tmp88ch40img TOSHIBA Semiconductor CORPORATION, tmp88ch40img Datasheet - Page 130

• Manufacturer Part Number: tmp88ch40img
• Description: 8 Bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

14.2 Register configuration
14. 10-bit AD Converter (ADC)
14.2 Register configuration
AD Converter Control Register 1
ADCCRA
(0026H)
The AD converter consists of the following four registers:
Note 1: Select analog input channel during AD converter stops (ADCDRL<ADBF> = "0").
Note 2: When the analog input channel is all use disabling, the ADCCRA<AINDS> should be set to "1".
Note 3: During conversion, Do not perform port output instruction to maintain a precision for all of the pins because analog input
Note 4: The ADCCRA<ADRS> is automatically cleared to "0" after starting conversion.
Note 5: Do not set ADCCRA<ADRS> newly again during AD conversion. Before setting ADCCRA<ADRS> newly again, check
Note 6: After RESET, ADCCRA<SAIN> is initialized Reserved setting. Therfore, set the appropriate analog input channel to ADC-
Note 7: After ADCCRA is set to 00H, AD conversion can not be started for four cycles. Thus, four NOPs must be inserted before
1. AD converter control register 1 (ADCCRA)
2. AD converter control register 2 (ADCCRB)
3. AD converted value register 1 (ADCDRH)
4. AD converted value register 2 (ADCDRL)
port use as general input port. And for port near to analog input, Do not input intense signaling of change.
ADCDRL<EOCF> to see that the conversion is completed or wait until the interrupt signal (INTADC) is generated (e.g.,
interrupt handling routine).
CRA<SAIN> when use AD converter.
setting the ADCCRA<ADRS>.
form AD conversion and controls the AD converter as it starts operating.
resistor network).
ADRS
This register selects the analog channels and operation mode (Software start or repeat) in which to per-
This register selects the AD conversion time and controls the connection of the DA converter (Ladder
This register used to store the digital value after being converted by the AD converter.
This register monitors the operating status of the AD converter.
AINDS
ADRS
7
AMD
SAIN
AD conversion start
AD operating mode
Analog input control
Analog input channel select
6
AMD
5
AINDS
4
0:
1:
00:
01:
10:
11:
0:
1:
0000:
0001:
0010:
0011:
0100:
0101:
0110:
0111:
1000:
1001:
1010:
1011:
1100:
1101:
1110:
1111:
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AD conversion start
AD operation disable
Software start mode
Reserved
Repeat mode
Analog input enable
Analog input disable
AIN0
AIN1
AIN2
AIN3
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
-
2
SAIN
1
0
(Initial value: 0001 0000)
TMP88CH40IMG
R/W