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參數(shù)資料
| 型號(hào)： | UPSD3433EV-40U6 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Turbo Plus Series Fast Turbo 8032 MCU with USB and Programmable Logic |
| 中文描述： | Turbo Plus系列高速渦輪8032 USB和可編程邏輯控制器 |
| 文件頁(yè)數(shù)： | 205/293頁(yè) |
| 文件大?。?/td> | 2039K |
| 代理商： | UPSD3433EV-40U6 |
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uPSD34xx
PSD module
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28.5.7
Toggle flag (DQ6)
The Flash memories offer an alternate way to determine when a Flash memory program
operation has completed. During the program operation and while the correct sector select
FSx or CSBOOTx is active, the Toggle Flag Bit (DQ6) toggles from '0' to '1' and '1' to ’0’ on
subsequent attempts to read any byte of the same Flash array.
When the internal program operation is complete, the toggling stops and the data read on
the data bus D0-7 is the actual value of the addressed memory byte. The device is now
accessible for a new READ or WRITE operation. The operation is finished when two
successive READs yield the same value for DQ6.
DQ6 may also be used to indicate when an erase operation has completed. During an erase
operation, DQ6 will toggle from '0' to '1' and '1' to ’0’ until the erase operation is complete,
then DQ6 stops toggling. The erase is finished when two successive READs yield the same
value of DQ6. The correct sector select signal, FSx or CSBOOTx, must be active during the
entire procedure.
DQ6 is valid after the fourth instruction byte WRITE operation (for program instruction
sequence) or after the sixth instruction byte WRITE operation (for erase instruction
sequence).
If all the Flash memory sectors selected for erasure are protected, DQ6 toggles to ’0’ for
about 100μs, then returns value of D6 of the previously addressed byte.
Error Flag (DQ5).
During a normal program or erase operation, the Error Flag Bit (DQ5) is
to ’0’. This bit is set to ’1’ when there is a failure during Flash memory byte program, sector
erase, or bulk erase operations.
In the case of Flash memory programming, DQ5 Bit indicates an attempt to program a Flash
memory bit from the programmed state of '0,' to the erased state of 1, which is not valid.
DQ5 may also indicate a particular Flash cell is damaged and cannot be programmed.
In case of an error in a Flash memory sector erase or byte program operation, the Flash
memory sector in which the error occurred or to which the programmed byte belongs must
no longer be used. Other Flash memory sectors may still be used. DQ5 is reset after a
Reset Flash instruction sequence.
28.5.8
Erase time-out flag (DQ3)
The Erase Time-out Flag Bit (DQ3) reflects the time-out period allowed between two
consecutive sector erase instruction sequence bytes. If multiple sector erase commands are
desired, the additional sector erase commands (30h) must be sent by the 8032 within 80us
after the previous sector erase command. DQ3 is 0 before this time period has expired,
indicating it is OK to issue additional sector erase commands. DQ3 will go to logic ’1’ if the
time has been longer than 80μs since the previous sector erase command (time has
expired), indication that is not OK to send another sector erase command. In this case, the
8032 must start a new sector erase instruction sequence (unlock and command) beginning
again after the current sector erase operation has completed.
28.5.9
Programming Flash memory.
When a byte of Flash memory is programmed, individual bits are programmed to logic '0.'
cannot program a bit in Flash memory to a logic ’1’ once it has been programmed to a logic
'0.' A bit must be erased to logic ’1’, and programmed to logic '0.' That means Flash memory
must be erased prior to being programmed. A byte of Flash memory is erased to all 1s
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| UPSD3433EVB40T6 | 功能描述:8位微控制器 -MCU uPSD34x Turbo Plus Fast Turbo 8032 MCU RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| UPSD3433EVB40U6 | 功能描述:8位微控制器 -MCU uPSD34x Turbo Plus Fast Turbo 8032 MCU RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| UPSD3434E-40T6 | 功能描述:8位微控制器 -MCU uPSD34x Turbo Plus Fast Turbo 8032 MCU RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| UPSD3434E-40U6 | 功能描述:8位微控制器 -MCU 8 BITS MICROCONTR RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| UPSD3434EB40T6 | 功能描述:8位微控制器 -MCU Turbo 8032 MCU w/USB & Programmable Logic RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
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