OMAP-L138 Datasheet, PDF (65/255 Pages) Texas Instruments – OMAP-L138 Low-Power Applications Processor

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OMAP-L138 Low-Power Applications Processor
SPRS586 – JUNE 2009
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.
PARAMETER
1.2V
1.1V
1.0V
MIN MAX MIN MAX MIN MAX
UNIT
1 t_w(RSTL)
Pulse width, RESET/TRST low
2 t_su(BPV-RSTH)
Setup time, boot pins valid before RESET/TRST high
3 t_h(RSTH-BPV)
Hold time, boot pins valid after RESET/TRST high
4 ^{td(RSTH-RESETOUTH) RESET high to RESETOUT high; Warm reset}
RESET high to RESETOUT high; Power-on Reset
100
100
100
ns
20
20
20
ns
20
20
20
ns
14
16
20 cycles⁽³⁾
14
16
20
5 t_{d(RSTL-RESETOUTL)} Delay time, RESET/TRST low to RESETOUT low
14
16
20
ns
(1) RESETOUT is multiplexed with other pin functions. See the Terminal Functions table, Table 3-4 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.
Power
Supplies
Ramping
OSCIN
Clock Source Stable
Power Supplies Stable
1
RESET
TRST
RESETOUT
Boot Pins
4
2
3
Config
Figure 6-4. Power-On Reset (RESET and TRST active) Timing
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Peripheral Information and Electrical Specifications
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