Precautions - Epson S1C17704 Technical Manual

14.9 Precautions

• Before the 8-bit OSC1 timer can start counting, the 8-bit OSC1 timer clock must be supplied from the OSC
module.
• When setting the count clock or count mode, make sure the 8-bit OSC1 timer is turned off.
• To avoid occurrence of unnecessary interrupts, be sure to reset T8OIF (D0/T8OSC1_IFLG register) before the
compare match interrupt is enabled using T8OIE (D0/T8OSC1_IMSK register).
• If the counter data register is read while the counter is running, the read value may not represent the current
counter value (an indefinite value may be read out).
To obtain the counter value, read the counter data register after stopping the counter. Or read the counter value
twice to determine that both read results are the same and that the read value is significant.
S1C17704 TECHNICAL MANUAL
EPSON
14 8-BIT OSC1 TIMER (T8OSC1)
14-15