ST72321R6-Auto STMicroelectronics, ST72321R6-Auto Datasheet - Page 174

• Manufacturer Part Number: ST72321R6-Auto
• Description: 8-bit MCU for automotive with 32 Kbyte Flash, 10-bit ADC, timers, SPI, SCI and I2C interfaces
• Manufacturer: STMicroelectronics

Specifications of ST72321R6-Auto

• Hdflash Endurance: 100 cycles, data retention 20 years
• Clock Sources: crystal/ceramic resonator oscillators, internal RC oscillator and bypass for external clock
• 4 Power Saving Modes: Halt, Active Halt, Wait and Slow

10-bit A/D converter (ADC)
17.3.3
17.4
Note:
17.5
17.6
17.6.1
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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
The A/D converter may be disabled by resetting the ADON bit. This feature allows reduced
power consumption when no conversion is needed and between single shot conversions.
Table 91.
Interrupts
None.
ADC registers
Control/status register (ADCCSR)
Table 92.
ADCCSR
Bit
7
6
Mode
Wait
Halt
EOC
RO
7
SPEED
Name
EOC
No effect on A/D converter
A/D converter disabled.
After wake-up from Halt mode, the A/D converter requires a stabilization time t
Section 19: Electrical
Effect of low power modes on ADC
ADCCSR register description
SPEED
End of Conversion
ADC clock selection
RW
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.
0: f
1: f
6
ADC
ADC
= f
= f
CPU
CPU
ADON
RW
5
/4
/2
Doc ID 13829 Rev 1
characteristics) before accurate conversions can be performed.
Reserved
4
-
Effect
Function
3
2
Reset value: 0000 0000 (00h)
CH[3:0]
RW
ST72321xx-Auto
1
STAB
0
(see