
ML610Q421/ML610Q422/ML610421 User’s Manual
Chapter 25 Successive Approximation Type A/D Converter
25 – 9
25.3 Description of Operation
25.3.1 Settings of A/D Conversion Channels
According to the setting of SA-ADC mode register 0 (SADMOD0), A/D conversion is performed as shown below and
A/D conversion results are stored in the SA-ADC result register.
SA-ADC
mode register 0
SA-ADC result register
Analog input
SACH0/1
0/1
SACH0
0
SADR0
SACH1
1
SADR1
AIN1 input
SACH0
1
SADR0
AIN0 input
SACH1
0
SADR1
SACH0
1
SADR0
AIN0 input
SACH1
1
SADR1
AIN1 input
The values of the result register for the sections with a slash mark remain unchanged.
Do not start A/D conversion when bits 1 (SACH1) or 0 (SACH0) of SA-ADC mode register 0 (SADMOD0) is “0”. If
A/D conversion is started, the A/D conversion circuit is set to ON. However, as A/D conversion is not performed, the
SA-ADC result register is not updated, an A/D conversion termination interrupt is not generated, A/D conversion does
not terminate automatically, and bit 0 (SARUN) of the SA-ADC control register (SADCON1) remains “1”.
Figure 25-2 A/D conversion pins and conversion range
12-bit
successive
approximation
type A/D
converter
AV
SS
V
REF
AV
DD
AIN
x
Direct input
V
ADIN
A/D conversion input voltage
V
ADIN
variation range
V
REF
AV
SS
Содержание ML610421
Страница 1: ...ML610Q421 ML610Q422 ML610421 User s Manual Issue Date Feb 9 2015 FEUL610Q421 06...
Страница 15: ...Chapter 1 Overview...
Страница 44: ...Chapter 2 CPU and Memory Space...
Страница 49: ...Chapter 3 Reset Function...
Страница 53: ...Chapter 4 MCU Control Function...
Страница 69: ...Chapter 5 Interrupts INTs...
Страница 93: ...Chapter 6 Clock Generation Circuit...
Страница 110: ...Chapter 7 Time Base Counter...
Страница 121: ...Chapter 8 Capture...
Страница 129: ...Chapter 9 1 kHz Timer 1kHzTM...
Страница 135: ...Chapter 10 Timers...
Страница 160: ...Chapter 11 PWM...
Страница 172: ...Chapter 12 Watchdog Timer...
Страница 180: ...Chapter 13 Synchronous Serial Port...
Страница 195: ...Chapter 14 UART...
Страница 216: ...Chapter 15 I2 C Bus Interface...
Страница 231: ...Chapter 16 NMI Pin...
Страница 237: ...Chapter 17 Port 0...
Страница 246: ...Chapter 18 Port 1...
Страница 252: ...Chapter 19 Port 2...
Страница 259: ...Chapter 20 Port 3...
Страница 270: ...Chapter 21 Port 4...
Страница 282: ...Chapter 22 Port A...
Страница 290: ...Chapter 23 Melody Driver...
Страница 304: ...Chapter 24 RC Oscillation Type A D Converter...
Страница 327: ...Chapter 25 Successive Approximation Type A D Converter...
Страница 338: ...Chapter 26 LCD Drivers...
Страница 371: ...Chapter 27 Battery Level Detector...
Страница 378: ...Chapter 28 Power Supply Circuit...
Страница 381: ...Chapter 29 On Chip Debug Function...
Страница 384: ...Appendixes...
Страница 435: ...Revision History...