hd64338023s Renesas Electronics Corporation., hd64338023s Datasheet - Page 401

• Manufacturer Part Number: hd64338023s
• Description: Renesas 8-bit Single-chip Microcomputer Super Low Power Series
• Manufacturer: Renesas Electronics Corporation.

RXD
TXD
TXD
32
32
pin
pin
32
pin
TDR (next transmit data)
TSR (transmission in progress)
TDRE = 0
RDR
RSR (reception in progress)
RDRF = 0
TDR
TSR (transmission in progress)
TEND = 0
Figure 10.2(a) RDRF Setting and RXI Interrupt
Figure 10.2(b) TDRE Setting and TXI Interrupt
Figure 10.2(c) TEND Setting and TEI Interrupt
RXD
TXD
32
32
TXD
pin
pin
Section 10 Serial Communication Interface
32
Rev. 7.00 Mar 10, 2005 page 359 of 652
pin
TSR (transmission completed, transfer)
TDRE ← 1
(TXI request when TIE = 1)
TDR
RDR
RSR↑ (reception completed, transfer)
RDRF ← 1
(RXI request when RIE = 1)
↓
TDR
TSR (reception completed)
TEND ← 1
(TEI request when TEIE = 1)
REJ09B0042-0700