参数资料
型号: SAF-XC866-2FRA3V
厂商: INFINEON TECHNOLOGIES AG
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 26.7 MHz, MICROCONTROLLER, PDSO38
封装: PLASTIC, GREEN, TSSOP-38
文件页数: 75/116页
文件大小: 1640K
代理商: SAF-XC866-2FRA3V
XC866
Functional Description
Data Sheet
57
V1.2, 2007-10
3.8
Clock Generation Unit
The Clock Generation Unit (CGU) allows great flexibility in the clock generation for the
XC866. The power consumption is indirectly proportional to the frequency, whereas the
performance of the microcontroller is directly proportional to the frequency. During user
program execution, the frequency can be programmed for an optimal ratio between
performance and power consumption. Therefore the power consumption can be
adapted to the actual application state.
Features:
Phase-Locked Loop (PLL) for multiplying clock source by different factors
PLL Base Mode
Prescaler Mode
PLL Mode
Power-down mode support
The CGU consists of an oscillator circuit and a PLL.In the XC866, the oscillator can be
from either of these two sources: the on-chip oscillator (10 MHz) or the external oscillator
(4 MHz to 12 MHz). The term “oscillator” is used to refer to both on-chip oscillator and
external oscillator, unless otherwise stated. After the reset, the on-chip oscillator will be
used by default.The external oscillator can be selected via software. In addition, the PLL
provides a fail-safe logic to perform oscillator run and loss-of-lock detection. This allows
emergency routines to be executed for system recovery or to perform system shut down.
Figure 23
CGU Block Diagram
PLL
core
lock
detect
N:1
P:1
fvco
fn
fp
osc fail
detect
OSC
fosc
K:1
fsys
NDIV
OSCR
LOCK
VCOBYP
1
0
OSCDISC
相关PDF资料
PDF描述
SAF-XC866-2FRA 8-BIT, FLASH, 26.7 MHz, MICROCONTROLLER, PDSO38
SAF-XC866-2RRI 8-BIT, FLASH, 26.7 MHz, MICROCONTROLLER, PDSO38
SAF-XC866-4FRA3V 8-BIT, FLASH, 26.7 MHz, MICROCONTROLLER, PDSO38
SAF-XC866-4FRA 8-BIT, FLASH, 26.7 MHz, MICROCONTROLLER, PDSO38
SAK-XC866-2FRI3V 8-BIT, FLASH, 26.7 MHz, MICROCONTROLLER, PDSO38
相关代理商/技术参数
参数描述
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SAF-XC866-2FRI BC 功能描述:8位微控制器 -MCU 8-Bit Single-Chip 3.3V 26.67MHz Flash RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
SAF-XC866-2FRI BE 功能描述:8位微控制器 -MCU ICMCU 8BIT XC800CISC 8KB FLASH 26.7MHZ 5V RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
SAFXC8662FRIBCXT 制造商:Infineon Technologies AG 功能描述:MCU 8-bit XC800 8051 CISC 4KB Flash 2.5V/5V 38-Pin TSSOP
SAF-XC866-2RRA AB 功能描述:8位微控制器 -MCU 8-Bit Single-Chip Microcontroller RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT