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參數(shù)資料
| 型號： | M48T59Y-70PC1DS |
| 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： | 0 TIMER(S), REAL TIME CLOCK, PDIP28 |
| 封裝： | 0.600 INCH, CAPHAT, PLASTIC, DIP-28 |
| 文件頁數(shù)： | 8/32頁 |
| 文件大?。?/td> | 373K |
| 代理商： | M48T59Y-70PC1DS |
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Clock operations
M48T59, M48T59Y, M48T59V
alarm condition activates the IRQ/FT pin. To disable the alarm, write '0' to the Alarm Date
Register and RPT1-4. The Alarm Flag and the IRQ/FT output are cleared by a READ to the
Flags Register as shown in Figure 10 on page 16. A subsequent READ of the Flags
Register is necessary to see that the value of the Alarm Flag has been reset to '0.'
The IRQ/FT pin can also be activated in the battery back-up mode. The IRQ/FT will go low if
an alarm occurs and both the ABE (Alarm in Battery Back-up Mode Enable) and the AFE
are set. The ABE and AFE bits are reset during power-up, therefore an alarm generated
during power-up will only set AF. The user can read the Flag Register at system boot-up to
determine if an alarm was generated while the M48T59/Y/V was in the deselect mode
during power-down. Figure 11 on page 17 illustrates the back-up mode alarm timing.
Figure 10.
Alarm interrupt reset waveform
Table 6.
Alarm repeat mode
RPT4
RPT3
RPT2
RPT1
Alarm activated
1
Once per second
1
0
Once per minute
1
0
Once per hour
1
0
Once per day
0
Once per month
AI01388B
15ns Min
A0-A12
ACTIVE FLAG BIT
IRQ/FT
ADDRESS 1FF0h
HIGH-Z
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M48T59V-70MH1TR | 0 TIMER(S), REAL TIME CLOCK, PDSO28 |
| M48T59V-70MH1 | 0 TIMER(S), REAL TIME CLOCK, PDSO28 |
| M48T59Y-70MH1E | 0 TIMER(S), REAL TIME CLOCK, PDSO28 |
| M48T59Y-70MH1 | 0 TIMER(S), REAL TIME CLOCK, PDSO28 |
| M48T59V-70MH6 | 0 TIMER(S), REAL TIME CLOCK, PDSO28 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M48T59Y-70PC1E | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0 or 3.3 V, 64 Kbit (8 Kbit x 8) TIMEKEEPER? SRAM |
| M48T59Y-70PC1F | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0 or 3.3 V, 64 Kbit (8 Kbit x 8) TIMEKEEPER? SRAM |
| M48T59Y-70PC1TR | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:64 Kbit 8Kb x8 TIMEKEEPER SRAM |
| M48T59Y-70PC6 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:64 Kbit 8Kb x8 TIMEKEEPER SRAM |
| M48T59Y-70PC6TR | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:64 Kbit 8Kb x8 TIMEKEEPER SRAM |
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