M28W640HCB70ZB6E NUMONYX, M28W640HCB70ZB6E Datasheet - Page 64

• Manufacturer Part Number: M28W640HCB70ZB6E
• Manufacturer: NUMONYX

Specifications of M28W640HCB70ZB6E

• Cell Type: NOR
• Density: 64Mb
• Access Time (max): 70ns
• Interface Type: Parallel
• Boot Type: Bottom
• Address Bus: 22b
• Operating Supply Voltage (typ): 3.3V
• Operating Temp Range: -40C to 85C
• Package Type: TFBGA
• Sync/async: Asynchronous
• Operating Temperature Classification: Industrial
• Operating Supply Voltage (min): 2.7V
• Operating Supply Voltage (max): 3.6V
• Word Size: 16b
• Number Of Words: 4M
• Supply Current: 18mA
• Mounting: Surface Mount
• Pin Count: 48
• Lead Free Status / RoHS Status: Compliant

Figure 20. Erase Suspend & Resume flowchart and pseudocode
64/72
Block Protect/Unprotect/Lock
Program/Protection Program
Erase Continues
Read data from
another block
Read Status
Write B0h
Write FFh
Write D0h
Write 70h
Register
b7 = 1
b6 = 1
Start
or
or
YES
YES
NO
NO
Erase Complete
Read Data
Write FFh
erase_suspend_command ( ) {
if (status_register.b6==0) /*erase completed */
else
}
do {
writeToFlash (any_address, 0xB0) ;
writeToFlash (any_address, 0x70) ;
/* read status register to check if
erase has already completed */
} while (status_register.b7== 0) ;
{ writeToFlash (any_address, 0xFF) ;
{ writeToFlash (any_address, 0xFF) ;
}
}
status_register=readFlash (any_address) ;
/* E or G must be toggled*/
read_data ( ) ;
/*read data from another block*/
/*The device returns to Read Array
(as if program/erase suspend was not issued).*/
read_program_data ( );
/*read or program data from another address*/
writeToFlash (any_address, 0xD0) ;
/*write 0xD0 to resume erase*/
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