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STR720 Folha de dados(PDF) 234 Page - STMicroelectronics

Nome de Peças STR720
Descrição Electrónicos  ARM720T 16/32-BIT MCU WITH 16K RAM, USB, CAN, 3 TIMERS, ADC, 6 COMMUNICATIONS INTERFACES
PDF  401 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STR720 Folha de dados(HTML) 234 Page - STMicroelectronics

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STR720 - CONTROLLER AREA NETWORK (CAN)
234/401
New Data Registers 1 & 2 (CAN_NDnR)
Address Offset: 120h (CAN_ND1R), 124h (CAN_ND2R)
Reset Value: 0000 0000h
These registers hold the NewDat bits of the 32 Message Objects. By reading out the NewDat
bits, the CPU can check for which Message Object the data portion was updated. The
NewDat bit of a specific Message Object can be set/reset by the CPU through the IFn
Message Interface Registers or by the Message Handler after reception of a Data Frame or
after a successful transmission.
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
NewDat[32:17]
r
15
14
13
12
11
10
98
765
432
10
NewDat[16:1]
r
Bits 31:16
NewDat32-17 New Data Bits (of all Message Objects)
0: No new data has been written into the data portion of this Message
Object by the Message Handler since the last time this flag was cleared by
the application software.
1: The Message Handler or the application software has written new data
into the data portion of this Message Object.
Bits 15:0
NewDat16-1 New Data Bits (of all Message Objects)
0: No new data has been written into the data portion of this Message
Object by the Message Handler since the last time this flag was cleared by
the application software.
1: The Message Handler or the application software has written new data
into the data portion of this Message Object.
1



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