diff --git a/Cargo.toml b/Cargo.toml
index 17a6540..ecca95a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -17,6 +17,7 @@ members = [
     "src/periph/adc",
     "src/periph/dma",
     "src/periph/exti",
+    "src/periph/flash",
     "src/periph/gpio",
     "src/periph/i2c",
     "src/periph/rtc",
@@ -64,6 +65,7 @@ std = ["drone-core/std", "drone-cortexm/std"]
 adc = ["drone-stm32-map-periph-adc"]
 dma = ["drone-stm32-map-periph-dma"]
 exti = ["drone-stm32-map-periph-exti"]
+flash = ["drone-stm32-map-periph-flash"]
 gpio = ["drone-stm32-map-periph-gpio"]
 i2c = ["drone-stm32-map-periph-i2c"]
 rtc = ["drone-stm32-map-periph-rtc"]
@@ -98,6 +100,11 @@ version = "=0.14.0"
 path = "src/periph/exti"
 optional = true
 
+[dependencies.drone-stm32-map-periph-flash]
+version = "=0.14.0"
+path = "src/periph/flash"
+optional = true
+
 [dependencies.drone-stm32-map-periph-gpio]
 version = "=0.14.0"
 path = "src/periph/gpio"
diff --git a/Justfile b/Justfile
index 1c6a398..46a0c4f 100644
--- a/Justfile
+++ b/Justfile
@@ -1,4 +1,4 @@
-features := 'adc dma exti gpio i2c rtc spi tim uart'
+features := 'adc dma exti flash gpio i2c rtc spi tim uart'
 target := `drone print target 2>/dev/null || echo ""`
 
 # Install dependencies
@@ -109,6 +109,7 @@ publish:
 	cd src/periph/adc && cargo publish
 	cd src/periph/dma && cargo publish
 	cd src/periph/exti && cargo publish
+	cd src/periph/flash && cargo publish
 	cd src/periph/gpio && cargo publish
 	cd src/periph/i2c && cargo publish
 	cd src/periph/rtc && cargo publish
diff --git a/README.md b/README.md
index de961db..1ed84e5 100644
--- a/README.md
+++ b/README.md
@@ -18,40 +18,55 @@ drop-in replacement for it.
 
 ## Supported Devices
 
-| `stm32_mcu` | Core name             | Reference manual                                                         | Available features                                       |
-|-------------|-----------------------|--------------------------------------------------------------------------|----------------------------------------------------------|
-| `stm32f100` | ARM® Cortex®-M3 r1p1  | [RM0041](https://www.st.com/resource/en/reference_manual/cd00246267.pdf) | `dma` `gpio` `spi` `tim`                                 |
-| `stm32f101` | ARM® Cortex®-M3 r1p1  | [RM0008](https://www.st.com/resource/en/reference_manual/cd00171190.pdf) | `dma` `gpio` `spi` `tim`                                 |
-| `stm32f102` | ARM® Cortex®-M3 r1p1  | [RM0008](https://www.st.com/resource/en/reference_manual/cd00171190.pdf) | `dma` `gpio` `spi` `tim`                                 |
-| `stm32f103` | ARM® Cortex®-M3 r1p1  | [RM0008](https://www.st.com/resource/en/reference_manual/cd00171190.pdf) | `dma` `gpio` `spi` `tim`                                 |
-| `stm32f107` | ARM® Cortex®-M3 r1p1  | [RM0008](https://www.st.com/resource/en/reference_manual/cd00171190.pdf) | `dma` `gpio` `spi` `tim`                                 |
-| `stm32f303` | ARM® Cortex®-M4F r0p1 | [RM0316](https://www.st.com/resource/en/reference_manual/dm00043574.pdf) | `adc` `dma` `exti` `gpio` `i2c` `tim`                    |
-| `stm32f401` | ARM® Cortex®-M4F r0p1 | [RM0368](https://www.st.com/resource/en/reference_manual/dm00096844.pdf) | `adc` `dma` `exti` `gpio` `i2c` `spi` `tim` `uart`       |
-| `stm32f405` | ARM® Cortex®-M4F r0p1 | [RM0090](https://www.st.com/resource/en/reference_manual/dm00031020.pdf) | `adc` `dma` `exti` `gpio` `i2c` `spi` `tim` `uart`       |
-| `stm32f407` | ARM® Cortex®-M4F r0p1 | [RM0090](https://www.st.com/resource/en/reference_manual/dm00031020.pdf) | `adc` `dma` `exti` `gpio` `i2c` `spi` `tim` `uart`       |
-| `stm32f410` | ARM® Cortex®-M4F r0p1 | [RM0401](https://www.st.com/resource/en/reference_manual/dm00180366.pdf) | `adc` `dma` `exti` `gpio` `i2c` `spi` `tim` `uart`       |
-| `stm32f411` | ARM® Cortex®-M4F r0p1 | [RM0383](https://www.st.com/resource/en/reference_manual/dm00119316.pdf) | `adc` `dma` `exti` `gpio` `i2c` `spi` `tim` `uart`       |
-| `stm32f412` | ARM® Cortex®-M4F r0p1 | [RM0402](https://www.st.com/resource/en/reference_manual/dm00180369.pdf) | `adc` `dma` `exti` `gpio` `i2c` `spi` `tim` `uart`       |
-| `stm32f413` | ARM® Cortex®-M4F r0p1 | [RM0430](https://www.st.com/resource/en/reference_manual/dm00305666.pdf) | `adc` `dma` `exti` `gpio` `i2c` `spi` `tim` `uart`       |
-| `stm32f427` | ARM® Cortex®-M4F r0p1 | [RM0090](https://www.st.com/resource/en/reference_manual/dm00031020.pdf) | `adc` `dma` `exti` `gpio` `i2c` `spi` `tim` `uart`       |
-| `stm32f429` | ARM® Cortex®-M4F r0p1 | [RM0090](https://www.st.com/resource/en/reference_manual/dm00031020.pdf) | `adc` `dma` `exti` `gpio` `i2c` `spi` `tim` `uart`       |
-| `stm32f446` | ARM® Cortex®-M4F r0p1 | [RM0390](https://www.st.com/resource/en/reference_manual/dm00135183.pdf) | `adc` `dma` `exti` `gpio` `i2c` `spi` `tim` `uart`       |
-| `stm32f469` | ARM® Cortex®-M4F r0p1 | [RM0386](https://www.st.com/resource/en/reference_manual/dm00127514.pdf) | `adc` `dma` `exti` `gpio` `i2c` `spi` `tim` `uart`       |
-| `stm32l4x1` | ARM® Cortex®-M4F r0p1 | [RM0394](https://www.st.com/resource/en/reference_manual/dm00151940.pdf) | `dma` `exti` `gpio` `i2c` `rtc` `spi` `tim` `uart`       |
-| `stm32l4x2` | ARM® Cortex®-M4F r0p1 | [RM0394](https://www.st.com/resource/en/reference_manual/dm00151940.pdf) | `dma` `exti` `gpio` `i2c` `rtc` `spi` `tim` `uart`       |
-| `stm32l4x3` | ARM® Cortex®-M4F r0p1 | [RM0394](https://www.st.com/resource/en/reference_manual/dm00151940.pdf) | `dma` `exti` `gpio` `i2c` `rtc` `spi` `tim` `uart`       |
-| `stm32l4x5` | ARM® Cortex®-M4F r0p1 | [RM0351](https://www.st.com/resource/en/reference_manual/dm00083560.pdf) | `dma` `exti` `gpio` `i2c` `rtc` `spi` `tim` `uart`       |
-| `stm32l4x6` | ARM® Cortex®-M4F r0p1 | [RM0351](https://www.st.com/resource/en/reference_manual/dm00083560.pdf) | `dma` `exti` `gpio` `i2c` `rtc` `spi` `tim` `uart`       |
-| `stm32l4r5` | ARM® Cortex®-M4F r0p1 | [RM0432](https://www.st.com/resource/en/reference_manual/dm00310109.pdf) | `adc` `dma` `exti` `gpio` `i2c` `rtc` `spi` `tim` `uart` |
-| `stm32l4s5` | ARM® Cortex®-M4F r0p1 | [RM0432](https://www.st.com/resource/en/reference_manual/dm00310109.pdf) | `adc` `dma` `exti` `gpio` `i2c` `rtc` `spi` `tim` `uart` |
-| `stm32l4r7` | ARM® Cortex®-M4F r0p1 | [RM0432](https://www.st.com/resource/en/reference_manual/dm00310109.pdf) | `adc` `dma` `exti` `gpio` `i2c` `rtc` `spi` `tim` `uart` |
-| `stm32l4s7` | ARM® Cortex®-M4F r0p1 | [RM0432](https://www.st.com/resource/en/reference_manual/dm00310109.pdf) | `adc` `dma` `exti` `gpio` `i2c` `rtc` `spi` `tim` `uart` |
-| `stm32l4r9` | ARM® Cortex®-M4F r0p1 | [RM0432](https://www.st.com/resource/en/reference_manual/dm00310109.pdf) | `adc` `dma` `exti` `gpio` `i2c` `rtc` `spi` `tim` `uart` |
-| `stm32l4s9` | ARM® Cortex®-M4F r0p1 | [RM0432](https://www.st.com/resource/en/reference_manual/dm00310109.pdf) | `adc` `dma` `exti` `gpio` `i2c` `rtc` `spi` `tim` `uart` |
+| `stm32_mcu` | Core name             | Reference manual | Available features                                         |
+|-------------|-----------------------|------------------|------------------------------------------------------------|
+| `stm32f100` | ARM® Cortex®-M3 r1p1  | [RM0041][RM0041] | `dma` `gpio` `spi` `tim`                                   |
+| `stm32f101` | ARM® Cortex®-M3 r1p1  | [RM0008][RM0008] | `dma` `gpio` `spi` `tim`                                   |
+| `stm32f102` | ARM® Cortex®-M3 r1p1  | [RM0008][RM0008] | `dma` `gpio` `spi` `tim`                                   |
+| `stm32f103` | ARM® Cortex®-M3 r1p1  | [RM0008][RM0008] | `dma` `gpio` `spi` `tim`                                   |
+| `stm32f107` | ARM® Cortex®-M3 r1p1  | [RM0008][RM0008] | `dma` `gpio` `spi` `tim`                                   |
+| `stm32f303` | ARM® Cortex®-M4F r0p1 | [RM0316][RM0316] | `adc` `dma` `exti` `gpio` `i2c` `tim`                      |
+| `stm32f401` | ARM® Cortex®-M4F r0p1 | [RM0368][RM0368] | `adc` `dma` `exti` `gpio` `i2c` `spi` `tim` `uart`         |
+| `stm32f405` | ARM® Cortex®-M4F r0p1 | [RM0090][RM0090] | `adc` `dma` `exti` `flash` `gpio` `i2c` `spi` `tim` `uart` |
+| `stm32f407` | ARM® Cortex®-M4F r0p1 | [RM0090][RM0090] | `adc` `dma` `exti` `flash` `gpio` `i2c` `spi` `tim` `uart` |
+| `stm32f410` | ARM® Cortex®-M4F r0p1 | [RM0401][RM0401] | `adc` `dma` `exti` `gpio` `i2c` `spi` `tim` `uart`         |
+| `stm32f411` | ARM® Cortex®-M4F r0p1 | [RM0383][RM0383] | `adc` `dma` `exti` `gpio` `i2c` `spi` `tim` `uart`         |
+| `stm32f412` | ARM® Cortex®-M4F r0p1 | [RM0402][RM0402] | `adc` `dma` `exti` `gpio` `i2c` `spi` `tim` `uart`         |
+| `stm32f413` | ARM® Cortex®-M4F r0p1 | [RM0430][RM0430] | `adc` `dma` `exti` `gpio` `i2c` `spi` `tim` `uart`         |
+| `stm32f427` | ARM® Cortex®-M4F r0p1 | [RM0090][RM0090] | `adc` `dma` `exti` `flash` `gpio` `i2c` `spi` `tim` `uart` |
+| `stm32f429` | ARM® Cortex®-M4F r0p1 | [RM0090][RM0090] | `adc` `dma` `exti` `flash` `gpio` `i2c` `spi` `tim` `uart` |
+| `stm32f446` | ARM® Cortex®-M4F r0p1 | [RM0390][RM0390] | `adc` `dma` `exti` `gpio` `i2c` `spi` `tim` `uart`         |
+| `stm32f469` | ARM® Cortex®-M4F r0p1 | [RM0386][RM0386] | `adc` `dma` `exti` `gpio` `i2c` `spi` `tim` `uart`         |
+| `stm32l4x1` | ARM® Cortex®-M4F r0p1 | [RM0394][RM0394] | `dma` `exti` `gpio` `i2c` `rtc` `spi` `tim` `uart`         |
+| `stm32l4x2` | ARM® Cortex®-M4F r0p1 | [RM0394][RM0394] | `dma` `exti` `gpio` `i2c` `rtc` `spi` `tim` `uart`         |
+| `stm32l4x3` | ARM® Cortex®-M4F r0p1 | [RM0394][RM0394] | `dma` `exti` `gpio` `i2c` `rtc` `spi` `tim` `uart`         |
+| `stm32l4x5` | ARM® Cortex®-M4F r0p1 | [RM0351][RM0351] | `dma` `exti` `gpio` `i2c` `rtc` `spi` `tim` `uart`         |
+| `stm32l4x6` | ARM® Cortex®-M4F r0p1 | [RM0351][RM0351] | `dma` `exti` `gpio` `i2c` `rtc` `spi` `tim` `uart`         |
+| `stm32l4r5` | ARM® Cortex®-M4F r0p1 | [RM0432][RM0432] | `adc` `dma` `exti` `gpio` `i2c` `rtc` `spi` `tim` `uart`   |
+| `stm32l4s5` | ARM® Cortex®-M4F r0p1 | [RM0432][RM0432] | `adc` `dma` `exti` `gpio` `i2c` `rtc` `spi` `tim` `uart`   |
+| `stm32l4r7` | ARM® Cortex®-M4F r0p1 | [RM0432][RM0432] | `adc` `dma` `exti` `gpio` `i2c` `rtc` `spi` `tim` `uart`   |
+| `stm32l4s7` | ARM® Cortex®-M4F r0p1 | [RM0432][RM0432] | `adc` `dma` `exti` `gpio` `i2c` `rtc` `spi` `tim` `uart`   |
+| `stm32l4r9` | ARM® Cortex®-M4F r0p1 | [RM0432][RM0432] | `adc` `dma` `exti` `gpio` `i2c` `rtc` `spi` `tim` `uart`   |
+| `stm32l4s9` | ARM® Cortex®-M4F r0p1 | [RM0432][RM0432] | `adc` `dma` `exti` `gpio` `i2c` `rtc` `spi` `tim` `uart`   |
 
 `stm32_mcu` config flag should be set at the application level according to
 this table.
 
+[RM0008]: https://www.st.com/resource/en/reference_manual/cd00171190.pdf
+[RM0041]: https://www.st.com/resource/en/reference_manual/cd00246267.pdf
+[RM0090]: https://www.st.com/resource/en/reference_manual/dm00031020.pdf
+[RM0316]: https://www.st.com/resource/en/reference_manual/dm00043574.pdf
+[RM0351]: https://www.st.com/resource/en/reference_manual/dm00083560.pdf
+[RM0368]: https://www.st.com/resource/en/reference_manual/dm00096844.pdf
+[RM0383]: https://www.st.com/resource/en/reference_manual/dm00119316.pdf
+[RM0386]: https://www.st.com/resource/en/reference_manual/dm00127514.pdf
+[RM0390]: https://www.st.com/resource/en/reference_manual/dm00135183.pdf
+[RM0394]: https://www.st.com/resource/en/reference_manual/dm00151940.pdf
+[RM0401]: https://www.st.com/resource/en/reference_manual/dm00180366.pdf
+[RM0402]: https://www.st.com/resource/en/reference_manual/dm00180369.pdf
+[RM0430]: https://www.st.com/resource/en/reference_manual/dm00305666.pdf
+[RM0432]: https://www.st.com/resource/en/reference_manual/dm00310109.pdf
+
 ## Documentation
 
 - [Drone Book](https://book.drone-os.com/)
diff --git a/src/periph/flash/Cargo.toml b/src/periph/flash/Cargo.toml
new file mode 100644
index 0000000..2ef43d8
--- /dev/null
+++ b/src/periph/flash/Cargo.toml
@@ -0,0 +1,28 @@
+[package]
+name = "drone-stm32-map-periph-flash"
+version = "0.14.0"
+authors = ["Valentine Valyaeff <valentine.valyaeff@gmail.com>"]
+edition = "2018"
+resolver = "2"
+repository = "https://github.com/drone-os/drone-stm32-map"
+homepage = "https://www.drone-os.com/"
+documentation = "https://api.drone-os.com/drone-stm32-map/0.14/drone_stm32_map_periph_flash/"
+license = "MIT OR Apache-2.0"
+description = """
+STM32 peripheral mappings for Drone, an Embedded Operating System.
+"""
+
+[lib]
+path = "lib.rs"
+
+[dependencies.drone-core]
+version = "0.14.0"
+path = "../../../../drone-core"
+
+[dependencies.drone-cortexm]
+version = "0.14.0"
+path = "../../../../drone-cortexm"
+
+[dependencies.drone-stm32-map-pieces]
+version = "=0.14.0"
+path = "../../pieces"
diff --git a/src/periph/flash/f4.rs b/src/periph/flash/f4.rs
new file mode 100644
index 0000000..9f8ebd0
--- /dev/null
+++ b/src/periph/flash/f4.rs
@@ -0,0 +1,32 @@
+//! Mapping for Flash.
+//!
+//! For STM32F4 series of high-performance MCUs with DSP and FPU instructions.
+
+use drone_core::periph;
+
+periph::singular! {
+    /// Extracts Flash register tokens.
+    pub macro periph_flash;
+
+    /// FLASH peripheral.
+    pub struct FlashPeriph;
+
+    drone_stm32_map_pieces::reg;
+    crate;
+
+    FLASH {
+        ACR;
+        KEYR;
+        OPTKEYR;
+        SR;
+        CR;
+        OPTCR;
+        #[cfg(any(
+            stm32_mcu = "stm32f427",
+            stm32_mcu = "stm32f429",
+            stm32_mcu = "stm32f437",
+            stm32_mcu = "stm32f439",
+        ))]
+        OPTCR1;
+    }
+}
diff --git a/src/periph/flash/lib.rs b/src/periph/flash/lib.rs
new file mode 100644
index 0000000..d0f74b6
--- /dev/null
+++ b/src/periph/flash/lib.rs
@@ -0,0 +1,31 @@
+//! Flash.
+
+#![feature(proc_macro_hygiene)]
+#![warn(missing_docs)]
+#![warn(clippy::pedantic)]
+#![allow(clippy::type_repetition_in_bounds, clippy::wildcard_imports)]
+#![no_std]
+
+#[cfg(any(
+    stm32_mcu = "stm32f405",
+    stm32_mcu = "stm32f407",
+    stm32_mcu = "stm32f415",
+    stm32_mcu = "stm32f417",
+    stm32_mcu = "stm32f427",
+    stm32_mcu = "stm32f429",
+    stm32_mcu = "stm32f437",
+    stm32_mcu = "stm32f439",
+))]
+mod f4;
+
+#[cfg(any(
+    stm32_mcu = "stm32f405",
+    stm32_mcu = "stm32f407",
+    stm32_mcu = "stm32f415",
+    stm32_mcu = "stm32f417",
+    stm32_mcu = "stm32f427",
+    stm32_mcu = "stm32f429",
+    stm32_mcu = "stm32f437",
+    stm32_mcu = "stm32f439",
+))]
+pub use self::f4::*;
diff --git a/src/periph/mod.rs b/src/periph/mod.rs
index 0865b0e..b66ace5 100644
--- a/src/periph/mod.rs
+++ b/src/periph/mod.rs
@@ -9,6 +9,8 @@ pub extern crate drone_stm32_map_periph_adc as adc;
 pub extern crate drone_stm32_map_periph_dma as dma;
 #[cfg(feature = "exti")]
 pub extern crate drone_stm32_map_periph_exti as exti;
+#[cfg(feature = "flash")]
+pub extern crate drone_stm32_map_periph_flash as flash;
 #[cfg(feature = "gpio")]
 pub extern crate drone_stm32_map_periph_gpio as gpio;
 #[cfg(feature = "i2c")]
diff --git a/tests/periph_macros.rs b/tests/periph_macros.rs
index dcc8e75..39eac81 100644
--- a/tests/periph_macros.rs
+++ b/tests/periph_macros.rs
@@ -404,6 +404,22 @@ fn periph_macros1() {
     {
         let exti40 = drone_stm32_map::periph::exti::periph_exti40!(reg);
     }
+    #[cfg(all(
+        feature = "flash",
+        any(
+            stm32_mcu = "stm32f405",
+            stm32_mcu = "stm32f407",
+            stm32_mcu = "stm32f415",
+            stm32_mcu = "stm32f417",
+            stm32_mcu = "stm32f427",
+            stm32_mcu = "stm32f429",
+            stm32_mcu = "stm32f437",
+            stm32_mcu = "stm32f439",
+        )
+    ))]
+    {
+        let flash = drone_stm32_map::periph::flash::periph_flash!(reg);
+    }
     #[cfg(all(
         feature = "gpio",
         any(