Datasheet

504

Transmit/Receive Formats: Table 14.10 shows the 11 communication formats that can be

selected in the asynchronous mode. The format is selected by settings in the serial mode register

(SMR).

Table 14.10 Serial Communication Formats (Asynchronous Mode)

SMR Bits Serial Transmit/Receive Format and Frame Length

CHR PE MP STOP 1 2 345678 9 10 11 12

0 0 0 0 START 8-Bit data STOP

0 0 0 1 START 8-Bit data STOP STOP

0 1 0 0 START 8-Bit data P STOP

0 1 0 1 START 8-Bit data P STOP STOP

1 0 0 0 START 7-Bit data STOP

1 0 0 1 START 7-Bit data STOP STOP

1 1 0 0 START 7-Bit data P STOP

1 1 0 1 START 7-Bit data P STOP STOP

0 — 1 0 START 8-Bit data MPB STOP

0 — 1 1 START 8-Bit data MPB STOP STOP

1 — 1 0 START 7-Bit data MPB STOP

1 — 1 1 START 7-Bit data MPB STOP STOP

—: Don’t care bits.

Note: START: Start bit

STOP: Stop bit

P: Parity bit

MPB: Multiprocessor bit

Clock: An internal clock generated by the on-chip baud rate generator or an external clock input

from the SCK pin can be selected as the SCI transmit/receive clock. The clock source is selected

by the C/A bit in the serial mode register (SMR) and bits CKE1 and CKE0 in the serial control