M28W640ECB90N6 STMicroelectronics, M28W640ECB90N6 Datasheet - Page 50
![IC FLASH 64MBIT 90NS 48TSOP](/photos/7/26/72669/497-48-tsop_series_sml.jpg)
M28W640ECB90N6
Manufacturer Part Number
M28W640ECB90N6
Description
IC FLASH 64MBIT 90NS 48TSOP
Manufacturer
STMicroelectronics
Datasheet
1.M28W640ECB90N6.pdf
(55 pages)
Specifications of M28W640ECB90N6
Format - Memory
FLASH
Memory Type
FLASH - Nor
Memory Size
64M (4M x 16)
Speed
90ns
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
Contains lead / RoHS non-compliant
Other names
497-1698
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
M28W640ECT, M28W640ECB
Figure 23. Locking Operations Flowchart and Pseudo Code
50/55
01h, D0h or 2Fh
Read Block
Lock States
confirmed?
Write FFh
Write 60h
Write 90h
Locking
change
Write
Start
End
YES
NO
locking_operation_command (address, lock_operation) {
}
writeToFlash (any_address, 0xFF) ; /*Reset to Read Array mode*/
writeToFlash (any_address, 0x60) ; /*configuration setup*/
if (lock_operation==LOCK) /*to protect the block*/
else if (lock_operation==UNLOCK) /*to unprotect the block*/
else if (lock_operation==LOCK-DOWN) /*to lock the block*/
if (readFlash (address) ! = locking_state_expected)
writeToFlash (address, 0x01) ;
writeToFlash (address, 0xD0) ;
writeToFlash (address, 0x2F) ;
writeToFlash (any_address, 0x90) ;
/*Check the locking state (see Read Block Signature table )*/
error_handler () ;
AI04364