Seiko Instruments DPU-30 用户手册
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
SEL OUT, PE, NEAR_OUT
4.75
− 5.1 V
Low output voltage
BUSY, !ACK, !ERROR,
SEL OUT, PE, NEAR_OUT
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