Numonyx™ StrataFlash® Cellular Memory (M18)
Note:
Issuing the Read Array command to a partition that is actively programming or erasing
causes subsequent reads from that partition to output invalid data. Valid array data is
output only after the program or erase operation has finished.
The Read Array command functions independent of the voltage level on VPP.
9.4.2
Read Status Register
Issuing the Read Status Register command places the addressed partition in Read
Status Register mode. Subsequent reads from that partition output Status Register
information. The addressed partition remains in Read Status Register mode until a
different read-mode command is issued to that partition. Performing a program, erase,
or block-lock operation also changes the partition’s read mode to Read Status Register
mode.
The Status Register is updated on the falling edge of CE#, or OE# when CE# is low.
Status Register contents are valid only when SR7 = 1.
The Read Status Register command functions independent of the voltage level on VPP.
9.4.3
Read Device Information
Issuing the Read Device Information command places the addressed partition in Read
Device Information mode. Subsequent reads output device information on the data
bus. The address offsets for reading the available device information are shown here.
Table 37: Device Information Summary
Device Information
Address Bus
Data Bus
Device Manufacturer Code (Numonyx)
Device ID Code
Partition Base Address + 00h
Partition Base Address + 01h
0089h
Device IDs
D0 = Lock Status
D1 = Lock-Down Status
Main Block Lock Status
Block Base Address + 02h
Read Configuration Register
Partition Base Address + 05h
Partition Base Address + 06h
Configuration Register Data
Enhanced Configuration
Register Data
Enhanced Configuration Register
OTP Lock Register 0
Partition Base Address + 80h
Lock Register 0 Data
Factory-Programmed Data
User Data
OTP Register - Factory Segment
OTP Register - User-Programmable Segment
OTP Lock Register 1
Partition Base Address + 81h to 84h
Partition Base Address + 85h to 88h
Partition Base Address + 89h
Lock Register 1 Data
User Data
OTP Registers 1 through 16
Partition Base Address + 8Ah to 109h
The addressed partition remains in Read Device Information mode until a different read
command is issued. Also, performing a program, erase, or block-lock operation changes
the addressed partition to Read Status Register mode.
Note:
Issuing the Read Device Information command to a partition that is actively
programming or erasing changes that partition’s read mode to Read Device Information
mode. Subsequent reads from that partition will return invalid data until the program or
erase operation has completed.
The Read Device Information command functions independent of the voltage level on
VPP.
Datasheet
82
April 2008
309823-10
NUMONYX [ NUMONYX B.V ]
