HD64570 HITACHI [Hitachi Semiconductor], HD64570 Datasheet - Page 329

• Manufacturer Part Number: HD64570
• Description: Serial Communications Adaptor
• Manufacturer: HITACHI [Hitachi Semiconductor]

7.7
When using the timer, keep the following in mind:
Clear the TME bit of the timer control/status register (TCSR) before changing the timer
operating clock.
Reserved bits of the TCSR and the timer expand prescale register (TEPR) always read 0.
Precautions
Rev. 0, 07/98, page 313 of 453