UPD784026 Renesas Electronics Corporation., UPD784026 Datasheet - Page 441

• Manufacturer Part Number: UPD784026
• Description: 16/8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

3-wire serial I/O (IOE) mode can be selected.
UART/IOE1 will be described as representative of both UART/IOEs. When used as UART2/IOE2, the UART/IOE1 register
names, bit names and pin names should be read as their UART2/IOE2 equivalents as shown in Table 16-1.
Pin names
Asynchronous serial interface mode register
Asynchronous serial interface mode register bit names
Asynchronous serial interface status register
Asynchronous serial interface status register bit names
Clocked serial interface mode register
Clocked serial interface mode register bit names
Baud rate generator control register
Baud rate generator control register bit names
Interrupt request names
Interrupt control registers and bit names used in this
chapter
The PD784026 incorporates two serial interface channels for which asynchronous serial interface (UART) mode or
The two UART/IOE channels have completely identical functions. In this chapter, therefore, unless stated otherwise,
CHAPTER 16 ASYNCHRONOUS SERIAL INTERFACE/3-WIRE SERIAL I/O
Table 16-1 Differences Between UART/IOE1 and UART2/IOE2 Names
Item
P25/ASCK/SCK1, P30/RxD/SI1,
P31/TxD/SO2
ASIM
TXE, RXE, PS1, PS0, CL, SL,
ISRM, SCK
ASIS
PE, FE, OVE
CSIM1
CTXE1, CRXE1, DIR1, CSCK1
BRGC
TPS0-TPS3, MDL0-MDL3
INTSR/ITCSI1, INTSER, INTST
SRIC, CSIIC1, SERIC, STIC,
SRIF, CSIIF1, SERIF, STIF
UART/IOE1
P12/ASCK2/SCK2, P13/RxD2/SI2,
P14/TxD2/SO2
ASIM2
TXE2, RXE2, PS21, PS20, CL2,
SL2, ISRM2, SCK2
ASIS2
PE2, FE2, OVE2
CSIM2
CTXE2, CRXE2, DIR2, CSCK2
BRGC2
TPS20-TPS23, MDL20-MDL23
INTSR2/INTCSI2, INTSER2,
INTST2
SRIC2, CSIIC2, SERIC2, STIC2,
SRIF2, CSIIF2, SERIF2, STIF2
UART2/IOE2
401