- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄45041 > M38039G8HKP 8-BIT, MROM, 8.4 MHz, MICROCONTROLLER, PQFP64 PDF資料下載
參數(shù)資料
| 型號： | M38039G8HKP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 8.4 MHz, MICROCONTROLLER, PQFP64 |
| 封裝： | 14 X 14 MM, 0.80 MM PITCH, PLASTIC, LQFP-64 |
| 文件頁數(shù)： | 69/103頁 |
| 文件大?。?/td> | 1412K |
| 代理商： | M38039G8HKP |
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頁當(dāng)前第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頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁
REJ03B0166-0113 Rev.1.13
Aug 21, 2009
Page 68 of 100
3803 Group (Spec.H QzROM version)
CLOCK GENERATING CIRCUIT
The 3803 group (Spec.H QzROM version) has two built-in
oscillation circuits: main clock XIN-XOUT oscillation circuit and
sub clock XCIN-XCOUT oscillation circuit. An oscillation circuit
can be formed by connecting a resonator between XIN and XOUT
(XCIN and XCOUT). 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.) However, an external feed-
back resistor is needed between XCIN and XCOUT.
Immediately after power on, only the XIN oscillation circuit
starts oscillating, and XCIN and XCOUT pins function as I/O ports.
Frequency Control
(1) Middle-speed mode
The internal clock
φ is the frequency of XIN divided by 8. After
reset is released, this mode is selected.
(2) High-speed mode
The internal clock
φ is half the frequency of XIN.
(3) Low-speed mode
The internal clock
φ is half the frequency of XCIN.
(4) Low power dissipation mode
The low power consumption operation can be realized by
stopping the main clock XIN in low-speed mode. To stop the
main clock, set bit 5 of the CPU mode register to “1”. When the
main clock XIN is restarted (by setting the main clock stop bit to
“0”), set sufficient time for oscillation to stabilize.
The sub-clock XCIN-XCOUT oscillating circuit can not directly
input clocks that are generated externally. Accordingly, make
sure to cause an external resonator to oscillate.
Oscillation Control
(1) Stop mode
If the STP instruction is executed, the internal clock
φ stops at an
“H” level, and XIN and XCIN oscillators stop. When the
oscillation stabilizing time set after STP instruction released bit
(bit 0 of address 001016) is “0”, the prescaler 12 is set to “FF16”
and timer 1 is set to “0116”. When the oscillation stabilizing time
set after STP instruction released bit is “1”, set the sufficient time
for oscillation of used oscillator to stabilize since nothing is set to
the prescaler 12 and timer 1.
After STP instruction is released, the input of the prescaler 12 is
connected to count source which had set at executing the STP
instruction, and the output of the prescaler 12 is connected to
timer 1. Oscillator restarts when an external interrupt is received,
but the internal clock
φ is not supplied to the CPU (remains at
“H”) until timer 1 underflows. The internal clock
φ is supplied
for the first time, when timer 1 underflows. This ensures time for
the clock oscillation using the ceramic resonators to be
stabilized. When the oscillator is restarted by reset, apply “L”
level to the RESET pin until the oscillation is stable since a wait
time will not be generated.
(2) 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
φ
restarts at reset 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 the interrupts will be received to release the STP
or WIT state, their interrupt enable bits must be set to “1” before
executing of the STP or WIT instruction.
When releasing the STP state, the prescaler 12 and timer 1 will
start counting the clock XIN divided by 16. Accordingly, set the
timer 1 interrupt enable bit to “0” before executing the STP
instruction.
<Notes>
If you switch the mode between middle/high-speed and low-
speed, stabilize both XIN and XCIN oscillations. The sufficient
time is required for the sub clock to stabilize, especially
immediately after power on and at returning from stop mode.
When switching the mode between middle/high-speed and
low-speed, set the frequency on condition that f(XIN) >
3
×f(XCIN).
When using the quartz-crystal oscillator of high frequency,
such as 16 MHz etc., it may be necessary to select a specific
oscillator with the specification demanded.
When using the oscillation stabilizing time set after STP
instruction released bit set to “1”, evaluate time to stabilize
oscillation of the used oscillator and set the value to the timer 1
and prescaler 12.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M38049FFHHP | 8-BIT, FLASH, 8.4 MHz, MICROCONTROLLER, PQFP64 |
| M38049FFHSP | 8-BIT, FLASH, 8.4 MHz, MICROCONTROLLER, PDIP64 |
| M38049FFHFP | 8-BIT, FLASH, 8.4 MHz, MICROCONTROLLER, PQFP64 |
| M38049FFHHP | 8-BIT, FLASH, 8.4 MHz, MICROCONTROLLER, PQFP64 |
| M38049FFHKP | 8-BIT, FLASH, 8.4 MHz, MICROCONTROLLER, PQFP64 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M38039G8HKP#U0 | 功能描述:IC 740/3803 MCU QZROM 64LQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:740/38000 標(biāo)準(zhǔn)包裝:250 系列:80C 核心處理器:8051 芯體尺寸:8-位 速度:16MHz 連通性:EBI/EMI，I²C，UART/USART 外圍設(shè)備:POR，PWM，WDT 輸入/輸出數(shù):40 程序存儲器容量:- 程序存儲器類型:ROMless EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4.5 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 8x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:68-LCC（J 形引線） 包裝:帶卷 (TR) |
| M38039G8HSP#U0 | 功能描述:IC 740/3803 MCU QZROM 64DIP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:740/38000 標(biāo)準(zhǔn)包裝:250 系列:80C 核心處理器:8051 芯體尺寸:8-位 速度:16MHz 連通性:EBI/EMI，I²C，UART/USART 外圍設(shè)備:POR，PWM，WDT 輸入/輸出數(shù):40 程序存儲器容量:- 程序存儲器類型:ROMless EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4.5 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 8x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:68-LCC（J 形引線） 包裝:帶卷 (TR) |
| M38039GCHHP#U0 | 功能描述:IC 740/3803 MCU QZROM 64LQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:740/38000 標(biāo)準(zhǔn)包裝:250 系列:80C 核心處理器:8051 芯體尺寸:8-位 速度:16MHz 連通性:EBI/EMI，I²C，UART/USART 外圍設(shè)備:POR，PWM，WDT 輸入/輸出數(shù):40 程序存儲器容量:- 程序存儲器類型:ROMless EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4.5 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 8x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:68-LCC（J 形引線） 包裝:帶卷 (TR) |
| M38039GCHKP#U0 | 功能描述:IC 740/3803 MCU QZROM 64LQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:740/38000 標(biāo)準(zhǔn)包裝:250 系列:80C 核心處理器:8051 芯體尺寸:8-位 速度:16MHz 連通性:EBI/EMI，I²C，UART/USART 外圍設(shè)備:POR，PWM，WDT 輸入/輸出數(shù):40 程序存儲器容量:- 程序存儲器類型:ROMless EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4.5 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 8x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:68-LCC（J 形引線） 包裝:帶卷 (TR) |
| M38039GCHSP#U0 | 功能描述:IC 740/3803 MCU QZROM 64DIP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:740/38000 標(biāo)準(zhǔn)包裝:250 系列:80C 核心處理器:8051 芯體尺寸:8-位 速度:16MHz 連通性:EBI/EMI，I²C，UART/USART 外圍設(shè)備:POR，PWM，WDT 輸入/輸出數(shù):40 程序存儲器容量:- 程序存儲器類型:ROMless EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4.5 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 8x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:68-LCC（J 形引線） 包裝:帶卷 (TR) |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。