mx25l12805d Macronix International Co., mx25l12805d Datasheet - Page 18

• Manufacturer Part Number: mx25l12805d
• Description: 128m-bit [x 1] Cmos Serial Flash
• Manufacturer: Macronix International Co.

Table of ID Definitions:
(15) Enter Secured OTP (ENSO)
The ENSO instruction is for entering the additional 512-bit secured OTP mode. The additional 512-bit secured OTP is
independent from main array, which may use to store unique serial number for system identifier. After entering the Secured
OTP mode, and then follow standard read or program, procedure to read out the data or update data. The Secured OTP
data cannot be updated again once it is lock-down.
The sequence of issuing ENSO instruction is: CS# goes low-> sending ENSO instruction to enter Secured OTP mode
-> CS# goes high.
Please note that WRSR/WRSCUR commands are not acceptable during the access of secure OTP region, once security
OTP is lock down, only read related commands are valid.
(16) Exit Secured OTP (EXSO)
The EXSO instruction is for exiting the additional 512-bit secured OTP mode.
The sequence of issuing EXSO instruction is: CS# goes low-> sending EXSO instruction to exit Secured OTP mode->
CS# goes high.
P/N: PM1310
(14) Read Electronic Manufacturer ID & Device ID (REMS)
The REMS instruction is an alternative to the Release from Power-down/Device ID instruction that provides both the
JEDEC assigned manufacturer ID and the specific device ID.
The REMS instruction is very similar to the Release from Power-down/Device ID instruction. The instruction is initiated
by driving the CS# pin low and shift the instruction code "90h" followed by two dummy bytes and one bytes address
(A7~A0). After which, the Manufacturer ID for MXIC (C2h) and the Device ID are shifted out on the falling edge of SCLK
with most significant bit (MSB) first as shown in Figure 26. The Device ID values are listed in Table of ID Definitions on
page 20. If the one-byte address is initially set to 01h, then the device ID will be read first and then followed by the
Manufacturer ID. The Manufacturer and Device IDs can be read continuously, alternating from one to the other. The
instruction is completed by driving CS# high.
1. RDID:
MX25L12805D
2. RES:
MX25L12805D
3. REMS:
MX25L12805D
manufacturer ID
manufacturer ID
C2
C2
18
memory type
electronic ID
20
MX25L12805D
17
device ID
17
memory density
18
REV. 1.1, OCT. 01, 2008