TCN75-5.0MOAG Microchip Technology, TCN75-5.0MOAG Datasheet - Page 8

• Manufacturer Part Number: TCN75-5.0MOAG
• Description: IC TEMP SENSOR SRL 5.0V 8SOIC
• Manufacturer: Microchip Technology

Specifications of TCN75-5.0MOAG

• Function: Temp Monitoring System (Sensor)
• Topology: ADC (Sigma Delta), Register Bank
• Sensor Type: Internal
• Sensing Temperature: -55°C ~ 125°C
• Output Type: 2-Wire Serial
• Output Alarm: Yes
• Output Fan: No
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -55°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Temperature Threshold: Programmable
• Full Temp Accuracy: 3 C
• Digital Output - Bus Interface: 2-Wire
• Digital Output - Number Of Bits: 9 bit
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.7 V
• Description/function: 2-Wire Serial Input/Output - Thermal Monitors
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 55 C
• Supply Current: 1 mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TCN75
4.3.1
Immediately following the START condition, the host
must next transmit the address byte to the TCN75. The
four Most Significant bits of the Address Byte (A6, A5,
A4, A3) are fixed to 1001(B). The states of A2, A1 and
A0 in the serial bit stream must match the states of the
A2, A1 and A0 address inputs for the TCN75 to
respond with an Acknowledge (indicating the TCN75 is
on the bus and ready to accept data). The eighth bit in
the Address Byte is a Read/Write Bit. This bit is a ‘1’ for
a read operation or ‘0’ for a write operation.
4.3.2
Acknowledge (ACK) provides a positive handshake
between the host and the TCN75. The host releases
SDA after transmitting eight bits then generates a ninth
clock cycle to allow the TCN75 to pull the SDA line
LOW to acknowledge that it successfully received the
previous eight bits of data or address.
4.3.3
After a successful ACK of the address byte, the host
must next transmit the data byte to be written or clock
out the data to be read. (See the appropriate timing
diagrams.) ACK will be generated after a successful
write of a data byte into the TCN75.
DS21490B-page 8
ADDRESS BYTE
ACKNOWLEDGE (ACK)
DATA BYTE
4.3.4
Communications must be terminated by a STOP
condition (a LOW to HIGH transition of SDA while SCL
is HIGH). The STOP condition must be communicated
by the transmitter to the TCN75.
4.3.5
To minimize temperature measurement error, the
TCN75-3.3MOA and TCN75-3.3MUA are factory cali-
brated at a supply voltage of 3.3V ±5% and the TCN75-
5.0MOA and TCN75-5.0MUA are factory calibrated at
a supply voltage of 5V ±5%. Either device is fully
operational over the power supply voltage range of
2.7V to 5.5V, but with a lower measurement accuracy.
The typical value of this power supply-related error is
±2°C.
STOP CONDITION (STOP)
POWER SUPPLY
©
2002 Microchip Technology Inc.