature	Storage Temperature Range	-65掳C to +150掳C
Pin Configuration	Pin 1: CS (Chip Select)	-
	Pin 2: SI (Serial In)	-
	Pin 3: SCK (Serial Clock)	-
	Pin 4: GND (Ground)	-
	Pin 5: Vcc (Power Supply)	-
	Pin 6: SO (Serial Out)	-
	Pin 7: HOLD (Hold/Suspend)	-
	Pin 8: WP (Write Protect)	-

Instructions for Use

1. Power Supply and Grounding:

   • Connect Vcc to the power supply (2.7V to 5.5V).
   • Connect GND to the ground.

2. Chip Select (CS):

   • Set CS low to enable communication.
   • Set CS high to disable communication and put the device into standby mode.

3. Serial Clock (SCK):

   • Apply a clock signal to SCK to synchronize data transfer.
   • The clock frequency should be within the specified range for the device.

4. Serial In (SI):

   • Send data to the device through the SI pin.
   • Data is shifted into the device on the rising edge of SCK.

5. Serial Out (SO):

   • Receive data from the device through the SO pin.
   • Data is shifted out of the device on the falling edge of SCK.

6. Hold/Suspend (HOLD):

   • Set HOLD low to suspend ongoing operations.
   • Set HOLD high to resume operations.

7. Write Protect (WP):

   • Set WP high to allow write operations.
   • Set WP low to prevent write operations (write protect).

8. Read Operation:

   • Set CS low.
   • Send the read command (00000011) followed by the address.
   • The device will output the data on SO.

9. Write Operation:

   • Set CS low.
   • Send the write command (00000010) followed by the address and data.
   • Wait for the write cycle to complete (up to 5 ms).

10. Erase Operation:

    • The device does not have a separate erase command; writing a new value to an address automatically erases the previous value.

11. Standby Mode:

    • Set CS high to enter standby mode, which reduces power consumption.

12. Temperature Considerations:

    • Ensure the operating temperature is within the specified range (-40掳C to +85掳C) for reliable operation.

13. Handling Precautions:

    • Handle the device with care to avoid static damage.
    • Follow proper soldering techniques to ensure reliable connections.

(For reference only)