参数资料
型号: L6460TR
厂商: STMICROELECTRONICS
元件分类: 运动控制电子
英文描述: STEPPER MOTOR CONTROLLER, PQFP64
封装: 10 X 10 MM, 1 MM HEIGHT, ROHS COMPLIANT, TQFP-64
文件页数: 122/139页
文件大小: 3837K
代理商: L6460TR
L6460
AD converter
Doc ID 17713 Rev 1
83/139
A conversion on channel 1 can be triggered by writing a logic ‘1’ in the A2DTrig1 bit in the
A2DConfigX register and a conversion on channel 2 can be triggered writing a logic ‘1’ in the
A2DTrig2 bit in the same register. While a request on a channel is pending but not yet
completed L6460 will force to logic ‘0’ the corresponding A2DdoneX bit in the A2DResultX
registers and L6460 will not accept other conversion request on that channel.
Continuous conversion on one channel can be accomplished by setting to logic ‘1’ the
A2DcontinuousX bit in the A2DConfigX register. When A2DcontinuousX bit is set, other
conversions can be accomplished on the other channel; these conversions will be inserted
between two conversions of the other channel and the end of the conversion will be signaled
using A2DdoneX bit. Of course when a channel is in continuous mode its sample time and
channel address cannot be changed.
Continuous conversions on both 2 channels can be also accomplished by setting to logic ‘1’
the A2Dcontinuous1 and A2Dcontinuous2 bits; the conversions are made in sequence.
Table 32.
ADC sample times when working as a 8-bit ADC
A2DSampleX[2:0] (binary)
Sample time
Typ
Unit
000
16*Tosc
s
001
32*Tosc
s
010
64*Tosc
s
011
128*Tosc
s
100
256*Tosc
s
101
512*Tosc
s
110
1024*Tosc
s
111
2048*Tosc
s
Table 33.
ADC sample time when working as a 9-bit ADC
A2DSampleX[2:0] (binary)
Sample time
Typ
Unit
000
32*Tosc
s
001
64*Tosc
s
010
128*Tosc
s
011
256*Tosc
s
100
512*Tosc
s
101
1024*Tosc
s
110
2048*Tosc
s
111
4096*Tosc
s
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