Atmel AVR ICE 200, Руководство пользователя

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Using the ICE 200
4-2 AVR ICE 200 User Guide
4.3 Clock Driver
Requirements
AVR microcontrollers are fully static designs. The processor clock can be stopped exter-
nally. The AVR emulator chip needs a clock to communicate with the main board.
Without a clock source, the host PC gets a serial communication time-out when reading
status or variables from the emulator. Please refer to the datasheet for information about
clock oscillator options.
NOTICE!
Using the ICE 200 outside the recommended operating conditions will
cause incorrect operation and can damage the emulator.
Table 4-2. Recommended Operating Conditions, Clock Drive (+4.0V to +5.5V)
(T
A
= 0
°
C to 70
°
C, V
CC
= +4.0V to +5.5V, GND = 0V)
Symbol Min Max
f
osc
(ATtiny12) 32.768 kHz 8 MHz
f
osc
(AT90S2313) 32.768 kHz 10 MHz
f
osc
(AT90S4433/2333) 32.768 kHz 10 MHZ
f
osc
(AT90S8515/4414) 32.768 kHz 8 MHz
f
osc
(AT90S8535/4434) 32.768 kHz 8 MHz
Table 4-3. Recommended Operating Conditions, Clock Drive (Low-v2.7V to
+4.0V) (T
A
= 0
°
C to 70
°
C, V
CC
= +2.7V to +4.0V, GND = 0V)
Symbol Min Max
f
osc
(ATtiny12/) 32.768 kHz 4 MHz
f
osc
(AT90S2313) 32.768 kHz 4 MHz
f
osc
(AT90S4433/2333) 32.768 kHz 4 MHz
f
osc
(AT90S8515/4414) 32.768 kHz 4 MHz
f
osc
(AT90S8535/4434) 32.768 kHz 4 MHz