28F640L30, 28F128L30, 28F256L30
5.5
5.6
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 partition. When read at the
partition that’s programming, the device outputs data corresponding to the partition’s last state. If
error bits are set, the Status Register should be cleared before issuing the next instruction. RST#
must remain deasserted (see Figure 31, “Program Suspend/Resume Flowchart” on page 75).
Program Protection
When VPP = VIL, absolute hardware write protection is provided for all device blocks. If VPP is
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 7. Example VPP Supply Connections
VCC
VCC
VCC
VPP
VCC
VPP
VPP
PROT#
10
KΩ
Factory Word Programming with VPP = VPPH
Low Voltage Programming Only
Logic Control of Device Protection
Complete Write/Erase Protection when VPP < VPPLK
VCC
VCC
VCC
VCC
VPP
VPP = VPPH
VPP
Low Voltage and Factory Word Programming
Low Voltage Programming Only
Full Device Protection Unavailable
Datasheet
35
INTEL [ INTEL ]
