ATXMEGA32D4-CU 查看數據表（PDF） - Atmel Corporation

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ATXMEGA32D4-CU

8/16-bit Atmel XMEGA D4 Microcontroller

Atmel Corporation 

32.9 Brownout Detection Characteristics

Table 32-14. Brownout detection characteristics.

Symbol Parameter

Condition

VBOT

tBOD

BOD level 0 falling VCC

BOD level 1 falling VCC

BOD level 2 falling VCC

BOD level 3 falling VCC

BOD level 4 falling VCC

BOD level 5 falling VCC

BOD level 6 falling VCC

BOD level 7 falling VCC

Detection time

Continuous mode

Sampled mode

VHYST Hysteresis

XMEGA D4

Min.

1.60

Typ.

1.62

1.8

2.0

2.2

2.4

2.6

2.8

3.0

0.4

1000

1.2

Max.

1.72

Units

V

µs

%

32.10 External Reset Characteristics

Table 32-15. External reset characteristics.

Symbol Parameter

tEXT Minimum reset pulse width

VRST

Reset threshold voltage (VIH)

Reset threshold voltage (VIL)

RRST Reset pin pull-up resistor

Condition

VCC = 2.7 - 3.6V

VCC = 1.6 - 2.7V

VCC = 2.7 - 3.6V

VCC = 1.6 - 2.7V

Min.

Typ.

95

0.60×VCC

0.60×VCC

0.50×VCC

0.40×VCC

25

Max.

1000

Units

ns

V

kΩ

32.11 Power-on Reset Characteristics

Table 32-16. Power-on reset characteristics.

Symbol Parameter

Condition

Min.

VPOT- (1)

VCC falls faster than 1V/ms

POR threshold voltage falling VCC

0.4

VCC falls at 1V/ms or slower

0.8

VPOT+ POR threshold voltage rising VCC

Note: 1. VPOT- values are only valid when BOD is disabled. When BOD is enabled VPOT- = VPOT+.

Typ.

1.0

1.0

1.3

Max. Units

V

1.59

73

8135L–AVR–06/12

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