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BYTE-WIDE SMART 5 FlashFile™ MEMORY FAMILY
Table 1. Pin Descriptions
Name and Function
Sym
Type
A0–A20
INPUT ADDRESS INPUTS: Inputs for addresses during read and write operations.
Addresses are internally latched during a write cycle.
4 Mbit → A0–A18
8 Mbit → A0–A19
16 Mbit → A0–A20
DQ0–DQ7 INPUT/ DATA INPUT/OUTPUTS: Inputs data and commands during CUI write cycles;
OUTPUT outputs data during memory array, status register, and identifier code read cycles.
Data pins float to high-impedance when the chip is deselected or outputs are
disabled. Data is internally latched during a write cycle.
CE#
INPUT CHIP ENABLE: Activates the device’s control logic, input buffers, decoders, and
sense amplifiers. CE#-high deselects the device and reduces power consumption to
standby levels.
RP#
INPUT RESET/DEEP POWER-DOWN: When driven low, RP# inhibits write operations
which provides data protection during power transitions, puts the device in deep
power-down mode, and resets internal automation. RP#-high enables normal
operation. Exit from deep power-down sets the device to read array mode.
RP# at VHH enables setting of the master lock-bit and enables configuration of block
lock-bits when the master lock-bit is set. RP# = VHH overrides block lock-bits,
thereby enabling block erase and program operations to locked memory blocks.
Block erase, program, or lock-bit configuration with VIH < RP# < VHH produce
spurious results and should not be attempted.
OE#
WE#
INPUT OUTPUT ENABLE: Gates the device’s outputs during a read cycle.
INPUT WRITE ENABLE: Controls writes to the CUI and array blocks. Addresses and data
are latched on the rising edge of the WE# pulse.
RY/BY#
OUTPUT READY/BUSY#: Indicates the status of the internal WSM. When low, the WSM is
performing an internal operation (block erase, program, or lock-bit configuration).
RY/BY#-high indicates that the WSM is ready for new commands, block erase or
program is suspended, or the device is in deep power-down mode. RY/BY# is
always active.
VPP
SUPPLY BLOCK ERASE, PROGRAM, LOCK-BIT CONFIGURATION POWER SUPPLY:
For erasing array blocks, programming data, or configuring lock-bits.
Smart 5 Flash → 5V and 12V VPP
With VPP ≤ VPPLK, memory contents cannot be altered. Block erase, program, and
lock-bit configuration with an invalid VPP (see DC Characteristics) produce spurious
results and should not be attempted.
VCC
SUPPLY DEVICE POWER SUPPLY: Internal detection automatically configures the device
for optimized read performance. Do not float any power pins.
Smart 5 Flash → 5V VCC
With VCC ≤ VLKO, all write attempts to the flash memory are inhibited. Device
operations at invalid VCC voltages (see DC Characteristics) produce spurious
results and should not be attempted.
GND
NC
SUPPLY GROUND: Do not float any ground pins.
NO CONNECT: Lead is not internally connected; it may be driven or floated.
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