Hitachi 902 - Configuration of Temperature ADC Hardware

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7.2.3 Configuration of Temperature ADC Hardware
Configuration of Temperature ADC Hardware
(1) The ADC controller converts the analog values of the temperature sensor, reference
voltage 2 V and reference voltage 6 V to the digital ones upon receiving the instruction
from the application via the driver and stores the digital values into the DPRAM.
The values are taken in the application via the driver.
(2) The application accesses to the driver, but does not control the ADC directly.
ADC Setting Parameters
• Integration = 32 times
• Software trigger interval = 30 msec
Thermal sensor
(feeler)
Amplifier
Reference voltage 2 V
Reference voltage 6 V
MPX
Buffer amplifier
ADC controller
ADC control
ADC DPRAM
Driver
(software)
Application
(software)