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DRA821U4...ALM 数据表(PDF) 160 Page - Texas Instruments |
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DRA821U4...ALM 数据表(HTML) 160 Page - Texas Instruments |
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160 / 252 page  NO. PARAMETER DESCRIPTION MIN MAX UNIT QEP5 tw(QEPSL) Pulse duration, QEP_S low 2 + 2P (1) ns (1) P = sysclk period in ns QEP_S QEP4 EPERIPHERALS_TIMNG_03 QEP_I QEP2 QEP_A/B QEP1 QEP3 QEP5 Figure 7-56. EQEP Input Timings 7.9.5.7.2 Switching Characteristics for EQEP NO. PARAMETER DESCRIPTION MIN MAX UNIT QEP6 td(QEP-CNTR) Delay time, external clock to counter increment 24 ns For more information, see Enhanced Quadrature Encoder Pulse (EQEP) Module section in Peripherals chapter in the device TRM. 7.9.5.8 GPIO The device has ten instances of GPIO modules. The GPIO modules are integrated in three groups. • Group one: WKUP_GPIO0 and WKUP_GPIO1 • Group two: GPIO0, GPIO2, GPIO4, and GPIO6 • Group three: GPIO1, GPIO3, GPIO5, and GPIO7 Within each group, exactly one module is selected to control the corresponding I/O pins and pin interrupts. The GPIO pins are grouped into banks (16 pins per bank), which means that each GPIO module provides up to 144 dedicated general-purpose pins with input and output capabilities; thus, the general-purpose interface supports up to 432 (3 instances × (9 banks × 16 pins)) pins. Since WKUP_GPIOu_[84:143] (u = 0, 1), GPIOn_[128:143] (n = 0, 2, 4, 6), and GPIOm_[36:143] (m = 1, 3, 5 ,7) are reserved in this device, general purpose interface supports up to 248 I/O pins. For more details about features and additional description information on the device General-Purpose Interface, see the corresponding sections within Section 6.3, Signal Descriptions and Section 8, Detailed Description. Note The general-purpose input/output i (i = 0 to 1) is also referred to as GPIOi. Table 7-36, Table 7-37, and Table 7-38 present timing conditions, requirements, and switching characteristics for GPIO. Table 7-36. GPIO Timing Conditions PARAMETER BUFFER TYPE MIN MAX UNIT INPUT CONDITIONS DRA821U-Q1 SPRSP57D – APRIL 2020 – REVISED DECEMBER 2022 www.ti.com 160 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: DRA821U-Q1 |
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