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ST7LITE02 bảng dữ liệu(PDF) 46 Page - STMicroelectronics

tên linh kiện ST7LITE02
Giải thích chi tiết về linh kiện  8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, TIMERS, SPI
PDF  122 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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ST7LITE02 bảng dữ liệu(HTML) 46 Page - STMicroelectronics

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11 ON-CHIP PERIPHERALS
11.1 LITE TIMER (LT)
11.1.1 Introduction
The Lite Timer can be used for general-purpose
timing functions. It is based on a free-running 8-bit
upcounter with two software-selectable timebase
periods, an 8-bit input capture register and watch-
dog function.
11.1.2 Main Features
s
Realtime Clock
– 8-bit upcounter
– 1 ms or 2 ms timebase period (@ 8 MHz fOSC)
– Maskable timebase interrupt
s
Input Capture
– 8-bit input capture register (LTICR)
– Maskable interrupt with wakeup from Halt
Mode capability
s
Watchdog
– Enabled by hardware or software (configura-
ble by option byte)
– Optional reset on HALT instruction (configura-
ble by option byte)
– Automatically resets the device unless disable
bit is refreshed
– Software reset (Forced Watchdog reset)
– Watchdog reset status flag
Figure 30. Lite Timer Block Diagram
LTCSR
WATCHDOG
8-bit UPCOUNTER
/2
8-bit
fLTIMER
fWDG
8
LTIC
fOSC/32
WDGD
WDGE
WDG
TBF
TBIE
TB
ICF
ICIE
WATCHDOG RESET
LTTB INTERRUPT REQUEST
LTIC INTERRUPT REQUEST
LTICR
INPUT CAPTURE
REGISTER
1
0
1 or 2 ms
Timebase
(@ 8MHz
fOSC)
To 12-bit AT TImer
fLTIMER
RF
0
7
1



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