MCP3422EV Microchip Technology, MCP3422EV Datasheet - Page 26

• Manufacturer Part Number: MCP3422EV
• Description: BOARD EVAL MCP3422 PICKIT SERIAL
• Manufacturer: Microchip Technology
• Series: PICkit™r

Specifications of MCP3422EV

• Number Of Adc's: 2
• Number Of Bits: 18
• Sampling Rate (per Second): 3.75
• Data Interface: Serial
• Inputs Per Adc: 1 Differential
• Input Range: ±2.048 V
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 125°C
• Utilized Ic / Part: MCP3422
• Silicon Manufacturer: Microchip
• Application Sub Type: ADC
• Kit Application Type: Data Converter
• Silicon Core Number: MCP3422
• Kit Contents: Board, Software
• Lead Free Status / RoHS Status: 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)