tmp88ch40mg TOSHIBA Semiconductor CORPORATION, tmp88ch40mg Datasheet - Page 134

• Manufacturer Part Number: tmp88ch40mg
• Description: 8 Bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

14.3 Function
ADCCRA<AMD>
ADCCRA<ADRS>
Conversion operation
ADCDRH,ADCDRL
ADCDRL<EOCF>
INTADC interrupt request
ADCDRH
ADCDRL
14.3.3 Register Setting
1. Set up the AD converter control register 1 (ADCCRA) as follows:
2. Set up the AD converter control register 2 (ADCCRB) as follows:
3. After setting up (1) and (2) above, set AD conversion start (ADRS) of AD converter control register 1
4. After an elapse of the specified AD conversion time, the AD converted value is stored in AD con-
5. EOCF is cleared to “0” by a read of the conversion result. However, if reconverted before a register
(ADCCRA) to “1”. If software start mode has been selected, AD conversion starts immediately.
verted value register 1 (ADCDRH) and the AD conversion finished flag (EOCF) of AD converted
value register 2 (ADCDRL) is set to “1”, upon which time AD conversion interrupt INTADC is gen-
erated.
read, although EOCF is cleared the previous conversion result is retained until the next conversion is
completed.
• 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).
• Set the AD conversion time using AD conversion time (ACK). For details on how to set the con-
• Choose IREFON for DA converter control.
version time, refer to Figure 14-1, Figure 14-2 and AD converter control register 2.
Indeterminate
AD conversion start
1st conversion
result
Figure 14-3 Repeat Mode
2nd conversion result
1st conversion result
Conversion
result read
Conversion
result read
“11”
Page 126
3rd conversion result
2nd conversion result
Conversion
result read
Conversion
result read
3rd conversion result
Conversion
result read
AD convert operation suspended.
Conversion result is not stored.
Conversion
result read
EOCF cleared by reading
conversion result
“00”
TMP88CH40MG