Parallel Interface; Interface Specifications; Interface Timing - Star Micronics SP300 Series Programmer's Manual

3-1. Interface Specifications

This printer has a parallel interface to communicate with the computer. The
operating specifications of the parallel interface are as follows.
(1) Data transfer rate
(2) Synchronization
(3) Handshaking
(4) Logic level

3-2. Interface Timing

A C K
Data
STROBE
BUSY

3. PARALLEL INTERFACE

: 1000 to 6000 characters per second
: Via externally supplied STROBE pulses
: ACK and BUSY signals
: Compatible with TTL level
About 9ms
Fig. 3-1 Interface timing diagram
– 22 –
T T T
T:more than 0.5 microsec.