diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2bde91f5..217eaa0c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,6 +16,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/).
   Add `width`, `offset` methods
 - *breaking change* Always numerates field arrays from 0
 - Support of default value for `EnumeratedValues`
+- move `Config` to `config` module
 
 ## [v0.30.3] - 2023-11-19
 
diff --git a/src/config.rs b/src/config.rs
new file mode 100644
index 00000000..e1c07c7e
--- /dev/null
+++ b/src/config.rs
@@ -0,0 +1,98 @@
+use anyhow::{bail, Result};
+use std::path::{Path, PathBuf};
+
+#[cfg_attr(feature = "serde", derive(serde::Deserialize))]
+#[derive(Clone, PartialEq, Eq, Debug, Default)]
+#[cfg_attr(feature = "serde", serde(default))]
+pub struct Config {
+    pub target: Target,
+    pub atomics: bool,
+    pub atomics_feature: Option<String>,
+    pub generic_mod: bool,
+    pub make_mod: bool,
+    pub ignore_groups: bool,
+    pub keep_list: bool,
+    pub strict: bool,
+    pub pascal_enum_values: bool,
+    pub feature_group: bool,
+    pub feature_peripheral: bool,
+    pub max_cluster_size: bool,
+    pub impl_debug: bool,
+    pub impl_debug_feature: Option<String>,
+    pub output_dir: Option<PathBuf>,
+    pub input: Option<PathBuf>,
+    pub source_type: SourceType,
+    pub log_level: Option<String>,
+    pub interrupt_link_section: Option<String>,
+    pub reexport_core_peripherals: bool,
+    pub reexport_interrupt: bool,
+}
+
+#[allow(clippy::upper_case_acronyms)]
+#[allow(non_camel_case_types)]
+#[cfg_attr(feature = "serde", derive(serde::Deserialize))]
+#[derive(Clone, Copy, PartialEq, Eq, Debug, Default)]
+pub enum Target {
+    #[cfg_attr(feature = "serde", serde(rename = "cortex-m"))]
+    #[default]
+    CortexM,
+    #[cfg_attr(feature = "serde", serde(rename = "msp430"))]
+    Msp430,
+    #[cfg_attr(feature = "serde", serde(rename = "riscv"))]
+    RISCV,
+    #[cfg_attr(feature = "serde", serde(rename = "xtensa-lx"))]
+    XtensaLX,
+    #[cfg_attr(feature = "serde", serde(rename = "mips"))]
+    Mips,
+    #[cfg_attr(feature = "serde", serde(rename = "none"))]
+    None,
+}
+
+impl Target {
+    pub fn parse(s: &str) -> Result<Self> {
+        Ok(match s {
+            "cortex-m" => Target::CortexM,
+            "msp430" => Target::Msp430,
+            "riscv" => Target::RISCV,
+            "xtensa-lx" => Target::XtensaLX,
+            "mips" => Target::Mips,
+            "none" => Target::None,
+            _ => bail!("unknown target {}", s),
+        })
+    }
+}
+
+#[cfg_attr(
+    feature = "serde",
+    derive(serde::Deserialize),
+    serde(rename_all = "lowercase")
+)]
+#[derive(Clone, Copy, PartialEq, Eq, Debug, Default)]
+pub enum SourceType {
+    #[default]
+    Xml,
+    #[cfg(feature = "yaml")]
+    Yaml,
+    #[cfg(feature = "json")]
+    Json,
+}
+
+impl SourceType {
+    /// Make a new [`SourceType`] from a given extension.
+    pub fn from_extension(s: &str) -> Option<Self> {
+        match s {
+            "svd" | "xml" => Some(Self::Xml),
+            #[cfg(feature = "yaml")]
+            "yml" | "yaml" => Some(Self::Yaml),
+            #[cfg(feature = "json")]
+            "json" => Some(Self::Json),
+            _ => None,
+        }
+    }
+    pub fn from_path(path: &Path) -> Self {
+        path.extension()
+            .and_then(|e| e.to_str())
+            .and_then(Self::from_extension)
+            .unwrap_or_default()
+    }
+}
diff --git a/src/generate/device.rs b/src/generate/device.rs
index 713d6719..36413f63 100644
--- a/src/generate/device.rs
+++ b/src/generate/device.rs
@@ -6,9 +6,10 @@ use log::debug;
 use std::borrow::Cow;
 use std::fs::File;
 use std::io::Write;
+use std::path::Path;
 
-use crate::util::{self, Config, ToSanitizedCase};
-use crate::Target;
+use crate::config::{Config, Target};
+use crate::util::{self, ToSanitizedCase};
 use anyhow::{Context, Result};
 
 use crate::generate::{interrupt, peripheral};
@@ -139,7 +140,13 @@ pub fn render(d: &Device, config: &Config, device_x: &mut String) -> Result<Toke
     let generic_file = include_str!("generic.rs");
     let generic_atomic_file = include_str!("generic_atomic.rs");
     if config.generic_mod {
-        let mut file = File::create(config.output_dir.join("generic.rs"))?;
+        let mut file = File::create(
+            config
+                .output_dir
+                .as_deref()
+                .unwrap_or(Path::new("."))
+                .join("generic.rs"),
+        )?;
         writeln!(file, "{generic_file}")?;
         if config.atomics {
             if let Some(atomics_feature) = config.atomics_feature.as_ref() {
diff --git a/src/generate/peripheral.rs b/src/generate/peripheral.rs
index b03cd95e..df4a3120 100644
--- a/src/generate/peripheral.rs
+++ b/src/generate/peripheral.rs
@@ -6,6 +6,7 @@ use svd_parser::expand::{
     derive_cluster, derive_peripheral, derive_register, BlockPath, Index, RegisterPath,
 };
 
+use crate::config::Config;
 use crate::svd::{
     self, Cluster, ClusterInfo, MaybeArray, Peripheral, Register, RegisterCluster, RegisterInfo,
 };
@@ -15,8 +16,8 @@ use quote::{quote, ToTokens};
 use syn::{punctuated::Punctuated, Token};
 
 use crate::util::{
-    self, name_to_ty, path_segment, type_path, unsuffixed, zst_type, Config, FullName,
-    ToSanitizedCase, BITS_PER_BYTE,
+    self, name_to_ty, path_segment, type_path, unsuffixed, zst_type, FullName, ToSanitizedCase,
+    BITS_PER_BYTE,
 };
 use anyhow::{anyhow, bail, Context, Result};
 
diff --git a/src/generate/register.rs b/src/generate/register.rs
index 68637499..267f7138 100644
--- a/src/generate/register.rs
+++ b/src/generate/register.rs
@@ -13,8 +13,9 @@ use svd_parser::expand::{
     derive_enumerated_values, derive_field, BlockPath, EnumPath, FieldPath, Index, RegisterPath,
 };
 
+use crate::config::Config;
 use crate::util::{
-    self, ident_to_path, path_segment, replace_suffix, type_path, unsuffixed, Config, FullName,
+    self, ident_to_path, path_segment, replace_suffix, type_path, unsuffixed, FullName,
     ToSanitizedCase, U32Ext,
 };
 use anyhow::{anyhow, Result};
diff --git a/src/lib.rs b/src/lib.rs
index a801d78d..285247a7 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -538,10 +538,11 @@
 use quote::quote;
 use svd_parser::svd;
 
+pub mod config;
 pub mod generate;
 pub mod util;
 
-pub use crate::util::{Config, Target};
+pub use config::{Config, Target};
 
 #[non_exhaustive]
 pub struct Generation {
@@ -599,9 +600,9 @@ pub fn generate(input: &str, config: &Config) -> Result<Generation> {
     })
 }
 
-/// Load a [Device](svd::Device) from a string slice with given [config](crate::util::Config).
-pub fn load_from(input: &str, config: &crate::util::Config) -> Result<svd::Device> {
-    use self::util::SourceType;
+/// Load a [Device](svd::Device) from a string slice with given [config](crate::config::Config).
+pub fn load_from(input: &str, config: &Config) -> Result<svd::Device> {
+    use config::SourceType;
     use svd_parser::ValidateLevel;
 
     let mut device = match config.source_type {
diff --git a/src/main.rs b/src/main.rs
index fc989fb2..8151f20f 100755
--- a/src/main.rs
+++ b/src/main.rs
@@ -2,16 +2,17 @@
 
 use log::{debug, error, info};
 
-use std::fs::File;
 use std::io::Write;
 use std::process;
+use std::{fs::File, path::Path};
 
 use anyhow::{Context, Result};
 use clap::{Arg, ArgAction, Command};
 
 use svd2rust::{
+    config::{Config, SourceType, Target},
     generate, load_from,
-    util::{self, build_rs, Config, SourceType, Target},
+    util::{self, build_rs},
 };
 
 fn parse_configs(app: Command) -> Result<Config> {
@@ -216,7 +217,7 @@ fn run() -> Result<()> {
     if let Some(file) = config.input.as_ref() {
         config.source_type = SourceType::from_path(file)
     }
-    let path = &config.output_dir;
+    let path = config.output_dir.as_deref().unwrap_or(Path::new("."));
 
     info!("Parsing device from SVD file");
     let device = load_from(input, &config)?;
diff --git a/src/util.rs b/src/util.rs
index 4be04689..722a24cb 100644
--- a/src/util.rs
+++ b/src/util.rs
@@ -6,14 +6,13 @@ use inflections::Inflect;
 use proc_macro2::{Ident, Span, TokenStream};
 use quote::quote;
 use std::collections::HashSet;
-use std::path::{Path, PathBuf};
 use svd_rs::{MaybeArray, Peripheral, PeripheralInfo};
 
 use syn::{
     punctuated::Punctuated, token::PathSep, Lit, LitInt, PathArguments, PathSegment, Type, TypePath,
 };
 
-use anyhow::{anyhow, bail, Result};
+use anyhow::{anyhow, Result};
 
 pub const BITS_PER_BYTE: u32 = 8;
 
@@ -21,53 +20,6 @@ pub const BITS_PER_BYTE: u32 = 8;
 /// that are not valid in Rust ident
 const BLACKLIST_CHARS: &[char] = &['(', ')', '[', ']', '/', ' ', '-'];
 
-#[cfg_attr(feature = "serde", derive(serde::Deserialize))]
-#[derive(Clone, PartialEq, Eq, Debug)]
-pub struct Config {
-    #[cfg_attr(feature = "serde", serde(default))]
-    pub target: Target,
-    #[cfg_attr(feature = "serde", serde(default))]
-    pub atomics: bool,
-    #[cfg_attr(feature = "serde", serde(default))]
-    pub atomics_feature: Option<String>,
-    #[cfg_attr(feature = "serde", serde(default))]
-    pub generic_mod: bool,
-    #[cfg_attr(feature = "serde", serde(default))]
-    pub make_mod: bool,
-    #[cfg_attr(feature = "serde", serde(default))]
-    pub ignore_groups: bool,
-    #[cfg_attr(feature = "serde", serde(default))]
-    pub keep_list: bool,
-    #[cfg_attr(feature = "serde", serde(default))]
-    pub strict: bool,
-    #[cfg_attr(feature = "serde", serde(default))]
-    pub pascal_enum_values: bool,
-    #[cfg_attr(feature = "serde", serde(default))]
-    pub feature_group: bool,
-    #[cfg_attr(feature = "serde", serde(default))]
-    pub feature_peripheral: bool,
-    #[cfg_attr(feature = "serde", serde(default))]
-    pub max_cluster_size: bool,
-    #[cfg_attr(feature = "serde", serde(default))]
-    pub impl_debug: bool,
-    #[cfg_attr(feature = "serde", serde(default))]
-    pub impl_debug_feature: Option<String>,
-    #[cfg_attr(feature = "serde", serde(default = "current_dir"))]
-    pub output_dir: PathBuf,
-    #[cfg_attr(feature = "serde", serde(default))]
-    pub input: Option<PathBuf>,
-    #[cfg_attr(feature = "serde", serde(default))]
-    pub source_type: SourceType,
-    #[cfg_attr(feature = "serde", serde(default))]
-    pub log_level: Option<String>,
-    #[cfg_attr(feature = "serde", serde(default))]
-    pub interrupt_link_section: Option<String>,
-    #[cfg_attr(feature = "serde", serde(default))]
-    pub reexport_core_peripherals: bool,
-    #[cfg_attr(feature = "serde", serde(default))]
-    pub reexport_interrupt: bool,
-}
-
 #[derive(Clone, Debug, PartialEq, Eq)]
 pub enum Case {
     Constant,
@@ -103,107 +55,6 @@ impl Case {
     }
 }
 
-fn current_dir() -> PathBuf {
-    PathBuf::from(".")
-}
-
-impl Default for Config {
-    fn default() -> Self {
-        Self {
-            target: Target::default(),
-            atomics: false,
-            atomics_feature: None,
-            generic_mod: false,
-            make_mod: false,
-            ignore_groups: false,
-            keep_list: false,
-            strict: false,
-            pascal_enum_values: false,
-            feature_group: false,
-            feature_peripheral: false,
-            max_cluster_size: false,
-            impl_debug: false,
-            impl_debug_feature: None,
-            output_dir: current_dir(),
-            input: None,
-            source_type: SourceType::default(),
-            log_level: None,
-            interrupt_link_section: None,
-            reexport_core_peripherals: false,
-            reexport_interrupt: false,
-        }
-    }
-}
-
-#[allow(clippy::upper_case_acronyms)]
-#[allow(non_camel_case_types)]
-#[cfg_attr(feature = "serde", derive(serde::Deserialize))]
-#[derive(Clone, Copy, PartialEq, Eq, Debug, Default)]
-pub enum Target {
-    #[cfg_attr(feature = "serde", serde(rename = "cortex-m"))]
-    #[default]
-    CortexM,
-    #[cfg_attr(feature = "serde", serde(rename = "msp430"))]
-    Msp430,
-    #[cfg_attr(feature = "serde", serde(rename = "riscv"))]
-    RISCV,
-    #[cfg_attr(feature = "serde", serde(rename = "xtensa-lx"))]
-    XtensaLX,
-    #[cfg_attr(feature = "serde", serde(rename = "mips"))]
-    Mips,
-    #[cfg_attr(feature = "serde", serde(rename = "none"))]
-    None,
-}
-
-impl Target {
-    pub fn parse(s: &str) -> Result<Self> {
-        Ok(match s {
-            "cortex-m" => Target::CortexM,
-            "msp430" => Target::Msp430,
-            "riscv" => Target::RISCV,
-            "xtensa-lx" => Target::XtensaLX,
-            "mips" => Target::Mips,
-            "none" => Target::None,
-            _ => bail!("unknown target {}", s),
-        })
-    }
-}
-
-#[cfg_attr(
-    feature = "serde",
-    derive(serde::Deserialize),
-    serde(rename_all = "lowercase")
-)]
-#[derive(Clone, Copy, PartialEq, Eq, Debug, Default)]
-pub enum SourceType {
-    #[default]
-    Xml,
-    #[cfg(feature = "yaml")]
-    Yaml,
-    #[cfg(feature = "json")]
-    Json,
-}
-
-impl SourceType {
-    /// Make a new [`SourceType`] from a given extension.
-    pub fn from_extension(s: &str) -> Option<Self> {
-        match s {
-            "svd" | "xml" => Some(Self::Xml),
-            #[cfg(feature = "yaml")]
-            "yml" | "yaml" => Some(Self::Yaml),
-            #[cfg(feature = "json")]
-            "json" => Some(Self::Json),
-            _ => None,
-        }
-    }
-    pub fn from_path(path: &Path) -> Self {
-        path.extension()
-            .and_then(|e| e.to_str())
-            .and_then(Self::from_extension)
-            .unwrap_or_default()
-    }
-}
-
 /// Convert self string into specific case without overlapping to svd2rust internal names
 pub trait ToSanitizedCase {
     /// Convert self into PascalCase.