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AN4570 Datasheet(PDF) 19 Page - STMicroelectronics

Part # AN4570
Description  This application note describes how to use the high-density
PDF  46 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN4570 Datasheet(HTML) 19 Page - STMicroelectronics

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DocID026804 Rev 1
19/46
AN4570
Interfacing with a non-multiplexed, asynchronous 16-bit NOR Flash memory
45
GPIO_Init_Structure.Pin
= GPIO_PIN_7 | GPIO_PIN_8 | GPIO_PIN_9 |
GPIO_PIN_10 |
GPIO_PIN_11 | GPIO_PIN_12 | GPIO_PIN_13 |
GPIO_PIN_14 | GPIO_PIN_15;
HAL_GPIO_Init(GPIOE, &GPIO_Init_Structure);
/*## Address Bus #######*/
/* GPIOF configuration */
GPIO_Init_Structure.Pin
= GPIO_PIN_2 | GPIO_PIN_3 |
GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_12 |
GPIO_PIN_13 |
GPIO_PIN_14 | GPIO_PIN_15;
HAL_GPIO_Init(GPIOF, &GPIO_Init_Structure);
GPIO_Init_Structure.Pin
= GPIO_PIN_0 | GPIO_PIN_1;
HAL_GPIO_Init(GPIOH, &GPIO_Init_Structure);
/* GPIOG configuration */
GPIO_Init_Structure.Pin
= GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2 |
GPIO_PIN_3 | GPIO_PIN_4 | GPIO_PIN_5;
HAL_GPIO_Init(GPIOG, &GPIO_Init_Structure);
/* GPIOD configuration */
GPIO_Init_Structure.Pin
= GPIO_PIN_11 | GPIO_PIN_12 | GPIO_PIN_13;
HAL_GPIO_Init(GPIOD, &GPIO_Init_Structure);
/* GPIOE configuration */
GPIO_Init_Structure.Pin
= GPIO_PIN_3 | GPIO_PIN_4 | GPIO_PIN_5 |
GPIO_PIN_6;
HAL_GPIO_Init(GPIOE, &GPIO_Init_Structure);
/*## NOE and NWE configuration ######*/
GPIO_Init_Structure.Pin = GPIO_PIN_4 | GPIO_PIN_5;
HAL_GPIO_Init(GPIOD, &GPIO_Init_Structure);
/*## NE2 configuration ######*/
GPIO_Init_Structure.Pin = GPIO_PIN_9;
HAL_GPIO_Init(GPIOG, &GPIO_Init_Structure);
/*## Configure PD6 for NOR memory Ready/Busy signal ######*/
GPIO_Init_Structure.Pin
= GPIO_PIN_6;
GPIO_Init_Structure.Mode
= GPIO_MODE_AF_PP;
GPIO_Init_Structure.Pull
= GPIO_PULLUP;
GPIO_Init_Structure.Alternate = GPIO_AF12_FMC;
HAL_GPIO_Init(GPIOD, &GPIO_Init_Structure);
}



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