AM1705_1004 Datasheet, PDF (42/155 Pages) Texas Instruments – AM1705 ARM Microprocessor

AM1705
SPRS657A – FEBRUARY 2010 – REVISED APRIL 2010
OSCIN
OSCOUT
NC
OSCV_SS
Clock
Input
to PLL
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Figure 6-7. External 1.2V Clock Source
Table 6-4. OSCIN Timing Requirements
No.
PARAMETER
MIN
MAX
UNIT
f_OSCIN
t_c(OSCIN)
t_w(OSCINH)
t_w(OSCINL)
t_t(OSCIN)
t_j(OSCIN)
OSCIN frequency range (OSCIN)
Cycle time, external clock driven on OSCIN
Pulse width high, external clock on OSCIN
Pulse width low, external clock on OSCIN
Transition time, OSCIN
Period jitter, OSCIN
12
20
0.4 t_c(OSCIN)
0.4 t_c(OSCIN)
50
0.25P ⁽¹⁾
0.02P
MHz
ns
ns
ns
ns
ns
(1) P = the period of the applied signal. Maintaining transition times as fast as possible is recommended to improve noise immunity on input
signals.
42
Peripheral Information and Electrical Specifications
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