| ??? 09/26/03 08:16 Read: times |
#55534 - RE: troubles moving from AT89C52 to AT89S52 Responding to: ???'s previous message |
Hi,
Are you by any chance using ALE pin for some special puppose...?thats because the AUXR register by default in the AT89Sxx series are reset to 0x00,so the ALE always emits 1/6 the oscillator frequency... Can you give more details DISALE Disable/Enable ALE DISALE Operating Mode 0 ALE is emitted at a constant rate of 1/6 the oscillator frequency 1 ALE is active only during a MOVX or MOVC instruction Rgds Raj Shetgar |



