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HC705RC16GRS/D Datasheet(PDF) 20 Page - NXP Semiconductors |
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HC705RC16GRS/D Datasheet(HTML) 20 Page - NXP Semiconductors |
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20 / 120 page ![]() General Description General Release Specification MC68HC705RC16 — Rev. 3.0 General Description Figure 1-4. 44-Pin PLCC Pinout 1.5.1 VDD and VSS Power is supplied to the microcontroller’s digital circuits using these two pins. V DD is the positive supply and VSS is ground. 1.5.2 IRQ/VPP (Maskable Interrupt Request) In addition to suppling the EPROM with the required programming voltage, this pin has a mask option as specified by the user that provides one of two different choices of interrupt triggering sensitivity. The options are: 1. Negative edge-sensitive triggering only 2. Both negative edge-sensitive and level-sensitive triggering. PC6 PC5 NC PB7 PB6 PB5 PB4 NC PC7 PA0 PA1 NC NC RESET IRO VSS LPRST NC PC4 PC3 PC2 NC 7 8 9 10 11 12 13 14 15 16 17 39 38 37 36 35 34 33 32 31 30 29 NOTE: NC = No Connect All no connects should be tied to an appropriate logic level (either VDD or VSS). Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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