Hello,
We are using Philips 89C52X2BN Micro controller with external 128K EPROM with Code Banking, We keep very little code in micro controller with jump instruction to external eprom.
Recently we notice the error;
if we set Lock Bit >> LB2 to protect the code in micro controller; in RTC setting command, Date setting not possible; so date related features are not usable; We checked other features; all are working but we are not 100% sure; we have to test the all.
If we program without protecting with Lock Bits >> the date setting is possible and system working fine.
If you encounter this problem; please suggest me how to debug this.
regards