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ST7MC1 Fiches technique(PDF) 233 Page - STMicroelectronics

No de pièce ST7MC1
Description  8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, BRUSHLESS MOTOR CONTROL, FIVE TIMERS, SPI, LINSCI
PDF  308 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

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OP-AMP MODULE (Cont’d)
10.7.5 Op-Amp Programming
The flowchart for Op-Amp operation is shown in
Figure 126
Figure 126. Normal Op-Amp Operation
Power On Reset
OACSR = 0000 0000
Write OACSR = x0010xx0
Wait for Amplifier to wake up (Twakeup)
Compensation Offset ?
Average Compensation ?
Write OACSR = x101 0xx0
Wait for 1536*TCPU cycles
Read CMPOVR = 1
Write OACSR = x0p1 pxx0
p : same as before
Write OACSR = x111 0xx0
Wait for 24576*TCPU cycles
Read CMPOVR = 1
Need
closed loop gain > 20dB @ 100kHz ?
Write OACSR = x1p1 1xx0
p : same as before
Op-Amp useable
Re-compensate
Offset ?
External components always connected
No
Yes
Yes
No
Yes
No
No
Yes
#OFFCMP & AVGCMP
should be set simultenaously
#The HIGHGAIN bit can also be written in step (1) or (2)
(1)
(2b)
(4)
(3) #
(2a)



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