COP8SA-DM National Semiconductor, COP8SA-DM Datasheet - Page 58
COP8SA-DM
Manufacturer Part Number
COP8SA-DM
Description
MODULE DEBUGGING FOR COP8SA
Manufacturer
National Semiconductor
Datasheet
1.DM-COP820D.pdf
(254 pages)
Specifications of COP8SA-DM
Module/board Type
Debugger Module
For Use With/related Products
Cop 8
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
*COP8SA-DM
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The External Oscillator mode can be selected by programming ECON Bit 3 to 0 and
ECON Bit 4 to 0. CKI can be driven by an external clock signal provided it meets the
specified duty cycle, rise and fall times, and input levels. G7/CKO is available as a
general purpose input G7 and/or Halt control. Figure 2-13 shows the external oscillator
connection diagram.
R/C Oscillator
The R/C Oscillator mode can be selected by programming ECON Bit 3 to 1 and ECON Bit
4 to 0. In R/C oscillation mode, CKI is left floating, while G7/CKO is available as a general
purpose input G7 and/or HALT control. The R/C controlled oscillator has on-chip resistor
and capacitor for maximum R/C oscillator frequency operation. The maximum frequency
is 5 MHz +/- 35% for V
For max frequency operation, the CKI pin should be left floating. For lower frequencies,
an external capacitor should be connected between CKI and GND. Table 2-4 shows the
oscillator frequency as a function of external capacitance on the CKI pin. Figure 2-14
shows the R/C oscillator configuration.
2-20
Table 2-4 R/C Oscillator Configuration, -40˚C to +85˚C, V
COP8SAx7 MICROCONTROLLER
External Capacitor
CC
between 4.5V to 5.5V and temperature range of -40˚C to +85˚C.
(pF)
TBD
150
52
0
9
Figure 2-13 External Oscillator
OSC Freq Variation of 35%
EXTERNAL
CLOCK
R/C OSC Freq
32 KHz
(MHz)
INPUT/or
Restart
HALT
5
4
2
1
Instr. Cycle
( Sec)
312.5
2.0
2.5
5.0
10
CC
= 4.5V to 5.5V,
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