ID246 Datasheet, PDF (22/38 Pages) Sharp Electrionic Components – Flash Memory Card

SHARP
ID246 SERIES PRODUCT OVERVIEW
21
10. 2 STS Configuration Command
The RDY/BSY# pin can be configured to different states using the STS Configuration command. Once the RDYI
BSY# pin has been configured, it remains in that configuration until another configuration command is issued, the
device is powered down or card is reset. Upon initial power-up and after exit from deep power-down mode. the
RDY/BSY# pin defaults to RY/BY# operation where STS low indicates that the WSM is busy. STS high indicates
that the WSM is ready for a new operation.
To reconfigure the RDY/BSY# 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.
Table 16. STS Configuration Coding Description
Effects
Set STS pin to default level mode (RY/BY#). RY/BY# in the default level-mode of
operation will indicate WSM status condifion.
Set STS pin to plused output signal for specific erase operation. In this mode, STS
provides low pulse at the completion of Block Erase,Full Chip Erase and Clear Block
Lock-bit ooeration.
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, Full Chip Erase, (Multi) Word/Byte Configuration
operations.
T1158E-01
Table 17. Write Protection Alternatives
Operation
Block Erase,
(Multi) Word/Byte
Write
Full Chip Erase
Set Block Lock-Bit
Clear Block Lock-Bits
Block
Lock-Bit
I
0
1
CL1
X
X
X
BLKEN bit of Write
Protection Resister
L
h
I
I
Effect
I
1Block Erase and (Multi) Word/Byte Write
Enabled.
1Block 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, lockd blocks are
not erased.
All Block Lock-Bit Disabled.
Set Block Lock-Bit Disabled.
Set Block Lock-Bit Enabled.
Clear Block Lock-Bit Disabled.
Clear Block Lock-Bit Enabled.
T1159E01