Casio FX-880P

Überprüfung der verbauten RAM Bausteine

 

I've checked the RAM modules KM62256CLGI-71. They have no Low power consumption!

 

I have to replace them with LY62256SL.

 

SAMSUNG KM62256CLGI-71

32Kx8 bit Low Power CMOS Static RAM

Power Supply Voltage : Single 5V±10%

Power Dissipation:

Standby(ISB1,TYP.) 100µA = 0.1mA !!!

Operating(Icc,TYP.) 70mA

 

LYONTEK LY62256SL

32K X 8 BIT LOW POWER CMOS SRAM

Single 2.7~5.5V power supply

Power Dissipation:

Standby(ISB1,TYP.) 1µA

Operating(Icc,TYP.) 20/15/10mA

 

Done