cop87l88gw National Semiconductor Corporation, cop87l88gw Datasheet - Page 4

• Manufacturer Part Number: cop87l88gw
• Description: One-time Programmable Otp Microcontroller
• Manufacturer: National Semiconductor Corporation

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AC Electrical Characteristics
Note 1 Maximum rate of voltage change to be defined
Note 2 Supply current is measured after running 2000 cydes with a square wave CKI input CKO open inputs at rails and outputs open
Note 3 The HALT mode will stop CKI from oscillatng Test conditions All inputs tied to V
low and not driving a load D outputs programmed low and not driving a load Parameter refers to HALT mode entered via setting bit 7 of the G Port data register
Part will pull up CKI during HALT in crystal clock mode
Note 4 The user must guarantee that D2 pin does not source more than 10 mA during RESET If D2 sources more than 10 mA during reset the device will go into
programming mode
Note 5 Pins G6 and RESET are designed with a high voltage input network These pins allow input voltages greater than V
V
(typical) These two pins will not latch up The voltage at the pins must be limited to less than 14V WARNING Voltages in excess of 14V will cause damage to the
pins This warning excludes ESD transients
Note 6 Condition and parameter valid only for part in HALT mode
Note 7 Parameter characterized but not tested
Note 8 t
Note 9 The output propagation delay is referenced to the end of the instruction cycle where the output change occurs
Instruction Cycle Time (t
CKI Clock Duty Cycle (Note 6)
Inputs
Output Propagation Delay (Note 9)
MICROWIRE
MICROWIRE Hold Time (t
MICROWIRE Output Propagation Delay (t
Input Pulse Width (Note 8)
Reset Pause Width
CC
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Crystal Resonator
Ceramic
Rise Time (Note 6)
Fall Time (Note 6)
t
t
t
SO SK
All Others
Interrupt Input High Time
Interrupt Input Low Time
Timer 1 2 Input High Time
Timer 1 2 Input Low Time
Capture Timer High Time
Capture Timer Low Time
SETUP
HOLD
PD1
when biased at voltages greater than V
c
t
e
PD0
Instruction Cycle Time
TM
Setup Time (t
Parameter
c
)
UWH
UWS
) (Note 7)
CC
) (Note 7)
(the pins do not have source current when biased at a voltage below V
UPD
FIGURE 3 MICROWIRE PLUS Timing
)
b
40 C
f
f
f
V
V
R
V
V
V
V
V
e
e
e
CC t
CC t
CC t
CC t
CC t
CC t
CC t
L
s
e
Max
10 MHz Ext Clock
10 MHz Ext Clock
T
2 2k C
A s
Conditions
4 5V
4 5V
4 5V
4 5V
4 5V
4 5V
4 5V
4
a
L
85 C unless otherwise specified
e
CC
100 pF
L C E F and G port I O’s configured as outputs and programmed
Min
200
TL DD 12527 – 3
1 0
40
60
20
56
1
1
1
1
1
1
1
CC
) The effective resistance to V
CC
Typ
and the pins will have sink current to
Max
220
DC
0 7
60
5
5
1
CC
is 750
Units
CKI
CKI
%
ns
ns
ns
t
c
s
s
s
s
s
s