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參數(shù)資料
| 型號： | 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 |
| 文件頁數(shù)： | 46/91頁 |
| 文件大?。?/td> | 1161K |
| 代理商： | M38514E6FP |
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Rev.1.01
Oct 15, 2003
page 50 of 89
3851 Group (Built-in 24 KB or more ROM)
Fig. 57 Block diagram of built-in flash memory
(1) CPU Rewrite Mode
In CPU rewrite mode, the internal flash memory can be operated
on (read, program, or erase) under control of the Central Process-
ing Unit (CPU).
In CPU rewrite mode, only the User ROM area shown in Figure 57
can be rewritten; the Boot ROM area cannot be rewritten. Make
sure the program and block erase commands are issued for only
the User ROM area and each block area.
The control program for CPU rewrite mode can be stored in either
User ROM or Boot ROM area. In the CPU rewrite mode, because
the flash memory cannot be read from the CPU, the rewrite con-
trol program must be transferred to internal RAM area to be
executed before it can be executed.
Microcomputer Mode and Boot Mode
The control program for CPU rewrite mode must be written into
the User ROM or Boot ROM area in parallel I/O mode beforehand.
(If the control program is written into the Boot ROM area, the stan-
dard serial I/O mode becomes unusable.)
See Figure 57 for details about the Boot ROM area.
Normal microcomputer mode is entered when the microcomputer
is reset with pulling CNVSS pin low. In this case, the CPU starts
operating using the control program in the User ROM area.
When the microcomputer is reset by pulling the P41/INT0 pin high,
the CNVss pin high, the CPU starts operating using the control
program in the Boot ROM area (program start address is FFFC16,
FFFD16 fixation). This mode is called the “Boot” mode.
Block Address
Block addresses refer to the maximum address of each block.
These addresses are used in the block erase command. In case
of the M38517F8, it has only one block.
800016
Block 1 : 32 kbyte
User ROM area
4 kbyte
F00016
FFFF16
Boot ROM area
Notes 1: The Boot ROM area can be rewritten in only parallel
input/output mode. (Access to any other areas is inhibited.)
2: To specify a block, use the maximum address in the block.
Product name
Flash memory
start address
M38517F8800016
Parallel I/O mode
800016
Block 1 : 32 kbyte
FFFF16
CPU rewrite mode, standard serial I/O mode
User ROM area
4 kbyte
F00016
FFFF16
Boot ROM area
BSEL = 0
BSEL = 1
User area / Boot area selection bit = 0
User area / Boot area selection bit = 1
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:- 標準包裝: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 標準包裝: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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