MCP3423-E/UN Microchip Technology, MCP3423-E/UN Datasheet - Page 26

• Manufacturer Part Number: MCP3423-E/UN
• Description: IC ADC 18BIT 3.75SPS 2CH 10-MSOP
• Manufacturer: Microchip Technology

Specifications of MCP3423-E/UN

• Data Interface: I²C, Serial
• Number Of Bits: 18
• Sampling Rate (per Second): 3.75
• Number Of Converters: 1
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 10-TFSOP (0.118", 3.00mm Width)
• Resolution (bits): 18bit
• Sampling Rate: 3.75SPS
• Input Channel Type: Differential
• Supply Voltage Range - Analog: 2.7V To 5.5V
• Supply Current: 145µA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: MCP3423EV - BOARD EVAL 18BIT 2CH ADC MCP3423
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

MCP3422/3/4
5.6.5
The Master (microcontroller) and the slave (MCP3422/
3/4) use an acknowledge pulse as a hand shake of
communication for each byte. The ninth clock pulse of
each byte is used for the acknowledgement. The clock
pulse
(microcontroller) and the acknowledgement is issued
by the receiving device of the byte (Note: The
transmitting device must release the SDA line during
the acknowledge pulse.). The acknowledgement is
achieved by pulling-down the SDA line “LOW” during
the 9th clock pulse by the receiving device.
FIGURE 5-7:
DS22088C-page 26
SDA
SCL
is
(A)
ACKNOWLEDGE AND NON-
ACKNOWLEDGE
always
CONDITION
START
(B)
Data Transfer Sequence on I
provided
by
ACKNOWLEDGE
ADDRESS OR
the
VALID
(D)
Master
2
C Serial Bus.
TO CHANGE
ALLOWED
DATA
During reads, the Master (microcontroller) can
terminate the current read operation by not providing
an acknowledge bit (not Acknowledge (NAK)) on the
last byte. In this case, the MCP3422/3/4 devices
release
(microcontroller) to generate a STOP or repeated
START condition.
The non-acknowledgement (NAK) is issued by
providing the SDA line to “HIGH” during the 9th clock
pulse.
the
(D)
SDA
line
© 2009 Microchip Technology Inc.
to
allow
CONDITION
the
STOP
(C)
Master
(A)