Datasheet

Section 10 Serial Communication Interface
Rev. 6.00 Aug 04, 2006 page 378 of 680
REJ09B0145-0600
RDR
RSR (reception in progress)
RDRF = 0
RXD
3x
pin
RDR
RSR↑ (reception completed, transfer)
RDRF ← 1
(RXI request when RIE = 1)
RXD
3x
pin
Figure 10.7 (a) RDRF Setting and RXI Interrupt
TDR (next transmit data)
TSR (transmission in progress)
TDRE = 0
TXD
3x
pin
TDR
TSR↓ (transmission completed, transfer)
TDRE ← 1
(TXI request when TIE = 1)
TXD
3x
pin
Figure 10.7 (b) TDRE Setting and TXI Interrupt
TDR
TSR (transmission in progress)
TEND = 0
TXD
3x
pin
TDR
TSR (reception completed)
TEND ← 1
(TEI request when TEIE = 1)
TXD
3x
pin
Figure 10.7 (c) TEND Setting and TEI Interrupt