lh28f016sc-l Sharp Microelectronics of the Americas, lh28f016sc-l Datasheet - Page 9

• Manufacturer Part Number: lh28f016sc-l
• Description: M-bit Smartvoltage Flash Memories
• Manufacturer: Sharp Microelectronics of the Americas

partially erased or written. Time t
after RP# goes to logic-high (V
command can be written.
As with any automated device, it is important to
assert RP# during system reset. When the system
comes out of reset, it expects to read from the flash
memory. Automated flash memories provide status
information when accessed during block erase, byte
write, or lock-bit configuration modes. If a CPU
reset occurs with no flash memory reset, proper
CPU initialization may not occur because the flash
memory may be providing status information
instead of array data. SHARP’s flash memories
allow proper CPU initialization following a system
reset through the use of the RP# input. In this
application, RP# is controlled by the same RESET#
signal that resets the system CPU.
IH
PHWL
) before another
is required
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3.5 Read Identifier Codes Operation
The read identifier codes operation outputs the
manufacture code, device code, block lock
configuration codes for each block, and the master
lock configuration code (see Fig. 2). Using the
manufacture and device codes, the system CPU
can automatically match the device with its proper
algorithms. The block lock and master lock
configuration codes identify locked and unlocked
blocks and master lock-bit setting.
Fig. 2 Device Identifier Code Memory Map
1FFFFF
1F0004
1F0003
1F0002
1F0001
1F0000
01FFFF
010004
010003
010002
010001
010000
00FFFF
000004
000003
000002
000001
000000
Block 31 Lock Configuration Code
Block 1 Lock Configuration Code
Block 0 Lock Configuration Code
Master Lock Configuration Code
Future Implementation
Future Implementation
Future Implementation
Future Implementation
Future Implementation
(Blocks 2 through 30)
Manufacture Code
Reserved for
Reserved for
Reserved for
Reserved for
Reserved for
Device Code
LH28F016SC-L/SCH-L
Block 31
Block 1
Block 0