SPRS293 − OCTOBER 2005
95
POST OFFICE BOX 1443
•
HOUSTON, TEXAS 77251−1443
TIMER TIMING
timing requirements for timer inputs
†
(see Figure 47)
NO.
−150
UNIT
NO.
MIN
MAX
UNIT
1
tw(TINPH)
Pulse duration, TINP high
2P
ns
2
tw(TINPL)
Pulse duration, TINP low
2P
ns
† P = 1/CPU clock frequency in ns. For example, when running parts at 150 MHz, use P = 10 ns.
switching characteristics over recommended operating conditions for timer outputs
†
(see Figure 47)
NO.
PARAMETER
−150
UNIT
NO.
PARAMETER
MIN
MAX
UNIT
3
tw(TOUTH)
Pulse duration, TOUT high
4P − 3
ns
4
tw(TOUTL)
Pulse duration, TOUT low
4P − 3
ns
† P = 1/CPU clock frequency in ns. For example, when running parts at 150 MHz, use P = 10 ns.
TINPx
TOUTx
4
3
2
1
Figure 47. Timer Timing
