Epson TM-T90 - Page 43

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TM-T90
Specification
(STANDARD)
26 25
+5 V Signal Sender Characteristics
Specifications
Characteristics Symbol
Min Max
Conditions
Output HIGH voltage V
OH
*2.4 V 5.5 V *I
OH
=0.32 mA
Output LOW voltage V
OL
- - ** While the power is OFF
Output HIGH current I
OH
- 0.32 mA V
OH
=2.4 V
Output LOW current I
OL
- ** - While the power is OFF
** No guarantee is offered to V
OL
and I
OL
while the power is OFF.
2.1.2.5 Data receiving timing (compatibility mode)
DATA Data n Data n+1
nStrobe
Busy Peripheral Busy
nAck
tHold tSTB tSetup
tBUSY tReady
tNext
tnBUSY tACK tReply
Specifications
Characteristics Symbol
Min[ns] Max[ns]
Data Hold Time (host) tHold 750 --
Data Setup Time tSetup 750 --
STROBE Pulse Width tSTB 750 --
READY Cycle Idle Time tReady 0 --
BUSY Output Delay Time tBUSY 0 500
Data Processing Time tReply 0
∞
ACKNLG Pulse Width tACK 500
10 µs
BUSY Release Time tnBUSY 0
∞
ACK Cycle Idle Time tNext 0 --
*The printer latches data at a nStrobe ↓ timing