5.6.2 Linear Data Memory

The linear data memory is the region from FSR address 0x2000 to FSR address 0x2FEF. This region is a virtual region that points back to the 80-byte blocks of GPR memory in all the banks. Refer to Figure 5-10 for the Linear Data Memory Map.

Important: The address range 0x2000 to 0x2FEF represents the complete addressable Linear Data Memory for PIC® devices (up to Bank 50). The actual implemented Linear Data Memory will differ from one device to the other in a family. Refer to the table below for the memory limits of PIC16(L)F18425/45 devices.

Table 5-4. General Purpose RAM Distribution
Bank #	{bank:offset}	Linear address	PIC16(L)F18425	PIC16(L)F18445
0	0x020-0x06F	0x2000-0x204F	80	80
1	0x0A0-0x0EF	0x2050-0x209F	80	80
2	0x120-0x16F	0x20A0-0x20EF	80	80
3	0x1A0-0x1EF	0x20F0-0x213F	80	80
4	0x220-0x26F	0x2140-0x218F	80	80
5	0x2A0-0x2EF	0x2190-0x21DF	80	80
6	0x320-0x36F	0x21E0-0x222F	80	80
7	0x3A0-0x3EF	0x2230-0x227F	80	80
8	0x420-0x46F	0x2280-0x22CF	80	80
9	0x4A0-0x4EF	0x22D0-0x231F	80	80
10	0x520-0x56F	0x2320-0x236F	80	80
11	0x5A0-0x5EF	0x2370-0x23BF	80	80
12	0x620-0x64F 0x620-0x66F	0x23C0-0x23EF 0x23C0-0x240F	48	80
13	0x6A0-0x6EF	0x2410-0x245F		80
14	0x720-0x76F	0x2460-0x24AF		80
15	0x7A0-0x7EF	0x24B0-0x24FF		80
16	0x820-0x86F	0x2500-0x254F		80
17	0x8A0-0x8EF	0x2550-0x259F		80
18	0x920-0x96F	0x25A0-0x25EF		80
19	0x9A0-0x9EF	0x25F0-0x263F		80
20	0xA20-0xA6F	0x2640-0x268F		80
21	0xAA0-0xAEF	0x2690-0x26DF		80
22	0xB20-0xB6F	0x26E0-0x272F		80
23	0xBA0-0xBEF	0x2730-0x277F		80
24	0xC20-0xC6F	0x2780-0x27CF		80
25	0xCA0-0xCBF	0x27D0-0x27EF		32

Unimplemented memory reads as 0x00. Use of the linear data memory region allows buffers to be larger than 80 bytes because incrementing the FSR beyond one bank will go directly to the GPR memory of the next bank.

The 16 bytes of common memory are not included in the linear data memory region.