- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98007 > M41ST87WMX6T (STMICROELECTRONICS) 1 TIMER(S), REAL TIME CLOCK, PDSO28 PDF資料下載
參數(shù)資料
| 型號： | M41ST87WMX6T |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 時鐘/數(shù)據(jù)恢復(fù)及定時提取 |
| 英文描述： | 1 TIMER(S), REAL TIME CLOCK, PDSO28 |
| 封裝： | 0.300 INCH, PLASTIC, SOIC-28 |
| 文件頁數(shù)： | 22/38頁 |
| 文件大?。?/td> | 552K |
| 代理商： | M41ST87WMX6T |
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頁當(dāng)前第22頁第23頁第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
29/38
M41ST87Y, M41ST87W
Square Wave Output
The M41ST87Y/W offers the user a programma-
ble square wave function which is output on the
SQW/FT pin. RS3-RS0 bits located in 13h estab-
lish the square wave output frequency. These fre-
quencies are listed in Table 13. Once the selection
of the SQW frequency has been completed, the
SQW/FT pin can be turned on and off under soft-
ware control with the Square Wave Enable Bit
(SQWE) located in Register 0Ah.
The SQW/FT output is programmable as an N-
channel, open drain output driver, or a full-CMOS
output driver. By setting the Square Wave Open
Drain Bit (SQWOD) to a '1,' the output will be con-
figured as an open drain (with IOL as specified in
Table 5, page 9). When SQWOD is set to '0,' the
output will be configured as full-CMOS (sink and
source current as specified in Table 5, page 9).
Note: When configured as open drain (SQWOD =
'1'), the SQW/FT pin requires an external pull-up
resistor.
Table 13. Square Wave Output Frequency
Full-time 32kHz Square Wave Output
The M41ST87Y/W offers the user a special 32kHz
square wave function which defaults to output on
the F32k pin (Pin 21) as long as VCC is valid, and
the oscillator is running (ST Bit = '0'). This function
is available within four seconds of initial power-up
and can only be disabled by setting the 32kE Bit to
'0' or the ST Bit to '1.' If not used, the F32k pin
should be disconnected and allowed to float.
Note: The F32k pin is an open drain which requires
an external pull-up resistor.
Square Wave Bits
Square Wave
RS3
RS2
RS1
RS0
Frequency
Units
0000
None
–
0001
32.768
kHz
0010
8.192
kHz
0011
4.096
kHz
0100
2.048
kHz
0101
1.024
kHz
0110
512
Hz
0111
256
Hz
1000
128
Hz
1001
64
Hz
1010
32
Hz
1011
16
Hz
11008
Hz
11014
Hz
11102
Hz
11111
Hz
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M41T00SC64MY6E | REAL TIME CLOCK, PDSO18 |
| M41T00SM6F | 0 TIMER(S), REAL TIME CLOCK, PDSO8 |
| M41T00SMY6T | REAL TIME CLOCK, PDSO8 |
| M41T00 | 1 TIMER(S), REAL TIME CLOCK, PDSO8 |
| M41T0DS6E | REAL TIME CLOCK, PDSO8 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M41ST87WMX6TR | 功能描述:實時時鐘 Serial 1280 (160x8) RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| M41ST87WSS6 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0 V and 3.3/3.0 V secure serial RTC and NVRAM supervisor with tamper detection and 128 bytes of clearable NVRAM |
| M41ST87WSS6F | 功能描述:實時時鐘 128 NVRAM Serial RTC 3.0 to 3.6 Vcc RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| M41ST87Y | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0, 3.3, or 3.0V, 1280 bit (160 x8) Secure Serial RTC and NVRAM Supervisor with Tamper Detection |
| M41ST87Y_08 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0 V and 3.3/3.0 V secure serial RTC and NVRAM supervisor with tamper detection and 128 bytes of clearable NVRAM |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。