JAJSFH1J November 2010 – September 2021 TMS320F28062 , TMS320F28062F , TMS320F28063 , TMS320F28064 , TMS320F28065 , TMS320F28066 , TMS320F28067 , TMS320F28068F , TMS320F28068M , TMS320F28069 , TMS320F28069F , TMS320F28069M
PRODUCTION DATA
PARAMETER | MIN | TYP | MAX | UNIT | |
---|---|---|---|---|---|
tw(RSL1) | Pulse duration, XRS driven by device | 600 | μs | ||
tw(WDRS) | Pulse duration, reset pulse generated by watchdog | 512tc(OSCCLK) | cycles | ||
td(EX) | Delay time, address/data valid after XRS high | 32tc(OSCCLK) | cycles | ||
tINTOSCST | Start-up time, internal zero-pin oscillator | 3 | μs | ||
tOSCST(1) | On-chip crystal-oscillator start-up time | 1 | 10 | ms |
Figure 7-7 shows an example for the effect of writing into PLLCR register. In the first phase, PLLCR = 0x0004 and SYSCLKOUT = OSCCLK × 2. The PLLCR is then written with 0x0008. Right after the PLLCR register is written, the PLL lock-up phase begins. During this phase, SYSCLKOUT = OSCCLK/2. After the PLL lock-up is complete, SYSCLKOUT reflects the new operating frequency, OSCCLK × 4.