资料介绍
The Microchip Technology Inc. 28LV64A is a CMOS 64K non-volatile
electrically Erasable PROM organized as 8K words by 8 bits.
The 28LV64A is accessed like a static RAM for the read or write
cycles without the need of external components. During a “byte
write”, the address and data are latched internally, freeing the
microprocessor address and data bus for other operations. Following
the initiation of write cycle, the device will go to a busy state
and automatically clear and write the latched data using an internal
control timer. To determine when the write cycle is complete,
the user has a choice of monitoring the Ready/Busy output or
using Data polling. The Ready/Busy pin is an open drain output,
which allows easy configuration in ‘wired-or’ systems. Alternatively,
Data polling allows the user to read the location last written
to when the write operation is complete. CMOS design and processing
enables this part to be used in systems where reduced
power consumption and reliability are required. A complete family
of packages is offered to provide the utmost flexibility in applications.
electrically Erasable PROM organized as 8K words by 8 bits.
The 28LV64A is accessed like a static RAM for the read or write
cycles without the need of external components. During a “byte
write”, the address and data are latched internally, freeing the
microprocessor address and data bus for other operations. Following
the initiation of write cycle, the device will go to a busy state
and automatically clear and write the latched data using an internal
control timer. To determine when the write cycle is complete,
the user has a choice of monitoring the Ready/Busy output or
using Data polling. The Ready/Busy pin is an open drain output,
which allows easy configuration in ‘wired-or’ systems. Alternatively,
Data polling allows the user to read the location last written
to when the write operation is complete. CMOS design and processing
enables this part to be used in systems where reduced
power consumption and reliability are required. A complete family
of packages is offered to provide the utmost flexibility in applications.
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