L9803 datasheet(47/126 Pages) STMICROELECTRONICS

部品番号	L9803

部品情報	Super smart power motor driver with 8-Bit MCU, RAM, EEPROM, ADC, WDG, Timers, PWM and H-bridge driver

PDF	126 Pages

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メーカー	STMICROELECTRONICS [STMicroelectronics]

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47 / 126 page

L9803

On-Chip Peripherals

47/126

Figure 23.

Input Capture Block Diagram

Figure 24.

Input Capture Timing Diagram

Output Compare

In this section, the index, i, may be 1 or 2 because there are 2 output compare functions in

the 16-bit timer.

This function can be used to control an output waveform or indicate when a period of time

has elapsed.

When a match is found between the Output Compare register and the free running counter,

the output compare function:

–

Assigns pins with a programmable value if the OCiE bit is set

–

Sets a flag in the status register

–

Generates an interrupt if enabled

Two 16-bit registers Output Compare Register 1 (OC1R) and Output Compare Register 2

(OC2R) contain the value to be compared to the counter register each timer clock cycle

ICIE

CC0

CC1

16-BIT FREE RUNNING

COUNTER

IEDG1

(Control Register 1)

CR1

(Control Register 2)

CR2

ICF2

ICF1

(Status Register)

IEDG2

ICAP1

ICAP2

EDGE DETECT

CIRCUIT2

16-BIT

ICR1

ICR2

EDGE DETECT

CIRCUIT1

FF01

FF02

FF03

TIMER CLOCK

COUNTER REGISTER

ICAPi PIN

ICAPi FLAG

ICAPi REGISTER

Note: A

ctive edge is rising edge.

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