AM1707_15 Datasheet, PDF (45/200 Pages) Texas Instruments – AM1707 ARM® Microprocessor

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AM1707
SPRS637E – FEBRUARY 2010 – REVISED JUNE 2014
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⁾
N
MIN MAX
UNIT
o.
1 t_w(RSTL)
2 t_su(BPV-RSTH)
3 t_h(RSTH-BPV)
4 ^{td(RSTH-RESETOUTH)}
Pulse width, RESET/TRST low
Setup time, boot pins valid before RESET/TRST high
Hold time, boot pins valid after RESET/TRST high
RESET high to RESETOUT high; Warm reset
RESET high to RESETOUT high; Power-on Reset
100
20
20
4096
6192
ns
ns
ns
cycles ⁽³⁾
(1) RESETOUT is multiplexed with other pin functions. See the Terminal Functions table, Table 3-3 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
Power Supplies Stable
OSCIN
TRST
1
RESET
4
RESETOUT
Boot Pins
Driven or Hi-Z
3
2
Config
Figure 6-5. Warm Reset (RESET active, TRST high) Timing
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Peripheral Information and Electrical Specifications
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