Seiko Instruments DPU-30 - Manual (Page 27)

4-5
3. Input / Output signal specifications
Table 4-3 I/O Signal Specifications
Rate Value
Item Condition
Min Typ. Max
Unit
High input voltage !RESET 1.76
− 5.5 V
Low input voltage !RESET 0
− 1.44 V
High input voltage
DATA0 to 7, !STROBE,
!FEED_IN, NEAR_C
3.15
−
5.5 V
Low input voltage
DATA0 to 7, !STROBE,
!FEED_IN, NEAR_C
0
−
1.35 V
High input voltage RXD, CTS
+2.8 − +15 V
Low input voltage RXD, CTS
−15 − −2.8 V
High output voltage
BUSY, !ACK, !ERROR,
SEL OUT, PE, NEAR_OUT
4.75
− 5.1 V
Low output voltage
BUSY, !ACK, !ERROR,
SEL OUT, PE, NEAR_OUT
0
− 0.5 V
High output voltage
TXD, RTS
( RL
= 3 KΩ)
+5 +9 +15 V
Low output voltage
TXD, RTS
( RL
= 3 KΩ)
−15 −9 −5 V