GD25LQ64C Datasheet, PDF (8/62 Pages) ELM Electronics – 64M-bit Serial Flash

GD25LQ64CxIGx 1.8V Uniform Sector Dual and Quad Serial Flash
Figure 1. Hold Condition
http://www.elm-tech.com
CS#
SCLK
HOLD#
HOLD
HOLD
5. DATA PROTECTION
The GD25LQ64C provides the following data protection methods:
♦ Write Enable (WREN) command: The WREN command is set the Write Enable Latch bit (WEL). The WEL
bit will return to reset by the following situation:
- Power-Up
- Write Disable (WRDI)
- Write Status Register (WRSR)
- Page Program (PP)
- Sector Erase (SE) / Block Erase (BE) / Chip Erase (CE)
- Erase Security Registers / Program Security Registers
♦ Software Protection Mode: The Block Protect (BP4, BP3, BP2, BP1 and BP0) bits define the section of the
memory array that can be read but not change.
♦ Hardware Protection Mode: WP# going low to protected the BP0~BP4 bits and SRP0~1 bits.
♦ Deep Power-Down Mode: In Deep Power-Down Mode, all commands are ignored except the Release from
Deep Power-Down Mode command.
Table 1. GD25LQ64C Protected area size (CMP=0)
Status Register Content
Memory Content
BP4 BP3 BP2 BP1 BP0
××000
00001
00010
00011
00100
00101
00110
01001
01010
01011
01100
01101
01110
Blocks
NONE
126 to 127
124 to 127
120 to 127
112 to 127
96 to 127
64 to 127
0 to 1
0 to 3
0 to 7
0 to 15
0 to 31
0 to 63
Addresses
NONE
7E0000H-7FFFFFH
7C0000H-7FFFFFH
780000H-7FFFFFH
700000H-7FFFFFH
600000H-7FFFFFH
400000H-7FFFFFH
000000H-01FFFFH
000000H-03FFFFH
000000H-07FFFFH
000000H-0FFFFFH
000000H-1FFFFFH
000000H-3FFFFFH
Density
NONE
128KB
256KB
512KB
1MB
2MB
4MB
128KB
256KB
512KB
1MB
2MB
4MB
Portion
NONE
Upper 1/64
Upper 1/32
Upper 1/16
Upper 1/8
Upper 1/4
Upper 1/2
Lower 1/64
Lower 1/32
Lower 1/16
Lower 1/8
Lower 1/4
Lower 1/2
62 - 8
Rev.1.0