参数资料
型号: M41T80M6F
厂商: STMICROELECTRONICS
元件分类: 时钟/数据恢复及定时提取
英文描述: 1 TIMER(S), REAL TIME CLOCK, PDSO8
封装: 0.150 INCH, LEAD FREE, PLASTIC, SO1C-8
文件页数: 9/25页
文件大小: 343K
代理商: M41T80M6F
M41T80
Clock operation
Doc ID 9074 Rev 4
3.5
Output driver pin
When the AFE bit and SQWE bit are not set, the IRQ/OUT/SQW pin becomes an output
driver that reflects the contents of D7 of the control register. In other words, when D7 (OUT
bit) of address location 08h is a '0,' then the IRQ/OUT/SQW pin will be driven low.
Note:
The IRQ/OUT/SQW pin is an open drain which requires an external pull-up resistor.
3.6
Preferred power-on default
When powering the device up from ground (0 V), the following register bits are set to a '0'
state: ST; AFE; and SQWE. The following bits are set to a '1' state: OUT and 32KE (see
Table 6.
Preferred power-on default values
Condition
ST
OUT
AFE
SQWE
32KE
Power-up(1)
1.
If VCC falls to a voltage, 0 V < VCC < 2.0 V, these bits should be rewritten by the user.
01
0
1
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