STM32F205RB datasheet(133/163 Pages) STMICROELECTRONICS

133 / 163 page

STM32F205xx, STM32F207xx

Electrical characteristics

Doc ID 15818 Rev 7

133/163

NAND controller waveforms and timings

Figure 68 through Figure 71 represent synchronous waveforms and Table 76 provides the

corresponding timings. The results shown in this table are obtained with the following FSMC

configuration:

●

COM.FSMC_SetupTime = 0x01;

●

COM.FSMC_WaitSetupTime = 0x03;

●

COM.FSMC_HoldSetupTime = 0x02;

●

COM.FSMC_HiZSetupTime = 0x01;

●

ATT.FSMC_SetupTime = 0x01;

●

ATT.FSMC_WaitSetupTime = 0x03;

●

ATT.FSMC_HoldSetupTime = 0x02;

●

ATT.FSMC_HiZSetupTime = 0x01;

●

Bank = FSMC_Bank_NAND;

●

MemoryDataWidth = FSMC_MemoryDataWidth_16b;

●

ECC = FSMC_ECC_Enable;

●

ECCPageSize = FSMC_ECCPageSize_512Bytes;

●

TCLRSetupTime = 0;

●

TARSetupTime = 0;

tw(NIOWR)

FSMC_NIOWR low width

8THCLK + 3

tv(NIOWR-D)

FSMC_NIOWR low to FSMC_D[15:0] valid

5THCLK +1

th(NIOWR-D)

FSMC_NIOWR high to FSMC_D[15:0] invalid

11THCLK

td(NCE4_1-NIOWR) FSMC_NCE4_1 low to FSMC_NIOWR valid

5THCLK+3ns

th(NCEx-NIOWR)

th(NCE4_1-NIOWR)

FSMC_NCEx high to FSMC_NIOWR invalid

FSMC_NCE4_1 high to FSMC_NIOWR invalid

5THCLK – 5

td(NIORD-NCEx)

td(NIORD-NCE4_1)

FSMC_NCEx low to FSMC_NIORD valid FSMC_NCE4_1

low to FSMC_NIORD valid

5THCLK + 2.5 ns

th(NCEx-NIORD)

th(NCE4_1-NIORD)

FSMC_NCEx high to FSMC_NIORD invalid

FSMC_NCE4_1 high to FSMC_NIORD invalid

5THCLK – 5

tsu(D-NIORD)

FSMC_D[15:0] valid before FSMC_NIORD high

4.5

td(NIORD-D)

FSMC_D[15:0] valid after FSMC_NIORD high

tw(NIORD)

FSMC_NIORD low width

8THCLK + 2

CL = 15 pF.

Based on characterization, not tested in production.

Table 75.

Switching characteristics for PC Card/CF read and write cycles(1)(2) (continued)

Symbol

Parameter

Min

Max

Unit

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