AT91SAM9G45-EKES Atmel, AT91SAM9G45-EKES Datasheet - Page 1169

• Manufacturer Part Number: AT91SAM9G45-EKES
• Description: KIT EVAL FOR AT91SAM9G45
• Manufacturer: Atmel
• Series: AT91SAM Smart ARMr
• Type: MCUr

Specifications of AT91SAM9G45-EKES

• Contents: Board
• Processor To Be Evaluated: SAM9G45
• Data Bus Width: 32 bit
• Interface Type: I2C, SPI, UART
• Maximum Operating Temperature: + 50 C
• Minimum Operating Temperature: - 10 C
• Operating Supply Voltage: 1.8 V to 3.3 V
• For Use With/related Products: AT91SAM9G45
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: Q4626953

46.12 Core Power Supply POR Characteristics
Table 46-25. Power-On-Reset Characteristics
46.12.1
46.12.2
6438F–ATARM–21-Jun-10
Symbol
V
V
T
th+
th-
RES
Power Sequence Requirements
Power-Up Sequence
Parameter
Threshold Voltage Rising
Threshold Voltage Falling
Reset Time
The AT91SAM9G45 board design must comply with the power-up guidelines below to guaran-
tee reliable operation of the device. Any deviation from these sequences may prevent the device
from booting.
Figure 46-2.
VDDCORE and VDDBU are controlled by internal POR (Power-On-Reset) to guarantee that
these power sources reach their target values prior to the release of POR.
• VDDIOP must be
• VDDIOM must reach V
(Tres + T1) after VDDCORE has reached
(Tres +T1 +T2) after VDDCORE has reached
– T
– T1 = 3 x T
– T2 = 16 x T
RES
VDDCOREtyp
Core Supply POR Output
is a POR characteristic
VDDIOtyp
VDD (V)
Conditions
Minimum Slope of +2.0V/30ms
VDDCORE and VDDIO Constraints at Startup
SLCK
Vth+
Voh
Vih
SLCK
SLCK
V
IH
OH
(refer to DC characteristics,
(refer to DC characteristics,
<--- Tres --->
V
th+
.
V
Min
0.5
0.4
30
th+
< T1 >
Table
<------------ T2----------->
Table
46-2, for more details) within
Typ
0.7
0.6
70
46-2, for more details) within
AT91SAM9G45
VDDIO > Vih
VDDIO > Voh
Max
0.89
0.85
130
VDDCORE
VDDIO
t
Units
μs
V
V
1169