at91rm3400 ATMEL Corporation, at91rm3400 Datasheet - Page 433

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

Clocks Characteristics
These parameters are given in the following conditions:
•
•
The Temperature Derating Factor described in “Applicable Conditions and Derating Data” on page 439, section “Tempera-
ture Derating Factor” on page 440 and V
Data” on page 439, section “VDDCORE Voltage Derating Factor” on page 440 are both applicable to these characteristics.
Processor Clock Characteristics
Table 74. Processor Clock Waveform Parameters
Master Clock Characteristics
Table 75. Master Clock Waveform Parameters
XIN Clock Characteristics
Table 76. XIN Clock Electrical Characteristics
Notes:
1790A–ATARM–11/03
Symbol
1/(t
t
Symbol
1/(t
t
t
t
Symbol
1/(t
t
t
t
C
R
CPPCK
CPMCK
CHMCK
CLMCK
CPXIN
CHXIN
CLXIN
IN
IN
V
Ambient Temperature = 25°C
CPPCK
CPMCK
CPXIN
DDCORE
1. These characteristics apply only when the Main Oscillator is in Bypass Mode (i.e., when MOSCEN = 0 in the CKGR_MOR
)
)
)
register, refer to “PMC Clock Generator Main Oscillator Register” on page 146).
= 1.8V
Parameter
Processor Clock Frequency
Processor Clock Period
Parameter
Master Clock Frequency
Master Clock Period
Master Clock High Half-period
Master Clock Low Half-period
Parameter
XIN Clock Frequency
XIN Clock Period
XIN Clock High Half-period
XIN Clock Low Half-period
XIN Input Capacitance
XIN Pulldown Resistor
DDCORE
Voltage Derating Factor described in “Applicable Conditions and Derating
Conditions
(1)
(1)
Conditions
Conditions
0.4 x t
0.4 x t
20.0
Min
11.1
14.3
Min
Min
7.1
7.1
CPXIN
CPXIN
0.6 x t
0.6 x t
AT91RM3400
Max
50.0
Max
Max
70.0
500
25
90
CPXIN
CPXIN
Units
Units
Units
MHz
MHz
MHz
pF
k
ns
ns
ns
ns
ns
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