M50FW040K1 STMicroelectronics, M50FW040K1 Datasheet - Page 15

• Manufacturer Part Number: M50FW040K1
• Description: Flash 3.6V 4M (512Kx8)
• Manufacturer: STMicroelectronics

Specifications of M50FW040K1

• Data Bus Width: 8 bit
• Memory Type: NOR
• Memory Size: 4 Mbit
• Architecture: Sectored
• Interface Type: Firmware Hub
• Access Time: 11 ns, 50 ns
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 3 V
• Maximum Operating Current: 20 mA
• Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Package / Case: PLCC-32
• Organization: 512 KB x 8
• Lead Free Status / Rohs Status: No

Program/Erase Suspend Command. The
gram/Erase Suspend command can be used to
pause a Program or Erase operation. One Bus
Write cycle is required to issue the Program/Erase
Suspend command and pause the Program/Erase
Controller. Once the command is issued it is nec-
essary to poll the Program/Erase Controller Status
bit to find out when the Program/Erase Controller
has paused; no other commands will be accepted
until the Program/Erase Controller has paused.
After the Program/Erase Controller has paused,
the memory will continue to output the Status Reg-
ister until another command is issued.
During the polling period between issuing the Pro-
gram/Erase Suspend command and the Program/
Erase Controller pausing it is possible for the op-
eration to complete. Once Program/Erase Control-
ler Status bit indicates that the Program/Erase
Controller is no longer active, the Program Sus-
pend Status bit or the Erase Suspend Status bit
can be used to determine if the operation has com-
pleted or is suspended. For timing on the delay be-
tween issuing the Program/Erase Suspend
command and the Program/Erase Controller
pausing see
During Program/Erase Suspend the Read Memo-
ry Array, Read Status Register, Read Electronic
Table 12.
Pro-
Signature and Program/Erase Resume com-
mands will be accepted by the Command Inter-
face. Additionally, if the suspended operation was
Erase then the Program command will also be ac-
cepted; only the blocks not being erased may be
read or programmed correctly.
See
Flowchart
22., Erase Suspend & Resume Flowchart and
Pseudo
the Program/Erase Suspend command.
Program/Erase Resume Command. The
gram/Erase Resume command can be used to re-
start the Program/Erase Controller after a
Program/Erase Suspend operation has paused it.
One Bus Write cycle is required to issue the Pro-
gram/Erase Resume command. Once the com-
mand is issued subsequent Bus Read operations
read the Status Register.
Table 6. Read Electronic Signature
Manufacturer Code
Device Code
Figure 20., Program Suspend & Resume
Code, for suggested flowcharts on using
Code
and
Pseudo
Code,
Address
00000h
00001h
M50FW040
and
Data
2Ch
20h
Figure
15/41
Pro-