12
FN2950.3
April 26, 2006
AC Electrical Specifications VCC = 5.0V ±10%, TA = 0°C to +70°C (C82C52), TA = -40°C to +85°C (l82C52)
TA = -55°C to +125°C (M82C52)
Timing Requirements and Responses
SYMBOL
PARAMETER
MIN
MAX
UNITS
TEST CONDITIONS
(1)
TSVCTL
Select Setup to Control Leading Edge
30
-
ns
(2)
TCTHSX
Select Hold from Control Trailing Edge
50
-
ns
(3)
TCTLCTH
Control Pulse Width
150
-
ns
Control Consists of RD or
WR
(4)
TCTHCTL
Control Disable to Control Enable
190
-
ns
(5)
TRLDV
Read Low to Data Valid
-
120
ns
1, See AC Test Circuit
(6)
TRHDZ
Read Disable
0
60
ns
2, See AC Test Circuit
(7)
TDVWH
Data Setup Time
50
-
ns
(8)
TWHDX
Data Hold Time
20
-
ns
(9)
FC
Clock Frequency
0
16
MHz
TCHCL + TCLCH must be
≥ 62.5ns
(10)
TCHCL
Clock High Time
25
-
ns
(11)
TCLCH
Clock Low Time
25
-
ns
(12)
TR/TF
IX Input Rise/Fall Time (External Clock)
-
tx
ns
Whichever is smaller
(13)
TFCO
Clock Output Fall Time
-
15
ns
CL = 50pf
(14)
TRCO
Clock Output Rise Time
-
15
ns
CL = 50pf
tx
1
6FC
------------or 50ns
≥
AC Testing Input, Output Waveforms
FIGURE 12. PROPAGATION DELAY
FIGURE 13. ENABLE/DISABLE DELAY
AC TESTING: All input signals (except IX and RST) must switch between VIL -0.4V and VIH +0.4V. Input rise and fall times are driven at 1ns/V.
INPUT
VIH + 0.4V
VIL - 0.4V
1.5V
VOH
VOL
OUTPUT
90%
10%
OUTPUT
82C52