MCP9804-E/MS Microchip Technology, MCP9804-E/MS Datasheet - Page 29

• Manufacturer Part Number: MCP9804-E/MS
• Description: IC TEMP SENSOR I2C 2.7V 8MSOP
• Manufacturer: Microchip Technology

Specifications of MCP9804-E/MS

• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Function: Temp Monitoring System (Sensor)
• Topology: ADC (Sigma Delta), Register Bank
• Sensor Type: Internal
• Sensing Temperature: -40°C ~ 125°C
• Output Type: I²C™/SMBus™
• Output Alarm: No
• Output Fan: No
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Temperature Threshold: + 150 C
• Full Temp Accuracy: +/- 0.25 %
• Digital Output - Bus Interface: 2-Wire, I2C
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.7 V
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Supply Current: 200 uA
• Ic Output Type: Digital
• Sensing Accuracy Range: ± 0.25°C
• Temperature Sensing Range: -40°C To +125°C
• Supply Voltage Range: 2.7V To 5.5V
• Sensor Case Style: MSOP
• No. Of Pins: 8
• Rohs Compliant: Yes
• Supply Voltage Min: 2.7V
• Leaded Process Compatible: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

5.1.6
This register allows the user to change the sensor
resolution (see Section 5.2.4). The POR default
resolution is 0.25°C. The selected resolution is also
reflected in the Capability register (see
REGISTER 5-7:
FIGURE 5-9:
Section 4.0).
© 2009 Microchip Technology Inc.
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7-3
bit 2-0
SDA
SCL
U-0
—
RESOLUTION REGISTER
S
Unimplemented: Read as ‘0’
Resolution:
00 = LSB = 0.5°C (t
01 = LSB = 0.25°C (t
10 = LSB = 0.125°C (t
11 = LSB = 0.0625°C (power up default, t
1
0
U-0
—
2
0
RESOLUTION → ADDRESS
Timing Diagram for Changing T
Address Byte
3
1
4
1
W = Writable bit
‘1’ = Bit is set
5
A
2
A
6
1
U-0
—
CONV
CONV
7
A
0
Register
CONV
MCP9804
W
8
= 30 ms typical)
= 65 ms typical)
A
C
K
= 130 ms typical)
5-2).
1
0
Resolution Pointer
U-0
—
2
0
3
0
‘0000 1000’b
4
A
0
CONV
‘0’ = Bit is cleared
U = Unimplemented bit, read as ‘0’
Resolution to 0.0625°C <0000 0011>b (See
5
1
U-0
—
= 250 ms typical)
6
0
7
0
MCP9804
8
0
A
C
K
1
0
U-0
—
2
0
3
0
Data
4
0
x = Bit is unknown
5
0
R/W-1
MCP9804
6
0
7
Resolution
1
MCP9804
DS22203B-page 29
8
1
A
C
K
R/W-1
P
bit 0