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參數(shù)資料
| 型號(hào)： | PSD813F |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Flash In-System-Programmable Microcontroller Peripherals(閃速，在系統(tǒng)可編程微控制器外圍器件，1M位閃速存儲(chǔ)器，256K位EEPROM，16K位SRAM) |
| 中文描述： | Flash在系統(tǒng)可編程微控制器外圍設(shè)備（閃速，在系統(tǒng)可編程微控制器外圍器件，100萬(wàn)位閃速存儲(chǔ)器，256K位的EEPROM，16K的位的SRAM） |
| 文件頁(yè)數(shù)： | 30/130頁(yè) |
| 文件大小： | 650K |
| 代理商： | PSD813F |
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PSD813F Famly
Prelimnary
26
9.1.1.7.2 Data Toggle
Checking the Data Toggle bit on DQ6 is a method of determining whether a Program or
Erase instruction is in progress or has completed. Figure 6 shows the Data Toggle
algorithm.
When the MCU issues a programming instruction, the embedded algorithm within the
PSD813F begins. The MCU then reads the location of the byte to be programmed in
Flash to check status. Data bit DQ6 of this location will toggle each time the MCU reads
this location until the embedded algorithm is complete. The MCU continues to read this
location, checking DQ6 and monitoring the Error bit on DQ5. When DQ6 stops toggling
(two consecutive reads yield the same value), and the Error bit on DQ5 remains ‘0’, then
the embedded algorithm is complete. If the Error bit on DQ5 is ‘1’, the MCU should test
DQ6 again, since DQ6 may have changed simultaneously with DQ5 (see Figure 6).
The Error bit at DQ5 will be set if either an internal timeout occurred while the embedded
algorithm attempted to program the byte, or if the MCU attempted to program a ‘1’ to a bit
that was not erased (not erased is logic ‘0’).
It is suggested (as with all Flash memories) to read the location again after the embedded
programming algorithm has completed to compare the byte that was written to Flash with
the byte that was intended to be written.
When using the Data Toggle method after an erase instructin, Figure 6 still applies. DQ6 will
toggle until the erase operation is complete. A ‘1’ on DQ5 will indicate a timeout failure of
the erase operation, a ‘0’ indicates no error. The MCU can read any location within the
sector being erased to get DQ6 and DQ5.
PSDsoft will generate ANSI C code functions which implement these Data Toggling
algorithms.
The
PSD813F
Functional
Blocks
(cont.)
Figure 6. Data Toggle Flow Chart
START
READ
DQ5 & DQ6
NO
YES
NO
YES
YES
NO
=
TOGGLE
DQ5
=1
=
TOGGLE
READ DQ6
FAIL
PASS
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PSD813FH(中文) | Field Programmble Microcontroller Peripherals With Flash Memory(帶閃存的現(xiàn)場(chǎng)可編程微控制器) |
| PSD813FN(中文) | Field Programmble Microcontroller Peripherals(帶閃存的現(xiàn)場(chǎng)可編程微控制器) |
| PSD813FN | Field Programmble Microcontroller Peripherals(帶閃存的現(xiàn)場(chǎng)可編程微控制器) |
| PSD813FH | Field Programmble Microcontroller Peripherals With Flash Memory(帶閃存的現(xiàn)場(chǎng)可編程微控制器) |
| PSD82 | Three Phase Rectifier Bridges |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PSD813F1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System Programmable ISP Peripherals For 8-bit MCUs |
| PSD813F1A | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash in-system programmable (ISP) peripherals for 8-bit MCUs, 5 V |
| PSD813F1-A | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System Programmable ISP Peripherals For 8-bit MCUs |
| PSD813F1A-12J | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System Programmable (ISP) Peripherals for 8-bit MCUs, 5V |
| PSD813F1-A-12JI | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System Programmable ISP Peripherals For 8-bit MCUs |
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