- 您現在的位置：買賣IC網 > PDF目錄102744 > MC68332GCPV25 (MOTOROLA INC) 32-BIT, 25 MHz, MICROCONTROLLER, PQFP144 PDF資料下載
參數資料
| 型號： | MC68332GCPV25 |
| 廠商： | MOTOROLA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 32-BIT, 25 MHz, MICROCONTROLLER, PQFP144 |
| 封裝： | PLASTIC, LQFP-144 |
| 文件頁數： | 28/111頁 |
| 文件大小： | 650K |
| 代理商： | MC68332GCPV25 |
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頁當前第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頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁
MC68332
MOTOROLA
MC68332TS/D
23
3.3 System Clock
The system clock in the SIM provides timing signals for the IMB modules and for an external peripheral
bus. Because MCU operation is fully static, register and memory contents are not affected when the
clock rate changes. System hardware and software support changes in the clock rate during operation.
The system clock signal can be generated in three ways. An internal phase-locked loop can synthesize
the clock from an internal or external frequency source, or the clock signal can be input from an external
source.
Following is a block diagram of the clock submodule.
Figure 7 System Clock Block Diagram
3.3.1 Clock Sources
The state of the clock mode (MODCLK) pin during reset determines the clock source. When MODCLK
is held high during reset, the clock synthesizer generates a clock signal from either a crystal oscillator
or an external reference input. Clock synthesizer control register SYNCR determines operating frequen-
cy and various modes of operation. When MODCLK is held low during reset, the clock synthesizer is
disabled, and an external system clock signal must be applied. When the synthesizer is disabled, SYN-
CR control bits have no effect.
A reference crystal must be connected between the EXTAL and XTAL pins to use the internal oscillator.
Use of a 32.768-kHz crystal is recommended. These crystals are inexpensive and readily available. If
an external reference signal or an external system clock signal is applied through the EXTAL pin, the
XTAL pin must be left floating. External reference signal frequency must be less than or equal to max-
imum specified reference frequency. External system clock signal frequency must be less than or equal
to maximum specified system clock frequency.
SYS CLOCK
BLOCK 32KHZ
CLKOUT
EXTAL
PHASE
COMPARATOR
LOW-PASS
FILTER
VCO
CRYSTAL
OSCILLATOR
SYSTEM
CLOCK
SYSTEM CLOCK CONTROL
XTAL
XFC PIN
VDDSYN
XFC
1
0.1
F
.01
F
0.1
F
FEEDBACK DIVIDER
22 pF
2
10M
330k
1. MUST BE LOW-LEAKAGE CAPACITOR (INSULATION RESISTANCE 30,000 M
OR GREATER).
2. RESISTANCE AND CAPACITANCE BASED ON A TEST CIRCUIT CONSTRUCTED WITH A DAISHINKU DMX-38 32.768-kHz CRYSTAL.
SPECIFIC COMPONENTS MUST BE BASED ON CRYSTAL TYPE. CONTACT CRYSTAL VENDOR FOR EXACT CIRCUIT.
W
X
Y
VSSI
22 pF
2
VSSI
VDDSYN
相關PDF資料 |
PDF描述 |
|---|---|
| MAH28151CXXXX | 1 CHANNEL(S), 64K bps, SERIAL COMM CONTROLLER, CDIP28 |
| MAQ28155CXXXX | 24 I/O, PIA-GENERAL PURPOSE, CDIP40 |
| M38037M6H-XXXHP | 8-BIT, MROM, 16.8 MHz, MICROCONTROLLER, PQFP64 |
| M30622M6P-XXXGP | 16-BIT, MROM, 24 MHz, MICROCONTROLLER, PQFP100 |
| M32170F6VWG | 32-BIT, FLASH, 40 MHz, RISC MICROCONTROLLER, PBGA255 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MC68332GMEH16 | 功能描述:32位微控制器 - MCU 32B MCU 2KRAM TPU QSM RoHS:否 制造商:Texas Instruments 核心:C28x 處理器系列:TMS320F28x 數據總線寬度:32 bit 最大時鐘頻率:90 MHz 程序存儲器大小:64 KB 數據 RAM 大小:26 KB 片上 ADC:Yes 工作電源電壓:2.97 V to 3.63 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:LQFP-80 安裝風格:SMD/SMT |
| MC68332GMEH20 | 功能描述:32位微控制器 - MCU 32B MCU 2KRAM TPU QSM RoHS:否 制造商:Texas Instruments 核心:C28x 處理器系列:TMS320F28x 數據總線寬度:32 bit 最大時鐘頻率:90 MHz 程序存儲器大小:64 KB 數據 RAM 大小:26 KB 片上 ADC:Yes 工作電源電壓:2.97 V to 3.63 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:LQFP-80 安裝風格:SMD/SMT |
| MC68332GMFC16 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:32-Bit Modular Microcontroller |
| MC68332GMFC20 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:32-Bit Modular Microcontroller |
| MC68332GMFV16 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:32-Bit Modular Microcontroller |
發(fā)布緊急采購，3分鐘左右您將得到回復。