cop8sce9 National Semiconductor Corporation, cop8sce9 Datasheet - Page 39

• Manufacturer Part Number: cop8sce9
• Description: 8-bit Cmos Flash Microcontroller With 8k Memory, Virtual Eeprom And Brownout Reset
• Manufacturer: National Semiconductor Corporation

8.0 USART
8.1 USART CONTROL AND STATUS REGISTERS
The operation of the USART is programmed through three
registers: ENU, ENUR and ENUI.
8.2 DESCRIPTION OF USART REGISTER BITS
ENU — USART CONTROL AND STATUS REGISTER (Ad-
dress at 0BA)
Bit 7
PEN
PSEL1 XBIT9/
PSEL0
(Continued)
CHL1
CHL0
ERR
FIGURE 22. USART Block Diagram
RBFL
TBMT
Bit 0
39
PEN: This bit enables/disables Parity (7- and 8-bit modes
only). Read/Write, cleared on reset.
PEN = 0
PEN = 1
PSEL1, PSEL0: Parity select bits. Read/Write, cleared on
reset.
PSEL1 = 0, PSEL0 = 0
PSEL1 = 0, PSEL1 = 1
PSEL1 = 1, PSEL0 = 0
PSEL1 = 1, PSEL1 = 1
Parity disabled.
Parity enabled.
Odd Parity (if Parity enabled)
Even Parity (if Parity enabled)
Mark(1) (if Parity enabled)
Space(0) (if Parity enabled)
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