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U3750BM 参数 Datasheet PDF下载

U3750BM图片预览
型号: U3750BM
PDF下载: 下载PDF文件 查看货源
内容描述: 单芯片电话线路 [One Chip Telephone Circuit]
分类和应用: 电信电路电话电路
文件页数/大小: 20 页 / 206 K
品牌: TEMIC [ TEMIC SEMICONDUCTORS ]
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U3750BM  
TELEFUNKEN Semiconductors  
If the redial is ordered after a manual dialing the redial is between these two codes: code 16 always erases the  
executed according to the digits already transmitted in redial, code 23 inhibits a later redial if it is transmitted  
line.  
after or before dialing codes. The following examples  
illustrates this.  
The redial is effective if the comparison digit-by-digit of  
all digits is correct. It is not produced if the comparison  
is incorrect or if the number of digits exceeded the last  
capacity of the redial. During redial, entry codes are  
accepted.  
Transmitted Codes  
16  
On Line  
1 2 3  
–nothing  
1 2 3  
Redial  
1 2 3  
Redial  
1 2 3  
Redial  
1 2 3  
1 2 3  
1 2 3 4  
4
1 2 3 4  
Procedure with *  
23  
16  
Storage does not pertain to the “*” code and the codes  
entered after it when the manual dialing starts with a  
numeric code or A, B, C, D, #, or pause codes. If the  
dialing starts with the “*” code, all codes can be stored.  
4
4
23  
R
Redial  
Note: the “#” code is treated for storage like a number.  
1 2 3  
Redial  
1 2 3 R  
16  
23  
Procedure with flash  
1 2 3  
Redial  
R
1 2 3 R  
1 2 3  
The flash pulse does not reset the content of the RAM.  
Example: 1 2 3 R  
Redial  
Redial  
1 2 3 R 1 2 3  
1 2 3  
Special Case  
Erasing redial  
When the overflow flag is set and when the written  
The erasing is possible through the serial bus with the address counter becomes equal to the read address  
decimal codes 16 and 23. There is not much difference counter, the codes are not stored.  
Dimensions in mm  
Package: PLCC 44  
Rev. A1: 16.07.1996  
19 (20)  
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