IS25LE512M-RGLA3:P-TY datasheet(42/189 Pages) ISSI

42 / 189 page

IS25LE512M

IS25WE512M

Integrated Silicon Solution, Inc.- www.issi.com

Rev. A6

06/16/2025

Figure 7.1 Advanced

Sector/Block Protection

DYB 0

DYB 1

DYB 2

DYB 3

Sector/Block 0

Sector/Block 1

Sector/Block 2

Sector/Block 3

PPB 0

PPB 1

PPB 2

PPB 3

DYB N-3

DYB N-2

DYB N-1

DYB N

Sector/Block N-3

Sector/Block N-2

Sector/Block N-1

Sector/Block N

PPB N-3

PPB N-2

PPB N-1

PPB N

0 = Locked

64-bit Password

(OTP)

Password Protection

Mode (ASPR[2]=0

Persistent Protection

Mode (ASPR[1]=0

ASP Register Bits (OTP)

PPB

Memory Array

DYB

1. 0 = Sector/Block Protected

1 = Sector/Block Unprotected (default)

DYBs are volatile and defaults to “1”

after power-up

1. 0 = Sector/Block Protected

1 = Sector/Block Unprotected

2. PPB bits are programmed individually,

but erased collectively

The bit defaults to “1” (Persistent Protection mode)

or “0” (Password Protection mode) upon reset.

“0” locks all PPB bits to their current state.

3. Password Protection mode requires a password to

set PPB Lock bit to “1” to enable program or

erase of PPB bits.

4. Persistent Protection mode only allows PPB Lock

bit to be cleared to “0” to prevent program or erase

PPB bits. Power off or hardware reset is required to

set PPB Lock bit to “1”.

1 = Unocked

PPB Lock Bit

(Volatile)

Notes:

1. 512M (64KB Block): N = 1053 = 32 (32xTop 4KB sectors or 32xBottom 4KB sectors) + 1022 (1022x64KB blocks) - 1

2. 512M (256KB Block): N = 255 = 0 + 256 (256x256KB blocks) - 1

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