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ZAMC4100GA2R 데이터시트(PDF) 43 Page - Renesas Technology Corp |
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ZAMC4100GA2R 데이터시트(HTML) 43 Page - Renesas Technology Corp |
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43 / 156 page ![]() ZAMC4100 Datasheet © 2016 Integrated Device Technology, Inc. 43 January 26, 2016 3.5. ZAMC4100 System Operational Modes The ZAMC4100 supports three operational modes: NORMAL, SLEEP, and STANDBY. The transition between the different operational modes is shown in Figure 3.6. Figure 3.6 ZAMC4100 Operational Modes Power-down Reset NORMAL SUPPLY STB Y = 1 N x WDT MCU reset PASS FAIL SLEEP = 1 WAKE-UP SLEEP STANDBY WAKE-UP MCU supply check After power-on-reset, the SBC performs an MCU supply check ensuring that both MCU voltages (BUF1V8 and REG3V3 – see section 2.1) are present and in range. Once the supply check has passed, the SBC enters NORMAL Mode; otherwise it enters SLEEP Mode and no further operation is allowed. In this way, it assures the correct functionally of the system in the event of unexpected faults. 3.5.1. NORMAL Mode In NORMAL Mode, the system is fully functional waiting to receive LIN commands and controlling the drivers. From this mode, the system can branch in three directions: • Power-save in SLEEP Mode (see section 3.5.2) • Suspended MCU in STANDBY Mode (see section 3.5.3) • WDT reset event, where software fails to clear the WDT’s flag within the appropriate timing (see section 3.3.1) |
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