Rainbow-electronics MAXQ7670 Manual do Utilizador descarregar pdf (Página 7)

MAXQ7670

Microcontroller with 10-Bit ADC,

PGA, 64KB Flash, and CAN Interface

_______________________________________________________________________________________ 7

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 Capacitance I/O pins three-state 15 pF

PD0._ = 0 880

Maximum Output Impedance

PD0._ = 1 450

Ω

SYSTEM CLOCK

System Clock Frequency f

SYSCLK

From any clock source 0 16.67 MHz

SPI INTERFACE TIMING

SPI Master Operating

Frequency

MCLK

0.5 x f

SYSCLK

8 MHz

SPI Slave Mode Operating

Frequency

SCLK

SYSCLK

/8 MHz

SCLK Output Pulse-Width

High/Low

MCH

MCL

SYSCLK

- 25

SCLK Input Pulse-Width

High/Low

SCH

, t

SCL

SYSCLK

MOSI Output Hold Time

After SCLK Sample Edge

MOH

SYSCLK

- 25

MOSI Output Setup Time to

SCLK Sample Edge

MOS

SYSCLK

- 25

MISO Input Setup Time to

SCLK Sample Edge

MIS

30 ns

MISO Input Hold Time After

SCLK Sample Edge

MIH

0ns

SCLK Inactive to MOSI

Inactive

MLH

SYSCLK

- 25

MOSI Input Setup Time to

SCLK Sample Edge

SIS

30 ns

MOSI Input Hold Time After

SCLK Sample Edge

SIH

SYSCLK

+ 25

MISO Output Valid After

SCLK Shift Edge Transition

SOV

3 t

SYSCLK

+ 25

MISO Output Disabled After

SS Edge Rise

SLH

2 t

SYSCLK

+ 50

SS Falling Edge to MISO Active t

SOE

2 t

SYSCLK

+ 2.5

1 2 3 4 5 6 7 8 9 10 11 12 ... 36 37

MAXQ7670 1

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