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| 型号： | MCP25025-I/P |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | SPECIALTY MICROPROCESSOR CIRCUIT, PDIP14 |
| 封装： | 0.300 INCH, PLASTIC, DIP-14 |
| 文件页数： | 21/64页 |
| 文件大小： | 1232K |
| 代理商： | MCP25025-I/P |
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MCP2502X/5X
DS21664C-page 28
2003 Microchip Technology Inc.
If
the
Error
Condition
message
is
enabled
(OPTREG2.TXONE = 1) and one of the above
conditions occur, the MCP2502X/5X sends TXID1
identifier with output message Read CAN Error States
data field (three data bytes).
4.5.4
SCHEDULED TRANSMISSIONS
The MCP2502X/5X has the capability of sending
scheduled transmissions (On Bus message), if
enabled.
The scheduled transmission control register (STCON)
enables and configures the occurrence of the
scheduled message. Setting the STEN bit in the
STCON register enables the scheduled message. The
STBF1:STBF0 and STM3:STM0 bits allow a scheduled
transmission to be initiated from a minimum of 256 s
to a maximum of 16.8 seconds (using a 16 MHz FOSC)
and the following equation:
Message Type - The message sent for scheduled
transmissions consists of either TXID0 with zero data
bytes or TXID0 with eight data bytes containing the
Read A/D Regs message, depending on STMS bit in
the STCON register.
REGISTER 4-1:
STCON - SCHEDULED TRANSMISSION CONTROL REGISTER
Note:
The
actual
scheduled
transmission
intervals may vary slightly due to the
internal event que of the control module.
Scheduled Transmission
= STBF1:STBF0(STM3:STM0)
R/W-0
R/W-1
STEN
STMS
STBF1
STBF0
STM3
STM2
STM1
STM0
bit 7
bit 0
bit 7
STEN: Scheduled Transmission Enable bits
1
= Enabled
0
=Disabled
bit 6
STMS: Scheduled Transmission Message Select
1
= Sends Transmit ID 0 (TXID0) with the “Read A/D Regs” data (DLC = 8)
0
= Sends Transmit ID 0 (TXID0) with no data (DLC = 0)
bit 5-4
STBF1:STBF0: Base Transmission Frequency bits
00
= 4096TOSC
01
= 16(4096TOSC)
10
= 256(4096TOSC)
10
= 4096(4096TOSC)
(e.g., STBF1:STBF0 => 00 => 256 s for a 16 MHz FOSC)
bit 3-0
STM3:STM0: Scheduled Transmission Multiplier bits
0000
= 1
0001
= 2
-
1110
= 15
1111
= 16
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
- n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
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相关代理商/技术参数 |
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|---|---|
| MCP25025-ISL | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:CAN I/O Expander Family |
| MCP25025T | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:CAN I/O Expander Family |
| MCP25025TE/P | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:CAN I/O Expander Family |
| MCP25025TE/SL | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:CAN I/O Expander Family |
| MCP25025TI/P | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:CAN I/O Expander Family |
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