Samsung SC-148B Service Manual page 14

29EE512-70(I.C-FLASH MEMORY)
- PIN DESCRIPTION
Symbol Pin Name
A15-A7 Row Address Inputs
A6-A0 Column Address Inputs Column Addresses are toggled to load page data.
DQ7-DQ0 Data Input/output
OE# Chip Enable
OE# Output Enable
WE# Write Enable
Vcc Power Supply
Vss Ground
NC No Connection
BH3541F(I.C-H/P AMP)
Functions
To provide memory addresses. Row addresses define a page for a
write cycle.
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 5-volt supply(±10%)
Unconnected pins.
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