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CBM-290/291 User’s Manual
18
CITIZEN
6.4 Timing chart
(1) Data Input and Printing Timing
T1, T2, T3 : 0.5 micro sec. MIN
T4 : 270 ns MAX
T5 : 2.3 micro sec. TYP
T6 : 500 ms MIN (On supplying power)
6.5 Data receiving control
When BUSY signal is "LOW", data from the host can be received. When it being "HIGH", data can not be
received.
6.6 Buffering
4 K bytes input buffer is incorporated. Due to this large buffer, host side is released immediately.
ACK is not outputted.