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CY8C21645-12PVXE Datasheet(PDF) 5 Page - Cypress Semiconductor |
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CY8C21645-12PVXE Datasheet(HTML) 5 Page - Cypress Semiconductor |
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5 / 36 page  CY8C21345, CY8C21645 CY8C22345, CY8C22345H, CY8C22645 Document Number: 001-55397 Rev. *I Page 5 of 36 Additional System Resources System Resources, some of which are listed in the previous sections, provide additional capability useful for complete systems. Additional resources include a MAC, low voltage detection, and power on reset. The merits of each system resource are: ■ Digital clock dividers provide three customizable clock frequencies for use in applications. The clocks may be routed to both the digital and analog systems. Additional clocks can be generated using digital PSoC blocks as clock dividers. ■ Additional digital resources and clocks dedicated to and optimized for CapSense. ■ RTC hardware block. ■ A multiply accumulate (MAC) provides a fast 8-bit multiplier with 32-bit accumulate, to assist in both general math and digital filters. ■ The I 2C module provides 0 to 400 kHz communication over two wires. Slave, master, and multi-master modes are all supported. ■ Low voltage detection (LVD) interrupts can signal the application of falling voltage levels, while the advanced power on reset (POR) circuit eliminates the need for a system supervisor. ■ An internal voltage reference provides an absolute reference for the analog system, including ADCs and DACs. PSoC Device Characteristics Depending on your PSoC device characteristics, the digital and analog systems can have varying numbers of digital and analog blocks. The following table lists the resources available for specific PSoC device groups. The PSoC families covered by this datasheet are highlighted in the table. Table 1. PSoC Device Characteristics PSoC Part Number CY8C29x66[2] up to 64 4 16 up to 12 4 4 12 2 KB 32 KB CY8C28xxx up to 44 up to 3 up to 12 up to 44 up to 4 up to 6 up to 16 1 KB 16 KB CY8C27x43 up to 44 2 8 up to 12 4 4 12 256 Bytes 16 KB CY8C24x94[2] up to 56 1 4 up to 48 2 2 6 1 KB 16 KB CY8C24x23A[2] up to 24 1 4 up to 12 2 2 6 256 Bytes 4 KB CY8C23x33 up to 25 1 4 up to 12 2 2 4 256 Bytes 8 KB CY8C22x45[2] up to 38 2 8 up to 38 0 4 6[3] 1 KB 16 KB CY8C21x45[2] up to 38 1 4 up to 38 0 4 6[3] 512 Bytes 8 KB CY8C21x34[2] up to 28 1 4 up to 28 02 4[3] 512 Bytes 8 KB CY8C21x23 up to 16 1 4 up to 8 02 4[3] 256 Bytes 4 KB CY8C20x34[2] up to 28 0 0 up to 28 00 3[3, 4] 512 Bytes 8 KB Notes 2. Automotive qualified devices available in this group. 3. Limited analog functionality . 4. Two analog blocks and one CapSense® block. [+] Feedback |
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