參數(shù)資料
型號: P80C591
廠商: NXP Semiconductors N.V.
英文描述: Single-chip 8-bit microcontroller with CAN controller
中文描述: 單芯片8 - CAN控制器位微控制器
文件頁數(shù): 58/161頁
文件大小: 588K
代理商: P80C591
1999 Aug 19
58
Philips Semiconductors
Objective Specification
Single-chip 8-bit microcontroller with CAN controller
P8xC591
12.5.18.3 Data Length Code (DLC)
The number of bytes in the Data Field of a message is
coded by the Data Length Code. At the start of a Remote
Frame transmission the Data Length Code is not
considered due to the RTR bit being ‘1’ (remote). This
forces the number of transmitted/received data bytes to be
0. Nevertheless, the Data Length Code must be specified
correctly to avoid bus errors, if two CAN Controllers start a
Remote Frame transmission with the same identifier
simultaneously.
The range of the Data Byte Count is 0 to 8 bytes and is
coded as follows:
`
For reasons of compatibility no Data Length Code > 8
should be used. If a value greater than 8 is selected, 8
bytes are transmitted in the data frame with the Data
Length Code specified in DLC.
12.5.18.4 Identifier (ID)
In Standard Frame Format (SFF) the Identifier consists of
11 bits (ID.28 to ID.18) and in Extended Frame Format
(EFF) messages the identifier consists of 29 bits (ID.28 to
ID.0). ID.28 is the most significant bit, which is transmitted
first on the bus during the arbitration process. The
Identifier acts as the message’s name, used in a receiver
for acceptance filtering, and also determines the bus
access priority during the arbitration process. The lower
the binary value of the Identifier the higher the priority. This
is due to the larger number of leading dominant bits during
arbitration.
12.5.18.5 Data Field
The number of transferred data bytes is defined by the
Data Length Code. The first bit transmitted is the most
significant bit of data byte 1 at address 115 (SFF) or
address 117 (EFF).
DataByteCount
8
DLC.3
4
DLC.2
2
DLC.1
DLC.0
+
×
+
×
+
×
=
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P80C592FFA/00,512 功能描述:8位微控制器 -MCU 80C51 W/CAN 16MHZ ROMLESS RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT