OSCIN
RESET
RESETOUT
Boot Pins
Config
Power
Supplies
Ramping
Power Supplies Stable
Clock Source Stable
1
2
3
4
TRST
OMAP-L137
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SPRS563G – SEPTEMBER 2008 – REVISED JUNE 2014
•
Internal memory is maintained through a warm reset
•
RESETOUT goes active
•
All device pins go to a high-impedance state
•
The RTC peripheral is not reset during a warm reset. A software sequence is required to reset the
RTC.
6.4.3
Reset Electrical Data Timings
Table 6-1
assumes testing over the recommended operating conditions.
Table 6-1. Reset Timing Requirements
(1) (2)
No.
MIN
MAX
UNIT
1
t
w(RSTL)
Pulse width, RESET/TRST low
100
ns
2
t
su(BPV-RSTH)
Setup time, boot pins valid before RESET/TRST high
20
ns
3
t
h(RSTH-BPV)
Hold time, boot pins valid after RESET/TRST high
20
ns
4
t
d(RSTH-
RESET high to RESETOUT high; Warm reset
4096
cycles
(3)
RESETOUTH)
RESET high to RESETOUT high; Power-on Reset
6192
(1)
RESETOUT is multiplexed with other pin functions. See the Terminal Functions table,
Table 3-5
for details.
(2)
For power-on reset (POR), the reset timings in this table refer to RESET and TRST together. For warm reset, the reset timings in this
table refer to RESET only (TRST is held high).
(3)
OSCIN cycles.
Figure 6-4. Power-On Reset (RESET and TRST active) Timing
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