参数资料
型号: RCPXA272FC0312
厂商: INTEL CORP
元件分类: 微控制器/微处理器
英文描述: 312 MHz, MICROPROCESSOR, PBGA336
封装: 14 X 14 MM, 1.55 MM HEIGHT, 0.65 MM PITCH, LEAD FREE, CSP-336
文件页数: 120/138页
文件大小: 1048K
代理商: RCPXA272FC0312
Part 2: Flash Device Operations
Flash Erase Operations
82
Intel PXA27x Processor Family Memory Subsystem
erase operation can be suspended to perform a word or buffer program operation, or a read
operation within any block except the block that is erase suspended. See Figure 53, “Flash Program
When a block erase operation is executing, issuing the Erase Suspend command requests the WSM
to suspend the erase algorithm at predetermined points. The partition that is suspended continues to
output SRD after the Erase Suspend command is issued. Block erase is suspended when SR[7,6]
are set. Suspend latency is specified in Section 7.4, “Flash Program and Erase Characteristics” on
During Erase Suspend, a Program command can be issued to any block other than the erase-
suspended block. Block erase cannot resume until program operations initiated during erase
suspend complete. Read Array, Read Status Register, Read Device Identifier, CFI Query, and Erase
Resume are valid commands during Erase Suspend. Additionally, Clear Status Register, Program,
Program Suspend, Block Lock, Block Unlock, and Block Lock-Down are valid commands during
Erase Suspend.
During an erase suspend, deasserting F-CE# places the flash in standby, reducing active current.
F-VPP must remain at a valid level, and F-WP# must remain unchanged while in erase suspend. If
F-RST# is asserted, the flash is reset.
12.3
Flash Erase Resume
The Erase Resume command instructs the flash to continue erasing, and automatically clears status
register bits SR[7,6]. This command can be written to any partition. When read at the partition
that’s erasing, the flash outputs data corresponding to the partition’s last state. If status register
error bits are set, the Status Register should be cleared before issuing the next instruction. F-RST#
12.4
Flash Erase Protection
When F-VPP = VIL, absolute hardware erase protection is provided for all flash blocks.
If F-VPP ≤ VPPLK, erase operations halt and SR.3 is set indicating a F-VPP level error.
相关PDF资料
PDF描述
RCPXA271FC0312 312 MHz, MICROPROCESSOR, PBGA336
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