参数资料
型号: C8051F300-GM
厂商: Silicon Laboratories Inc
文件页数: 71/178页
文件大小: 0K
描述: IC 8051 MCU 8K FLASH 11QFN
产品培训模块: Serial Communication Overview
标准包装: 122
系列: C8051F30x
核心处理器: 8051
芯体尺寸: 8-位
速度: 25MHz
连通性: SMBus(2 线/I²C),UART/USART
外围设备: POR,PWM,温度传感器,WDT
输入/输出数: 8
程序存储器容量: 8KB(8K x 8)
程序存储器类型: 闪存
RAM 容量: 256 x 8
电压 - 电源 (Vcc/Vdd): 2.7 V ~ 3.6 V
数据转换器: A/D 8x8b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 10-VFDFN 裸露焊盘
包装: 管件
产品目录页面: 623 (CN2011-ZH PDF)
配用: 336-1444-ND - ADAPTER PROGRAM TOOLSTICK F300
336-1351-ND - KIT REF DES TEMP COMPENS RTC
336-1348-ND - KIT STARTER TOOLSTICK
336-1283-ND - KIT REF DESIGN DTMF DECODER
336-1278-ND - KIT TOOL EVAL SYS IN A USB STICK
336-1246-ND - DEV KIT F300/301/302/303/304/305
其它名称: 336-1245
C8051F300/1/2/3/4/5
162
Rev. 2.9
16.2.5. 8-Bit Pulse Width Modulator Mode
Each module can be used independently to generate a pulse width modulated (PWM) output on its associ-
ated CEXn pin. The frequency of the output is dependent on the timebase for the PCA counter/timer. The
duty cycle of the PWM output signal is varied using the module's PCA0CPLn capture/compare register.
When the value in the low byte of the PCA counter/timer (PCA0L) is equal to the value in PCA0CPLn, the
output on the CEXn pin will be set to ‘1’. When the count value in PCA0L overflows, the CEXn output will
be set to ‘0’ (see Figure 16.8). Also, when the counter/timer low byte (PCA0L) overflows from 0xFF to
0x00, PCA0CPLn is reloaded automatically with the value stored in the module’s capture/compare high
byte (PCA0CPHn) without software intervention. Setting the ECOMn and PWMn bits in the PCA0CPMn
register enables 8-bit Pulse Width Modulator mode. The duty cycle for 8-bit PWM Mode is given by
Equation 16.2.
Important Note About Capture/Compare Registers: When writing a 16-bit value to the PCA0 Capture/
Compare registers, the low byte should always be written first. Writing to PCA0CPLn clears the ECOMn bit
to ‘0’; writing to PCA0CPHn sets ECOMn to ‘1’.
Equation 16.2. 8-Bit PWM Duty Cycle
Using Equation 16.2, the largest duty cycle is 100% (PCA0CPHn = 0), and the smallest duty cycle is
0.39% (PCA0CPHn = 0xFF). A 0% duty cycle may be generated by clearing the ECOMn bit to ‘0’.
Figure 16.8. PCA 8-Bit PWM Mode Diagram
DutyCycle
256
PCA0CPHn
256
---------------------------------------------------
=
8-bit
Comparator
PCA0L
PCA0CPLn
PCA0CPHn
CEXn
Crossbar
Port I/O
Enable
Overflow
PCA Timebase
00 x 0
x
Q
SET
CLR
S
R
match
PCA0CPMn
P
W
M
1
6
n
E
C
O
M
n
E
C
F
n
T
O
G
n
P
W
M
n
C
A
P
n
C
A
P
N
n
M
A
T
n
0
ENB
0
1
Write to
PCA0CPLn
Write to
PCA0CPHn
Reset
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C8051F300-GMR 功能描述:8位微控制器 -MCU 8KB 8ADC 11P MCU 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
C8051F300-GS 功能描述:8位微控制器 -MCU 8KB Flash, 8-bit ADC 2%osc 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
C8051F300-GSR 功能描述:8位微控制器 -MCU 8KB 8ADC 2%osc MCU 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
C8051F300P 功能描述:8位微控制器 -MCU PROTO TYPE VERSION IN 14P DIP PACKAGE 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
C8051F300R 功能描述:8位微控制器 -MCU 8 ADC calOSC 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