參數(shù)資料
型號： HD4046212R
廠商： Hitachi,Ltd.
英文描述： AS Microcomputer Incorporating a DTMF Generator Circuit(微計算機(jī)帶雙音多頻發(fā)生器電路)
中文描述： 由于微機(jī)安裝有雙音多頻發(fā)電機(jī)斷路器（微計算機(jī)帶雙音多頻發(fā)生器電路）
文件頁數(shù)： 121/155頁
文件大小： 549K
代理商： HD4046212R
HD404629R Series
121
PROM Reliability after Programming:
In general, semiconductor devices retain their reliability,
provided that some initial defects can be excluded. These initial defects can be detected and rejected by
screening. Baking devices under high-temperature conditions is one method of screening that can rapidly
eliminate data-hold defects in memory cells. (Refer to the previous Principles of Programming/Erasure
section.)
ZTAT microcomputer devices are extremely reliable because they have been subjected to such a
screening method during the wafer fabrication process, but Hitachi recommends that each device be
exposed to 150
°
C at one atmosphere for at least 48 hours after it is programmed, to ensure its best
performance. The recommended screening procedure is shown in figure 106.
Note:
If programming errors occur continuously during PROM programming, suspend programming and
check for problems in the PROM programmer or socket adapter. If programming verification
indicates errors in programming or after high-temperature exposure, please inform Hitachi.
Note: Exposure time is measured from when the temperature in the heater reaches 150°C.
*
Programming, verification
Exposure to high temperature, without power
150°C ± 10°C, 48 h
+8 h
0 h
–
*
Program read check
V = 4.5 V or 5.5 V
Figure 106 Recommended Screening Procedure
相關(guān)PDF資料
PDF描述
HD404628R AS Microcomputer Incorporating a DTMF Generator Circuit(微計算機(jī)帶雙音多頻發(fā)生器電路)
HD4074629 AS Microcomputer Incorporating a DTMF Generator Circuit(微計算機(jī)帶雙音多頻發(fā)生器電路)
HD404629R AS Microcomputer Incorporating a DTMF Generator Circuit(微計算機(jī)帶雙音多頻發(fā)生器電路)
HD404638R 4-Bit Single-Chip Microcomputer(4位單片微計算機(jī))
HD40A4638R 4-Bit Single-Chip Microcomputer(4位單片微計算機(jī))
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HD4046212RFS 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
HD4046212RH 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:AS Microcomputer Incorporating a DTMF Generator Circuit
HD4046212RTF 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
HD4046212TF 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
HD404628FS 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
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