LH28F320BFHE-PBTLZ2 View Datasheet(PDF) - Sharp Electronics

Part Name

Description

Manufacturer

LH28F320BFHE-PBTLZ2

32M (x16) Flash Memory

Sharp Electronics 

LHF32FD2

4

Symbol

A0-A20

DQ0-DQ15

CE#

RST#

OE#

WE#

WP#

VPP

VCC

VCCQ

GND

NC

Type

INPUT

INPUT/

OUTPUT

INPUT

INPUT

INPUT

INPUT

INPUT

INPUT

SUPPLY

SUPPLY

SUPPLY

Table 1. Pin Descriptions

Name and Function

ADDRESS INPUTS: Inputs for addresses. 32M: A0-A20

DATA INPUTS/OUTPUTS: Inputs data and commands during CUI (Command User

Interface) write cycles, outputs data during memory array, status register, query code,

identifier code and partition configuration register code reads. Data pins float to high-

impedance (High Z) when the chip or outputs are deselected. Data is internally latched

during an erase or program cycle.

CHIP ENABLE: Activates the device’s control logic, input buffers, decoders and sense

amplifiers. CE#-high (VIH) deselects the device and reduces power consumption to

standby levels.

RESET: When low (VIL), RST# resets internal automation and inhibits write operations

which provides data protection. RST#-high (VIH) enables normal operation. After

power-up or reset mode, the device is automatically set to read array mode. RST# must

be low during power-up/down.

OUTPUT ENABLE: Gates the device’s outputs during a read cycle.

WRITE ENABLE: Controls writes to the CUI and array blocks. Addresses and data are

latched on the rising edge of CE# or WE# (whichever goes high first).

WRITE PROTECT: When WP# is VIL, locked-down blocks cannot be unlocked. Erase

or program operation can be executed to the blocks which are not locked and not locked-

down. When WP# is VIH, lock-down is disabled.

MONITORING POWER SUPPLY VOLTAGE: VPP is not used for power supply pin.

With VPP≤VPPLK, block erase, full chip erase, (page buffer) program or OTP program

cannot be executed and should not be attempted.

Applying 12V±0.3V to VPP provides fast erasing or fast programming mode. In this

mode, VPP is power supply pin. Applying 12V±0.3V to VPP during erase/program can

only be done for a maximum of 1,000 cycles on each block. VPP may be connected to

12V±0.3V for a total of 80 hours maximum. Use of this pin at 12V beyond these limits

may reduce block cycling capability or cause permanent damage.

DEVICE POWER SUPPLY (2.7V-3.6V): With VCC≤VLKO, all write attempts to the

flash memory are inhibited. Device operations at invalid VCC voltage (see DC

Characteristics) produce spurious results and should not be attempted.

INPUT/OUTPUT POWER SUPPLY (2.7V-3.6V): Power supply for all input/output

pins.

GROUND: Do not float any ground pins.

NO CONNECT: Lead is not internally connected; it may be driven or floated.

Rev. 2.44

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