參數(shù)資料
型號(hào): CAT28F512
英文描述: 512K-Bit CMOS Flash Memory(512K(64K x 8位)位CMOS閃速存儲(chǔ)器)
中文描述: 為512k位CMOS閃存(為512k(64K的× 8位)位的CMOS閃速存儲(chǔ)器)
文件頁數(shù): 12/14頁
文件大?。?/td> 97K
代理商: CAT28F512
CAT28F512
12
Preliminary
Doc. No. 25042-00 2/98 F-1
START
PROGRAMMING
APPLY VPPH
INITIALIZE
ADDRESS
PLSCNT = 0
WRITE SETUP
PROG. COMMAND
WRITE PROG. CMD
ADDR AND DATA
TIME OUT 10
μ
s
WRITE PROGRAM
VERIFY COMMAND
TIME OUT 6
μ
s
READ DATA
FROM DEVICE
VERIFY
DATA
LAST
ADDRESS
WRITE READ
COMMAND
APPLY VPPL
PROGRAMMING
COMPLETED
APPLY VPPL
PROGRAM
ERROR
INCREMENT
ADDRESS
INC
PLSCNT
= 25
NO
NO
NO
YES
YES
YES
STANDBY
WRITE
SETUP
VPP RAMPS TO VPPH
(OR VPP HARDWIRED)
BUS
OPERATION
COMMAND
COMMENTS
1ST WRITE
CYCLE
2ND WRITE
CYCLE
1ST WRITE
CYCLE
READ
STANDBY
1ST WRITE
CYCLE
STANDBY
PROGRAM
PROGRAM
VERIFY
READ
INITIALIZE ADDRESS
INITIALIZE PULSE COUNT
PLSCNT = PULSE COUNT
DATA = 40H
VALID ADDRESS AND DATA
WAIT
READ BYTE TO VERIFY
PROGRAMMING
COMPARE DATA OUTPUT
TO DATA EXPECTED
DATA = 00H
SETS THE REGISTER FOR
READ OPERATION
VPP RAMPS TO VPPL
(OR VPP HARDWIRED)
WAIT
DATA = C0H
Figure 7. Programming Algorithm
(1)
28F512 F09
Note:
(1)
The algorithm MUST BE FOLLOWED to ensure proper and reliable operation of the device.
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