参数资料
型号: RCPXA273FC0416
厂商: INTEL CORP
元件分类: 微控制器/微处理器
英文描述: 416 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: 20/138页
文件大小: 1048K
代理商: RCPXA273FC0416
A. Flash Flowcharts
116
Intel PXA27x Processor Family Memory Subsystem
Figure 55.
Flash Buffered EFP Flowchart
2. Write-buffer contents are programmed sequentially
sequentially to the flash array starting at the first word
Write Data @ 1ST
Word Address
Last
Data?
Write 0xFFFF,
Address Not within
Current Block
Program
Done?
Read Status Reg.
Y
No (SR.7=0)
Full Status Check
Procedure
Program
Complete
Read Status Reg.
BEFP
Exited?
Yes (SR.7=1)
Start
Write 0x80 @
1ST Word Address
V
PP appl i ed,
Block unlocked
Write 0xD0 @
1ST Word Address
BEFP Setup
Done?
Read Status Reg.
Exit
N
Program & Verify Phase
Exit Phase
Setup Phase
X = 32?
Initialize Count:
X = 0
Increment Count:
X = X+1
Y
N
Check V
PP, Lock
Errors (SR[3,1])
Yes (SR.7=0)
Comments
Bus
State
Operation
BEFP setup delay
Data Stream
Ready?
Read Status Reg.
No (SR[0]=1)
Repeat for subsequent blocks;
After BEFP exit, a full Status Register check can
determine if any program error occurred;
See full Status Register check procedure in the
Word Program flowchart.
Write 0xFF to enter Read Array state.
Check SR.7:
0 = Exit Not Completed
1 = Exit Completed
Check Exit
Status
Read
Status
Register
Data = Status Reg. Data
Address = 1ST Word Addr
BEFP Exit
Standby
If SR.7 is set, check:
SR.3 set = V
PP Error
SR.1 set = Locked Block
Error
Condition
Check
Standby
Check SR.7:
0 = BEFP Ready
1 = BEFP Not Ready
BEFP
Setup
Done?
Standby
Data = Status Reg. Data
Address = 1ST Word Addr
Status
Register
Read
Data = 0xD0 @
1
ST Word
Address
BEFP
Confirm
Write
Data = 0x80 @ 1ST Word
Address
BEFP
Setup
Write
(Note 1)
V
PPH appl i ed to V PP
Unlock
Block
Write
BEFP Setup
Bus
State
Comments
Operation
No (SR.0=1)
Yes (SR.0=0)
No (SR.7=1)
Yes (SR.0=0)
BEFP Program & Verify
Comments
Bus State Operation
Write
(Note 2)
Load
Buffer
Standby
Increment
Count
Standby
Initialize
Count
Data = Data to Program
Address = 1ST Word Addr.
X = X+1
X = 0
Standby
Buffer
Full?
X = 32?
Yes = Read SR.0
No = Load Next Data Word
Read
Standby
Status
Register
Data Stream
Ready?
Data = Status Register Data
Address = 1ST Word Addr.
Check SR.0:
0 = Ready for Data
1 = Not Ready for Data
Read
Standby
Write
Status
Register
Program
Done?
Last
Data?
Exit Prog &
Verify Phase
Data = Status Reg. data
Address = 1ST Word Addr.
Check SR.0:
0 = Program Done
1 = Program in Progress
No = Fill buffer again
Yes = Exit
Data = 0xFFFF @ address not in
current block
Notes:
1. First-word address to be programmed
within the target block must be
aligned on a write-buffer boundary.
Address; WSM internally increments addressing.
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