ZHCS898O October 2003 – March 2019 TMS320F2801 , TMS320F28015 , TMS320F28016 , TMS320F2802 , TMS320F2806 , TMS320F2808 , TMS320F2809
PRODUCTION DATA.
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The 280x supports three masked external interrupts (XINT1, XINT2, XNMI). XNMI can be connected to the INT13 or NMI interrupt of the CPU. Each of the interrupts can be selected for negative, positive, or both negative and positive edge triggering and can also be enabled/disabled (including the XNMI). The masked interrupts also contain a 16-bit free running up counter, which is reset to zero when a valid interrupt edge is detected. This counter can be used to accurately time stamp the interrupt. Unlike the 281x devices, there are no dedicated pins for the external interrupts. Rather, any Port A GPIO pin can be configured to trigger any external interrupt.