83C166 Siemens Semiconductor Group, 83C166 Datasheet - Page 48

• Manufacturer Part Number: 83C166
• Description: 16-Bit CMOS Single-Chip Microcontroller
• Manufacturer: Siemens Semiconductor Group

AC Characteristics (cont’d)
CLKOUT and READY
V
T
T
C
Parameter
CLKOUT cycle time
CLKOUT high time
CLKOUT low time
CLKOUT rise time
CLKOUT fall time
CLKOUT rising edge to
ALE falling edge
Synchronous READY
setup time to CLKOUT
Synchronous READY
hold time after CLKOUT
Asynchronous READY
low time
Asynchronous READY
setup time
Asynchronous READY
hold time
Async. READY hold time
after RD, WR high
(Demultiplexed Bus)
Notes
1)
2)
Semiconductor Group
A
A
CC
L
These timings are given for test purposes only, in order to assure recognition at a specific clock edge.
Demultiplexed bus is the worst case. For multiplexed bus 2TCL are to be added to the maximum values. This
adds even more time for deactivating READY.
= 0 to +70 ˚C
= -40 to +85 ˚C
(for Port 0, Port 1, Port 4, ALE, RD, WR, BHE, CLKOUT) = 100 pF
= 5 V
1)
1)
10 %;
2)
V
for SAB 83C166-5M, SAB 80C166-M
for SAB 83C166-5M-T3, SAB 80C166-M-T3
SS
= 0 V
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
29
30
31
32
33
34
35
36
37
58
59
60
CC 50
CC 20
CC 15
CC –
CC –
CC 0 + t
SR 10
SR 10
SR 65
SR 20
SR 0
SR 0
min.
Max. CPU Clock
A
= 20 MHz
47
max.
50
–
–
5
5
10 + t
–
–
–
–
–
0
+ 2t
2)
A
A
+ t
F
min.
2TCL
TCL – 5
TCL – 10
–
–
0 + t
10
10
2TCL + 15
20
0
0
1/2TCL = 1 to 20 MHz
Variable CPU Clock
A
SAB 80C166/83C166
max.
2TCL
–
–
5
5
10 + t
–
–
–
–
–
TCL - 25
+ 2t
2)
A
A
+ t
F
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns