ZHCSPJ8B December 2021 – December 2023 AM2732 , AM2732-Q1
PRODUCTION DATA
请参考 PDF 数据表获取器件具体的封装图。
The AM273x device expects all external voltage rails and SOP boot mode select lines to be stable before NRESET is de-asserted (brought from VSS level to VIOIN level). Likewise external voltage rails should only be powered down after NRESET is asserted (brought from VIOIN level to VSS level).Figure 6-1 describes the device wake-up and power-down sequence.
Table 6-10 lists the timing values shown in Figure 6-1.
NAME | DESCRIPTION | MIN | TYP | MAX | UNIT |
---|---|---|---|---|---|
tPOWER_STABLE |
Settling time after initial power supply turn-on after which device power nets are at valid, recommended operating conditions. NRESET should not be de-asserted (brought from GND to VIOIN level) before all power pins are at recommended operating point. See Recommended Operating Conditions for recommended operating conditions of all device power pins. |
0 | ms | ||
tRESET_DELAY |
Delay after device power nets are at valid, nominal values, when NRESET can be brought from VSS to VIOIN level. NRESET can be brought from VSS to VIOIN level anytime after power supplies are at recommended operating conditions. |
0 | ms | ||
tSU_SOP |
Setup time for SOP signals to be sampled by the rising edge of NRESET. Device is ready to sample SOP pin states anytime after power supplies are at recommended operating conditions. |
0 | ms | ||
tMSS_BOOT_START |
Typical delay after NRESET rising edge before boot ROM to begins MSS code execution. Value depends on whether device is operating directly from a crystal source or oscillator (REFCLK) source. Faster startup possible with the oscillator mode. |
0.5 | 7.0 | ms | |
tRESET_POWER_DELAY |
During power off events, delay after NRESET is brought from VIOIN to VSS level to when power pins can be powered off. Device power pins can be powered off anytime after NRESET is brought to VSS level. |
0 | ms |