參數(shù)資料
型號: ZTB500E
廠商: Electronic Theatre Controls, Inc.
英文描述: 4-BIT SINGLE CHIP MICROCOMPUTERS
中文描述: 4位單片機微機
文件頁數(shù): 37/49頁
文件大?。?/td> 328K
代理商: ZTB500E
4 - 6
Chapter 4. EPROM
Lock bit write mode (1/2)
RESETB
OSC
12.5V
CK1
CK2
CK3
K3 ~ K0
Lock Write ( 0100 )
0000
VCC
6V
0V
1110
10 times Repeat
12us X 10 = 120us
1
2
3
Lock bit write
2us at 500KHz
¨ ¨è
¨
¨
14.5clocks
Lock bit write mode (2/2)
START
¨
Reset
(Set Lock bit write mode)
¨è
Wait cycle
¨é
Write cycle *1
Count++
Count=10
RESETB=0V
VCC=0V
END
Count=0
Yes
No
*1 Repeat until near 100uS.
When 500KHz OSC1, repeat 10times
(12uS * 10 = 120uS)
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