R232c interface, 1. general specification, 2. data transmission format – Sharp MZ-3500 User Manual

Page 64: Mzs500

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MZS500

6. R232C INTERFACE

6-1. General specification

Input/output format

RS-232C bit serial inpul/output

No of channels

1 channel

Code used

JIS 7-channe(/JlS 8 channel

Baud rate

110 to 9600 bits/sec

Transmission system

Half-duplex

Synchronization method Start-stop

Communication control
procedure

Non-procedure

Data format

Stop bif 1/1.5/2, with or without
even or odd parity.

LSI used

8251 AC or 8253C-5

(Programmable Interval Timer)

6-2. Data transmission format

g O

g '

2 ^

2 ®

2 ^

2 ®

7-bit,

with parity

Start

bs\

Data bit (7 bits)

Parity bit Stop bit (1 or 2 bits)

7-bit,

without parity

Start bit

------Y-------

Data bit (7 bits)

Stop bit

8*bit,

with parity

Start bit

Data bit (8 bits)

Parity bit Stop bit <1 or 2 bits)

8-bit,

without parity

Start bit

Data bit 18 bits)

Stop bit (1 or 2 bits)

Example: 7-bits, even parity, 1 stop bit

2 ° 2 ' 2 ^ 2 ® 2 ' * 2 ® 2 ®

Start bit

Stop bit of preceding data

7-bit data {26H}

Panty bit

Stop bit

Start bit of

succeeding data