IOP16 Timer Unit

Timer Unit

• Operates as a One-shot counter with single value
• Count uS, mSec or secs (allows for different resolutions)
• Write to count value starts timer
• Poll timer status

Address Value      Read/Write Data
0       uSec Count Write      0-255 uS count - write starts timer
1       mSec Count Write      0-255 mS count - write starts timer 
2       Sec Count  Write      0-255 sec count - write starts timer
3       Not Used   Write      Not used
0-3     Status     Read       1 = Count In progresss
                              0 = Done