參數(shù)資料
型號(hào): ST7PL05Y0MB/XXXTRE
廠商: STMICROELECTRONICS
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO16
封裝: 0.150 INCH WIDTH, PLASTIC, LEAD FREE, SOP-16
文件頁(yè)數(shù): 49/106頁(yè)
文件大小: 1990K
代理商: ST7PL05Y0MB/XXXTRE
ST7L05, ST7L09
47/104
11.2 12-BIT AUTORELOAD TIMER (AT)
11.2.1 Introduction
The 12-bit Autoreload Timer can be used for gen-
eral-purpose timing functions. It is based on a free-
running 12-bit upcounter with a PWM output chan-
nel.
11.2.2 Main Features
12-bit upcounter 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 28. Block Diagram
ATCSR
CMPIE
OVFIE
OVF
CK0
CK1
0
12-BIT AUTORELOAD VALUE
12-BIT UPCOUNTER
CMPF0 bit
CMPF0
CMP INTERRUPT
REQUEST
OVF INTERRUPT
REQUEST
fCPU
ATR
PWM
GENE
R
A
TIO
N
POL-
ARITY
OP0 bit
PWM0
COMP-
PARE
fCOUNTER
fPWM
OUTPUT
CONTROL
OE0 bit
CNTR
(1 ms timebase
fLTIMER
DCR0H
DCR0L
Update on OVF Event
Preload
@ 8 MHz)
70
on OVF Event
0
1
12-BIT DUTY CYCLE VALUE (shadow)
OE0 bit
IF OE0= 1
1
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