Epson TM-T90 - Page 44

Confidential
EPSON
TITLE SHEET
REVISION
NO.
SHEET NEXT
F
TM-T90
Specification
(STANDARD)
27 26
2.1.2.6 Notes on resetting the printer through the interface
To enable printer reset through the interface nInit signal (pin #31) in compatibility mode, the following
signal timing shall be statisfied. However, the printer reset is ignored when the signal nSelectln (pin
#36 , 1284-Active HIGH) is active in reverse mode.
• DC characteristics:
TTL level
• AC characteristics:
Minimum reset pulse width: T
RS
50 µs (min.)
Trailing edge period: tf 500 ns (max.)
Leading edge period: tr 500 ns (max.)
tr
nInit
nSelectIn
(1284-Active)
min.0
T
RS
tf
min.1 ms