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AM6548ACD 数据表(PDF) 146 Page - Texas Instruments |
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AM6548ACD 数据表(HTML) 146 Page - Texas Instruments |
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146 / 284 page  7.9.3 System Timing For more details about features and additional description information on the subsystem multiplexing signals, see the corresponding sections within Section 6.3, Signal Descriptions and Section 8, Detailed Description. Table 7-6. System Timing Conditions PARAMETER MIN MAX UNIT INPUT CONDITIONS SRI Input slew rate 0.5 5 V/ns OUTPUT CONDITIONS CL Output load capacitance 3 30 pF 7.9.3.1 Reset Electrical Data/Timing Table 7-7, Table 7-8, Figure 7-6, Figure 7-7, and Figure 7-8 present the reset timing requirements and switching characteristics. Table 7-7. Reset Timing Requirements NO. PARAMETER DESCRIPTION MIN MAX UNIT PORz Pin RST1 tw(PORzL) Pulse Width minimum, PORz low 2000 ns RST2 th(SUPPLIES VALID - PORz) Hold time, PORz active (low) after all supplies valid 2000000 ns RESETz Pin RST5 tw(RESETzL) Pulse Width minimum, RESETz low 400 ns MCU_PORz Pin RST13 tw(MCU_PORzL) Pulse Width minimum, MCU_PORz 2000 ns RST8 th(SUPPLIES VALID - MCU_PORz) Hold time, MCU_PORz active (low) after all supplies valid 2000000 ns MCU_RESETz Pin RST9 tw(MCU_RESETzL) Pulse Width minimum, MCU_RESETz 400 ns MCU_BYP_POR Pin RST12 tsu(MCU_BYP_POR-MCU_PORz) Setup time, MCU_BYP_POR active (high) before all supplies are valid 1000000 ns Table 7-8. Reset Switching Characteristics NO. PARAMETER DESCRIPTION MIN MAX UNIT PORz Pin RST3 td(PORz-PORz_OUT low) Delay time, PORz active (low) to PORz_OUT active (low) 0 ns RST4 td(PORz-PORz_OUT high) Delay time, PORz inactive (high) to PORz_OUT inactive (high) 0 ns RESETz Pin RST6 td(RESETz-RESETSTATz low) Delay time, RESETz active (low) to RESETSTATz active (low) 4106 ns RST7 td(RESETz-RESETSTATz high) Delay time, RESETz inactive (high) to RESETSTATz inactive (high) 380000 ns MCU_RESETSTATz Pin RST10 td(MCU_RESETz- MCU_RESETSTATz low) Delay time, MCU_RESETz active (low) to MCU_RESETSTATz active (low) 4106 ns RST11 td(MCU_RESETz- MCU_RESETSTATz high) Delay time, MCU_RESETz inactive (high) to MCU_RESETSTATz inactive (high) 289000 ns MCU_PORz Pin RST14 td(MCU_PORz-MCU_PORz_OUT low) Delay time, MCU_PORz active (low) to MCU_PORz_OUT active (low) 0 ns RST15 td(MCU_PORz-MCU_PORz_OUT high) Delay time, MCU_PORz inactive (high) to MCU_PORz_OUT inactive (high) 0 ns AM6548, AM6528, AM6546, AM6526 SPRSP52B – DECEMBER 2019 – REVISED JUNE 2021 www.ti.com 146 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: AM6548 AM6528 AM6546 AM6526 |
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