UPD78F0537DGA(T)-9EV-A NEC, UPD78F0537DGA(T)-9EV-A Datasheet - Page 356

• Manufacturer Part Number: UPD78F0537DGA(T)-9EV-A
• Description: 8BIT MCU, 128K FLASH, 7KB RAM, SMD
• Manufacturer: NEC

Specifications of UPD78F0537DGA(T)-9EV-A

• Controller Family/series: UPD78
• No. Of I/o's: 55
• Ram Memory Size: 7KB
• Cpu Speed: 20MHz
• No. Of Timers: 8
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 128KB
• Oscillator Type: External, Internal

356
INTST6
Remark LIN stands for Local Interconnect Network and is a low-speed (1 to 20 kbps) serial communication
Notes 1.
Remark The interval between each field is controlled by software.
Figures 15-1 and 15-2 outline the transmission and reception operations of LIN.
LIN Bus
(output)
Note 3
TX6
2.
3.
protocol intended to aid the cost reduction of an automotive network.
LIN communication is single-master communication, and up to 15 slaves can be connected to one
master.
The LIN slaves are used to control the switches, actuators, and sensors, and these are connected to the
LIN master via the LIN network.
Normally, the LIN master is connected to a network such as CAN (Controller Area Network).
In addition, the LIN bus uses a single-wire method and is connected to the nodes via a transceiver that
complies with ISO9141.
In the LIN protocol, the master transmits a frame with baud rate information and the slave receives it and
corrects the baud rate error. Therefore, communication is possible when the baud rate error in the slave
is ±15% or less.
The wakeup signal frame is substituted by 80H transmission in the 8-bit mode.
The sync break field is output by hardware. The output width is the bit length set by bits 4 to 2 (SBL62
to SBL60) of asynchronous serial interface control register 6 (ASICL6) (see 15.4.2 (2) (h)
transmission).
INTST6 is output on completion of each transmission. It is also output when SBF is transmitted.
signal frame
8 bits
Wakeup
Note 1
Figure 15-1. LIN Transmission Operation
CHAPTER 15 SERIAL INTERFACE UART6
13-bit
transmission
break field
Sync
Note 2
User’s Manual U17260EJ6V0UD
SBF
transmission
Sync field
55H
transmission
Identifier
Data
field
transmission
Data field
Data
transmission
Data field Checksum
Data
transmission
field
Data
SBF