ST7MC2M9 STMicroelectronics, ST7MC2M9 Datasheet - Page 234

• Manufacturer Part Number: ST7MC2M9
• Description: 8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC,BRUSHLESS MOTOR CONTROL, 5 TIMERS, SPI, LINSCI(TM)
• Manufacturer: STMicroelectronics

Specifications of ST7MC2M9

• Hdflash Endurance: 100 cycles, data retention
• Clock Sources: crystal/ceramic resonator oscillators and by-pass for external clock, clock security system.
• Four Power Saving Modes: Halt, Active-Halt, Wait and Slow
• Main Clock Controller With: Real time base, Beep and Clock-out capabilities
• Two 16-bit Timers With: 2 input captures, 2 output compares, external clock input, PWM and pulse generator modes
• 8-bit Pwm Auto-reload Timer With: 2 input captures, 4 PWM outputs, output compare and time base interrupt, external clock with event detector

ST7MC1xx/ST7MC2xx
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
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(4)
Write OACSR = x0p1 pxx0
p : same as before
Yes
#OFFCMP & AVGCMP
should be set simultenaously
(2a)
Write OACSR = x111 0xx0
Wait for 24576*TCPU cycles
Read CMPOVR = 1
Re-compensate
Offset ?
(1)
No
Yes
closed loop gain > 20dB @ 100kHz ?
Write OACSR = x0010xx0
Wait for Amplifier to wake up (T
Average Compensation ?
Compensation Offset ?
Power On Reset
OACSR = 0000 0000
Op-Amp useable
Need
Yes
No
#The HIGHGAIN bit can also be written in step (1) or (2)
(2b)
Write OACSR = x101 0xx0
Wait for 1536*TCPU cycles
Read CMPOVR = 1
wakeup
Write OACSR = x1p1 1xx0
p : same as before
External components always connected
No
No
)
Yes
(3) #