参数资料
型号: ST7PLITEUS5M6TR
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO8
封装: 0.150 INCH, LEAD FREE, PLASTIC, SOP-8
文件页数: 56/108页
文件大小: 1957K
代理商: ST7PLITEUS5M6TR
ST7LITEUSx
51/108
10.2 12-BIT AUTORELOAD TIMER (AT)
10.2.1 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.
10.2.2 Main Features
12-bit upcounter with 12-bit autoreload register
(ATR)
Maskable overflow interrupt
PWM signal generator
Frequency range 2KHz-4MHz (@ 8 MHz fCPU)
– Programmable duty-cycle
– Polarity control
– Maskable Compare interrupt
Output Compare Function
Figure 33. 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
G
E
NERATION
POL-
ARITY
OP0 bit
PWM0
COMP-
PARE
fCOUNTER
fPWM
OUTPUT
CONTRO
L
OE0 bit
CNTR
(1 ms timebase
fLTIMER
DCR0H
DCR0L
Update on OVF Event
Preload
@ 8MHz)
70
on OVF Event
0
1
12-BIT DUTY CYCLE VALUE (shadow)
OE0 bit
IF OE0=1
1
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