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SST89E516RD2-40-C-NI Datasheet(PDF) 64 Page - Silicon Storage Technology, Inc |
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SST89E516RD2-40-C-NI Datasheet(HTML) 64 Page - Silicon Storage Technology, Inc |
64 / 91 page 64 Preliminary Specifications FlashFlex51 MCU SST89E52RD2 / SST89E54RD2 / SST89E58RD2 / SST89E516RD2 SST89V52RD2 / SST89V54RD2 / SST89V58RD2 / SST89V516RD2 ©2004 Silicon Storage Technology, Inc. S71255-00-000 3/04 11.0 INTERRUPTS 11.1 Interrupt Priority and Polling Sequence The device supports eight interrupt sources under a four level priority scheme. Table 11-1 summarizes the polling sequence of the supported interrupts. Note that the SPI serial interface and the UART share the same interrupt vector. (See Figure 11-1) TABLE 11-1: INTERRUPT POLLING SEQUENCE Description Interrupt Flag Vector Address Interrupt Enable Interrupt Priority Service Priority Wake-Up Power-down Ext. Int0 IE0 0003H EX0 PX0/H 1(highest) yes Brown-out - 004BH EBO PBO/H 2 no T0 TF0 000BH ET0 PT0/H 3 no Ext. Int1 IE1 0013H EX1 PX1/H 4 yes T1 TF1 001BH ET1 PT1/H 5 no PCA CF/CCFn 0033H EC PPCH 6 no Ext. Int. 2 IE2 003BH EX2 PX2/H 7 no Ext. Int. 3 IE3 0043H EX3 PX3/H 8 no UART/SPI TI/RI/SPIF 0023H ES PS/H 9 no T2 TF2, EXF2 002BH ET2 PT2/H 10 no T11-1.0 1255 |
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