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參數(shù)資料
| 型號(hào)： | M38514E6FP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, OTPROM, 4 MHz, MICROCONTROLLER, PDSO42 |
| 封裝： | 0.450 INCH, 0.80 MM PITCH, PLASTIC, SSOP-42 |
| 文件頁(yè)數(shù)： | 49/91頁(yè) |
| 文件大?。?/td> | 1161K |
| 代理商： | M38514E6FP |
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Rev.1.01
Oct 15, 2003
page 53 of 89
3851 Group (Built-in 24 KB or more ROM)
Precautions on CPU Rewrite Mode
Described below are the precautions to be observed when rewriting
the flash memory in CPU rewrite mode.
(1) Operation speed
During CPU rewrite mode, set the internal clock frequency 4.0
MHz or less using the main clock division ratio selection bits (bit
6, 7 at 003B16).
(2) Instructions inhibited against use
The instructions which refer to the internal data of the flash
memory cannot be used during CPU rewrite mode .
(3) Interrupts inhibited against use
The interrupts cannot be used during CPU rewrite mode be-
cause they refer to the internal data of the flash memory.
(4) Watchdog timer
In case of the watchdog timer has been running already, the in-
ternal reset generated by watchdog timer underflow does not
happen, because of watchdog timer is always clearing during
program or erase operation.
(5) Reset
Reset is always valid. In case of CNVSS = H when reset is re-
leased, boot mode is active. So the program starts from the ad-
dress contained in address FFFC16 and FFFD16 in boot ROM
area.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M38514M6-XXXFP | 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PDSO42 |
| M38514E6-XXXSP | 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PDIP42 |
| M38517F8SP | 8-BIT, FLASH, 4 MHz, MICROCONTROLLER, PDIP42 |
| M38517F8FP | 8-BIT, FLASH, 4 MHz, MICROCONTROLLER, PDSO42 |
| M38517F8SP | 8-BIT, FLASH, 4 MHz, MICROCONTROLLER, PDIP42 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M38514E6SP | 制造商:Renesas Electronics Corporation 功能描述:SLIM740 OTP 24K/640B RAM, W/A-D, I2C, L - Rail/Tube |
| M38517T-ADS | 功能描述:DEV TMP TRGT BRD FOR M38517RSS & RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 配件 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 附件類型:適配器板 適用于相關(guān)產(chǎn)品:RCB230，RCB231，RCB212 配用:26790D-ND - RCB BREAKOUT BOARD RS232 CABLE |
| M38517T-PAC | 功能描述:DEV SIMPLE TOOL EMULATOR FOR M38 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 內(nèi)電路編程器、仿真器以及調(diào)試器 系列:- 產(chǎn)品變化通告:Development Systems Discontinuation 19/Jul/2010 標(biāo)準(zhǔn)包裝:1 系列:* 類型:* 適用于相關(guān)產(chǎn)品:* 所含物品:* |
| M3852 BK001 | 制造商:Alpha Wire 功能描述:CBL 8COND 14AWG BLK 1000' |
| M3852 BK002 | 制造商:Alpha Wire 功能描述:CBL 8COND 14AWG BLK 500' |
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