参数资料
型号: M58WR064KU70ZA6U
厂商: NUMONYX
元件分类: PROM
英文描述: 4M X 16 FLASH 1.8V PROM, 70 ns, PBGA44
封装: 7.50 X 5 MM, 0.50 MM PITCH, ROHS COMPLIANT, VFBGA-44
文件页数: 11/122页
文件大小: 2187K
代理商: M58WR064KU70ZA6U
Flowcharts and pseudocodes
M58WRxxxKU, M58WRxxxKL
108/123
Figure 24.
Block erase flowchart and pseudocode
1.
If an error is found, the status register must be cleared before further program/erase operations.
2.
Any address within the bank can equally be used.
3.
Amax is equal to A19 in the M58WR016KU/L, to A20 in the M58WR032KU/L, and to A21 in the M58WR064KU/L.
Write 20h (2)
AI13531
Start
Write Block
Address & D0h
Read Status
Register (2)
YES
NO
SR7 = 1
YES
NO
SR3 = 0
YES
SR4, SR5 = 1
VPP Invalid
Error (1)
Command
Sequence Error (1)
NO
SR5 = 0
Erase Error (1)
End
YES
NO
SR1 = 0
Erase to Protected
Block Error (1)
YES
erase_command ( blockToErase ) {
writeToFlash (blockToErase, 0x20) ;
/*see note (2) */
writeToFlash (blockToErase, 0xD0) ;
/* only ADQ12-ADQ15 and A16-Amax(3) are significant */
/* Memory enters read status state after
the Erase Command */
} while (status_register.SR7== 0) ;
do {
status_register=readFlash (blockToErase) ;
/* see note (2) */
/* E or G must be toggled*/
if (status_register.SR3==1) /*VPP invalid error */
error_handler ( ) ;
if ( (status_register.SR4==1) && (status_register.SR5==1) )
/* command sequence error */
error_handler ( ) ;
if (status_register.SR1==1) /*program to protect block error */
error_handler ( ) ;
if ( (status_register.SR5==1) )
/* erase error */
error_handler ( ) ;
}
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