Citizen Systems iDP3240 - Manual (Page 53)

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6.2.3 Timing Chart (Compatibility Mode)
Data input and print timing
6.2.4 Data Reception Control
When the Busy signal is at “LOW”, the printer can receive data from the host
computer, but when at “HIGH”, data reception is not possible.
6.2.5 Buffering
Since the printer can buffer 64K bytes of data, the host computer is immediately
made free.
T1, T2, T3: 0.5 µs MIN
T4:
270 ns MAX
T5: 2.3 µs TYP
T6: 500 ms MIN (At power- on)
T6
T1 T3
T2
T4
T5
Power
Data
nStrobe
Busy
nAck