ST7FMC2S5TC(2004) View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

ST7FMC2S5TC
(Rev.:2004)

8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, BRUSHLESS MOTOR CONTROL, FIVE TIMERS, SPI, LINSCI™

STMicroelectronics 

ST7MC1/ST7MC2

MOTOR CONTROLLER (Cont’d)

Figure 100. Overview of MTIM Timer in Speed Measurement Mode

Registers: MZFR* MPHST* MPAR*

Bits: ECM IS[1:0] TES[1:0]

Tacho Capture

MTIM Read access

C

RTC interrupt

fMTC

fPERIPH

(16MHz)

(4MHz)

Encoder

MPAR* and MPHST*

Clock

Registers

IS[1:0] bits

TES[1:0] bits

RPI

+1

MTIM Register = FFh?

4

MPRSR Register ST[3:0] Bits

-1

MZREG < 55h?

RMI

1 / 2Ratio

Tratio

MTIM§

Clock

16-bit Up Counter

MTIML§

16 MHz - 500 Hz

clr

C

MSbits

LSbits

C

C

MZREG 16-bit Capture Register MZPRV

MDREG

FFh (Fixed)

Compare

Compare

S

Notes:

§ = Register updated on R event

* = Register set-up described in

C

To interrupt generator

(Capture Event)

RPI

To interrupt generator

(Ratio Increment Event)

Speed Sensor Mode Section

S

To interrupt generator

(Speed Error Event)

RMI

To interrupt generator

(Ratio Decrement Event)

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