ST7MC2S4 STMicroelectronics, ST7MC2S4 Datasheet - Page 182
ST7MC2S4
Manufacturer Part Number
ST7MC2S4
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)
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ST7MC1xx/ST7MC2xx
MOTOR CONTROLLER (Cont’d)
Figure 102. Overview of MTIM Timer in Speed Measurement Mode
182/309
1
Notes:
§
*
= Register set-up described in
= Register updated on R event
MTIM Read access
Speed Sensor Mode Section
Tacho Capture
RTC interrupt
Registers: MSCR* MPHST* MPAR*
Bits:
C
ECM
MZREG
MTIM
MPRSR Register
IS[1:0] TES[1:0]
MSbits
§
16-bit Capture Register
C
S
16-bit Up Counter
C
Compare
+1
-1
To interrupt generator
To interrupt generator
(Speed Error Event)
ST[3:0] Bits
Clock
(Capture Event)
MDREG
C
RMI
MTIM Register = 100h?
RPI
MZPRV
MTIML
MZREG < 55h?
MPAR* and MPHST*
4
LSbits
TES[1:0] bits
§
IS[1:0] bits
Registers
S
RPI
RMI
clr
Compare
FFh (Fixed)
(Ratio Decrement Event)
(Ratio Increment Event)
f
(16MHz)
MTC
To interrupt generator
To interrupt generator
16 MHz - 500 Hz
1 / 2
C
Encoder
Ratio
Clock
Tratio
f
PERIPH
(4MHz)
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