RC28F256 Intel Corporation, RC28F256 Datasheet - Page 73

• Manufacturer Part Number: RC28F256
• Description: Intel StrataFlash Embedded Memory
• Manufacturer: Intel Corporation

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.
Figure 33.
13.3.1
13.3.2
Datasheet
Protection Register Map
Reading the Protection Registers
The Protection Registers can be read from any address. To read the Protection Register, first issue
the Read Device Identifier command at any address to place the device in the Read Device
Identifier state (see
using the address offset corresponding to the register to be read.
Information” on page 77
Register data is read 16 bits at a time.
Programming the Protection Registers
To program any of the Protection Registers, first issue the Program Protection Register command
at the parameter’s base address plus the offset to the desired Protection Register (see
“Device Commands” on page
Protection Register address (see
Intel StrataFlash
0x109
0x102
0x8A
0x91
0x89
0x88
0x85
0x84
0x81
0x80
Section 9.2, “Device Commands” on page
Order Number: 306666, Revision: 001
15 14 13 12 11 10 9
15 14 13 12 11 10 9
shows the address offsets of the Protection Registers and Lock Registers.
128-bit Protection Register 16
128-bit Protection Register 1
128-Bit Protection Register 0
50). Next, write the desired Protection Register data to the same
(Factory-Programmed)
Figure 33, “Protection Register Map” on page
(User-Programmable)
(User-Programmable)
(User-Programmable)
®
Lock Register 1
64-bit Segment
64-bit Segment
Lock Register 0
Embedded Memory (P30)
8
8
7
7
6
6
5
5
4
4
3
3
2
2
1
1
0
0
50). Next, perform a read operation
Table 29, “Device Identifier
1-Gbit P30 Family
73).
Section 9.2,
April 2005
73