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ST7LITE1XB Datasheet(PDF) 70 Page - STMicroelectronics

No. de pieza ST7LITE1XB
Descripción Electrónicos  8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, 5 TIMERS, SPI
PDF  157 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST7LITE1XB Datasheet(HTML) 70 Page - STMicroelectronics

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DUAL 12-BIT AUTORELOAD TIMER 4 (Cont’d)
11.2.3.7 Force Update
In order not to wait for the counterx overflow to
load the value into active DCRx registers, a pro-
grammable counterx overflow is provided. For
both counters, a separate bit is provided which
when set, make the counters start with the over-
flow value, i.e. FFFh. After overflow, the counters
start counting from their respective auto reload
register values.
These bits are FORCE1 and FORCE2 in the
ATCSR2 register. FORCE1 is used to force an
overflow on Counter 1 and, FORCE2 is used for
Counter 2. These bits are set by software and re-
set by hardware after the respective counter over-
flow event has occurred.
This feature can be used at any time. All related
features such as PWM generation, Output Com-
pare, Input Capture, One-pulse (refer to Figure 49.
Dynamic DCR2/3 update in One Pulse Mode) can
be used this way.
Figure 50. Force Overflow Timing Diagram
FFF
ATRx
E04
E03
fCNTRx
CNTRx
FORCEx
FORCE2 FORCE1
ATCSR2 Register
1



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