Rainbow-electronics ATmega128RFA1 Bedienungsanleitung Seite 503

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503
8266A-MCU Wireless-12/09
ATmega128RFA1
Table 34-23. BODLEVEL Fuse Coding
BODLEVEL2:0 Fuses Min V
BOD
Typ V
BOD
Max V
BOD
Units
111 BOD Disabled
110 1.8 V
101 1.9 V
100 2.0 V
011 2.1 V
010 2.2 V
001 2.3 V
000 2.4 V
Note: V
BOT
may be below nominal minimum operating voltage. The device is operated down to V
DEVDD
= V
BOT
during the
production test. This guarantees that a Brown-Out Reset will occur before V
DEVDD
drops to a voltage where correct
operation of the microcontroller is no longer guaranteed. The test is performed using BODLEVEL = 110 for 16 MHz
operation of the ATmega128RFA1.
34.4 Power Management Electrical Characteristics
34.4.1 Power Switches
Table 34-6. Timing Characteristics of the Power Switches
Symbol Parameter Condition Min. Typ. Max. Units
t
POR
Power-on reset time Applies if the device is powered up TBD µs
t
BG
Bandgap startup time 7 µs
t
DRT_ON
DRT switch switch-on time 2 µs
t
PWRSW_ON
Power switch switch-on time 2 µs
34.4.2 Voltage Regulators
Table 34-7. Timing Characteristics of the Voltage regulators
Symbol Parameter Condition Min. Typ. Max. Units
t
AVREG
Power up time AVREG external capacity on pin AVDD TBD TBD µs
t
DVREG
Power up time DVREG Startup after wakeup,
Startup after deep sleep,
external capacity on pin DVDD TBD
TRX24 and all SRAM modules enabled)
30 µs
t
BG
Power up time bandgap TBD µs
34.5 2-wire Serial Interface Characteristics
The timing characteristics refer to Table 34-8.
Table 34-8 2-wire Serial Bus Requirements
Symbol Parameter Condition Min. Max. Units
V
IL
Input Low-voltage -0.5 0.3V
DEVDD
V
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