diff --git a/stm32data/__main__.py b/stm32data/__main__.py
index d883047..76f8fa9 100755
--- a/stm32data/__main__.py
+++ b/stm32data/__main__.py
@@ -853,6 +853,7 @@ def parse_chips():
                         'kind': 'flash',
                         'address': h['defines']['all'][each + '_BASE'],
                         'size': size,
+                        'settings': memory.determine_flash_settings(chip_name),
                     })
 
             found = set()
diff --git a/stm32data/memory.py b/stm32data/memory.py
index 7815abe..4ef8cf3 100644
--- a/stm32data/memory.py
+++ b/stm32data/memory.py
@@ -45,13 +45,16 @@ memories = []
 
 def parse():
     for f in sorted(glob('sources/cubeprogdb/db/*.xml')):
-        #print("parsing ", f);
+        # print("parsing ", f);
         device = xmltodict.parse(open(f, 'rb'))['Root']['Device']
         device_id = device['DeviceID']
         name = device['Name']
         names = split_names(name)
         flash_size = None
         flash_addr = None
+        write_size = None
+        erase_size = None
+        erase_value = None
         ram_size = None
         ram_addr = None
 
@@ -69,7 +72,20 @@ def parse():
                     configs = [configs]
                 flash_addr = int(configs[0]['Parameters']['@address'], 16)
                 flash_size = int(configs[0]['Parameters']['@size'], 16)
-                #print( f'flash {addr} {size}')
+                erase_value = int(peripheral['ErasedValue'], 16)
+                write_size = int(configs[0]['Allignement'], 16)
+                bank = configs[0]['Bank']
+                if type(bank) != list:
+                    bank = [bank]
+                fields = bank[0]['Field']
+                if type(fields) != list:
+                    fields = [fields]
+
+                erase_size = int(fields[0]['Parameters']['@size'], 16)
+                for field in fields:
+                    # print("Field", field)
+                    erase_size = max(erase_size, int(field['Parameters']['@size'], 16))
+                    #print( f'flash {addr} {size}')
 
         chunk = {
             'device-id': int(device_id, 16),
@@ -86,6 +102,9 @@ def parse():
             chunk['flash'] = {
                 'address': flash_addr,
                 'bytes': flash_size,
+                'erase_value': erase_value,
+                'write_size': write_size,
+                'erase_size': erase_size,
             }
 
         memories.append(chunk)
@@ -108,6 +127,18 @@ def determine_flash_size(chip_name):
 
     return None
 
+def determine_flash_settings(chip_name):
+    for each in memories:
+        for name in each['names']:
+            if is_chip_name_match(name, chip_name):
+                return {
+                    'erase_size': each['flash']['erase_size'],
+                    'write_size': each['flash']['write_size'],
+                    'erase_value': each['flash']['erase_value'],
+                }
+
+    return None
+
 
 def determine_device_id(chip_name):
     for each in memories: