ROHM Semiconductor - ROHM Co., Ltd.

ROHM FAQ

FAQ's

What is the appropriate interval for frequency accuracy adjustment?
I want to know the detail about the adjustment operation actually performed.
- The adjustment interval can be set by a customer program.
  It is assumed that a frequency accuracy adjustment program is executed before a process requiring high frequency accuracy such as UART communication.
  The frequency accuracy adjustment program executes the following:
  (1) Turn ON the internal temperature sensor and execute A/D conversion of sensor output.
  (2) Calculate an adjustment value based on the A/D conversion result.
  (3) Set the adjustment value to the low-speed RC oscillation frequency adjustment register (LRCADJ).
  Related Products: ML610(Q)40x, ML610(Q)42x, ML610(Q)47x, ML610(Q)48x, ML610Q41x, ML610Q43x, ML610Q46x, ML620Q416/ML620Q418, ML620Q503H/ML620Q504H/ML620Q506H