参数资料
型号: CAT28F020LI12
厂商: ON Semiconductor
文件页数: 12/16页
文件大小: 0K
描述: IC FLASH 2MBIT 120NS 32DIP
产品变化通告: Catalyst Group Product Obsolescence 26/Apr/2010
标准包装: 11
格式 - 存储器: 闪存
存储器类型: FLASH
存储容量: 2M (256K x 8)
速度: 120ns
接口: 并联
电源电压: 4.5 V ~ 5.5 V
工作温度: -40°C ~ 85°C
封装/外壳: 32-DIP(0.600",15.24mm)
供应商设备封装: 32-PDIP
包装: 管件
产品目录页面: 808 (CN2011-ZH PDF)
其它名称: 28F020LI-12
CAT28F020LI-12
CAT28F020LI-12-ND
CAT28F020
Figure 7. Programming Algorithm (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
BUS
OPERATION
STANDBY
1ST WRITE
CYCLE
2ND WRITE
CYCLE
1ST WRITE
CYCLE
READ
COMMAND
WRITE
SETUP
PROGRAM
PROGRAM
VERIFY
COMMENTS
VPP RAMPS TO VPPH
(OR VPP HARDWIRED)
INITIALIZE ADDRESS
INITIALIZE PULSE COUNT
PLSCNT = PULSE COUNT
DATA = 40H
VALID ADDRESS AND DATA
WAIT
DATA = C0H
WAIT
READ BYTE TO VERIFY
PROGRAMMING
NO
VERIFY
DATA ?
NO
INC
PLSCNT
= 25 ?
STANDBY
COMPARE DATA OUTPUT
TO DATA EXPECTED
YES
YES
INCREMENT
ADDRESS
NO
LAST
ADDRESS?
YES
WRITE READ
COMMAND
1ST WRITE
CYCLE
READ
DATA = 00H
SETS THE REGISTER FOR
READ OPERATION
APPLY VPPL
PROGRAMMING
COMPLETED
APPLY VPPL
PROGRAM
ERROR
STANDBY
VPP RAMPS TO VPPL
(OR VPP HARDWIRED)
Note:
(1) The algorithm MUST BE FOLLOWED to ensure proper and reliable operation of the device.
5108 FHD F06
Doc. No. MD-1029, Rev. F
12
? 2009 SCILLC. All rights reserved.
Characteristics subject to change without notice
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