Information

Electrical characteristics STM32F20xxx

140/178 DocID15818 Rev 11

PC Card/CompactFlash controller waveforms and timings

Figure 64 through Figure 69 represent synchronous waveforms together with Table 80 and

Table 81 provides the corresponding timings. The results shown in this table are obtained

with the following FSMC configuration:

• COM.FSMC_SetupTime = 0x04;

• COM.FSMC_WaitSetupTime = 0x07;

• COM.FSMC_HoldSetupTime = 0x04;

• COM.FSMC_HiZSetupTime = 0x00;

• ATT.FSMC_SetupTime = 0x04;

• ATT.FSMC_WaitSetupTime = 0x07;

• ATT.FSMC_HoldSetupTime = 0x04;

• ATT.FSMC_HiZSetupTime = 0x00;

• IO.FSMC_SetupTime = 0x04;

• IO.FSMC_WaitSetupTime = 0x07;

• IO.FSMC_HoldSetupTime = 0x04;

• IO.FSMC_HiZSetupTime = 0x00;

• TCLRSetupTime = 0;

• TARSetupTime = 0;

In all timing tables, the

HCLK

is the HCLK clock period.

d(CLKL-Data)

FSMC_D[15:0] valid data after FSMC_CLK low - 2 ns

d(CLKL-NBLH)

FSMC_CLK low to FSMC_NBL high 2 - ns

1. C

= 30 pF.

2. Based on characterization, not tested in production.

Table 79. Synchronous non-multiplexed PSRAM write timings

(1)(2)

(continued)

Symbol Parameter Min Max Unit