The LV8572A is intended for use in microprocessor based systems where information is required for multi-tasking data logging or general time of day date information This device is implemented in low voltage silicon gate microCMOS technology to provide low standby power in battery back-up environments The circuit’s architecture is such that it looks like a co.
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3 3V g 10% supply Full function real time clock calendar 12 24 hour mode timekeeping Day of week and day of years counters Four selectable oscillator frequencies Parallel resonant oscillator Power fail features Internal power supply switch to external battery Power Supply Bus glitch protection Automatic log of time into RAM at power failure On-chip interrupt structure Periodic alarm and power fail interrupts Up to 44 bytes of CMOS RAM
Block Diagram
TL F 11417
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FIGURE 1
TRI-STATE is a registered trademark of National Semiconductor Corporation C1995 National Semiconductor Co.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | LV8572AM |
National Semiconductor |
LV8572A Low Voltage Real Time Clock (RTC) | |
2 | LV8572AN |
National Semiconductor |
LV8572A Low Voltage Real Time Clock (RTC) | |
3 | LV8573A |
National Semiconductor |
LV8573A Low Voltage Real Time Clock (RTC) | |
4 | LV8573AM |
National Semiconductor |
LV8573A Low Voltage Real Time Clock (RTC) | |
5 | LV8573AN |
National Semiconductor |
LV8573A Low Voltage Real Time Clock (RTC) | |
6 | LV8573AV |
National Semiconductor |
LV8573A Low Voltage Real Time Clock (RTC) | |
7 | LV8573M |
National Semiconductor |
LV8573A Low Voltage Real Time Clock (RTC) | |
8 | LV8548M |
Sanyo Semicon Device |
Forward/Reverse Motor Driver | |
9 | LV8548MC |
ON Semiconductor |
2-channel low saturation voltage forward/reverse motor driver | |
10 | LV8549M |
Sanyo Semicon Device |
Stepping Motor Driver | |
11 | LV8549MC |
ON Semiconductor |
Stepping Motor Driver | |
12 | LV8011V |
Sanyo Semicon Device |
Forward/Reverse Motor Driver |