- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98006 > M37534M4-XXXGP 8-BIT, MROM, 6 MHz, MICROCONTROLLER, PQFP32 PDF資料下載
參數(shù)資料
| 型號： | M37534M4-XXXGP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 6 MHz, MICROCONTROLLER, PQFP32 |
| 封裝： | 7 X 7 MM, 0.80 MM PITCH, PLASTIC, LQFP-32 |
| 文件頁數(shù)： | 32/58頁 |
| 文件大?。?/td> | 753K |
| 代理商： | M37534M4-XXXGP |
第1頁第2頁第3頁第4頁第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頁當前第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
7534 Group
Rev.3.00
Oct 23, 2006
page 36 of 53
REJ03B0099-0300
Fig. 43 External circuit of ceramic resonator
Fig. 44 External clock input circuit
Fig. 45 Structure of MISRG
Clock Generating Circuit
An oscillation circuit can be formed by connecting a resonator be-
tween XIN and XOUT.
Use the circuit constants in accordance with the resonator
manufacturer's recommended values. No external resistor is needed
between XIN and XOUT since a feed-back resistor exists on-chip. (An
external feed-back resistor may be needed depending on conditions.)
qOscillation control
Stop mode
When the STP instruction is executed, the internal clock
φ stops at
an “H” level and the XIN oscillator stops. At this time, timer 1 is set to
“0116” and prescaler 12 is set to “FF16” when the oscillation
stabilization time set bit after release of the STP instruction is “0”.
On the other hand, timer 1 and prescaler 12 are not set when the
above bit is “1”. Accordingly, set the wait time fit for the oscillation
stabilization time of the oscillator to be used.
f(XIN)/16 is forcibly connected to the input of prescaler 12.
When an external interrupt is accepted, oscillation is restarted but
the internal clock
φ remains at “H” until timer 1 underflows. As soon
as timer 1 underflows, the internal clock
φ is supplied. This is
because when a ceramic oscillator is used, some time is required
until a start of oscillation.
In case oscillation is restarted by reset, no wait time is generated.
______
So apply an “L” level to the RESET pin while oscillation becomes
stable.
Wait mode
If the WIT instruction is executed, the internal clock
φ stops at an
“H” level, but the oscillator does not stop. The internal clock restarts
if a reset occurs or when an interrupt is received.
Since the oscillator does not stop, normal operation can be started
immediately after the clock is restarted.
To ensure that interrupts will be received to release the STP or WIT
state, interrupt enable bits must be set to “1” before the STP or
WIT instruction is executed.
When the STP status is released, prescaler 12 and timer 1 will start
counting clock which is XIN divided by 16, so set the timer 1 inter-
rupt enable bit to “0” before the STP instruction is executed.
Note
For use with the oscillation stabilization set bit after release of the
STP instruction set to “1”, set values in timer 1 and prescaler
12 after fully appreciating the oscillation stabilization time of the
oscillator to be used.
Clock mode
Operation is started by an on-chip oscillator after releasing reset.
A division ratio (1/1,1/2,1/8) is selected by setting bits 7 and 6 of the
CPU mode register after releasing it.
XIN
XOUT
External oscillation
circuit
VCC
VSS
Open
MISRG(Address 003816)
b7
b0
Oscillation stabilization time set bit after
release of the STP instruction
0: Set “0116” in timer1, and “FF16”
in prescaler 12 automatically
1: Not set automatically
Reserved bits (return “0” when read)
(Do not write “1” to these bits)
Not used (return “0” when read)
XIN
COUT
CIN
XOUT
Rd (Note)
Note : Insert a damping resistor if required.
The resistance will vary depending on the oscillator and the
oscillation drive capacity setting.
Use the value recommended by the maker of the oscillator.
Also, if the oscillator manufacturer's data sheet specifies that
a feedback resistor be added external to the chip though a
feedback resistor exists on-chip, insert a feedback resistor
between XIN and XOUT following the instruction.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M37534M4-XXXGP | 8-BIT, MROM, 6 MHz, MICROCONTROLLER, PQFP32 |
| M37534E4GP | 8-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PQFP32 |
| M37548G3FP | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO20 |
| M37548G1FP | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO20 |
| M37548G2-XXXFP | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO20 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M37534M4-XXXSP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37534RSS | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37536E8SP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37536M4 | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37536M4-XXXSP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 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。