24CSM01-ESLASHP datasheet(25/63 Pages) MICROCHIP

25 / 63 page

 2023 Microchip Technology Inc. and its subsidiaries

Preliminary

DS20006781B

-page 25

24CSM01

Software Write Protection Memory Zone bits

(SWP[7:0]): These bits divide the memory array into

eight separate 128-Kbit (16,384-byte) zones. Each

zone can be set independently from the seven other

protection zones. The corresponding SWP bit should

be set to a logic ‘1’ to write-protect that zone. All of the

eight SWP bits are set to logic ‘0’ as a factory default.

For additional information on the Software Write

Protection scheme, refer to Section 6.6.2 “Enhanced

Software Write Protection Mode”.

CONFIGURATION REGISTER – BYTE 1

R/W

SWP7

SWP6

SWP5

SWP4

SWP3

SWP2

SWP1

SWP0

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

If EWPM = ‘1’:

bit 7

SWP7: Software Write Protection Memory Zone 7 bit

1 = Memory Zone 7 (1C000h - 1FFFFh) is write-protected

0 = Memory Zone 7 (1C000h - 1FFFFh) is not write-protected

bit 6

SWP6: Software Write Protection Memory Zone 6 bit

1 = Memory Zone 6 (18000 - 1BFFFh) is write-protected

0 = Memory Zone 6 (18000 - 1BFFFh) is not write-protected

bit 5

SWP5: Software Write Protection Memory Zone 5 bit

1 = Memory Zone 5 (14000h - 17FFFh) is write-protected

0 = Memory Zone 5 (14000h - 17FFFh) is not write-protected

bit 4

SWP4: Software Write Protection Memory Zone 4 bit

1 = Memory Zone 4 (10000h - 13FFFh) is write-protected

0 = Memory Zone 4 (10000h - 13FFFh) is not write-protected

bit 3

SWP3: Software Write Protection Memory Zone 3 bit

1 = Memory Zone 3 (0C000h - 0FFFFh) is write-protected

0 = Memory Zone 3 (0C000h - 0FFFFh) is not write-protected

bit 2

SWP2: Software Write Protection Memory Zone 2 bit

1 = Memory Zone 2 (08000h - 0BFFFh) is write-protected

0 = Memory Zone 2 (08000h - 0BFFFh) is not write-protected

bit 1

SWP1: Software Write Protection Memory Zone 1 bit

1 = Memory Zone 1 (04000h - 07FFFh) is write-protected

0 = Memory Zone 1 (04000h - 07FFFh) is not write-protected

bit 0

SWP0: Software Write Protection Memory Zone 0 bit

1 = Memory Zone 0 (00000h - 03FFFh) is write-protected

0 = Memory Zone 0 (00000h - 03FFFh) is not write-protected

If EWPM = ‘0’:

bit 7-0

Unused

Note:

In Legacy Hardware Write Protection

mode (EWPM = ‘0’, the SWP[7:0] bits are

ignored. However, a dummy value must

still be sent during the write sequence to

initiate the internal write operation.

24CSM01-E/P 数据表(PDF) 25 Page - Microchip Technology

24CSM01-E/P 数据表(HTML) 25 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63

数据表下载