After power-up, the internal registers must be initialized to the default values. Initialization can be accomplished in one of two ways:
- Either through hardware reset by applying a high pulse on the RESET terminal (of width greater than 10ns), as shown in Figure 7-9; or
- By applying a software reset. When using the serial interface, set the RESET bit high. This setting initializes the internal registers to the default values and then self-resets the RESET bit low. In this case, the RESET terminal is kept low.
Table 7-9 Serial Interface Timing
CharacteristicsPARAMETER(1) | MIN | TYP | MAX | UNIT |
---|
fSCLK | SCLK frequency (equal to 1/tSCLK) | > DC | | 20 | MHz |
tSLOADS | SEN to SCLK setup time | 30 | | | ns |
tSLOADH | SCLK to SEN hold time | 30 | | | ns |
tDSU | SDATA setup time | 30 | | | ns |
tDH | SDATA hold time | 30 | | | ns |
(1) Typical values at +25°C; minimum and maximum values across the full temperature range: TMIN = –55°C to TMAX = +125°C,
AVDD = 1.8V, and DRVDD = 1.8V, unless otherwise noted.