TMP86PM29BFG Datasheet, PDF (160/204 Pages) Toshiba Semiconductor – 8 Bit Microcontroller

13. 10-bit AD Converter (ADC)
13.3 Function
TMP86PM29BFG
ADCCR1<AMD>
“11”
ADCCR1<ADRS>
AD conversion start
Conversion operation
1st conversion
result
2nd conversion result 3rd conversion result
“00”
AD convert operation suspended.
Conversion result is not stored.
ADCDR1,ADCDR2
Indeterminate
1st conversion result 2nd conversion result 3rd conversion result
ADCDR2<EOCF>
INTADC interrupt request
EOCF cleared by reading
conversion result
ADCDR1
ADCDR2
Conversion
result read
Conversion
result read
Conversion
result read
Conversion
result read
Conversion
result read
Conversion
result read
Figure 13-3 Repeat Mode
13.3.3 Register Setting
1. Set up the AD converter control register 1 (ADCCR1) as follows:
• Choose the channel to AD convert using AD input channel select (SAIN).
• Specify analog input enable for analog input control (AINDS).
• Specify AMD for the AD converter control operation mode (software or repeat mode).
2. Set up the AD converter control register 2 (ADCCR2) as follows:
• Set the AD conversion time using AD conversion time (ACK). For details on how to set the con-
version time, refer to Figure 13-1 and AD converter control register 2.
• Choose IREFON for DA converter control.
3. After setting up (1) and (2) above, set AD conversion start (ADRS) of AD converter control register 1
(ADCCR1) to “1”. If software start mode has been selected, AD conversion starts immediately.
4. After an elapse of the specified AD conversion time, the AD converted value is stored in AD con-
verted value register 1 (ADCDR1) and the AD conversion finished flag (EOCF) of AD converted
value register 2 (ADCDR2) is set to “1”, upon which time AD conversion interrupt INTADC is gener-
ated.
5. EOCF is cleared to “0” by a read of the conversion result. However, if reconverted before a register
read, although EOCF is cleared the previous conversion result is retained until the next conversion is
completed.
Page 146