MCP3424EV Microchip Technology, MCP3424EV Datasheet - Page 18

• Manufacturer Part Number: MCP3424EV
• Description: EVALUATION BOARD FOR MCP3424
• Manufacturer: Microchip Technology

Specifications of MCP3424EV

• Number Of Adc's: 1
• Number Of Bits: 18
• Sampling Rate (per Second): 3.75 ~ 240
• Data Interface: I²C
• Inputs Per Adc: 4 Differential
• Input Range: ±2.048 V
• Power (typ) @ Conditions: 135µA @ 240sps
• Voltage Supply Source: Single Supply
• Operating Temperature: -55°C ~ 125°C
• Utilized Ic / Part: MCP3424
• Processor To Be Evaluated: MCP3424
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

MCP3424
TABLE 5-3:
FIGURE 5-3:
DS22088A-page 18
Note 1:
SCL
SDA
A2
0
0
0
1
1
1
0
1
0
Start Bit by
Master
Address Bits
Note:
I
2
C Device
2:
3:
A1
0
0
1
0
0
1
1
1
0
Float: (a) Leave pin without connecting to
anything (left floating), or (b) apply
Addr_Float voltage.
The user can tie the pins to V
- Tie to V
- Tie to V
See Addr_Low, Addr_High, and
Addr_Float parameters in Electrical
Characteristics Table.
– Stop bit can be issued any time during writing.
– MCP3424 device code is 1101 (programmed at the factory).
– Address Bits A2- A0 are user programmable and determined by the logic status of the two external
A0
address selection pins (Adr1 and Adr0 pins)
0
1
0
0
1
0
1
1
0
ADDRESS BITS VS. ADDRESS
SELECTION PINS
1
1
SS
DD
0 (Addr_Low)
0 (Addr_Low)
0 (Addr_Low)
1 (Addr_High)
1 (Addr_High)
1 (Addr_High)
Float
Float
Float
Timing Diagram For Writing To The MCP3424.
1
for Addr_Low
for Addr_High
Logic Status of Address
MCP3424 Address Byte
Adr0 Pin
with Write command
0
Selection Pins
1st Byte:
1
A2 A1 A0
0 (Addr_Low)
Float
1 (Addr_High)
0 (Addr_Low)
Float
1 (Addr_High)
0 (Addr_Low)
1 (Addr_High)
Float
SS
R/W
Adr1 Pin
or V
DD
:
MCP3424
ACK by
9
1
C1 C0
5.3.3
When the Master sends an address byte with the R/W
bit low (R/W = 0), the MCP3424 expects one
configuration byte following the address. Any byte sent
after this second byte will be ignored. The user can
change the operating mode of the device by writing the
configuration register bits.
If the device receives a write command with a new
configuration setting, the device immediately begins a
new conversion and updates the conversion data.
Configuration Byte
RDY
(a) One-Shot Mode: 1
(b) Continuous Mode: not effected
O/C
2nd Byte:
WRITING A CONFIGURATION BYTE
TO THE DEVICE
S1 S0 G1 G0
MCP3424
ACK by
© 2008 Microchip Technology Inc.
9
Stop Bit by
Master