AM1705 Datasheet, PDF (121/155 Pages) Texas Instruments – AM1705 ARM Microprocessor

AM1705
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SPRS657 – FEBRUARY 2010
6.22.1 Timer Electrical Data/Timing
Table 6-77. Timing Requirements for Timer Input^{(1) (2)} (see Figure 6-40)
No.
PARAMETER
MIN
1
t_{c(TM64Px_IN12)}
2 t_w(TINPH)
3 t_w(TINPL)
4
t_{t(TM64Px_IN12)}
Cycle time, TM64Px_IN12
Pulse duration, TM64Px_IN12 high
Pulse duration, TM64Px_IN12 low
Transition time, TM64Px_IN12
4P
0.45C
0.45C
(1) P = OSCIN cycle time in ns. For example, when OSCIN frequency is 27 MHz, use P = 37.037 ns.
(2) C = TM64P0_IN12 cycle time in ns. For example, when TM64Px_IN12 frequency is 27 MHz, use C = 37.037 ns
MAX
0.55C
0.55C
0.05C
UNIT
ns
ns
ns
ns
1
2
3
4
4
TM64P0_IN12
Figure 6-40. Timer Timing
Table 6-78. Switching Characteristics Over Recommended Operating Conditions for Timer Output ⁽¹⁾
No.
PARAMETER
5 t_w(TOUTH)
6 t_w(TOUTL)
Pulse duration, TM64P0_OUT12 high
Pulse duration, TM64P0_OUT12 low
(1) P = OSCIN cycle time in ns. For example, when OSCIN frequency is 27 MHz, use P = 37.037 ns.
MIN
MAX UNIT
4P
ns
4P
ns
TM64P0_OUT12
5
6
Figure 6-41. Timer Timing
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Peripheral Information and Electrical Specifications 121
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