MAXQ7665A datasheet(8/47 Pages) MAXIM

8 / 47 page

16-Bit RISC Microcontroller-Based

Smart Data-Acquisition Systems

________________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(AVDD = DVDDIO = +5.0V, DVDD = +3.3V, fSYSCLK = 8MHz, VREFDAC = VREFADC = +5V, TA = TMIN to TMAX, unless otherwise noted.

Typical values are at TA = +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Crystal Oscillator Stability

Excluding crystal

ppm/V

HFIC = 00b (default)

HFIC = 01b

HFIC = 10b

XIN Input Load Capacitance

HFIC = 11b

HFOC = 00b (default)

HFOC = 01b

HFOC = 10b

XOUT Output Load Capacitance

HFOC = 11b

XIN Input Low Voltage

Driven with external clock source

0.3 x

DVDD

XIN Input High Voltage

Driven with external clock source

0.7 x

DVDD

INTERNAL RC OSCILLATOR

Oscillator Frequency

7.0

7.6

8.0

MHz

Oscillator Startup Time

µs

Oscillator Jitter

2.7

UART (LIN) INTERFACE (UTX, URX)

UART Baud Rate

Mbps

Minimum LIN Mode Operation

kbps

Maximum LIN Mode Operation

kbps

Crystal clock source

-0.5

+0.5

Using internal RC oscillator before

autobaud

-14.0

+14.0

UART Baud Rates Error

Using internal RC oscillator after autobaud

-0.5

+0.5

RESET (

RESET)

RESET Internal Pullup Resistance

Pullup to DVDD

305

Ω

High, RESET deasserted, no load

0.9 x

DVDD

RESET Output Voltage

Low, RESET asserted, no load

0.4

RESET Input High Voltage

0.7 x

DVDD

RESET Input Low Voltage

0.3 x

DVDD

DIGITAL INPUTS (P0._, CANRXD, URX,

REGEN)

Input Low Voltage

0.3 x

DVDDIO

Input High Voltage

0.7 x

DVDDIO

Input Hysteresis

500

Input Leakage Current

VIN = GNDIO or DVDDIO, pullup disabled

-1

±0.01

µA

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