CR16MCS9VJE8 National Semiconductor, CR16MCS9VJE8 Datasheet - Page 107

• Manufacturer Part Number: CR16MCS9VJE8
• Description: 16-Bit Microcontroller IC
• Manufacturer: National Semiconductor

Specifications of CR16MCS9VJE8

• Controller Family/series: CR16X
• Core Size: 16 Bit
• Program Memory Size: 64K X 8 Flash
• Digital Ic Case Style: PQFP
• No. Of Pins: 80
• Mounting Type: Surface Mount
• Clock Frequency: 25MHz
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

PRI[3:0]
DLC[3:0]
ADDR
xxxE
xxxC
xxxA
xxx8
xxx6
xxx4
xxx2
xxx0
Number of data
16
16
16
16
16
16
16
16
bytes
0
1
2
3
4
5
6
BUFFER
register
CNTSTAT
DATA0
DATA1
DATA2
DATA3
TSTP
Transmit Priority Code. The PRI[3:0] bits con-
tain the user defined transmit priority code for
the message buffer.
Data Length Code. The DLC[3:0] bits deter-
mine the number of data bytes within a re-
ceived/transmitted frame. For transmission,
these bits need to be set according to the num-
ber of data bytes to be transmitted. For recep-
tion, these bits indicate the number of valid
received data bytes available in the message
buffer. Table27 shows the possible bit combi-
nations for DLC[3:0] for data lengths from 0 to
8 bytes.
Table 27 Data Length Coding
ID1
ID0
TSTP
DLC3
ID10
Data
Data
Data
Data
15
DLC3
1.7
3.7
5.7
7.7
15
0
0
0
0
0
0
0
TSTP
DLC2
Data
Data
Data
Data
14
ID9
1.6
3.6
5.6
7.6
14
DLC2
0
0
0
0
1
1
1
TSTP
DLC1
Data
Data
Data
Data
13
ID8
1.5
3.5
5.5
7.5
13
Table 28 Standard Frame with 8 Data Bytes
TSTP
DLC0
Data
Data
Data
Data
DLC1
12
ID7
1.4
3.4
5.4
7.4
12
0
0
1
1
0
0
1
TSTP
Data
Data
Data
Data
11
ID6
1.3
3.3
5.3
7.3
11
DLC0
0
1
0
1
0
1
0
TSTP
Data
Data
Data
Data
10
ID5
1.2
3.2
5.2
7.2
10
Reserved
TSTP
107
Data
Data
Data
Data
ID4
1.1
3.1
5.1
7.1
9
9
Note: The maximum number of data bytes received/trans-
mitted is 8, even if the data length code is set to a value
greater than 8. Thus, if the data length code is greater or
equal to eight bytes, the bits DLC2 to DLC0 are ignored.
20.9.4
During the processing of standard frames, the Extended-
Identifier-bit (IDE) is set to “0”. The bits ID1[3:0], ID0[15:0]
are “don’t care” bits. A standard frame with eight data bytes
is shown in Table28.
IDE
RTR
ID[10:0]The ID buffer bits ID10 to ID0 are used for the 11
standard frame identifier bits.
TSTP
Number of data
Data
Data
Data
Data
ID3
1.0
3.0
5.0
7.0
8
8
don’t care
bytes
TSTP
Storage of Standard Messages
Data
Data
Data
Data
PRI3
ID2
2.7
4.7
6.7
8.7
7
7
8
7
Table 27 Data Length Coding
Identifier Extension. IDE is set to “0” to indicate
that the message is a standard frame using 11
identifier bits. If IDE is set to “1”, the message
stored in the buffer is handled as an extended
frame.
Remote Transmission Request. RTR is set to
“1” to indicate that the message is a remote
frame. For a data frame, the RTR bit is set to
“0”.
TSTP
Data
Data
Data
Data
PRI2
ID1
2.6
4.6
6.6
8.6
6
6
TSTP
Data
Data
Data
Data
PRI1
ID0
2.5
4.5
6.5
8.5
5
DLC3
5
0
1
TSTP
RTR
Data
Data
Data
Data
PRI0
2.4
4.4
6.4
8.4
4
4
DLC2
TSTP
1
0
Data
Data
Data
Data
ST3
IDE
2.3
4.3
6.3
8.3
3
3
TSTP
Data
Data
Data
Data
ST2
2.2
4.2
6.2
8.2
DLC1
2
2
www.national.com
1
0
don’t care
TSTP
Data
Data
Data
Data
ST1
2.1
4.1
6.1
8.1
1
1
DLC0
1
0
TSTP
Data
Data
Data
Data
ST0
2.0
4.0
6.0
8.0
0
0