- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄45390 > MSM6542-03RS (OKI ELECTRIC INDUSTRY CO LTD) 0 TIMER(S), REAL TIME CLOCK, PDIP24 PDF資料下載
參數(shù)資料
| 型號： | MSM6542-03RS |
| 廠商： | OKI ELECTRIC INDUSTRY CO LTD |
| 元件分類： | 時鐘/數(shù)據(jù)恢復及定時提取 |
| 英文描述： | 0 TIMER(S), REAL TIME CLOCK, PDIP24 |
| 封裝： | 0.600 INCH, PLASTIC, DIP-24 |
| 文件頁數(shù)： | 24/54頁 |
| 文件大?。?/td> | 406K |
| 代理商： | MSM6542-03RS |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁當前第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁
Semiconductor
MSM6542-01/02/03
97
USAGE
Pattern layout
The oscillation stage of the 32.768 kHz oscillator circuit is at a high impedance to achieve very
low power dissipation. In addition, since sine waves are produced at as low as 32.768 kHz,
oscillation waves stay near the threshold for a longer time. For this reason, countermeasures
must be taken against power supply noise and external noise from the viewpoint of an analog
IC.
Countermeasures against power supply noise
Insert a 4.7
F tantalum capacitor and 0.01 F ceramic capacitor as close to the IC as possible.
When another IC (for example, backup RAM) is used in the battery-backed circuit, also insert
a by pass capacitor in that IC.
Countermeasures against external noise
Place the crystal for the oscillator circuit and the capacitors as close to the IC as possible. Do not
route other signal lines in the oscillator circuit regardless of whether the oscillator circuit is
placed on the front or back of the PC board.
Sufficiently separate the XT and XT signal lines from the other signal lines regardless of whether
these signal lines are running on the fron or back of the PC board (see a.. and b.. of the figure
below).
For the MSM6542-01/02
For the MSM6542-03
VDD
XT XT
a
b
2
1
1 ≥ 7.5 mm
≥ 5 mm
2
From VSS pin
Pass
capacitor
VDD
XT XT
a
b
2
1
1 ≥ 0.3 INCH
≥ 0.2 INCH
2
From pin 12 (VSS)
NC
Enclose the VDD
line oscillation
section
VDD
XT XT
a
b
2
1
From VSS pin
Bypass
capacitor
VDD
XT XT
a
b
2
1
From pin 12 (VSS)
NC
Bypass
capacitor
相關PDF資料 |
PDF描述 |
|---|---|
| MSM65513-GS-VK | 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP64 |
| MSM65513-JS | 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PQCC68 |
| MSM65513-XXSS | 8-BIT, MROM, 10 MHz, MICROCONTROLLER, PDIP64 |
| MSM65513GS | 8-BIT, MROM, 10 MHz, MICROCONTROLLER, PQFP64 |
| MSM65X512JS | 8-BIT, 10 MHz, MICROCONTROLLER, PQCC44 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MSM6544 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:42-DOT LCD DRIVER |
| MSM6544GS-2KR1 | 制造商:ROHM Semiconductor 功能描述: |
| MSM6545 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Operatable at 0.9 V and Built-in Buzzer Circuit 4-Bit Microcontroller |
| MSM6545L | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Operatable at 0.9 V and Built-in Buzzer Circuit 4-Bit Microcontroller |
| MSM6545L-XXGS-2K | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Operatable at 0.9 V and Built-in Buzzer Circuit 4-Bit Microcontroller |
發(fā)布緊急采購，3分鐘左右您將得到回復。