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4 power management electrical characteristics, 1 power switches, 2 voltage regulators – Rainbow Electronics ATmega128RFA1 User Manual

Page 503: 5 2-wire serial interface characteristics, Power management electrical characteristics" on, Wire serial interface, Power management, Power management electrical, Atmega128rfa1

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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