参数资料
型号: M48T86MH1E
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, PDSO28
封装: 0.330 INCH, ROHS COMPLIANT, PLASTIC, SOH-28
文件页数: 14/36页
文件大小: 352K
代理商: M48T86MH1E
Obsolete
Product(s)
- Obsolete
Product(s)
M48T86
Clock operations
3.11.7
24/12
The 24/12 Control bit establishes the format of the hours byte. A '1' indicates the 24-hour
mode and a '0' indicates the 12-hour mode. This bit is READ/WRITE and is not affected by
internal functions or RST.
3.11.8
DSE: daylight savings enable
The Daylight Savings Enable (DSE) bit is a READ/WRITE bit which enables two special
updates when set to a '1.' On the first Sunday in April, the time increments from 1:59:59AM
to 3:00:00 AM. On the last Sunday in October, when the time reaches 1:59:59 AM, it
changes to 1:00:00 AM. These special updates do not occur when the DSE bit is a '0.' This
bit is not affected by internal functions or RST.
Table 6.
Register B MSB
Figure 10.
Update-ended/periodic interrupt relationship
3.12
Register C
3.12.1
IRQF: interrupt request flag
The Interrupt Request Flag (IRQF) bit is set to a '1' when one or more of the following are
true:
PF = PIE = 1
AF = AIE = 1
UF = UIE = 1
(e.g., IRQF = PF*PIE+AF*AIE+UF*UIE)
BIT7
BIT6
BIT5
BIT4
BIT3
BIT2
BIT1
BIT0
SET
PIE
AIE
UIE
SQWE
DM
24/12
DSE
AI01652B
UIP
UPDATE PERIOD (1sec)
PF
UF
tPI
tBUC
tUC
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