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| 型號(hào)： | PSD4256G6V-10UIT |
| 廠商： | STMICROELECTRONICS |
| 元件分類(lèi)： | 微控制器/微處理器 |
| 英文描述： | 1M X 8 FLASH, 52 I/O, PIA-GENERAL PURPOSE, PQFP80 |
| 封裝： | PLASTIC, TQFP-80 |
| 文件頁(yè)數(shù)： | 65/127頁(yè) |
| 文件大?。?/td> | 1091K |
| 代理商： | PSD4256G6V-10UIT |
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Programming Flash memory
PSD4256G6V
since the Toggle Flag bit (DQ6/DQ14) may have changed simultaneously with the Error Flag
bit (DQ5/DQ13) (see Figure 6).
The Error Flag bit (DQ5/DQ13) is set if either an internal timeout occurred while the
embedded algorithm attempted to program, 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 word that was written to Flash
memory with the word that was intended to be written.
When using the data toggle method after an Erase cycle, Figure 6 still applies. the Toggle
Flag bit (DQ6/DQ14) toggles until the Erase cycle is complete. A '1' on the Error Flag bit
(DQ5/DQ13) indicates a timeout condition on the Erase cycle, a '0' indicates no error. The
MCU can read any even location within the sector being erased to get the Toggle Flag bit
(DQ6/DQ14) and the Error Flag bit (DQ5/DQ13).
PSDsoft generates ANSI C code functions which implement these Data Toggling algorithms.
8.3
Unlock Bypass
The Unlock Bypass instruction allows the system to program words to the Flash memories
faster than using the standard Program instruction. The Unlock Bypass mode is entered by
first initiating two Unlock cycles. This is followed by a third WRITE cycle containing the
Unlock Bypass command, 20h (as shown in Table 29: 16-bit instructions and Table 30: 8-bit
instructions). The Flash memory then enters the Unlock Bypass mode.
A two-cycle Unlock Bypass Program instruction is all that is required to program in this
mode. The first cycle in this instruction contains the Unlock Bypass Program command,
A0h. The second cycle contains the program address and data. Additional data is
programmed in the same manner. This mode dispense with the initial two Unlock cycles
required in the standard Program instruction, resulting in faster total programming time.
During the unlock bypass mode, only the Unlock Bypass Program and Unlock Bypass Reset
instructions are valid.
To exit the Unlock Bypass mode, the system must issue the two-cycle Unlock Bypass Reset
instruction. The first cycle must contain the data 90h; the second cycle the data 00h.
Addresses are “Don’t care” for both cycles. The Flash memory then returns to Read mode.
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| PSD6407 | POSITION SENSITIVE DETECTOR |
| PSD813F2-15JT | 128K X 8 FLASH, 27 I/O, PIA-GENERAL PURPOSE, PQCC52 |
| PSD813F5V-20MT | 128K X 8 FLASH, 27 I/O, PIA-GENERAL PURPOSE, PQFP52 |
| PSD853F2-15JIT | 128K X 8 FLASH, 27 I/O, PIA-GENERAL PURPOSE, PQCC52 |
| PSD833F2-15M | 1M X 1 FLASH, 27 I/O, PIA-GENERAL PURPOSE, PQFP52 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PSD4-36 | 制造商:Tamura Corporation of America 功能描述: |
| PSD-45 | 制造商:MEANWELL 制造商全稱(chēng):Mean Well Enterprises Co., Ltd. 功能描述:45W DC-DC Single Output Switching Power Supply |
| PSD-45_11 | 制造商:MEANWELL 制造商全稱(chēng):Mean Well Enterprises Co., Ltd. 功能描述:45W DC-DC Single Output Switching Power Supply |
| PSD-45A-05 | 功能描述:線性和開(kāi)關(guān)式電源 30W 5Vout 6A Input 9.2-18VDC RoHS:否 制造商:TDK-Lambda 產(chǎn)品:Switching Supplies 開(kāi)放式框架/封閉式:Enclosed 輸出功率額定值:800 W 輸入電壓:85 VAC to 265 VAC 輸出端數(shù)量:1 輸出電壓（通道 1）:20 V 輸出電流（通道 1）:40 A 商用/醫(yī)用: 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:Rack 長(zhǎng)度: 寬度: 高度: |
| PSD-45A-12 | 功能描述:線性和開(kāi)關(guān)式電源 30W 12Vout 2.5A Input 9.2-18VDC RoHS:否 制造商:TDK-Lambda 產(chǎn)品:Switching Supplies 開(kāi)放式框架/封閉式:Enclosed 輸出功率額定值:800 W 輸入電壓:85 VAC to 265 VAC 輸出端數(shù)量:1 輸出電壓（通道 1）:20 V 輸出電流（通道 1）:40 A 商用/醫(yī)用: 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:Rack 長(zhǎng)度: 寬度: 高度: |
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