82C52 Datasheet, PDF (12/20 Pages) Intersil Corporation – CMOS Serial Controller Interface

82C52
AC Electrical Specifications V_CC = 5.0V ±10%, T_A = 0°C to +70°C (C82C52), T_A = -40°C to +85°C (l82C52)
T_A = -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
(12) TR/TF IX Input Rise/Fall Time (External Clock)
25
-
ns
-
tx
ns
tx
≥
-----¹------
6FC
or
50ns
Whichever is smaller
(13) TFCO Clock Output Fall Time
-
15
ns
CL = 50pf
(14) TRCO Clock Output Rise Time
-
15
ns
CL = 50pf
AC Testing Input, Output Waveforms
INPUT
V_IH + 0.4V
1.5V
V_IL - 0.4V
1.5V
OUTPUT
V_OH
V_OL
OUTPUT
90%
10%
FIGURE 12. PROPAGATION DELAY
FIGURE 13. ENABLE/DISABLE DELAY
AC TESTING: All input signals (except IX and RST) must switch between V_IL -0.4V and V_IH +0.4V. Input rise and fall times are driven at 1ns/V.
12
FN2950.3
April 26, 2006