Datasheet

21.3.1 Chip ID Register
Name: CHIPID_CIDR
Offset: 0x0
Reset: -
Property: Read-only
Bit 31 30 29 28 27 26 25 24
EXT NVPTYP[2:0] ARCH[7:4]
Access
R R R R R R R R
Reset
Bit 23 22 21 20 19 18 17 16
ARCH[3:0] SRAMSIZ[3:0]
Access
R R R R R R R R
Reset
Bit 15 14 13 12 11 10 9 8
NVPSIZ2[3:0] NVPSIZ[3:0]
Access
R R R R R R R R
Reset
Bit 7 6 5 4 3 2 1 0
EPROC[2:0] VERSION[4:0]
Access
R R R R R R R R
Reset
Bit 31 – EXT Extension Flag
Value Description
0
Chip ID has a single register definition without extension.
1
An extended Chip ID exists.
Bits 30:28 – NVPTYP[2:0] Nonvolatile Program Memory T
ype
Value Name Description
0
ROM ROM
1
ROMLESS ROMless or on-chip Flash
2
FLASH Embedded Flash Memory
3
ROM_FLASH ROM and Embedded Flash Memory
– NVPSIZ is ROM size
– NVPSIZ2 is Flash size
4
SRAM SRAM emulating ROM
Bits 27:20 – ARCH[7:0] Architecture Identifier
Value Name Description
0x10
SAM E70 SAM E70
0x11
SAM S70 SAM S70
0x12
SAM V71 SAM V71
0x13
SAM V70 SAM V70
Bits 19:16 – SRAMSIZ[3:0] Internal SRAM Size
Value Name Description
0
48K 48 Kbytes
1
192K 192 Kbytes
2
384K 384 Kbytes
SAM E70/S70/V70/V71 Family
Chip Identifier (CHIPID)
© 2019 Microchip T
echnology Inc.
Datasheet
DS60001527D-page 123