MCP3422A0-E/SN Microchip Technology, MCP3422A0-E/SN Datasheet - Page 26

• Manufacturer Part Number: MCP3422A0-E/SN
• Description: IC ADC 18BIT3.75SPS 2CH 8-SOIC
• Manufacturer: Microchip Technology

Specifications of MCP3422A0-E/SN

• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Number Of Bits: 18
• Sampling Rate (per Second): 3.75
• Data Interface: I²C, Serial
• Number Of Converters: 1
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Architecture: Delta-Sigma
• Conversion Rate: 0.00375 KSPs
• Input Type: Voltage
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: MCP3422EV - BOARD EVAL MCP3422 PICKIT SERIAL
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

MCP3422/3/4
5.6.5
The
(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 is always provided by the Master
(microcontroller) and the acknowledgement is issued
by the receiving device of the byte (Note: The transmit-
ting device must release the SDA line during the
acknowledge
achieved by pulling-down the SDA line “LOW” during
the 9th clock pulse by the receiving device.
FIGURE 5-7:
DS22088B-page 26
SDA
SCL
Master
(A)
ACKNOWLEDGE AND
NON-ACKNOWLEDGE
CONDITION
pulse.).
(microcontroller)
START
(B)
Data Transfer Sequence on I
The
acknowledgement
and
ACKNOWLEDGE
ADDRESS OR
the
VALID
(D)
slave
is
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 the SDA line to allow the Master (microcontrol-
ler) to generate a STOP or repeated START condition.
The non-acknowledgement (NAK) is issued by provid-
ing the SDA line to “HIGH” during the 9th clock pulse.
(D)
© 2008 Microchip Technology Inc.
CONDITION
STOP
(C)
(A)