ST7LITE1XB datasheet(68/157 Pages) STMICROELECTRONICS

Numer części	ST7LITE1XB

Szczegółowy opis	8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, 5 TIMERS, SPI

PDF	157 Pages

Scroll/Zoom	100%

Producent	STMICROELECTRONICS [STMicroelectronics]

Strona internetowa	http://www.st.com

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68 / 157 page

ST7LITE1xB

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DUAL 12-BIT AUTORELOAD TIMER 4 (Cont’d)

8. Set the OP_EN bit in the PWM3CSR register to

enable one-pulse mode.

9. Enable the PWM3 output by setting the OE3 bit

in the PWMCR register.

The "Wait for Overflow event" in step 6 can be re-

placed by forced update (writing the FORCE2 bit).

Follow the same procedure for PWM2 with the bits

corresponding to PWM2.

Note: When break is applied in one-pulse mode,

the CNTR2, DCR2/3 & ATR2 registers are reset.

Consequently, these registers have to be initial-

ized again when break is removed.

Figure 47. Block Diagram of One Pulse Mode

Figure 48. One Pulse Mode and PWM Timing Diagram

LTIC pin

Edge

Selection

OPEDGE

PWM3CSR Register

OP_EN

12-bit AutoReload Register 2

12-bit Upcounter 2

12-bit Active DCR2/3

Generation

PWM

OP2/3

PWM2/3

OVF

ATR2

CNTR2

LTIC

PWM2/3

000

DCR2/3

000

DCR2/3

ATR2

000

OVF

ATR2

DCR2/3

OVF

ATR2

DCR2/3

CNTR2

LTIC

PWM2/3

fcounter2

Note 1: When OP_EN=0, LTIC edges are not taken into account as the timer runs in PWM mode.

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