UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 449

• Manufacturer Part Number: UPD78F0890GK(A)-GAJ-AX
• Description: 8BIT MCU, 128K FLASH, 7K RAM, LQFP
• Manufacturer: NEC

Specifications of UPD78F0890GK(A)-GAJ-AX

• Controller Family/series: UPD78F
• No. Of I/o's: 55
• Ram Memory Size: 7KB
• Cpu Speed: 20MHz
• No. Of Timers: 10
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 128KB
• Oscillator Type: External, Internal

(20) CAN message data length register m (C0MDLCm)
The C0MDLCm register is used to set the number of bytes of the data field of a message buffer.
After reset: 0000xxxxB
MDLC3
Note The data and DLC value actually transmitted to CAN bus are as follows.
Cautions 1. Be sure to set bits 7 to 4 0000B.
C0MDLCm
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
Data frame
Remote frame
MDLC2
2. Receive data is stored in as many C0MDATAx as the number of bytes
Type of Transmit Frame
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
(however, the upper limit is 8) corresponding to DLC of the received frame.
C0MDATAx in which no data is stored is undefined.
MDLC1
7
0
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
R/W
MDLC0
6
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
CHAPTER 16 CAN CONTROLLER
Address: See Table 16-16
Number of bytes specified by DLC
(However, 8 bytes if DLC ≥ 8)
0 bytes
User’s Manual U17554EJ4V0UD
5
0
0 bytes
1 byte
2 bytes
3 bytes
4 bytes
5 bytes
6 bytes
7 bytes
8 bytes
Setting prohibited
(If these bits are set during transmission, 8-byte data is transmitted
regardless of the set DLC value when a data frame is transmitted.
However, the DLC actually transmitted to the CAN bus is the DLC
value set to this register.)
Length of Transmit Data
4
0
Data Length Of Transmit/Receive Message
MDLC3
3
Note
MDLC2
2
MDLC1
MDLC[3:0]
1
DLC Transmitted
MDLC0
0
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