P30-65nm
Figure 13: OTP Register Map
0x109
128-bit OTP Register 16
(User-Programmable)
0x102
0x91
128-bit OTP Register 1
(User-Programmable)
0x8A
0x89
Lock Register 1
15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
0x88
64-bit Segment
(User-Programmable)
0x85
0x84
128-Bit OTP Register 0
64-bit Segment
(Factory-Programmed)
0x81
0x80
Lock Register 0
15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
11.3.1
11.3.2
Reading the OTP Registers
The OTP Registers can be read from OTP-RA address. To read the OTP Register, first
issue the Read Device Identifier command at OTP-RA address to place the device in the
Read Device Identifier state (see Section 6.2, “Device Command Bus Cycles” on
page 20). Next, perform a read operation using the address offset corresponding to the
register to be read. Table 8, “Device Identifier Information” on page 22 shows the
address offsets of the OTP Registers and Lock Registers. OTP Registers and Lock
Registers data is read 16 bits at a time.
Programming the OTP Registers
To program an OTP Register, first issue the OTP Register Program Setup command at
the device base address plus the offset address of the desired OTP Register location
(OTP-RA: see Figure 13, “OTP Register Map” on page 42). Next, write the desired OTP
Register data to the same OTP Register address. See Section 6.2, “Device Command
Bus Cycles” on page 20.
Datasheet
42
Sept 2012
Order Number: 208042-06
MICRON [ MICRON TECHNOLOGY ]
