st7pmc2s6 STMicroelectronics, st7pmc2s6 Datasheet - Page 216

• Manufacturer Part Number: st7pmc2s6
• Description: 8-bit Mcu For Automotive With Nested Interrupts, Flash, 10-bit Adc, Brushless Motor Control, 5 Timers, Spi, Linsci?
• Manufacturer: STMicroelectronics

On-chip peripherals
Figure 93. Step ratio functional diagram
1. Only in auto-switched mode (SWA = 1 in MCRA register).
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MCOMP = MCOMP/2
MDREG = MDREG/2
MZREG = MZREG/2
MTIM timer overflow
MZPRV = MZPRV/2
Counter = counter/2
Slow-down control
Ratio = ratio + 1
MPRSR register
Ratio < Fh?
Begin
End
Yes
1)
ST7MC1K2-Auto, ST7MC1K6-Auto, ST7MC2S4-Auto, ST7MC2S6-Auto
No
-1
+1
MTIM timer control over T
ST[3:0] bits
MTIM timer = 100h?
R-
R+
Zn < 55h?
4
ratio
and register operation
Z capture with MTIM timer underflow (Zn < 55h)
2 MHz - 62.5 Hz
1/2 ratio
f
PERIPH
1/2
MDREG = MDREG x 2
MZREG = MZREG x 2
MZPRV = MZPRV x 2
MCOMP = MCOMP/2
Counter = counter x 2
Tratio
Compute MCOMP
ck
Speed-up control
Ratio = ratio - 1
Ratio > 0?
Begin
End
Yes
No