diff --git a/stm32-data-gen/src/chips.rs b/stm32-data-gen/src/chips.rs
index 5ddd3c2..58c7f70 100644
--- a/stm32-data-gen/src/chips.rs
+++ b/stm32-data-gen/src/chips.rs
@@ -68,7 +68,7 @@ pub struct ChipGroup {
     chip_names: Vec<String>,
     xml: xml::Mcu,
     ips: HashMap<String, xml::Ip>,
-    pins: HashMap<stm32_data_serde::chip::core::peripheral::pin::Pin, xml::Pin>,
+    pins: HashMap<String, xml::Pin>,
     family: Option<String>,
     line: Option<String>,
     die: Option<String>,
@@ -480,18 +480,20 @@ fn merge_periph_pins_info(
     }
 
     // covert to hashmap
-    let af_pins: HashMap<(stm32_data_serde::chip::core::peripheral::pin::Pin, &str), Option<u8>> =
-        af_pins.iter().map(|v| ((v.pin, v.signal.as_str()), v.af)).collect();
+    let af_pins: HashMap<(&str, &str), Option<u8>> = af_pins
+        .iter()
+        .map(|v| ((v.pin.as_str(), v.signal.as_str()), v.af))
+        .collect();
 
     for pin in core_pins {
-        let af = af_pins.get(&(pin.pin, &pin.signal)).copied().flatten();
+        let af = af_pins.get(&(&pin.pin, &pin.signal)).copied().flatten();
 
         // try to look for a signal with another name
         let af = af.or_else(|| {
             if pin.signal == "CTS" {
                 // for some godforsaken reason UART4's and UART5's CTS are called CTS_NSS in the GPIO xml
                 // so try to match with these
-                af_pins.get(&(pin.pin, "CTS_NSS")).copied().flatten()
+                af_pins.get(&(pin.pin.as_str(), "CTS_NSS")).copied().flatten()
             } else if periph_name == "I2C1" {
                 // it appears that for __some__ STM32 MCUs there is no AFIO specified in GPIO file
                 // (notably - STM32F030C6 with it's I2C1 on PF6 and PF7)
@@ -887,7 +889,7 @@ fn process_core(
                     if let Some(signal) = signal.strip_prefix(&format!("{periph}_")) {
                         periph_pins.entry(periph.to_string()).or_default().push(
                             stm32_data_serde::chip::core::peripheral::Pin {
-                                pin: *pin_name,
+                                pin: pin_name.clone(),
                                 signal: signal.to_string(),
                                 af: None,
                             },
@@ -975,7 +977,7 @@ fn process_core(
             }
 
             p.pins.extend(i2s_pins.iter().map(|p| Pin {
-                pin: p.pin,
+                pin: p.pin.clone(),
                 signal: "I2S_".to_owned() + &p.signal,
                 af: p.af,
             }));
diff --git a/stm32-data-gen/src/gpio_af.rs b/stm32-data-gen/src/gpio_af.rs
index 54c0282..20353fa 100644
--- a/stm32-data-gen/src/gpio_af.rs
+++ b/stm32-data-gen/src/gpio_af.rs
@@ -38,16 +38,9 @@ mod xml {
     }
 }
 
-pub fn clean_pin(pin_name: &str) -> Option<stm32_data_serde::chip::core::peripheral::pin::Pin> {
-    // some H7s have analog-only pins like PC2_C, PC3_C. Ignore these for now since the
-    // data model can't deal with pins that are not part of a GPIO port yet.
-    if regex!(r"^P[A-Z]\d+_C$").is_match(pin_name) {
-        return None;
-    }
-
-    let pin_name = regex!(r"^P[A-Z]\d+").find(pin_name)?.as_str();
-
-    stm32_data_serde::chip::core::peripheral::pin::Pin::parse(pin_name)
+pub fn clean_pin(pin_name: &str) -> Option<String> {
+    // Some H7 chips have additonal "_C" pins.
+    Some(regex!(r"^P[A-Z]\d+(?:_C)?").find(pin_name)?.as_str().into())
 }
 
 #[derive(Debug, PartialEq, Eq)]
@@ -87,7 +80,7 @@ impl Af {
                     };
                     peris.entry(peri_name.to_string()).or_default().push(
                         stm32_data_serde::chip::core::peripheral::Pin {
-                            pin: pin_name,
+                            pin: pin_name.clone(),
                             signal: signal_name.to_string(),
                             af: afn,
                         },
diff --git a/stm32-data-serde/src/lib.rs b/stm32-data-serde/src/lib.rs
index dd44b07..39d8638 100644
--- a/stm32-data-serde/src/lib.rs
+++ b/stm32-data-serde/src/lib.rs
@@ -123,77 +123,12 @@ pub mod chip {
 
             #[derive(Clone, Debug, Eq, PartialEq, Hash, PartialOrd, Ord, Serialize, Deserialize)]
             pub struct Pin {
-                pub pin: pin::Pin,
+                pub pin: String,
                 pub signal: String,
                 #[serde(skip_serializing_if = "Option::is_none")]
                 pub af: Option<u8>,
             }
 
-            pub mod pin {
-                use serde::{Deserialize, Serialize};
-
-                #[derive(Clone, Copy, Debug, Eq, PartialEq, Hash, PartialOrd, Ord)]
-                pub struct Pin {
-                    pub port: char,
-                    pub num: u8,
-                }
-
-                impl Pin {
-                    pub fn parse(pin: &str) -> Option<Self> {
-                        let mut chars = pin.chars();
-                        let p = chars.next()?;
-                        if p != 'P' {
-                            return None;
-                        }
-                        let port = chars.next()?;
-                        let num = chars.as_str().parse().ok()?;
-
-                        Some(Self { port, num })
-                    }
-                }
-
-                impl std::fmt::Display for Pin {
-                    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-                        write!(f, "P{}{}", self.port, self.num)
-                    }
-                }
-
-                impl Serialize for Pin {
-                    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
-                    where
-                        S: serde::Serializer,
-                    {
-                        serializer.serialize_str(&format!("{self}"))
-                    }
-                }
-
-                struct PinVisitor;
-
-                impl<'de> serde::de::Visitor<'de> for PinVisitor {
-                    type Value = Pin;
-
-                    fn expecting(&self, formatter: &mut std::fmt::Formatter) -> std::fmt::Result {
-                        formatter.write_str("pin")
-                    }
-
-                    fn visit_str<E>(self, v: &str) -> Result<Self::Value, E>
-                    where
-                        E: serde::de::Error,
-                    {
-                        Ok(Pin::parse(v).unwrap())
-                    }
-                }
-
-                impl<'de> Deserialize<'de> for Pin {
-                    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-                    where
-                        D: serde::Deserializer<'de>,
-                    {
-                        deserializer.deserialize_str(PinVisitor)
-                    }
-                }
-            }
-
             #[derive(Clone, Debug, Eq, PartialEq, Hash, PartialOrd, Ord, Serialize, Deserialize)]
             pub struct Interrupt {
                 pub signal: String,