The AT49SN/SV12804 is a 1.8-volt 128-megabit Flash memory. The memory is divided into multiple sectors and planes for erase operations. The AT49SN/SV12804 is organized as 8,388,608 x 16 bits. The device can be read or reprogrammed off a single 1.8V power supply, making it ideally suited for In-System programming. The device can be configured to operate in the asynchronous/page read (default mode) or burst read mode (not available for the AT49SV12804). The burst read mode is used to achieve a faster data rate than is possible in the asynchronous/page read mode. If the AVD and the CLK signals are both tied to GND and the burst configuration register is configured to perform asynchronous reads, the device will behave like a standard asynchronous Flash memory. In the page mode, the AVD signal can be tied to GND or can be pulsed low to latch the page address. In both cases the CLK can be tied to GND.