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RV-3049 датащи(PDF) 31 Page - MICORO CRYSTAL SWITZERLAND

номер детали RV-3049
подробное описание детали  DTCXO Temperature Compensated Real Time Clock
PDF  65 Pages
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производитель  MICROCRYSTAL [MICORO CRYSTAL SWITZERLAND]
домашняя страница  http://www.microcrystal.com
Logo MICROCRYSTAL - MICORO CRYSTAL SWITZERLAND

RV-3049 датащи(HTML) 31 Page - MICORO CRYSTAL SWITZERLAND

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Micro Crystal
DTCXO Temperature Compensated Real Time Clock / Calendar Module
RV-3049
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4.4.1.TIMER INTERRUT
The generation of Interrupts from the Countdown Timer function is enabled by “TIE” = “1” (bit 1 in register
Control_INT). If Timer Interrupt is enabled by “TIE” = “1”, the Timer Flag “TF” (bit 1 in register Control_INT Flag) will
be set = “1” at the end of every Timer countdown.
The Interrupt signal INT follows the condition of Timer Flag “TF” (bit 1 in register Control_INT Flag), the Timer Flag
“TF” and the Interrupt signal ( INT ) remain set until cleared by software writing “TF” = “0”.
Timer Interrupt Control (addresses 01h / 02h…bits description)
Address
Function
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
01h
Control_INT
X
X
X
SRIE
V2IE
V1IE
TIE
AIE
bit 1
TIE
0
TF is disabled, no Timer Interrupt generated
1
TF is enabled, Timer Interrupt generated when Countdown Timer value
reaches zero and TF is set “1”
02h
Control_INT Flag
X
X
X
SRF
V2IF
V1IF
TF
AF
bit 1
TF
0
No Timer Interrupt generated
1
Timer Flag is set “1” when TIE is enabled and Countdown Timer value
reaches zero, TF needs to be cleared to clear INT
Bit positions labelled as “X” are not implemented and will return a “0” when read.



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