tcn75a Microchip Technology Inc., tcn75a Datasheet - Page 15

• Manufacturer Part Number: tcn75a
• Description: 2-wire Serial Temperature Sensor
• Manufacturer: Microchip Technology Inc.

5.3.2
The TCN75A has an 8-bit read/write Configuration
register that allows the user to select the different
features. These features include shutdown, ALERT
output select as comparator or interrupt output, ALERT
output polarity, fault queue cycle, temperature
measurement resolution and One-shot mode (single
conversion while in shutdown). These functions are
described in detail in the following sections.
REGISTER 5-3:
© 2006 Microchip Technology Inc.
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7
bit 5-6
bit 3-4
bit 2
bit 1
bit 0
One-Shot
R/W-0
SENSOR CONFIGURATION
REGISTER (CONFIG)
ONE-SHOT bit
1 = Enabled
0 = Disabled (Power-up default)
ΣΔ ADC RESOLUTION bits
00 = 9 bit or 0.5°C (Power-up default)
01 = 10 bit or 0.25°C
10 = 11 bit or 0.125°C
11 = 12 bit or 0.0625°C
FAULT QUEUE bits
00 = 1 (Power-up default)
01 = 2
10 = 4
11 = 6
ALERT POLARITY bit
1 = Active-high
0 = Active-low (Power-up default)
COMP/INT bit
1 = Interrupt mode
0 = Comparator mode (Power-up default)
SHUTDOWN bit
1 = Enable
0 = Disable (Power-up default)
R/W-0
CONFIGURATION REGISTER (CONFIG) - ADDRESS <
Resolution
W = Writable bit
‘1’ = Bit is set
R/W-0
R/W-0
Fault Queue
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
R/W-0
Polarity
ALERT
R/W-0
0000 0001
x = Bit is unknown
COMP/INT
R/W-0
TCN75A
>b
DS21935C-page 15
Shutdown
R/W-0
bit 0