83C196LC Intel Corporation, 83C196LC Datasheet - Page 21

• Manufacturer Part Number: 83C196LC
• Description: CHMOS 16-BIT MICROCONTROLLER
• Manufacturer: Intel Corporation

6.0 THERMAL CHARACTERISTICS
All thermal impedance data is approximate for static air conditions at 1 watt of power dissipation. Values will
change depending on operating conditions and the application. The Intel Packaging Handbook (order number
240800) describes Intel’s thermal impedance test methodology. The Components Quality and Reliability
Handbook (order number 210997) provides quality and reliability information.
7.0 DESIGN CONSIDERATIONS
The 83C196LC and 83C196LD are pin-compatible replacements for the 87C196JT and 87C196JR microcon-
trollers with the following exceptions.
• The synchronous serial I/O port was enhanced to provide more flexible communication to other devices;
• The A/D converter was removed to optimize die size.
Follow these recommendations to help maintain hardware and software compatibility between 52-pin, 68-pin,
and future microcontrollers.
• Bus width. Since the 83C196LC and LD have neither a WRH# nor a BUSWIDTH pin, the microcontrollers
• Wait states. Since the 83C196LC and LD have no READY pin, the microcontrollers cannot rely on a
• Write cycle during reset. If the microcontroller is reset during a write cycle, the contents of the external
• EPA7. This function exists in the83C196LC and LD, but the associated pin is omitted. You can use this
• EPA timer reset/write conflict. If an EPA channel resets the timer at the same time your code writes to
• Valid time matches. The timer must increment or decrement to the compare value for a valid match to
• NMI. Since the 83C196LC and LD have no NMI pin, the nonmaskable interrupt is not supported. Initialize
NOTES:
1.
2.
3.
ADVANCE INFORMATION
however, it remains compatible with the 87C196JT and JR non-enhanced SSIO.
cannot dynamically switch between 8- and 16-bit bus widths. Program the CCBs to select 8-bit bus mode.
READY signal to control wait states. Program the CCBs to limit the number of wait states (0, 1, 2, or 3).
memory device may be corrupted.
channel either as a software timer or to reset the timers.
the timer, it is indeterminate which action takes precedence. If your code uses an EPA channel to reset a
timer, do not write to the timer.
occur. Writing the compare value to the timer will not cause a match. Resetting the timer also will not
cause a match when the compare value is zero.
the NMI vector (at location 203EH) to point to a RET instruction. This method provides glitch protection
only.
ments are taken 1 ft. away from case in static air flow environment.
All values of
how much airflow) and microcontroller power dissipation at temperature of operation. Typical varia-
tions are ± 2
Values listed are at a maximum power dissipation of 0.50 W.
JA
JC
= Thermal resistance between juction and package surface (case).
= Thermal resistance between junction and the surrounding environment (ambient). Measure-
Package Type
°
52-pin PLCC
C/W.
JA
and
JC
may fluctuate depending on the environment (with or without airflow, and
Table 12. Thermal Characteristics
42
AUTOMOTIVE — 83C196LC, 83C196LD
°
JA
C/W
15
°
JC
C/W
21