M29W400DB70N6 NUMONYX, M29W400DB70N6 Datasheet - Page 46

• Manufacturer Part Number: M29W400DB70N6
• Description: IC FLASH 4MBIT 70NS 48TSOP
• Manufacturer: NUMONYX
• Series: Axcell™r

Specifications of M29W400DB70N6

• Format - Memory: FLASH
• Memory Type: FLASH - Nor
• Memory Size: 4M (512K x 8 or 256K x 16)
• Speed: 70ns
• Interface: Parallel
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-TSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Block protection
46/48
Figure 22. In-system equipment chip unprotect flowchart
ISSUE READ/RESET
NO
COMMAND
RP = V IH
= 1000
FAIL
++n
YES
ADDRESS = CURRENT BLOCK ADDRESS
ADDRESS = CURRENT BLOCK ADDRESS
A0 = V IL , A1 = V IH , A6 = V IH
A0 = V IL , A1 = V IH , A6 = V IH
A0 = V IL , A1 = V IH , A6 = V IH
A0 = V IL , A1 = V IH , A6 = V IH
PROTECT ALL BLOCKS
CURRENT BLOCK = 0
ANY ADDRESS WITH
ANY ADDRESS WITH
NO
READ DATA
WRITE 60h
WRITE 60h
WRITE 40h
Wait 10 ms
RP = V ID
Wait 4 µs
START
DATA
n = 0
00h
=
YES
ISSUE READ/RESET
M29W400DT, M29W400DB
COMMAND
RP = V IH
BLOCK
PASS
LAST
YES
CURRENT BLOCK
INCREMENT
NO
AI03472