Rainbow-electronics MAXQ7670 Manual de usuario descargar pdf (Pagina 3)

MAXQ7670

Microcontroller with 10-Bit ADC,

PGA, 64KB Flash, and CAN Interface

_______________________________________________________________________________________ 3

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

MEMORY SECTION

Flash Memory Size Program or data storage 64 KB

Flash Page Size 16-bit word size 256 Words

Flash Erase/Write Endurance Program or data (Note 7) 10,000 Cycles

All flash, T

= +25°C 100

Flash Data Retention (Note 7)

All flash, T

= +85°C 15

Years

Flash page erase 20 50

Flash Erase Time

Entire flash mass erase 200 500

Flash single word programming 20 40 µs

Flash Programming Time

Entire flash programming 0.66 1.31 s

RAM Memory Size 2KB

Utility ROM Size 16-bit word size 4 KWords

ANALOG SENSE PATH (Includes PGA and ADC)

Resolution N

ADC

No missing codes 10 Bits

PGA gain = 16V/V, bipolar mode,

= ±100mV, 150.9ksps

±0.5 ±1

Integral Nonlinearity INL

ADC

PGA gain = 1V/V, unipolar mode,

= +1.0V, 250ksps

±0.4 ±1

LSB

Differential Nonlinearity DNL

ADC

PGA gain = 1V/V or 16V/V ±0.4 ±1 LSB

Input-Referred Offset Error

Test at T

= +25°C,

PGA gain = 1V/V or 16V/V

±1 ±10 mV

Offset-Error Temperature

Coefficient

PGA gain = 16V/V, bipolar mode ±2 µV/°C

Gain Error

PGA gain = 16V/V, bipolar mode,

excludes offset and reference error,

test at T

= +25°C

-2 +2 %

Gain-Error Temperature

Coefficient

PGA gain = 16V/V, bipolar mode ±5 ppm/°C

Conversion Clock Frequency f

ADCCLK

SYSCLK

= 8MHz or 16MHz 0.5 4.0 MHz

PGA gain = 16V/V, f

ADCCLK

= 4MHz 150.9

Sample Rate f

SAMPLE

PGA gain = 1V/V, f

ADCCLK

= 4MHz 250

ksps

PGA gain = 16V/V,

13.5 ADCCLK cycles at 4MHz

3.375

Channel Select, Track-and-

Hold Acquisition Time

ACQ

PGA gain = 1V/V,

three ADCCLK cycles at 4MHz

0.75

µs

Conversion Time t

CONV

13 ADCCLK cycles at 4MHz 3.25 µs

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)

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

MAXQ7670 1

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Rainbow-electronics MAXQ7670 Manual de usuario Pagina 3

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