| A18-AO DQis-DQo CE# OE# WE# VDD VDDQ Vss NC | Address Inputs Data Input/output Chip Enable Output Enable Write Enable Power Supply I/O Power Supply Ground No Connection | To provide memory addresses. During sector erase A18-A11 address lines will select the sector. During block erase A18-A15 address lines will select the block. To output data during read cycles and receive input data during write cycles. Data is internally latched during a write cycle. The outputs are in tri-state when OE# or CE# is high. To activate the device when CE# is low. To gate the data output buffers. To control the write operations. To provide 3-volt supply (2.7-3.6V) Supplies power for input/output buffers. It should be either tied to VDD (2.7 - 3.6V) for 3V l/0 0r to a 5.OV (4.5 - 5.5V) power supply to support 5V l/0. (Not offered on SST39VF800 device, instead it is a NC) Unconnected pins. |
