NTE6850 データシートの表示（PDF） - NTE Electronics
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NTE6850 Datasheet PDF : 3 Pages
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Bus Timing Characteristics: (VL ≤ 4V, VH ≥ 2.4V, measurement points 0.8V and 2V unless
otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Cycle Time
Pulse Width, E Low
Pulse Width, E High
Clock Rise and Fall Time
Address Hold Time
Address Setup Time Before E
Chip Select Setup Time Before E
Chip Select Hold Time
Read Data Hold Time
Write Data Hold Time
Output data Delay Time
Input Data Setup Time
tcyc
PWEL
PWEH
tr, tf
tAH
tAS
tCS
tCH
tDHR
tDHW
tDHW
tDSW
Note 3
1.0 – 10.0 µs
430 – 9500 ns
450 – 9500 ns
– – 25 ns
10 – – ns
80 – – ns
80 – – ns
10 – – ns
20 – 50 ns
10 – – ns
– – 290 ns
165 – – ns
Note 3. The data bus output buffers are no longer sourcing or sinking current by tDHRmax (High
Impedance).
Pin Connection Diagram
VSS 1
Rx Data 2
Cx Clk 3
Tx Clk 4
RTS 5
Tx Data 6
IRQ 7
CS0 8
CS2 9
CS1 10
RS 11
VDD 12
24 CTS
23 DCD
22 D0
21 D1
20 D2
19 D3
18 D4
17 D5
16 D6
15 D7
14 E
13 R/W
24
13
1
12
1.300 (33.02)
Max
.100 (2.54)
1.100 (27.94)
.225
(5.73)
Max
.520
(13.2)
.126
(3.22)
Min
.600
(15.24)
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