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HC705C9AGRS/D датащи(PDF) 29 Page - NXP Semiconductors |
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HC705C9AGRS/D датащи(HTML) 29 Page - NXP Semiconductors |
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29 / 157 page ![]() General Release Specification Functional Pin Descriptions MC68HC705C9A — Rev. 2.0 General Description Figure 1-8. 44-Pin QFP Pin Assignments 1.7.1 VDD and VSS Power is supplied to the MCU using these two pins. VDD is the positive supply and VSS is ground. 1.7.2 VPP This pin provides the programming voltage to the EPROM array. For normal operation, VPP should be tied to VDD. 1.7.3 IRQ This interrupt pin has an option that provides two different choices of interrupt triggering sensitivity. The IRQ pin contains an internal Schmitt 33 32 31 30 29 28 27 26 25 24 23 PC3 PC2 PC1 PC0 PD0/RDI PD1/TDO PD2/MISO PD3/MOSI PD4/SCK PD5/SS TCMP 1 2 3 4 5 6 7 8 9 10 11 PA6 PA5 PA4 PA3 PA2 PA1 PA0 PB0 PB1 PB2 PB3 Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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