1-Gbit P30 Family
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 7.5,
“Program and Erase Characteristics” on page 45.
To read data from the device, the Read Array command must be issued. Read Array, Read Status
Register, Read Device Identifier, CFI Query, 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.
11.5
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 41, “Program Suspend/Resume Flowchart” on page 86).
11.6
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 31.
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
April 2005
66
Intel StrataFlash® Embedded Memory (P30)
Order Number: 306666, Revision: 001
Datasheet
INTEL [ INTEL ]
