z8f1621 ZiLOG Semiconductor, z8f1621 Datasheet - Page 125

• Manufacturer Part Number: z8f1621
• Description: High Performance 8-bit Microcontrollers
• Manufacturer: ZiLOG Semiconductor

Table 53. UART Receive Data Register (UxRXD)
Table 54. UART Status 0 Register (UxSTAT0)
PS019921-0308
BITS
FIELD
RESET
R/W
ADDR
BITS
FIELD
RESET
R/W
ADDR
UART Receive Data Register
UART Status 0 Register
RDA
7
7
TXD—Transmit Data
UART transmitter data byte to be shifted out through the TXDx pin.
Data bytes received through the RXDx pin are stored in the UART Receive Data register
(Table
with the Write-only UART Transmit Data register.
RXD—Receive Data
UART receiver data byte from the RXDx pin
The UART Status 0 and Status 1 registers
current UART operating configuration and status.
RDA—Receive Data Available
This bit indicates that the UART Receive Data register has received data. Reading the
UART Receive Data register clears this bit.
0 = The UART Receive Data register is empty.
1 = There is a byte in the UART Receive Data register.
53). The Read-only UART Receive Data register shares a Register File address
PE
6
6
OE
0
5
5
F40H and F48H
F41H and F49H
FE
4
4
RXD
R
R
X
(Table 54
BRKD
3
3
and
Z8 Encore! XP
Table 55
TDRE
2
2
Product Specification
on page 113) identify the
TXE
1
1
1
®
F64XX Series
CTS
X
0
0
UART
111