AT91SAM9G45-CU-999 Atmel, AT91SAM9G45-CU-999 Datasheet - Page 1169

• Manufacturer Part Number: AT91SAM9G45-CU-999
• Description: IC MCU ARM9 APMC 324TFBGA
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM9G45-CU-999

• Core Processor: ARM9
• Core Size: 16/32-Bit
• Speed: 400MHz
• Connectivity: EBI/EMI, Ethernet, I²C, IrDA, MMC, SPI, SSC, UART/USART, USB
• Peripherals: AC'97, DMA, I²S, LCD, POR, PWM, WDT
• Number Of I /o: 160
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: ROM
• Ram Size: 128K x 8
• Voltage - Supply (vcc/vdd): 0.9 V ~ 1.1 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 324-TFBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Supplier Unconfirmed

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
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