參數(shù)資料
型號(hào)： SAX-XC878-16FFA3V3
廠商： INFINEON TECHNOLOGIES AG
元件分類： 微控制器/微處理器
英文描述： RISC MICROCONTROLLER, PQFP64
封裝： PLASTIC, TQFP-64
文件頁數(shù)： 120/139頁
文件大?。?/td> 4777K
代理商： SAX-XC878-16FFA3V3
XC878CLM
Functional Description
Advance Information
Data Sheet
74
V0.1, 2008-04
not be bypassed for this PLL mode. The PLL mode is used during normal system
operation.
(3.2)
System Frequency Selection
For the XC878, the value of NF, NR and OD can be selected by bits NDIV, PDIV and
KDIV respectively for different oscillator inputs inorder to obtain the required fsys. But the
combination of these factors must fulfill the following condition:
100 MHz < fVCO <175 MHz
800 KHz < fOSC / (2 * NR) < 8 MHz
Table 25 provides examples on how the typical system frequency of fsys = 144 MHz
and maximum frequency of 160 MHz (CPU clock = 26.67 MHz)can be obtained for the
different oscillator sources.
3.8.1
Recommended External Oscillator Circuits
The oscillator circuit, a Pierce oscillator, is designed to work with both, an external crystal
oscillator or an external stable clock source. It basically consists of an inverting amplifier
and a feedback element with XTAL1 as input, and XTAL2 as output.
When using a crystal, a proper external oscillator circuitry must be connected to both
pins, XTAL1 and XTAL2. The crystal frequency can be within the range of 2 MHz to
20 MHz. Additionally, it is necessary to have two load capacitances
C
X1 and CX2, and
depending on the crystal type, a series resistor
R
X2, to limit the current. A test resistor RQ
may be temporarily inserted to measure the oscillation allowance (negative resistance)
of the oscillator circuitry.
R
Q values are typically specified by the crystal vendor. The CX1
and
C
X2 values shown in Figure 20 can be used as starting points for the negative
resistance evaluation and for non-productive systems. The exact values and related
operating range are dependent on the crystal frequency and have to be determined and
Table 25
System frequency (
f
sys =144 MHz)
Oscillator
fosc
N
P
K
fsys
On-chip
4 MHz
72
2
1
144 MHz
4 MHz
80
2
1
160 MHz
External
8 MHz
72
4
1
144 MHz
6 MHz
72
3
1
144 MHz
4 MHz
72
2
1
144 MHz
OD
x
NR
NF
x
f
OSC
SYS =
相關(guān)PDF資料
PDF描述
SB80486DX2SC50 32-BIT, 50 MHz, RISC PROCESSOR, PQFP208
SB80486SXSC33 32-BIT, 33 MHz, MICROPROCESSOR, PQFP208
SB80C186EC-20 16-BIT, 20 MHz, MICROPROCESSOR, PQFP100
SB80C188EC-13 16-BIT, 13 MHz, MICROPROCESSOR, PQFP100
SB80C188EC-25 16-BIT, 25 MHz, MICROPROCESSOR, PQFP100
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SAX-XC878-16FFA5V 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit Single-Chip Microcontroller
SAX-XC878-16FFA5VAA 功能描述:8位微控制器 -MCU 8 BIT FLASH RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
SAX-XC878C-13FFA 5V AA 功能描述:IC MCU 8BIT FLASH 64-LQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:XC8xx 標(biāo)準(zhǔn)包裝:1,900 系列:XC8xx 核心處理器:XC800 芯體尺寸:8-位 速度:27MHz 連通性:CAN，SPI，SSI，UART/USART 外圍設(shè)備:欠壓檢測(cè)/復(fù)位，POR，PWM，WDT 輸入/輸出數(shù):40 程序存儲(chǔ)器容量:52KB（52K x 8） 程序存儲(chǔ)器類型:閃存 EEPROM 大小:- RAM 容量:3.25K 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 ~ 105°C 封裝/外殼:64-LQFP 包裝:帶卷 (TR)
SAX-XC878C-13FFA5VAA 功能描述:8位微控制器 -MCU 8 BIT FLASH RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
SAX-XC878C-16FFA 5V AA 功能描述:IC MCU 8BIT FLASH 64-LQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:XC8xx 標(biāo)準(zhǔn)包裝:1,900 系列:XC8xx 核心處理器:XC800 芯體尺寸:8-位 速度:27MHz 連通性:CAN，SPI，SSI，UART/USART 外圍設(shè)備:欠壓檢測(cè)/復(fù)位，POR，PWM，WDT 輸入/輸出數(shù):40 程序存儲(chǔ)器容量:52KB（52K x 8） 程序存儲(chǔ)器類型:閃存 EEPROM 大小:- RAM 容量:3.25K 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 ~ 105°C 封裝/外殼:64-LQFP 包裝:帶卷 (TR)
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