at91rm3400 ATMEL Corporation, at91rm3400 Datasheet - Page 435

• Manufacturer Part Number: at91rm3400
• Description: Atmel Advanced At91 Arm Microcontroller
• Manufacturer: ATMEL Corporation

Crystal Oscillators Characteristics
32 kHz Oscillator Characteristics
Table 79. 32 kHz Oscillator Characteristics
Notes:
Main Oscillator Characteristics
Table 80. Main Oscillator Characteristics
Notes:
PLL Characteristics
Table 81. Phase Lock Loop Characteristics
1790A–ATARM–11/03
Symbol
1/(t
t
Symbol
1/(t
C
C
t
Symbol
F
F
K
I
ST
ST
P
OUT
IN
O
L1
L
CP32KHz
CPMAIN
, C
L2
1. R
1. C
)
)
s
S
is the equivalent series resistance, C
is the shunt capacitance
Parameter
Crystal Oscillator Frequency
Duty Cycle
Startup Time
Parameter
Crystal Oscillator Frequency
Internal Load Capacitance
(C
Equivalent Load Capacitance
Duty Cycle
Startup Time
Parameter
Output Frequency
Input Frequency
VCO Gain
Pump Current
L1
= C
L2
)
Conditions
V
C
C
C
Conditions
Conditions
Measured at the PCK output pin
V
R
L
DDPLL
DDOSC
S
S
S
s
is the equivalent load capacitance
= 3 pF
= 7 pF
= 7 pF
= 50 k , C
= 1.2 to 2V
= 1.2 to 2V
(1)
(1)
(1)
1/(t
1/(t
1/(t
L
CPMAIN
CPMAIN
CPMAIN
=12.5 pF
) = 3 MHz
) = 16 MHz
) = 20 MHz
(1)
Min
Min
Min
120
40
20
40
36
3
1
32.768
12.5
Typ
Typ
Typ
190
50
16
25
50
44
AT91RM3400
Max
Max
14.5
Max
900
100
300
1.4
60
20
60
32
60
1
MHz/V
MHz
MHz
MHz
Unit
Unit
Unit
kHz
ms
ms
pF
pF
%
%
A
435