ZHCSV76A June 2022 – March 2024 TMS570LC4357-SEP
PRODUCTION DATA
请参考 PDF 数据表获取器件具体的封装图。
The voltage monitor generates the Power Good MCU signal (PGMCU) as well as the I/Os Power Good IO signal (PGIO) on the device. During power-up or power-down, the PGMCU and PGIO are driven low when the core or I/O supplies are lower than the specified minimum monitoring thresholds. The PGIO and PGMCU being low isolates the core logic as well as the I/O controls during power up or power down of the supplies. This allows the core and I/O supplies to be powered up or down in any order.
When the voltage monitor detects a low voltage on the I/O supply, it will assert a power-on reset. When the voltage monitor detects an out-of-range voltage on the core supply, it asynchronously makes all output pins high impedance, and asserts a power-on reset. The I/O supply must be above the threshold for monitoring the core supply. The voltage monitor is disabled when the device enters a low power mode.
The VMON also incorporates a glitch filter for the nPORRST input. Refer to Section 7.3.3.1 for the timing information on this glitch filter.
PARAMETER | MIN | TYP | MAX | UNIT | ||
---|---|---|---|---|---|---|
VMON | Voltage monitoring thresholds | VCC low - VCC level below this threshold is detected as too low. | 0.75 | 0.9 | 1.13 | V |
VCC high - VCC level above this threshold is detected as too high. | 1.40 | 1.7 | 2.1 | |||
VCCIO low - VCCIO level below this threshold is detected as too low. | 1.85 | 2.4 | 2.99 |