LHF32KZR
22
4.14 STS Configuration Command
Table 12. STS Configuration Coding Description
The Status (STS) pin can be configured to different
states using the STS Configuration command. Once
the STS pin has been configured, it remains in that
configuration until another configuration command is
issued, the device is powered down or RP# is set to
V IL . Upon initial device power-up and after exit from
deep power-down mode, the STS pin defaults to
RY/BY# operation where STS low indicates that the
WSM is busy. STS High Z indicates that the WSM is
ready for a new operation.
To reconfigure the STS pin to other modes, the STS
Configuration is issued followed by the appropriate
configuration code. The three alternate configurations
are all pulse mode for use as a system interrupt. The
STS Configuration command functions independently
of the V PP voltage and RP# must be V IH .
Configuration
Bits
00H
01H
02H
03H
Effects
Set STS pin to default level mode
(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
mode, STS provides low pulse at
the completion of BLock Erase,
Bank Erase and Clear Block Lock-
bits operations.
Set STS pin to pulsed output signal
for a specific write operation. In this
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
at the completion of Block Erase,
Bank Erase, (Multi) Word/Byte
Write and Block Lock-bit
Configuration operations.
Table 13. Write Protection Alternatives
Operation
Block Erase,
(Multi) Word/Byte
Write
Bank Erase
Set Block Lock-Bit
Clear Block Lock-Bits
Block
Lock-Bit
0
1
0,1
X
X
X
WP#
V IL or V IH
V IL
V IH
V IL
V IH
V IL
V IH
V IL
V IH
Effect
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
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