Rainbow-electronics MAXQ7670 Manual do Utilizador descarregar pdf (Página 5)

MAXQ7670

Microcontroller with 10-Bit ADC,

PGA, 64KB Flash, and CAN Interface

_______________________________________________________________________________________ 5

ELECTRICAL CHARACTERISTICS (continued)

DVDDIO

= +5.0V, V

AVDD

= +3.3V, V

DVDD

= +2.5V, V

REFADC

= +3.3V, system clock = 16MHz. T

= T

MIN

to T

MAX

, unless otherwise

noted. Typical values are at T

= +25°C.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Output Current Capability LRAPD = 0 50 mA

Output Short-Circuit Current LRAPD = 0, AVDD shorted to AGND 100 mA

Maximum AVDD Bypass

Capacitor to AGND

LRAPD = 0 0.47 µF

+2.5V (DVDD) LINEAR REGULATOR

DVDD Output Voltage REGEN2 = GNDIO 2.38 2.5 2.62 V

No-Load Quiescent Current

REGEN2 = GNDIO, all internal digital

peripherals disabled

15 µA

Output Current Capability REGEN2 = GNDIO 50 mA

Output Short-Circuit Current

REGEN2 = GNDIO, DV

shorted to

DGND

100 mA

Maximum DVDD Bypass

Capacitor to DGND

REGEN2 = GNDIO 0.47 µF

SUPPLY-VOLTAGE SUPERVISORS AND BROWNOUT DETECTION

DVDD Reset Threshold

Asserts RESET if V

DVDD

is below this

threshold

2.1 2.25 V

DVDD Interrupt Threshold

Generates an interrupt if V

DVDD

falls

below this threshold

2.25 2.38 V

Minimum DVDD Interrupt and

Reset Threshold Difference

0.14 V

AVDD Interrupt Threshold

Generates an interrupt if V

AVDD

falls

below this threshold

3.0 3.15 V

DVDDIO Interrupt Threshold

Generates an interrupt if V

DVDDIO

falls below this threshold

4.5 4.75 V

1 2.75

1 3.6

Operational Range

DDIO

1 5.25

Supervisor Hysteresis ±0.7 %

CAN INTERFACE

CAN Baud Rate f

CANCLK

= 8MHz 1 Mbps

CANCLK Mean Frequency

Error

8MHz or 16MHz, 50ppm external

crystal

60 ppm

CANCLK Total Frequency Error

8MHz or 16MHz, 50ppm external

crystal; measured over a 12ms

interval; mean plus peak cycle jitter

< 0.5 %

1 2 3 4 5 6 7 8 9 10 ... 36 37

MAXQ7670 1

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