AM1705_1007 Datasheet, PDF (40/156 Pages) Texas Instruments – AM1705 ARM Microprocessor

AM1705
SPRS657A – FEBRUARY 2010 – REVISED APRIL 2010
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6.5.3 Reset Electrical Data Timings
Table 6-2 assumes testing over the recommended operating conditions.
Table 6-2. Reset Timing Requirements (, ⁽¹⁾)
No.
PARAMETER
MIN MAX
UNIT
1 t_w(RSTL)
2 t_su(BPV-RSTH)
3 t_h(RSTH-BPV)
Pulse width, RESET/TRST low
Setup time, boot pins valid before RESET/TRST high
Hold time, boot pins valid after RESET/TRST high
100
ns
20
ns
20
ns
(1) 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).
Power
Supplies
Ramping
OSCIN
Clock Source Stable
Power Supplies Stable
1
RESET
TRST
Boot Pins
OSCIN
TRST
RESET
2
3
Config
Figure 6-4. Power-On Reset (RESET and TRST active) Timing
Power Supplies Stable
1
Boot Pins
Driven or Hi-Z
3
2
Config
Figure 6-5. Warm Reset (RESET active, TRST high) Timing
40
Peripheral Information and Electrical Specifications
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