COP424C NSC [National Semiconductor], COP424C Datasheet - Page 4

• Manufacturer Part Number: COP424C
• Description: Single-Chip 1k and 2k CMOS Microcontrollers
• Manufacturer: NSC [National Semiconductor]

COP424C COP425C COP426C and COP444C COP445C
AC Electrical Characteristics
Note 1 Supply current is measured after running for 2000 cycle times with a square-wave clock on CKI CKO open and all other pins pulled up to V
resistors See current drain equation on page 17
Note 2 The HALT mode will stop CKI from oscillating in the RC and crystal configurations Test conditions all inputs tied to V
tied to ground all outputs low and tied to ground
Note 3 When forcing HALT current is only needed for a short time (approx 200 ns) to flip the HALT flip-flop
Note 4 This parameter is only sampled and not 100% tested Variation due to the device included
Note 5 Voltage change must be less than 0 5 volts in a 1 ms period
Note 6 SO output sink current must be limited to keep V
Instruction Cycle Time (tc)
Operating CKI
Frequency
Duty Cycle (Note 4)
Rise Time (Note 4)
Fall Time (Note 4)
Instruction Cycle Time
RC Oscillator (Note 4)
Inputs (See Figure 3 )
Output Propagation Delay
Microbus Timing
t
t
t
t
Read Operation ( Figure 4 )
Chip Select Stable before RD
Chip Select Hold Time for RD
RD Pulse Width
Data Delay from RD
RD to Data Floating
Write Operation ( Figure 5 )
Chip Select Stable before WR
Chip Select Hold Time for WR
WR Pulse Width
Data Set-Up Time for WR
Data Hold Time for WR
INTR Transition Time from WR
SETUP
HOLD
PD1
PD1
t
t
PD0
PD0
Parameter
d
d
b
b
d
d
d
d
16 mode
16 mode
t
t
RR
4 mode
8 mode
4 mode
8 mode
WW
b
b
t
t
DF
RD
b
t
b
(Note 4)
WD
t
DW
b
b
b
b
b
t
t
t
t
CSR
RCS
CSW
WCS
t
WI
OL
less than 0 2V
0 C
V
4 5V
V
4 5V
f
f
f
R
C
G Inputs
SI Input
All Others
V
4 5V
V
V
4 5V
CL
1
1
1
CC t
CC t
CC t
OUT
CC t
e
e
e
e
e
s
e
82 pF
4 MHz
4 MHz External Clock
4 MHz External Clock
30k
T
l
l
l
l
50 pF V
e
A s
4 5V
4 5V
V
V
V
V
4 5V
4 5V
1 5V C
CC t
CC t
CC t
CC t
g
70 C unless otherwise specified
CC
5% V
g
Conditions
when part is running in order to prevent entering test mode
5% (
2 4V
2 4V
2 4V
2 4V
4
CC
L
V
e
e
CC
CC t
d
100 pF R
5V
4 Mode)
e
g
4 5V
5V
5%
L
e
5k
tc 4
0 25
Min
400
400
320
100
DC
DC
DC
DC
DC
DC
0 3
1 7
1 0
16
40
65
20
65
20
4
5
a
CC
7
L lines in TRI-STATE mode and
Max
250
500
375
250
700
DC
DC
1 0
2 0
4 0
1 0
1 0
4 0
60
60
40
11
CC
Units
MHz
MHz
MHz
MHz
with 5k
kHz
kHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
%
s
s
s
s
s
s
s
s
s
s