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参数资料
| 型号： | M48T513Y-85CS1 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 时钟/数据恢复及定时提取 |
| 英文描述： | 0 TIMER(S), REAL TIME CLOCK, PDSO32 |
| 封装： | SNAPHAT, PLASTIC, SO-44 |
| 文件页数： | 11/31页 |
| 文件大小： | 168K |
| 代理商： | M48T513Y-85CS1 |
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M48T513Y, M48T513V
When the clock information matches the alarm
clock settings based on the match criteria defined
by RPT5-RPT1, the AF (Alarm Flag) is set. If AFE
(Alarm Flag Enable) is also set, the alarm condi-
tion activates the IRQ/FT pin. To disable alarm,
write ’0’ to the Alarm Date register and RPT1-5.
The IRQ/FT output is cleared by a READ to the
Flags Register as shown in Figure 13. A subse-
quent READ of the Flags Register is necessary to
see that the value of the Alarm Flag has been re-
set to ’0.’
The IRQ/FT pin can also be activated in the bat-
tery back-up mode. The IRQ/FT will go low if an
alarm occurs and both ABE (Alarm in Battery
Back-up Mode Enable) and 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 M48T513Y/V was in the deselect mode
during power-up. Figure Figure 14, page 20 illus-
trates the back-up mode alarm timing.
Figure 13. Alarm Interrupt Reset Waveform
Table 12. Alarm Repeat Mode
RPT5
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
1
0
Once per Month
0
Once per Year
AI02581
AD0-AD7
ACTIVE FLAG BIT
ADDRESS 1FF0h
IRQ/FT
HIGH-Z
15ns Min
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相关代理商/技术参数 |
参数描述 |
|---|---|
| M48T513Y-85PM1 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:3.3V-5V 4 Mbit 512Kb x8 TIMEKEEPER SRAM |
| M48T513YPM | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:3.3V-5V 4 Mbit 512Kb x8 TIMEKEEPER SRAM |
| M48T513YSH | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:3.3V-5V 4 Mbit 512Kb x8 TIMEKEEPER SRAM |
| M48T559 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:64 Kbit 8Kb x8 TIMEKEEPER SRAM with ADDRESS/DATA MULTIPLEXED |
| M48T559Y | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:64 Kbit 8Kb x8 TIMEKEEPER SRAM with ADDRESS/DATA MULTIPLEXED |
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