Toshiba H1 Series, TLCS-900, TMP92CZ26AXBG TMP92CZ26A , 92CZ26A-606, 3.23.2 Operation

TMP92CZ26A
92CZ26A-606
3.23.2 Operation
3.23.2.1 Analog Reference Voltages
The VREFH and V REFL pins provide the analog reference voltages for the ADC.
3.23.2.2 Analog Input Channel(s) selection
The Anal og input channels used for AD conversion are selected as foll ows:
(1) Normal AD conversion
• Analog Input Channel Fixed mode (ADMOD1<SCAN> = “0”)
Setting ADMOD1< ADCH2:0> selects one of th e input pins AN0 to AN5 as the in put
channel.
• Analog Input Channel Sca n Mode (ADMOD1<SCAN> = “1”)
Setting ADMOD1<AD CH2:0> selects one of the six scan modes.
(2) High-priority AD conversion
Setting AD MOD3<HADCH2:0> selects one of the eight input pins AN0 ∼ AN5.
On a Reset, ADMOD1<SCAN> is set to “0”, and ADMOD1<ADCH2:0> is initialized
to “000”. Thus pin AN0 is select ed as the fixed input channel. Pins that are not used as
analog input channels can be used as standard input port pins.
If a high-priority AD conversion is triggered while a normal AD conversion is in
progress, the normal AD conversion sequence is suspended after converting data for
the current channel, to perform a high-priority AD conversion. After a high-priority
AD conversion is per formed, the norma l AD convers ion seque nce i s resumed wi th that
channel.