P30-65nm
program operation that is running during an erase suspend can be suspended to
perform a read operation (see Figure 31, “Program Suspend/Resume Flowchart” on
page 73).
When a programming operation is executing, issuing the Program Suspend command
requests the WSM to suspend the programming algorithm at predetermined points. The
device continues to output Status Register data after the Program Suspend command is
issued. Programming is suspended when Status Register bits SR[7,2] are set. Suspend
latency is specified in Section 15.5, “Program and Erase Characteristics” on page 59.
To read data from the device, the Read Array command must be issued. Read Array,
Read Status Register, Read Device Identifier, Read CFI, and Program Resume are valid
commands during a program suspend.
During a program suspend, deasserting CE# places the device in standby, reducing
active current. VPP must remain at its programming level, and WP# must remain
unchanged while in program suspend. If RST# is asserted, the device is reset.
8.5
8.6
Program Resume
The Resume command instructs the device to continue programming, and
automatically clears Status Register bits SR[7,2]. This command can be written to any
address. If error bits are set, the Status Register should be cleared before issuing the
next instruction. RST# must remain deasserted (see Figure 32, “Buffer Program
Flowchart” on page 74).
Program Protection
When VPP = VIL, absolute hardware write protection is provided for all device blocks. If
VPP is at or below VPPLK, programming operations halt and SR.3 is set indicating a VPP-
level error. Block Lock Registers are not affected by the voltage level on VPP; they may
still be programmed and read, even if VPP is less than VPPLK
.
Figure 8: Example VPP Supply Connections
VCC
VCC
VPP
VCC
VPP
VCC
VPP
PROT #
≤ 10K Ω
• Low-voltage Programming only
• Logic Control of Device Protection
• Factory Programming with VPP = VPPH
• Complete write/Erase Protection when VPP ≤ VPPLK
VCC
VCC
VCC
VCC
VPP
VPP=VPPH
VPP
• Low Voltage Programming Only
• Full Device Protection Unavailable
• Low Voltage and Factory Programming
Datasheet
28
Sept 2012
Order Number: 208042-06
MICRON [ MICRON TECHNOLOGY ]
