CY62148EV30 schematic check

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Anonymous
Not applicable

 hi i want to put CY62148EV30 in power down when i am on battery i have drawn schematic please check this and let me know where i am wrong .

   

thanks for your help

   

Regards,

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1 Solution
nileshbadodekar
Employee
Employee
5 sign-ins 10 replies posted 5 replies posted

Hi!

   

CY62148EV30 is a Single Chip Enable device.

   

Ball A3 ( connected to Battery Backup ) is an NC for CY62148EV30 part.

   

To Put the device in Stand by mode (Power down mode), the CE# pin has to be de-asserted.

   

Once CE# pin is High, Vcc (Battery voltage which will eventually power V_Backup) for SRAM can go down as low as VCCDR ( 1.5V) and SRAM will be in Power down mode.

   

To bring back SRAM in Active mode, Vcc has to come back to Operating Voltage and then CE# can be asserted.

   

To maintaining Pin Compatibility, you can connect Ball A3 ( NC internally) To V_Backup

   

 

   

Regards,

   

Nilesh

   

Applications Engineer Staff,

   

Async SRAM, Memory Products Division

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3 Replies
nileshbadodekar
Employee
Employee
5 sign-ins 10 replies posted 5 replies posted

Hi!

   

CY62148EV30 is a Single Chip Enable device.

   

Ball A3 ( connected to Battery Backup ) is an NC for CY62148EV30 part.

   

To Put the device in Stand by mode (Power down mode), the CE# pin has to be de-asserted.

   

Once CE# pin is High, Vcc (Battery voltage which will eventually power V_Backup) for SRAM can go down as low as VCCDR ( 1.5V) and SRAM will be in Power down mode.

   

To bring back SRAM in Active mode, Vcc has to come back to Operating Voltage and then CE# can be asserted.

   

To maintaining Pin Compatibility, you can connect Ball A3 ( NC internally) To V_Backup

   

 

   

Regards,

   

Nilesh

   

Applications Engineer Staff,

   

Async SRAM, Memory Products Division

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Anonymous
Not applicable

 thanks for your reply i am using CY62148EV30LL part.

   

while putting in Power down mode i put CE1 (PIN G3) High and CE2 (PIN A3) to v_backup .

   

I hope in this i will put SRAM in power down mode .

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nileshbadodekar
Employee
Employee
5 sign-ins 10 replies posted 5 replies posted

Hi,

   

Just to restate, CY62148EV30LL is a single Chip enable part..so A3 ball is not connected to chip.

   

G3 ball ( CE#) has to be pulled high as you rightly said to put chip in power down mode

   

 

   

Regards,

   

NILE

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