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参数资料
| 型号： | MCP2515DM-PTPLS |
| 厂商： | Microchip Technology |
| 文件页数： | 66/92页 |
| 文件大小： | 0K |
| 描述： | BOARD DAUGHTER PICTAIL MCP2515 |
| 标准包装： | 1 |
| 系列： | * |
| 主要目的： | 接口，CAN 控制器 |
| 嵌入式： | 是，MCU，8 位 |
| 已用 IC / 零件： | MCP2515，MCP2551 |
| 主要属性： | 置于 PICtail Plus 子板内的 CAN 控制器和 CAN 收发器 |
| 已供物品： | 板，CD |
| 产品目录页面： | 685 (CN2011-ZH PDF) |
| 相关产品： | MCP2515T-I/ST-ND - IC CAN CONTROLLER W/SPI 20TSSOP MCP2515T-I/SO-ND - IC CAN CONTROLLER W/SPI 18SOIC MCP2515T-E/ST-ND - IC CAN CONTROLLER W/SPI 20TSSOP MCP2515T-E/SO-ND - IC CAN CONTROLLER W/SPI 18SOIC MCP2515-E/ST-ND - IC CAN CONTROLLER W/SPI 20TSSOP MCP2515-E/SO-ND - IC CAN CONTROLLER W/SPI 18SOIC MCP2515-E/P-ND - IC CAN CONTROLLER W/SPI 18DIP MCP2515-I/ST-ND - IC CAN CONTROLLER W/SPI 20TSSOP MCP2515-I/SO-ND - IC CAN CONTROLLER W/SPI 18SOIC MCP2515-I/P-ND - IC CAN CONTROLLER W/SPI 18DIP 更多... |
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MCP2515
Each status bit returned in this command may also be
read by using the standard Read command with the
appropriate register address.
The part is selected by lowering the CS pin and the Bit
Modify command byte is then sent to the MCP2515.
The command is followed by the address of the
register, the mask byte and finally the data byte.
12.9
RX STATUS Instruction
The mask byte determines which bits in the register will
The RX STATUS instruction ( Figure 12-9 ) is used to
quickly determine which filter matched the message
and message type (standard, extended, remote). After
the command byte is sent, the controller will return
8 bits of data that contain the status data. If more clocks
are sent after the eight bits are transmitted, the
be allowed to change. A ‘ 1 ’ in the mask byte will allow
a bit in the register to change, while a ‘ 0 ’ will not.
The data byte determines what value the modified bits
in the register will be changed to. A ‘ 1 ’ in the data byte
will set the bit and a ‘ 0 ’ will clear the bit, provided that
the mask for that bit is set to a ‘ 1 ’ (see Figure 12-7 ).
controller will continue to output the same status bits as
long as the CS pin stays low and clocks are provided.
12.10 BIT MODIFY Instruction
The BIT MODIFY instruction provides a means for set-
ting or clearing individual bits in specific status and con-
trol registers. This command is not available for all
registers. See Section 11.0 “Register Map” to
determine which registers allow the use of this
command.
FIGURE 12-1:
Mask byte
Data byte
Previous
Register
Contents
BIT MODIFY
0 0 1 1 0 1 0 1
X X 1 0 X 0 X 1
0 1 0 1 0 0 0 1
Note:
Executing the Bit Modify command on
registers that are not bit-modifiable will
force the mask to FFh. This will allow byte-
Resulting
Register
Contents
0 1 1 0 0 0 0 1
writes to the registers, not bit modify.
TABLE 12-1:
SPI INSTRUCTION SET
Instruction Name
RESET
READ
READ RX BUFFER
WRITE
LOAD TX BUFFER
RTS
(Message
Request-To-Send)
READ STATUS
RX STATUS
BIT MODIFY
DS21801G-page 66
Instruction Format
1100 0000
0000 0011
1001 0nm0
0000 0010
0100 0abc
1000 0nnn
1010 0000
1011 0000
0000 0101
Description
Resets internal registers to default state, set Configuration mode.
Read data from register beginning at selected address.
When reading a receive buffer, reduces the overhead of a normal
Read command by placing the Address Pointer at one of four
locations, as indicated by ‘n,m’. Note: The associated RX flag bit
(CANINTF.RXnIF) will be cleared after bringing CS high.
Write data to register beginning at selected address.
When loading a transmit buffer, reduces the overhead of a normal
Write command by placing the Address Pointer at one of six
locations as indicated by ‘a,b,c’.
Instructs controller to begin message transmission sequence for
any of the transmit buffers.
1000 0nnn
Request-to-send for TXBO
Request-to-send for TXB2
Request-to-send for TXB1
Quick polling command that reads several status bits for transmit
and receive functions.
Quick polling command that indicates filter match and message
type (standard, extended and/or remote) of received message.
Allows the user to set or clear individual bits in a particular
register. Note: Not all registers can be bit-modified with this
command. Executing this command on registers that are not bit-
modifiable will force the mask to FFh. See the register map in
? 2003-2012 Microchip Technology Inc.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MCP2515-E | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Stand-Alone CAN Controller with SPI Interface |
| MCP2515-E/ML | 制造商:Microchip Technology Inc 功能描述: |
| MCP2515-E/P | 功能描述:网络控制器与处理器 IC W/ SPI Inter 125dC RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| MCP2515-E/SO | 功能描述:网络控制器与处理器 IC W/ SPI Inter 125dC RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| MCP2515-E/SORB4 | 制造商:Microchip Technology Inc 功能描述: |
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