TL16PNP550A_08 Datasheet, PDF (11/40 Pages) Texas Instruments – ASYNCHRONOUS COMMUNICATIONS ELEMENT WITH PLUG-AND-PLAY (PnP) AND AUTOFLOW CONTROL

ą
TL16PNP550A
ASYNCHRONOUS COMMUNICATIONS ELEMENT
WITH PLUGĆANDĆPLAY (PnP) AND AUTOFLOW CONTROL
SLLS190B − MARCH 1995 − REVISED MARCH 1996
system timing requirements over recommended ranges of supply voltage and operating free-air
temperature
PARAMETER
tcR
tcW
tw1†
tw2†
tw6
tw7
tw8
tsu3
th1
Cycle time, read (tw7 + td8 + td9)
Cycle time, write (tw6 + td5 + td6)
Pulse duration, XIN high
Pulse duration, XIN low
Pulse duration, write strobe (IOW)
Pulse duration, read strobe (IOR)
Pulse duration, master reset
Setup time, data valid before IOW↑
Hold time, chip select (CS) valid after address (A0
− A2) becomes invalid
th2 Hold time, data valid after IOW↑
td4
Delay time, chip select (CS) valid after address
valid (A0 − A2)
td5 Delay time, address valid (A0 − A2) before IOW↓
td6 Delay time, address valid (A0 − A2) before IOR↓
td7
Delay time, chip select (CS) valid to data valid
(D7 − D0)
td8 Delay time, IOR↑ to floating data (D7 − D0)
td9
Delay time, EXINTR↑ or EXINTR↓ to IRQx↑ or
IRQx↓
† _{This only applies when PNPBYPASS is low.}
ALTERNATE
SYMBOL
RC
WC
tXH
tXL
tWR
tRD
tMR
tDS
tCH
tDH
tCSRW
tAW
tAR
FIGURE TEST CONDITIONS
Figure 5
Figure 5
Figure 6
Figure 7
f = 16 MHz maximum
f = 16 MHz maximum
Figure 6
Figure 6,
Figure 7
From the first rising
edge of XIN after
address invalid
Figure 6
Figure 6,
Figure 7
From the first rising
edge of XIN after
address valid
Figure 6
Figure 7
tCSVD
Figure 7 CL = 75 pF
tHZ
Figure 7 CL = 75 pF
Figure 8
MIN MAX UNIT
87
ns
87
ns
25
ns
25
ns
75
ns
75
ns
1
µs
15
ns
20 ns
5
ns
30 ns
7
ns
7
ns
30 ns
20 ns
15 ns
oscillator cell maximum switching characteristics, V_CC = 4.75 V, T_J = 115°C
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
INTRINSIC
DELAY
(ns)
DELTA
DELAY
(ns/pF)
CL = 15 pF
DELAY (ns)
CL = 50 pF CL = 85 pF
tPLH
tPHL
tr
tf
− 0.25
0.300
4.26
14.76
25.26
XIN
XOUT
− 0.24
0.206
2.85
10.06
17.27
Output rise time, XOUT
5.83
21.15
36.47
Output fall time, XOUT
3.76
13.50
23.24
CL = 100 pF
29.77
20.36
43.04
27.41
baud generator switching characteristics over recommended ranges of supply voltage and
operating free-air temperature, C_L = 75 pF (see Figure 5)
PARAMETER
tw3†
Pulse duration, PNPS1 low
tw4†
Pulse duration, PNPS1 high
td1†
Delay time, XIN↑ to PNPS1↑
td2†
Delay time, XIN↑↓ to PNPS1↓
† _{This only applies when PNPBYPASS is low.}
ALTERNATE
SYMBOL
tLW
tHW
tBLD
tBHD
TEST CONDITIONS
f = 16 MHz, CLK ÷ 2
f = 16 MHz, CLK ÷ 2
MIN MAX UNIT
50
ns
50
ns
45 ns
45 ns
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
• POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
11