qh25f320s33b8 Numonyx, qh25f320s33b8 Datasheet - Page 29

• Manufacturer Part Number: qh25f320s33b8
• Description: Numonyx? Serial Flash Memory S33
• Manufacturer: Numonyx

Numonyx™ Serial Flash Memory (S33)
8.2.10
8.2.11
8.2.12
8.2.13
8.2.14
8.2.15
December 2007
Order Number: 314822-03
OTP Program Command (42h)
The OTP Program command programs data in the OTP region, which is in a different
address space from the main array data. Refer to
page 36
same as the Page Program command, except that the OTP Program command requires
exactly one byte of data; otherwise, the command will be ignored. To program the OTP
in bit granularity, the rest of the bits within the data byte can be set to "1".
If the WEL bit is set and the address is not a valid OTP address, the program operation
will not occur. Instead, the F_FAIL flag of the Status Register will set and the WEL bit
will clear.
The OTP memory space can be programmed one or more times, provided that the OTP
memory space is not locked (as described in
on page
unprogrammed bits (that is, “1” data).
Read OTP Data Bytes Command (4Bh)
The Read OTP Data Bytes command reads data from the OTP region. Refer to
9.1, “OTP Memory Space” on page 36
Read OTP Data Bytes command is the same as the Fast Read Data Bytes command
except that it will not wrap to the starting address after the OTP address is at its
maximum; instead, the data will be indeterminate.
Read ID Command (9Fh)
The Read ID command reads three bytes of data. It does not require any address
bytes, data bytes or dummy bytes. After inputting the OP code, three bytes are clocked
out of the device: the MFG ID, the first byte of the Device ID, and the second byte of
the Device ID. Refer to
Device IDs of the S33 device. If S# is held low after the third byte of data, the
subsequent data is indeterminate.
Release from DPD Command (ABh)
In Deep Power-Down mode, the only command that the SPI interface recognizes is the
Release from DPD command. After issuing this command, the t
before S# can go low to initiate another command. The only other way to release the
device from DPD mode is to power it off and on.
When issuing a Release from DPD command, it is not necessary to raise S# after
exactly eight clock cycles. After inputting the 8-bit OP Code, all subsequent bits in the
command sequence will be ignored.
Deep Power-Down Command (B9h)
The Deep Power-Down command puts the device in DPD mode, whereby all commands
are ignored except the Release from DPD command (ABh).
Bulk Erase Command (C7h)
The Bulk Erase command serially erases the entire main array. including the parameter
blocks (but excluding the OTP memory space).
for details on the OTP region. The protocol of the OTP Program command is the
36). Subsequent OTP programming can be performed only on the
Table 19, “Device ID Codes” on page 38
for details on the OTP region. The protocol of the
Section 9.1.3, “Lock Protection Registers”
Section 9.1, “OTP Memory Space” on
RDP
for the MFG ID and
latency is required
Section
Datasheet
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