lh28f004su-nc Sharp Microelectronics of the Americas, lh28f004su-nc Datasheet - Page 3

• Manufacturer Part Number: lh28f004su-nc
• Description: 512k Flash Memory
• Manufacturer: Sharp Microelectronics of the Americas

4M (512K × 8) Flash Memory
PIN DESCRIPTION
DQ
SYMBOL
A
A
RY
14
0
GND
0
V
V
WE
CE
RP
OE
NC
- A
- A
- DQ
PP
CC
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/ BY
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13
18
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7
INPUT
INPUT
INPUT/OUTPUT
INPUT
INPUT
INPUT
INPUT
OPEN DRAIN
OUTPUT
SUPPLY
SUPPLY
SUPPLY
TYPE
WORD-SELECT ADDRESSES: Select a word within one 16K block. These addresses
are latched during Data Writes.
BLOCK-SELECT ADDRESSES: Select 1 of 32 Erase blocks. These addresses are
latched during Data Writes, Erase and Lock-Block operations.
DATA INPUT/OUTPUT: Inputs data and commands during CUI write cycles. Outputs
array, buffer, identifier or status data in the appropriate Read mode. Floated when
the chip is de-selected or the outputs are disabled.
CHIP ENABLE INPUTS: Activate the device’s control logic, input buffers, decoders
and sense amplifiers. CE
RESET/POWER-DOWN: With RP
aborted and device is put into the deep power down mode. When the power is
turned on, RP
uration. When the power transition has occurred, or the power on/off, RP
required to stay low in order to protect data from noise. When returning from Deep
Power-Down, a recovery time of 480 ns is required to allow these circuits to power-
up. When RP
and the device is reset. All Status Registers return to ready (with all status flags
cleared). After returning, the device is in read array mode.
OUTPUT ENABLE: Gates device data through the output buffers when low. The
outputs float to tri-state off when OE
WRITE ENABLE: Controls access to the CUI, Data Queue Registers and Address
Queue Latches. WE is active low, and latches both address and data (command
or array) on its rising edge.
READY/BUSY: Indicates status of the internal WSM. When low, it indicates that the
WSM is busy performing an operation. When the WSM is ready for new operation or
Erase is Suspended, or the device is in deep power-down mode RY
ERASE/WRITE POWER SUPPLY (5.0 V ±0.5 V): For erasing memory array blocks or
writing words/bytes into the flash array.
DEVICE POWER SUPPLY (5.0 V ±0.5 V): Do not leave any power pins floating.
GROUND FOR ALL INTERNAL CIRCUITRY: Do not leave any ground pins floating.
NO CONNECT: No internal connection to die, lead may be driven or left floating.
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goes low, any current or pending WSM operation(s) are terminated,
pin is turned to low in order to return the device to default config-
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must be low to select the device.
NAME AND FUNCTION
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low, the device is reset, any current operation is
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is high.
LH28F004SU-NC
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/ BY
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pin is floated.
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is
3