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UCD3138064RGCT Folha de dados(PDF) 41 Page - Texas Instruments

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Nome de Peças UCD3138064RGCT
Descrição Electrónicos  UCD3138064 Highly Integrated Digital Controller for Isolated Power With 64-kB Program Flash Memory
PDF  91 Pages
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Fabricante Electrônico  TI1 [Texas Instruments]
Página de início  http://www.ti.com
Logo TI1 - Texas Instruments

UCD3138064RGCT Folha de dados(HTML) 41 Page - Texas Instruments

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tCSS
tWH
tWL
tCSH
tSU
tH
VALID IN
VALID OUT
SCS
SCK
MISO
MOSI
tV
tHO
PSCK
Period SCK
2 ICLK
tWH
SCK High Time
1/2 PSCK
tWL
SCK Low Time
1/2 PSCK
tSU
Data in setup
2 ns (typical)
tH
Data in hold
4 ns (typical)
tV
Ouput Valid
4 ns (typical)
tHO
Ouput Data Hold
2 ns (typical)
tCSS
Chip Select Setup
1 PSCK
tCSH
Chip Select Hold
1 PSCK
UCD3138064
www.ti.com
SLUSB72B – MARCH 2013 – REVISED SEPTEMBER 2014
Figure 6-18. SPI Timing Diagram
6.3.7
Real Time Clock
The UCD3138x has an internal real time clock (RTC) function that can track time in seconds, minutes,
hours and days. This function requires an external precision 10 MHz clock.
•
Firmware writable time/day register which tracks the total number of days.
–
The day counter will be able to count 4 years worth of days.
–
Years and months and leap year calculation must be calculated in firmware.
•
Firmware programmable frequency correction of ±200 ppm in 0.8 ppm steps
•
The RTC function can provide interrupts to the IRQ or FIQ at 1, 10, 30, and 60 second intervals.
•
The clock from the RTC driver can be driven to an external pin through an internal multiplexor
•
The clock for the RTC function can come from an external clock through a dedicated GPIO pin.
6.3.8
Timers
External to the Digital Power Peripherals there are 3 different types of timers in UCD3138x. They are the
24-bit timer, 16-bit timer and the watchdog timer
Copyright © 2013–2014, Texas Instruments Incorporated
Detailed Description
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