参数资料
型号: PIC18F2480-E/SP
厂商: Microchip Technology
文件页数: 17/88页
文件大小: 0K
描述: IC PIC MCU FLASH 8KX16 28DIP
产品培训模块: Asynchronous Stimulus
PIC18 J Series MCU Overview
标准包装: 15
系列: PIC® 18F
核心处理器: PIC
芯体尺寸: 8-位
速度: 25MHz
连通性: CAN,I²C,SPI,UART/USART
外围设备: 欠压检测/复位,HLVD,POR,PWM,WDT
输入/输出数: 25
程序存储器容量: 16KB(8K x 16)
程序存储器类型: 闪存
EEPROM 大小: 256 x 8
RAM 容量: 768 x 8
电压 - 电源 (Vcc/Vdd): 4.2 V ~ 5.5 V
数据转换器: A/D 8x10b
振荡器型: 内部
工作温度: -40°C ~ 125°C
封装/外壳: 28-DIP(0.300",7.62mm)
包装: 管件
配用: DVA18XP280-ND - DEVICE ADAPTER 18F2220 PDIP 28LD
MCP2515
DS21801F-page 24
2010 Microchip Technology Inc.
4.3
Start-of-Frame Signal
If enabled, the Start-Of-Frame signal is generated on
the SOF pin at the beginning of each CAN message
detected on the RXCAN pin.
The RXCAN pin monitors an idle bus for a recessive-
to-dominant edge. If the dominant condition remains
until the sample point, the DSTEMP interprets this as a
SOF and a SOF pulse is generated. If the dominant
condition does not remain until the sample point, the
DSTEMP interprets this as a glitch on the bus and no
SOF signal is generated. Figure 4-1 illustrates SOF
signalling and glitch-filtering.
As with One-shot mode, one use for SOF signaling is
for TTCAN-type systems. In addition, by monitoring
both the RXCAN pin and the SOF pin, an MCU can
detect early physical bus problems by detecting small
glitches before they affect the CAN communications.
4.4
RX0BF and RX1BF Pins
In addition to the INT pin, which provides an interrupt
signal to the MCU for many different conditions, the
receive buffer full pins (RX0BF and RX1BF) can be
used to indicate that a valid message has been loaded
into RXB0 or RXB1, respectively. The pins have three
different configurations (Register 4-1):
1.
Disabled
2.
Buffer Full Interrupt
3.
Digital Output
4.4.1
DISABLED
The RXBnBF pins can be disabled to the high-
impedance state by clearing BFPCTRL.BnBFE.
4.4.2
CONFIGURED AS BUFFER FULL
The RXBnBF pins can be configured to act as either
buffer full interrupt pins or as standard digital outputs.
Configuration and status of these pins is available via
the BFPCTRL register (Register 4-3). When set to
operate in Interrupt mode (by setting BFPCTRL.BxBFE
and BFPCTRL.BxBFM bits), these pins are active-low
and are mapped to the CANINTF.RXnIF bit for each
receive buffer. When this bit goes high for one of the
receive buffers (indicating that a valid message has
been loaded into the buffer), the corresponding
RXBnBF pin will go low. When the CANINTF.RXnIF bit
is cleared by the MCU, the corresponding interrupt pin
will go to the logic-high state until the next message is
loaded into the receive buffer.
FIGURE 4-1:
START-OF-FRAME SIGNALING
START-OF-FRAME BIT
Sample
Point
ID BIT
RXCAN
SOF
EXPECTED START-OF-FRAME BIT
Sample
Point
BUS IDLE
RXCAN
SOF
Expected
Normal SOF Signaling
Glitch-Filtering
相关PDF资料
PDF描述
V375A36E600B3 CONVERTER MOD DC/DC 36V 600W
VE-JWH-IX-F1 CONVERTER MOD DC/DC 52V 75W
PIC18F4610-I/ML IC MCU FLASH 32KX16 44QFN
V375A36E600B2 CONVERTER MOD DC/DC 36V 600W
VE-JWF-IX-F4 CONVERTER MOD DC/DC 72V 75W
相关代理商/技术参数
参数描述
PIC18F2480-I/ML 功能描述:8位微控制器 -MCU 16 KB 768 RAM 25 I/O 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
PIC18F2480-I/SO 功能描述:8位微控制器 -MCU 16 KB 768 RAM 25 I/O 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
PIC18F2480-I/SP 功能描述:8位微控制器 -MCU 16 KB 768 RAM 25 I/O 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
PIC18F2480T-I/ML 功能描述:8位微控制器 -MCU 16 KB 768 RAM 25 I/O 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
PIC18F2480T-I/SO 功能描述:8位微控制器 -MCU 16 KB 768 RAM 25 I/O 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