Hitachi H8/3035 Series Hardware Manual page 330

1 (LSB)
Serial data 0 D0
Start
bit
1 bit
Figure 11-2 Data Format in Asynchronous Communication
(Example: 8-Bit Data with Parity and 2 Stop Bits)
316
D1 D2 D3 D4
Transmit or receive data
7 bits or 8 bits
One unit of data (character or frame)
(MSB)
D5 D6 D7 0/1
Parity
bit
1 bit or 1 bit or
no bit 2 bits
Idle (mark) state
1
1 1
Stop
bit