UPD78F0138 NEC, UPD78F0138 Datasheet - Page 296

• Manufacturer Part Number: UPD78F0138
• Description: (UPD78xxxx) 8-Bit Single-Chip Microcontrollers
• Manufacturer: NEC

296
Remark ISC0, ISC1: Bits 0 and 1 of the input switch control register (ISC) (see Figure 14-11)
The peripheral functions used in the LIN communication operation are shown below.
<Peripheral functions used>
• External interrupt (INTP0); wakeup signal detection
• 16-bit timer/event counter 00 (TI000); baud rate error detection
• Serial interface UART6
Use: Detects the wakeup signal edges and detects start of communication.
Use: Detects the baud rate error (measures the TI000 input edge interval in the capture mode) by detecting the
synchronous break field (SBF) length and divides it by the number of bits.
P120/INTP0
P00/TI000
P14/RxD6
Figure 14-3. Port Configuration for LIN Reception Operation
Output latch
Output latch
Output latch
(P120)
(P14)
(P00)
CHAPTER 14 SERIAL INTERFACE UART6
Port mode
Port mode
Port mode
(PM120)
Selector
Selector
Selector
(PM14)
(PM00)
User’s Manual U16228EJ2V0UD
<ISC0>
0: Select INTP0 (P120)
1: Select RxD6 (P14)
<ISC1>
0: Select TI000 (P00)
1: Select RxD6 (P14)
switch control
switch control
Port input
Port input
Selector
Selector
(ISC0)
(ISC1)
RXD6 input
INTP0 input
TI000 input