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L9803 Fiches technique(PDF) 87 Page - STMicroelectronics

No de pièce L9803
Description  Super smart power motor driver with 8-Bit MCU, RAM, EEPROM, ADC, WDG, Timers, PWM and H-bridge driver
PDF  126 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9803 Fiches technique(HTML) 87 Page - STMicroelectronics

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L9803
On-Chip Peripherals
87/126
Read/Write
Reset Value: Undefined
ID[10:3] are the most significant 8 bits of the 11-bit message identifier.The identifier acts as
the message’s name, used for bus access arbitration and acceptance filtering.
IDENTIFIER LOW REGISTERS (IDLRx)
Read/Write
Reset Value: Undefined
ID[2:0] are the least significant 3 bits of the 11-bit message identifier.
RTR is the Remote Transmission Request bit. It is set to indicate a remote frame and reset
to indicate a data frame.
DLC[3:0] is the Data Length Code. It gives the number of bytes in the data field of the
message.The valid range is 0 to 8.
DATA REGISTERS (DATA0-7x)
Read/Write
Reset Value: Undefined
DATA[7:0] is a message data byte. Up to eight such bytes may be part of a message.
Writing to byte DATA7 initiates a transmit request and should always be done even when
DATA7 is not part of the message.
BUFFER CONTROL/STATUS REGs. (BCSRx)
Read/Write
Reset Value: 00h
Bit 3 = ACC Acceptance Code
− Read Only
Set by hardware with the id of the highest priority filter which accepted the message stored
in the buffer.
7
0
ID10
ID9
ID8
ID7
ID6
ID5
ID4
ID3
7
0
ID2
ID1
ID0
RTR
DLC3
DLC2
DLC1
DLC0
7
0
DATA7
DATA6
DATA5
DATA4
DATA3
DATA2
DATA1
DATA0
7
0
0
000
ACC
RDY
BUSY
LOCK



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