Datasheet

1167
SAM9G45 [DATASHEET]
Atmel-6438O-ATARM-SAM9G45-Datasheet_08-Dec-15
45.12 Core Power Supply POR Characteristics
45.13 SMC Timings
45.13.1 Timing Conditions
SMC Timings are given for MAX corners.
Timings are given assuming a capacitance load on data, control and address pads as defined in Table 45-27.
In the following tables, t
CPMCK
is MCK period.
45.13.2 Timing Extraction
45.13.2.1 Zero Hold Mode Restrictions
Table 45-25. Power-on Reset Characteristics
Symbol Parameter Conditions Min Typ Max Unit
V
T+
Threshold Voltage Rising Minimum Slope of +2.0V/30ms 0.5 0.7 0.89 V
V
T-
Threshold Voltage Falling – 0.4 0.6 0.85 V
t
RST
Reset Time – 30 70 130 µs
Table 45-26. Power-down Timing Specification
Symbol Parameter Conditions Min Max Unit
t
RSTPD
Reset Delay at Power-Down From NRST low to the first supply turn-off 0 – ms
Table 45-27. Capacitance Load
Supply
Corner
Max Min
3.3V 50 pF 5 pF
1.8V 30 pF 5 pF
Table 45-28. Zero Hold Mode Use Maximum System Clock Frequency (MCK)
Symbol Parameter
Min
Unit1.8V VDDIOM Supply 3.3V VDDIOM Supply
f
MAX
MCK Frequency 66 66 MHz