UPD78F1502AGK-GAK-AX Datasheet, PDF (561/1031 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcontrollers

78K0R/Lx3
CHAPTER 14 SERIAL ARRAY UNIT
Figure 14-85 shows the configuration of a port that manipulates reception of LIN.
The wakeup signal transmitted from the master of LIN is received by detecting an edge of an external interrupt (INTP0).
The length of the sync field transmitted from the master can be measured by using the external event capture operation of
the timer array unit (TAU) to calculate a baud-rate error.
By controlling switch of port input (ISC0/ISC1), the input source of port input (RxD3) for reception can be input to the
external interrupt pin (INTP0) and timer array unit (TAU).
Figure 14-85. Port Configuration for Manipulating Reception of LIN
P50/RxD3
Selector
RXD3 input
Port mode
(PM50)
Output latch
(P50)
P120/INTP0
Selector
Selector
INTP0 input
Port mode
(PM120)
Output latch
(P120)
P33/TI07
Selector
Port input
switch control
(ISC0)
<ISC0>
0: Selects INTP0 (P120)
1: Selects RxD3 (P50)
Selector
Channel 7 input of TAU
Port mode
(PM33)
Output latch
(P33)
Port input
switch control
(ISC1)
<ISC1>
0: Selects TI07 (P33)
1: Selects RxD3 (P50)
Remark ISC0, ISC1: Bits 0 and 1 of the input switch control register (ISC) (See Figure 14-17.)
R01UH0004EJ0501 Rev.5.01
545
Jun 20, 2011