參數(shù)資料
型號(hào)： MB90F949APF
元件分類： 微控制器/微處理器
英文描述： MICROCONTROLLER, PQFP100
封裝： 14 X 20 MM, 3.35 MM HEIGHT, 0.65 MM PITCH, PLASTIC, QFP-100
文件頁(yè)數(shù)： 2/57頁(yè)
文件大?。?/td> 1586K
代理商： MB90F949APF
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
7544 Group
MITSUBISHI MICROCOMPUTERS
10
PRELIMINAR
Y
Notice:
This
is not
a final
specification.
Some
parametric
limits
are
subject
to change.
[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. 10 Switching method of CPU mode register
Fig. 9 Structure of CPU mode register
Oscillation mode selection bit (Note 1)
0 : Ceramic / quartz-crystal 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 ring oscillator
1
1 : f(
φ) = f(XIN) (Double-speed mode)(Note 2)
Ring oscillator oscillation control bit
0 : Ring oscillator oscillation enabled
1 : Ring oscillator oscillation stop
XIN oscillation control bit
0 : Ceramic / quartz-crystal or RC oscillation enabled
1 : Ceramic / quartz-crystal 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 / quartz-crystal 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
“M37544RSS”.)
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 a built-in ring oscillator
An initial value is set as a ceramic / quartz-crystal
oscillation mode. When it is switched to an RC
oscillation, its oscillation starts.
Select 1/1, 1/2, 1/8 or ring oscillator.
Wait by ring oscillator operation until
establishment of oscillator clock
When using a ceramic / quartz-crystal 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
a ring oscillator meets the requirement).
相關(guān)PDF資料
PDF描述
MB90947APF MICROCONTROLLER, PQFP100
MB90F947PF 16-BIT, FLASH, 24 MHz, MICROCONTROLLER, PQFP100
MB90F949PF 16-BIT, FLASH, 24 MHz, MICROCONTROLLER, PQFP100
MB90F967SPMT 16-BIT, FLASH, 24 MHz, MICROCONTROLLER, PQFP48
MB90P214PF 16-BIT, OTPROM, 16 MHz, MICROCONTROLLER, PQFP80
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MB90F962SPMCR-GE1 制造商:FUJITSU 功能描述:IC MCU 16BIT 16LX 48LQFP
MB90F962SPMCR-G-JNE1 制造商:FUJITSU 功能描述:
MB90V340A-102CR 制造商:FUJITSU 功能描述:
MB-910 制造商:Circuit Test 功能描述:BREADBOARD WIRING KIT - 350 PCS
MB9100100 制造商:COM/DUO 功能描述:FAN 4-6WKS
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*