pa28f004sc-120 Intel Corporation, pa28f004sc-120 Datasheet - Page 4

• Manufacturer Part Number: pa28f004sc-120
• Description: 8-mbit 1-mbit X 8 Flashfiletm Memory
• Manufacturer: Intel Corporation

28F008SA
4
A
DQ
CE
RP
OE
WE
RY BY
V
V
GND
Symbol
0
PP
CC
– A
0
– DQ
19
7
INPUT OUTPUT
OUTPUT
INPUT
INPUT
INPUT
INPUT
INPUT
Type
ADDRESS INPUTS for memory addresses Addresses are internally
latched during a write cycle
DATA INPUT OUTPUTS Inputs data and commands during Command
User Interface write cycles outputs data during memory array Status
Register and Identifier read cycles The data pins are active high and
float to tri-state off when the chip is deselected or the outputs are
disabled Data is internally latched during a write cycle
CHIP ENABLE Activates the device’s control logic input buffers
decoders and sense amplifiers CE
the memory device and reduces power consumption to standby levels
RESET DEEP POWERDOWN Puts the device in deep powerdown
mode RP
locks out block erase or byte write operations when active low providing
data protection during power transitions RP
automation Exit from Deep Powerdown sets device to read-array mode
OUTPUT ENABLE Gates the device’s outputs through the data buffers
during a read cycle OE
WRITE ENABLE Controls writes to the Command User Interface and
array blocks WE
rising edge of the WE
READY BUSY
Machine When low it indicates that the WSM is performing a block
erase or byte write operation RY BY
ready for new commands block erase is suspended or the device is in
deep powerdown mode RY BY
to tri-state off when the chip is deselected or data outputs are disabled
BLOCK ERASE BYTE WRITE POWER SUPPLY for erasing blocks of
the array or writing bytes of each block
With V
DEVICE POWER SUPPLY (5V
GROUND
Table 1 Pin Description
PP k
V
is active low RP
PPLMAX
Indicates the status of the internal Write State
is active low Addresses and data are latched on the
memory contents cannot be altered
pulse
Name and Function
is active low
high gates normal operation RP
g
NOTE
10% 5V
is always active and does NOT float
is active low CE
high indicates that the WSM is
g
5%)
active resets internal
high deselects
also