ST7LUS5 datasheet(68/124 Pages) STMICROELECTRONICS

部件名	ST7LUS5

功能描述	8-bit low cost, low pin-count MCU for automotive,with single voltage Flash memory, ADC, timers

PDF	124 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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68 / 124 page

On-chip peripherals

ST7LUS5, ST7LU05, ST7LU09

68/124

10.2.2

Main features

●

12-bit up counter with 12-bit autoreload register (ATR)

●

Maskable overflow interrupt

●

PWM signal generator

●

Frequency range 2 kHz to 4 MHz (@ 8 MHz fCPU)

–

Programmable duty-cycle

–

Polarity control

–

Maskable Compare interrupt

●

Output Compare Function

Figure 31.

Block diagram

10.2.3

Functional description

PWM mode

This mode allows a Pulse Width Modulated signals to be generated on the PWM0 output pin

with minimum core processing overhead. The PWM0 output signal can be enabled or

disabled using the OE0 bit in the PWMCR register. When this bit is set the PWM I/O pin is

configured as output push-pull alternate function.

Note:

CMPF0 is available in PWM mode (see PWM0CSR register description on page 74).

ATCSR

CMPIE

OVFIE

OVF

CK0

CK1

12-BIT AUTORELOAD VALUE

12-BIT UPCOUNTER

CMPF0 bit

CMPF0

CMP INTERRUPT

REQUEST

OVF INTERRUPT

REQUEST

fCPU

ATR

POL-

ARITY

OP0 bit

PWM0

COMP-

PARE

fCOUNTER

fPWM

OE0 bit

CNTR

(1ms timebase

fLTIMER

DCR0H

DCR0L

Update on OVF Event

Preload

@ 8 MHz)

on OVF Event

12-BIT DUTY CYCLE VALUE (shadow)

OE0 bit

IF OE0=1

ST7LUS5 数据表(PDF) 68 Page - STMicroelectronics

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