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MCP4726 датащи(PDF) 8 Page - Microchip Technology

номер детали MCP4726
подробное описание детали  8-/10-/12-Bit Voltage Output Digital-to-Analog Converter with EEPROM and I2C Interface
PDF  86 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP4726 датащи(HTML) 8 Page - Microchip Technology

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MCP4706/4716/4726
DS22272A-page 8
© 2011 Microchip Technology Inc.
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
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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