st72324bk STMicroelectronics, st72324bk Datasheet - Page 103

• Manufacturer Part Number: st72324bk
• Description: 3 V/5 V Range 8-bit Mcu With 4/8 Kbyte Rom, 10-bit Adc, Four Timers And Spi
• Manufacturer: STMicroelectronics

ST72323 ST72323L
9.5.4
9.5.5
9.5.6
Changing the conversion channel
The application can change channels during conversion. When software modifies the
CH[3:0] bits in the ADCCSR register, the current conversion is stopped, the EOC bit is
cleared, and the A/D converter starts converting the newly selected channel.
Low-power modes
Note that the A/D converter may be disabled by resetting the ADON bit. This feature allows
reduced power consumption when no conversion is needed.
Table 48.
Interrupts
None.
Register description
Control/status register (ADCCSR)
Reset value: 0000 0000 (00h)
Bit 7 = EOC End of Conversion
Bit 6 = SPEED ADC clock selection
Bit 5 = ADON A/D Converter on
Read only
R
Mode
Wait
Halt
EOC
This bit is set by hardware. It is cleared by hardware when software reads the ADCDRH
register or writes to any bit of the ADCCSR register.
0: Conversion is not complete
1: Conversion complete
This bit is set and cleared by software. It is used together with the MAX_SPEED bit to
select the ADC frequency. Refer to
This bit is set and cleared by software.
0: Disable ADC and stop conversion
1: Enable ADC and start conversion
7
No effect on A/D converter
A/D Converter disabled.
After wakeup from Halt mode, the A/D converter requires a stabilization time t
Electrical Characteristics) before accurate conversions can be performed.
Low-power modes
SPEED
ADON
MAX_SPEED
Table 49
Description
Read/write
CH3
CH2
On-chip peripherals
CH1
STAB
(see
CH0
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0