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Jim Granville
09/09/13 23:28
Read: 1040 times


 
#190016 - LP52
Responding to: Mikkel C. Simonsen's previous message
Mikkel C. Simonsen said:
I like the LP52 also, but the frequency is just a bit low. The timing accuracy is better with the STC - when they run at the right speed ;)
Mikkel


I compared the new C8051F860, and LP52 for low average power systems.
The F860 has a fairly high 100uA origin current, from the regulator.

The LP52 can wait on event (PD) at ~1uA Icc and it has a PWDEX, that allows fast and fixed wakeup (16us) inside any INT width.
The LP52 Osc is slow, but that also means it can wakeup and run, almost at the POR threshold.

A LP51RB2 measures as ~14.7456MHz RC osc
LP52 is ~ 300uA Idle, in /12 mode, and a 51RB2 is about 2x that, with a ClkDivider set for similar MIPs. (it has the higher RC osc speed)




List of 12 messages in thread
TopicAuthorDate
STC 15F104E      Mikkel C. Simonsen      08/17/13 18:47      
   The STC12C5Axxx work fine      David Prentice      08/18/13 02:24      
      Others      Mikkel C. Simonsen      08/18/13 15:26      
   Support from STC?      Andy Neil      08/25/13 11:34      
      Support?      Mikkel C. Simonsen      08/27/13 21:02      
         Just Email STC      David Prentice      08/28/13 11:07      
            Who am I e-mailing?      Mikkel C. Simonsen      08/28/13 11:46      
               I guess SiliconRay is same as STC      David Prentice      08/28/13 16:03      
         RST and Full speed ?      Jim Granville      08/28/13 16:30      
            Divider      Mikkel C. Simonsen      09/04/13 15:52      
               LP52      Jim Granville      09/09/13 23:28      
   USB programming works      Mikkel C. Simonsen      09/04/13 15:59      

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