AT91SAM7S32-AI ATMEL [ATMEL Corporation], AT91SAM7S32-AI Datasheet - Page 413

• Manufacturer Part Number: AT91SAM7S32-AI
• Description: AT91 ARM Thumb-based Microcontrollers
• Manufacturer: ATMEL [ATMEL Corporation]

Crystal Oscillators Characteristics
RC Oscillator Characteristics
Table 88. RC Oscillator Characteristics
Main Oscillator Characteristics
Table 89. Main Oscillator Characteristics
Notes:
XIN Clock Characteristics
Table 90. XIN Clock Electrical Characteristics
Note:
6071A–ATARM–28-Oct-04
Symbol
1/(t
t
I
Symbol
1/(t
C
C
t
I
Symbol
1/(t
t
t
t
C
R
ST
OSC
ST
OSC
CPXIN
CHXIN
CLXIN
L1
L
IN
IN
CPRC
CPMAIN
, C
CPXIN
L2
1. C
1. These characteristics apply only when the Main Oscillator is in bypass mode (i.e., when MOSCEN = 0 and OSCBYPASS =
)
)
)
1 in the CKGR_MOR register, see “PMC Clock Generator Main Oscillator Register” on page 166).
S
is the shunt capacitance
Parameter
RC Oscillator Frequency
Duty Cycle
Startup Time
Current Consumption
Parameter
Crystal Oscillator Frequency
Internal Load Capacitance
(C
Equivalent Load Capacitance
Duty Cycle
Startup Time
Current Consumption
L1
Parameter
XIN Clock Frequency
XIN Clock Period
XIN Clock High Half-period
XIN Clock Low Half-period
XIN Input Capacitance
XIN Pull-down Resistor
= C
L2
)
Conditions
V
V
After Startup Time
Conditions
V
C
C
C
Active mode
Standby mode
DDPLL
DDPLL
DDPLL
S
S
S
= 3 pF
= 7 pF
= 7 pF
= 1.65V
= 1.65V
= 1.2 to 2V
(1)
(1)
(1)
1/(t
1/(t
1/(t
Conditions
(1)
(1)
CPMAIN
CPMAIN
CPMAIN
) = 3 MHz
) = 16 MHz
) = 20 MHz
AT91SAM7S32 Preliminary
0.4 x t
0.4 x t
20.0
Min
CPXIN
CPXIN
Min
Min
22
45
40
3
12.5
Typ
Typ
0.6 x t
0.6 x t
32
50
16
25
50
Max
50.0
500
25
CPXIN
CPXIN
Max
Max
14.5
550
1.9
1.4
42
55
75
20
60
1
1
Units
MHz
k
pF
ns
MHz
Unit
KHz
Unit
µA
ms
µA
µA
µs
pF
pF
%
%
413