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PIC16LF18313 Datasheet(PDF) 11 Page - Microchip Technology |
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PIC16LF18313 Datasheet(HTML) 11 Page - Microchip Technology |
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11 / 44 page  2014-2016 Microchip Technology Inc. DS40001738D-page 11 PIC16(L)F183XX 3.1.3.6 Begin Internally Timed Programming A Load Configuration or Load Data for NVM command must be given before every Begin Programming command. Programming of the addressed memory will begin after this command is received. An internal timing mechanism executes the write. The user must allow for the program cycle time, TPINT, in order for the programming to complete. End Externally Timed Programming command is not needed when the Begin Internally Timed Programming is used to start the programming. The program memory address that is being programmed is not erased prior to being programmed (see Figure 3-8). FIGURE 3-8: BEGIN INTERNALLY TIMED PROGRAMMING 3.1.3.7 Begin Externally Timed Programming A Load Configuration or Load Data for NVM command must be given before every Begin Programming command. Programming of the addressed memory will begin after this command is received. To complete the programming, the End Externally Timed Programming command must be sent in the specified time window defined by TPEXT (see Figure 3-9). Externally timed writes are not supported for Configuration and Calibration bits. Any externally timed write to the Configuration or Calibration Word will have no effect on the targeted word. FIGURE 3-9: BEGIN EXTERNALLY TIMED PROGRAMMING 3.1.3.8 End Programming This command is required after a Begin Externally Timed Programming command is given. This command must be sent within the time window specified by TPEXT after the Begin Externally Timed Programming command is sent. After sending the End Programming command, an additional delay (TDIS) is required before sending the next command. This delay is longer than the delay ordinarily required between other commands (see Figure 3-10). FIGURE 3-10: END PROGRAMMING 123456 1 123 0 0 0 0 X XXX TPINT ICSPCLK ICSPDAT Next Command 123456 1 123 000 1 X 0 TPEXT ICSPCLK ICSPDAT End Programming Command 0 1 Begin Externally Timed Programming Command 123456 1 123 010 0 X X X X TDIS ICSPCLK ICSPDAT Next Command |
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