LHF16KA7 データシートの表示（PDF） - Sharp Electronics

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LHF16KA7

Flash Memory 16M (2MB × 8/1MB × 16)

Sharp Electronics 

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LHFlGKA7

19

I.14 STS Configuration Command

‘he Status (STS) pin can be configured to different

;tates using the STS Configuration command. Once

he STS pin has been configured, it remains in that

:onfiguration until another configuration command is

;sued, the device is powered down or RP# is set to

/,L. Upon initial device power-up and after exit from

leep power-down mode, the STS pin defaults to

IY/BY# operation where STS low indicates that the

YSM is busy. STS High Z indicates that the WSM is

eady for a new operation.

-0 reconfigure the STS pin to other modes, the STS

Configuration is issued followed by the appropriate

:onfiguration code. The three alternate configurations

Ire all pulse mode for use as a system interrupt. The

;TS Configuration command functions independently

If the Vpp voltage and RP# must be VI,.

Table 12. STS Configuration Coding Description

Configuration

Bits

Effects

Set STS pin to default level mode

OOH

(RY/BY#). RY/BY# in the default

level-mode of operation will indicate

WSM status condition.

Set STS pin to pulsed output signal

for specific erase operation. In this

OlH

mode, STS provides low pulse at

the completion of BLock Erase,

Full Chip Erase and Clear Block

Lock-bits operations.

Set STS pin to pulsed output signal

for a specific write operation. In this

02H

mode, STS provides low pulse at

the completion of (Multi) Byte Write

and Set Block Lock-bit operation.

Set STS pin to pulsed output signal

for specific write and erase

operation. STS provides low pulse

03H

at the completion of Block Erase,

Full Chip Erase, (Multi) Word/Byte

Write and Block Lock-bit

Configuration operations.

Operation

Block Erase, .

(Multi) Word/Byte

Write

,,,

Block

Lock-Bit

0

., ,

Full Chip Erase

091

X

Set Block Lock-Bit

X

Clear Block Lock-Bits

X

Table 13. Write Protection Alternatives

WP#

Effect

v,, or V,,,

VI,

VI,

V,,

V,H

V,,

V,H

V,,

V,w

Block Erase and (Multi) Word/Byte Write Enabled

Block is Locked. Block Erase and (Multi) Word/Byte Write

Disabled

Block Lock-Bit Override. Block Erase and (Multi) Word/Byte

Write Enabled

All unlocked blocks are erased, locked blocks are not erased

All blocks are erased

Set Block Lock-Bit Disabled

Set Block Lock-Bit Enabled

Clear Block Lock-Bits Disabled

Clear Block Lock-Bits Enabled

Rev. 1.9

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