CY8C25122 Cypress Semiconductor, CY8C25122 Datasheet - Page 106
CY8C25122
Manufacturer Part Number
CY8C25122
Description
8-Bit Programmable System-on-Chip (PSoC) Microcontrollers
Manufacturer
Cypress Semiconductor
Datasheet
1.CY8C25122.pdf
(148 pages)
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Cypress MicroSystems CY8C25122/CY8C26233/CY8C26443/CY8C26643 Family Data Sheet
10.16 Temperature Sensing Capability
A temperature-sensitive voltage derived from the Band
Gap sensing on the die is buffered and available as an
analog input into the Analog Switch Cap Type A Block
ASA21. Temperature sensing allows protection of device
operating ranges for fail-safe applications. Temperature
sensing combined with a long sleep timer interval (to
allow the die to approximate ambient temperature) can
give an approximate ambient temperature for data acqui-
sition and battery charging applications. The user may
also calibrate the internal temperature rise based on a
known current consumption.
The temperature sensor input to the ASA21 block is
labeled VTemp, and its associated ground reference is
labeled TRefGND (see
FigureTitle
22,
FigureTitle
24).
106
Document #: 38-12010 CY Rev. ** CMS Rev. 3.20
September 5, 2002
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