Microchip Technology megaAVR 0 Series Manual page 34

5.8.2.4 System Configuration 0
Name: SYSCFG0
Offset: 0x05
Reset: 0xC4
Property: -
Bit 7
CRCSRC[1:0]
Access
R
Reset 1
Bits 7:6 – CRCSRC[1:0] CRC Source
See the CRC description for more information about the functionality.
Value Name
00 FLASH
01 BOOT
10 BOOTAPP
11 NOCRC
Bit 3 – RSTPINCFG Reset Pin Configuration
This bit selects the pin configuration for the reset pin.
Value Description
0x0 GPIO
0x1 RESET
Bit 0 – EESAVE EEPROM Save During Chip Erase
If the device is locked the EEPROM is always erased by a chip erase, regardless of this bit.
Value Description
0 EEPROM erased during chip erase
1 EEPROM not erased under chip erase
©
2018 Microchip Technology Inc.
6 5
R
1
Description
CRC of full Flash (boot, application code, and application data)
CRC of boot section
CRC of application code and boot sections
No CRC
4 3
RSTPINCFG
R
0
Datasheet Preliminary
®
megaAVR 0-Series
Memories
2 1
EESAVE
DS40002015A-page 34
0
R
0