MCP4716 datasheet(8/86 Pages) MICROCHIP

tên linh kiện	MCP4716

Giải thích chi tiết về linh kiện	8-/10-/12-Bit Voltage Output Digital-to-Analog Converter with EEPROM and I2C Interface

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8 / 86 page

MCP4706/4716/4726

DS22272A-page 8

1.1

I2C Mode Timing Waveforms and Requirements

FIGURE 1-1:

Power-On and Brown-Out Reset Waveforms.

FIGURE 1-2:

I2C Power-Down Command Timing.

TABLE 1-1:

RESET TIMING

Timing Characteristics

Standard Operating Conditions (unless otherwise specified)

Operating Temperature

–40°C

≤ T

A ≤ +125°C (extended)

All parameters apply across the specified operating ranges unless noted.

VDD = +2.7V to 5.5V, 5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ devices.

Typical specifications represent values for VDD = 5.5V, TA = +25°C.

Parameters

Sym

Min

Typ

Max

Units

Conditions

Power Up Reset

Delay

tPORD

—

60

—

µs

Monitor ACK bit response to ensure device

responds to command.

Brown Out Reset

Delay

tBORD

—1

—

µs

VDD transitions from VDD(MIN) → > VPOR

VOUT driven to VOUT disabled

Power Down Disable

Time Delay

TPDD

—2.5

—

µs

VDD = 5V

PD1:PD0

→ ‘00’ (from ‘01’, ‘10’, or ‘11’),

from falling edge SCL at end of ACK bit.

—5

—

µs

VDD = 3V

PD1:PD0

→ ‘00’ (from ‘01’, ‘10’, or ‘11’),

from falling edge SCL at end of ACK bit.

Power Down Enable

Time Delay

TPDE

—

10.5

—

µs

PD1:PD0

→ ‘01’, ‘10’, or ‘11’ (from ‘00’),

from falling edge SCL at end of ACK bit.

VDD

SDA

tPORD

tBORD

VOUT

SCL

VIH

VPOR (VBOR)

VOUT pulled down by internal

500 k

Ω (typical) resistor

I2C Interface is operational

SDA

SCL

ACK

Stop

Start

ACK

VOUT

tPDE

tPDD

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