ViewSonic VG710s Manuel de service télécharger pdf (Page 14)

1. Power supply (DC/DC Converter)

The AP1501 is monolithic IC designed for M/B DC/DC converter, with the ability of driving a 3A load without any

additional transistor component.

The AP1501 operates at a switching frequency of 150 kHz and thus allows smaller-sized filter components than

would be needed with lower frequency switch regulator.

2. Flash Memory

The Pm39LV010R is a 1 Megabit, 3.3 Volt-only Flash Memory organized as 131,072 bytes of 8 bits each. This device is

designed to use a 3.0 Volt to 3.6 Volt power supply to perform in-system programming.

The 1 Megabit memory array is divided into thirty-two uniform blocks of 4 Kbytes each for data and/or code storage.

The block architecture allows users to flexibly make chip erase or block erase operation. The block erase feature allows a

particular block to be erased and reprogrammed without affecting the data in other blocks. After the device performs chip

4. Circuit Description

erase or block erase operation, it can be reprogrammed on a byte-by-byte basis.

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ViewSonic VG710s Manuel de service Page 14