MAXQ7665A datasheet(9/47 Pages) MAXIM

9 / 47 page

16-Bit RISC Microcontroller-Based

Smart Data-Acquisition Systems

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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

Input Pullup Resistance

Pullup to DVDDIO

400

Ω

Input Capacitance

VIN = GNDIO or DVDDIO

DIGITAL OUTPUTS (P0._, CANTXD, UTX)

Output Low Voltage

ISINK = 1.6mA

0.4

Output High Voltage

ISOURCE = 1.6mA

DVDDIO

- 0.5

Output Leakage Current

I/O pins, three-state

-1

±0.01

µA

Output Capacitance

I/O pins, three-state

Short to DVDDIO = +5.25V

Output Short-Circuit Current

Short to GNDIO

Note 1: All devices are 100% production tested at TA = +25°C.

Note 2: All analog functions disabled and all digital inputs connected to supply or ground.

Note 3: High-speed mode: CPU and three timers running at 8MHz from an external crystal oscillator, CAN enabled and communi-

cating at 500kbps, all other peripherals disabled, all digital I/Os static at DVDDIO or GNDIO.

Note 4: CAN transmitting at 500kbps, one timer output at 500kHz, all active I/Os are loaded with 20pF capacitor, all remaining digi-

tal I/Os are at DVDDIO or GNDIO.

Note 5: Guaranteed by design and characterization.

Note 6: Based on diode ideality factor of 1.008.

Note 7: DVDD must rise above VVDBR for RESET to become deasserted. Caution: Operation is not guaranteed for DVDD below

+2.7V (utility ROM) or +3.0V (flash).

Note 8: RESET is asserted if DVDD falls below VVDBR. Caution: Operation is not guaranteed for DVDD below +2.7V (utility ROM) or

+3.0V (flash).

Note 9: An interrupt is generated if DVDD falls below VVDBI. Caution: Operation is not guaranteed for DVDD below +2.7V (utility

ROM) or +3.0V (flash).

Note 10: An interrupt is generated if DVDDIO falls below VVIOBI. Caution: Operation is not guaranteed if DVDDIO or AVDD is below 4.75V,

except for the DVDDIO brownout monitor and +3.3V linear regulator, that still operate down to 0V and +4.25V, respectively.

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