參數(shù)資料
型號: ST7FLIT19BF1U6TR
廠商: STMICROELECTRONICS
元件分類: 微控制器/微處理器
英文描述: 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, QCC20
封裝: LEAD FREE, QFN-20
文件頁數(shù): 129/153頁
文件大?。?/td> 2862K
代理商: ST7FLIT19BF1U6TR
ST7LITE1xB
77/153
11.3 LITE TIMER 2 (LT2)
11.3.1 Introduction
The Lite Timer can be used for general-purpose
timing functions. It is based on two free-running 8-
bit upcounters and an 8-bit input capture register.
11.3.2 Main Features
Realtime Clock
– One 8-bit upcounter 1 ms or 2 ms timebase
period (@ 8 MHz fOSC)
– One 8-bit upcounter with autoreload and pro-
grammable timebase period from 4s to
1.024ms in 4s increments (@ 8 MHz fOSC)
– 2 Maskable timebase interrupts
Input Capture
– 8-bit input capture register (LTICR)
– Maskable interrupt with wake-up from Halt
mode capability
Figure 50. Lite Timer 2 Block Diagram
LTCSR1
8-bit TIMEBASE
/2
8-bit
fLTIMER
8
LTIC
fOSC/32
TB1F
TB1IE
TB
ICF
ICIE
LTTB1 INTERRUPT REQUEST
LTIC INTERRUPT REQUEST
LTICR
INPUT CAPTURE
REGISTER
1
0
1 or 2 ms
Timebase
(@ 8 MHz
fOSC)
To 12-bit AT TImer
fLTIMER
LTCSR2
TB2F
0
TB2IE
0
LTTB2
8-bit TIMEBASE
0
8-bit AUTORELOAD
REGISTER
8
LTCNTR
LTARR
COUNTER 2
COUNTER 1
0
Interrupt request
1
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