AN2523 Datasheet, PDF (3/23 Pages) STMicroelectronics – Migrating from STR91xF to STR91xFA

AN2523
Contents
7.3.7 Hardware reset of ESC register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.4 EMI bus enhancement (BGA 144 package only) . . . . . . . . . . . . . . . . . . . 20
7.4.1 Option to configure the new EMI_BCLK signal . . . . . . . . . . . . . . . . . . . 20
7.4.2 Option to configure the EMI_WRLn and EMI_WRHn pins . . . . . . . . . . 20
7.4.3 Interface to PSRAM (burst mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.4.4 Asynchronous mode and PSRAM (Synchronous) mode timings . . . . . 21
8
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
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