S29JL032J70TFI420 Spansion Inc., S29JL032J70TFI420 Datasheet - Page 34

• Manufacturer Part Number: S29JL032J70TFI420
• Description: IC 3V 32M SIMULTANEOUS READ/WRITE FLASH
• Manufacturer: Spansion Inc.

Specifications of S29JL032J70TFI420

• Cell Type: NOR
• Density: 32Mb
• Access Time (max): 70ns
• Interface Type: Serial
• Boot Type: Bottom
• Address Bus: 22/21Bit
• Operating Supply Voltage (typ): 3/3.3V
• Operating Temp Range: -40C to 85C
• Package Type: TSOP
• Program/erase Volt (typ): 2.7 to 3.6V
• Sync/async: Asynchronous
• Operating Temperature Classification: Industrial
• Operating Supply Voltage (min): 2.7V
• Operating Supply Voltage (max): 3.6V
• Word Size: 8/16Bit
• Number Of Words: 4M/2M
• Supply Current: 16mA
• Mounting: Surface Mount
• Pin Count: 48
• Lead Free Status / Rohs Status: Supplier Unconfirmed

10.3
10.4
10.5
34
Autoselect Command Sequence
Enter Secured Silicon Region/Exit Secured Silicon Region Command
Sequence
Byte/Word Program Command Sequence
The autoselect command sequence allows the host system to access the manufacturer and device codes,
and determine whether or not a sector is protected. The autoselect command sequence may be written to an
address within a bank that is either in the read or erase-suspend-read mode. The autoselect command may
not be written while the device is actively programming or erasing in another bank.
The autoselect command sequence is initiated by first writing two unlock cycles. This is followed by a third
write cycle that contains the bank address and the autoselect command. The bank then enters the autoselect
mode. The system may read any number of autoselect codes without reinitiating the command sequence.
Table 10.1 on page 39
information, the system must write to the appropriate bank address (BA) and sector address (SA).
on page 19
sector.
The system must write the reset command to return to the read mode (or erase-suspend-read mode if the
bank was previously in Erase Suspend).
The system can access the Secured Silicon Region region by issuing the three-cycle Enter Secured Silicon
Region command sequence. The device continues to access the Secured Silicon Region until the system
issues the four-cycle Exit Secured Silicon Region command sequence. The Exit Secured Silicon Region
command sequence returns the device to normal operation. The Secured Silicon Region is not accessible
when the device is executing an Embedded Program or embedded Erase algorithm.
shows the address and data requirements for both command sequences. See also
on page 28
when the Secured Silicon Region is enabled.
The system may program the device by word or byte, depending on the state of the BYTE# pin. Programming
is a four-bus-cycle operation. The program command sequence is initiated by writing two unlock write cycles,
followed by the program set-up command. The program address and data are written next, which in turn
initiate the Embedded Program algorithm. The system is not required to provide further controls or timings.
The device automatically provides internally generated program pulses and verifies the programmed cell
margin.
sequence.
When the Embedded Program algorithm is complete, that bank then returns to the read mode and addresses
are no longer latched. The system can determine the status of the program operation by using DQ7, DQ6, or
RY/BY#. Refer to
Any commands written to the device during the Embedded Program Algorithm are ignored. Note that a
hardware reset immediately terminates the program operation. The program command sequence should be
reinitiated once that bank has returned to the read mode, to ensure data integrity. Note that the Secured
Silicon Region, autoselect, and CFI functions are unavailable when a program operation is in progress.
Programming is allowed in any sequence and across sector boundaries. A bit cannot be programmed from
“0” back to a “1.” Attempting to do so may cause that bank to set DQ5 = 1, or cause the DQ7 and DQ6
status bits to indicate the operation was successful. However, a succeeding read will show that the data is still
“0.” Only erase operations can convert a “0” to a “1.”
Table 10.1 on page 39
and
for further information. Note that the ACC function and unlock bypass modes are not available
Table 8.4 on page 21
Write Operation Status on page 40
shows the address and data requirements. To determine sector protection
shows the address and data requirements for the byte program command
D a t a
show the address range and bank number associated with each
S29JL032J
S h e e t
for information on these status bits.
( P r e l i m i n a r y )
S29JL032J_00_03 August 25, 2010
Secured Silicon Region
Table 10.1 on page 39
Table 8.3