CBM-290/291User ’sManual
18 CITIZEN
6.4 Timing chart
(1) Data Inputand P rintingTiming
T1, T2, T3 : 0.5 microsec. MIN
T4 : 270 ns MAX
T5 : 2.3 microsec. TYP
T6 : 500 ms MIN (On supplying power)
6.5Data receiving control
When BUSY signal is "LOW", data from the host can be received. When it being "HIGH", data can not be
received.
6.6Buffering
4 Kbytes inputbuffer isincorporated. Due to this large buffer, host side is released immediately.
ACK is not outputted.