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COP881C Datasheet, PDF (7/30 Pages) National Semiconductor (TI) – Microcontrollers
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COP880C COP881C COP882C
DC Electrical Characteristics (Continued)
Note 1 Rate of voltage change must be less than 0 5V ms
Note 2 Supply current is measured after running 2000 cycles with a square wave CKI input CKO open inputs at rails and outputs open
Note 3 The HALT mode will stop CKI from oscillating in the RC and the Crystal configurations Test conditions All inputs tied to VCC L C and G ports TRI-STATE
and tied to ground all outputs low and tied to ground
Note 4 Pins G6 and RESET are designed with a high voltage input network for factory testing These pins allow input voltages greater than VCC and the pins will
have sink current to VCC when biased at voltages greater than VCC (the pins do not have source current when biased at a voltage below VCC) The effective
resistance to VCC is 750X (typ) These two pins will not latch up The voltage at the pins must be limited to less than 14V
Note 5 To maintain RAM integrity the voltage must not be dropped or raised instantaneously
AC Electrical Characteristics b40 C s TA s a85 C unless otherwise specified
Parameter
Condition
Min
Typ
Instruction Cycle Time (tc)
Crystal Resonator or External
VCC t 4 5V
1
(Div-by 10)
2 5V s VCC k 4 5V
25
R C Oscillator Mode
VCC t 4 5V
3
(Div-by 10)
2 5V s VCC k 4 5V
75
CKI Clock Duty Cycle (Note 6)
fr e Max
40
Rise Time (Note 6)
fr e 10 MHz Ext Clock
Fall Time (Note 6)
fr e 10 MHz Ext Clock
Inputs
tSETUP
tHOLD
VCC t 4 5V
200
2 5V s VCC k 4 5V
500
VCC t 4 5V
60
2 5V s VCC k 4 5V
150
Output Propagation Delay
tPD1 tPD0
SO SK
All Others
CL e 100 pF RL e 2 2 kX
VCC t 4 5V
2 5V s VCC k 4 5V
VCC t 4 5V
2 5V s VCC k 4 5V
MICROWIRETM Setup Time (tUWS)
20
MICROWIRE Hold Time (tUWH)
56
MICROWIRE Output
Propagation Delay (tUPD)
Input Pulse Width
Interrupt Input High Time
tC
Interrupt Input Low Time
tC
Timer Input High Time
tC
Timer Input Low Time
tC
Reset Pulse Width
10
Note 6 Parameter characterized but not production tested
Max
DC
DC
DC
DC
60
12
8
07
1 75
1
25
220
Units
ms
ms
ms
ms
%
ns
ns
ns
ns
ns
ns
ms
ms
ms
ms
ns
ns
ns
ms
Timing Diagram
TL DD 10802 – 2
FIGURE 2 MICROWIRE PLUS Timing
7
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