AT91SAM7A1-AU Atmel, AT91SAM7A1-AU Datasheet - Page 18

• Manufacturer Part Number: AT91SAM7A1-AU
• Description: IC ARM7 MCU 32BIT ROMLESS144LQFP
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM7A1-AU

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 40MHz
• Connectivity: CAN, EBI/EMI, SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 49
• Program Memory Type: ROMless
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 144-LQFP
• For Use With: AT91SAM7A1-EK - BOARD EVAL FOR AT91SAM7A1
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

6.4.2
Table 6-7.
18
Code
Du
tsu
C1
C2
CL
DL
Rs
Cs
Cm
AT91SAM7A1
Real Time Clock Oscillator
Real Time Clock Oscillator
Parameter
Duty cycle
Startup time
Internal capacitance (RTCKI/GND)
Internal capacitance (RTCKO/GND)
Equivalent load capacitance
(RTCKI/RTCKO)
Drive level
Series resistance
Shunt capacitance
Load capacitance
Motional capacitance
Conditions
@ 32.768 kHz
Crystal
Crystal
Crystal @ 32.768 kHz
Crystal @ 32.768 kHz
Min
0.8
40
1
Typ
20
10
50
20
10
6048B–ATARM–29-Jun-06
Max
1.5
1.7
60
60
1
4
kOhm
Unit
µW
pF
pF
pF
pF
pF
%
fF
s