- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄45034 > M37540M4-XXXSP 8-BIT, MROM, 6 MHz, MICROCONTROLLER, PDIP32 PDF資料下載
參數(shù)資料
| 型號： | M37540M4-XXXSP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 6 MHz, MICROCONTROLLER, PDIP32 |
| 封裝： | 0.400 INCH, 1.78 MM PITCH, PLASTIC, SDIP-32 |
| 文件頁數(shù)： | 5/88頁 |
| 文件大小： | 872K |
| 代理商： | M37540M4-XXXSP |
第1頁第2頁第3頁第4頁當前第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁
7540 Group
Rev.4.00
Jun 21, 2004
page 13 of 82
REJ03B0011-0400Z
[CPU mode register] CPUM
The CPU mode register contains the stack page selection bit.
This register is allocated at address 003B16.
Switching method of CPU mode register
Switch the CPU mode register (CPUM) at the head of program af-
ter releasing Reset in the following method.
Fig. 12 Switching method of CPU mode register
Fig. 11 Structure of CPU mode register
Oscillation mode selection bit (Note 1)
0 : Ceramic oscillation
1 : RC oscillation
CPU mode register
(CPUM: address 003B16, initial value: 8016)
Stack page selection bit
0 : 0 page
1 : 1 page
Clock division ratio selection bits
b7 b6
0
0 : f(
φ) = f(XIN)/2 (High-speed mode)
0
1 : f(
φ) = f(XIN)/8 (Middle-speed mode)
1
0 : applied from on-cihp oscillator
1
1 : f(
φ) = f(XIN) (Double-speed mode)(Note 2)
On-chip oscillator oscillation control bit
0 : On-chip oscillator oscillation enabled
1 : On-chip oscillator oscillation stop
XIN oscillation control bit
0 : Ceramic or RC oscillation enabled
1 : Ceramic or RC oscillation stop
Processor mode bits (Note 1)
b1 b0
0
0 Single-chip mode
0
1
0
1
Not available
b7
b0
2: These bits are used only when a ceramic oscillation is selected.
Note 1: The bit can be rewritten only once after releasing reset. After rewriting
it is disable to write any data to the bit. However, by reset the bit is
initialized and can be rewritten, again.
(It is not disable to write any data to the bit for emulator MCU
“M37540RSS”.)
Do not use these when an RC oscillation is selected.
After releasing reset
Switch the oscillation mode
selection bit (bit 5 of CPUM)
Switch the clock division ratio
selection bits (bits 6 and 7 of CPUM)
Main routine
Start with an on-chip oscillator
An initial value is set as a ceramic
oscillation mode. When it is switched to an
RC oscillation, its oscillation starts.
Select 1/1, 1/2, 1/8 or on-chip oscillator.
Wait by on-chip oscillator operation
until establishment of oscillator clock
When using a ceramic oscillation, wait until
establlishment of oscillation from oscillation starts.
When using an RC oscillation, wait time is not required
basically (time to execute the instruction to switch from
an on-chip oscillator meets the requirement).
相關PDF資料 |
PDF描述 |
|---|---|
| M37540E8T-XXXFP | 8-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PQFP32 |
| M37540E2FP | 8-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PQFP32 |
| M37542F8GP | 8-BIT, FLASH, 4 MHz, MICROCONTROLLER, PQFP32 |
| M37542M4-XXXSP | 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PDIP32 |
| M37542F8SP | 8-BIT, FLASH, 4 MHz, MICROCONTROLLER, PDIP32 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| M37540MXT-XXXGP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37540MXV-XXXGP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37540MX-XXXGP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37540RSS | 功能描述:EMULATOR ACCESSORY RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 配件 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program RoHS指令信息:IButton RoHS Compliance Plan 標準包裝:1 系列:- 附件類型:USB 至 1-Wire? RJ11 適配器 適用于相關產(chǎn)品:1-Wire? 設備 產(chǎn)品目錄頁面:1429 (CN2011-ZH PDF) |
| M37542F4FP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
發(fā)布緊急采購，3分鐘左右您將得到回復。