ST7MC2R6 STMicroelectronics, ST7MC2R6 Datasheet - Page 203
ST7MC2R6
Manufacturer Part Number
ST7MC2R6
Description
8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC,BRUSHLESS MOTOR CONTROL, 5 TIMERS, SPI, LINSCI(TM)
Manufacturer
STMicroelectronics
Datasheet
1.ST7MC1K4.pdf
(309 pages)
Specifications of ST7MC2R6
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
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MOTOR CONTROLLER (Cont’d)
■
In this operating mode, the PWM Counter counts
up to the value loaded in the 12-bit Compare Reg-
ister. Then the PWM Counter is cleared and it re-
starts counting up.
The PWM signals are set to ‘0’ when the PWM
Counter reaches, in up-counting, the correspond-
ing 13-bit Compare register value and they are set
to ‘1’ when the PWM Counter is cleared.
Figure 120. Edge-aligned PWM Waveforms (Compare 0 Register = 8)
Edge-aligned Mode (CMS bit = 0)
1
2
3
4
‘1’
‘0’
1 Compare Register value = 4
2 Compare Register value = 8
3 Compare Register value > 8
4 Compare Register value = 0
0
1
2
3
4
If the 13-bit Compare register value is greater than
the extended Compare 0 register (the 13
set to ‘0’), the corresponding PWM output signal is
held at ‘1’.
If the 13-bit Compare register value = 0, the corre-
sponding PWM output signal is held at ‘0’.
Figure 120
forms in an example where the Compare 0 register
value = 8.
5
6
shows some edge-aligned PWM wave-
7
ST7MC1xx/ST7MC2xx
8
0
th
203/309
1
bit is
1
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