80C196NU Intel Corporation, 80C196NU Datasheet - Page 40

• Manufacturer Part Number: 80C196NU
• Description: COMMERCIAL CHMOS MICROCONTROLLER
• Manufacturer: Intel Corporation

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8XC196NU COMMERCIAL CHMOS 16-BIT MICROCONTROLLER
36
6.2.7
F
T
T
T
T
T
†
Symbol
XTAL
XTAL
XHXX
XLXX
XLXH
XHXL
Assumes an external clock; the maximum input frequency for an external crystal oscillator is 25 MHz.
1
1
EXTERNAL CLOCK DRIVE
External Input Frequency (1/
External Input Frequency (1/
External Input Frequency (1/
Oscillator Period (T
Oscillator Period (T
Oscillator Period (T
High Time
Low Time
Rise Time
Fall Time
0.45 V
AC testing inputs are driven at 3.5 V for a logic "1" and 0.45 V for
a logic "0". Timing measurements are made at 2.0 V for a logic
"1" and 0.8 V for a logic "0".
3.5 V
Figure 15. AC Testing Output Waveforms During 5.0 Volt Testing
0.7 V
CC
T
XHXX
+ 0.5 V
XLXL
XLXL
XLXL
Figure 14. External Clock Drive Waveforms
), PLL disabled
), PLL in 2x mode
), PLL in 4x mode
Parameter
Table 18. External Clock Drive
T
T
T
2.0 V
0.8 V
XLXL
XLXL
XLXL
), PLL disabled
), PLL in 2x mode
), PLL in 4x mode
0.3 V
CC
T
– 0.5 V
XLXX
Test Points
T
XLXH
T
XLXL
0.3 V
0.7 V
0.35T
0.35T
CC
2.0 V
0.8 V
– 0.5 V
Min
CC
16
20
40
80
8
8
XTAL
XTAL
+ 0.5 V
1
1
PRELIMINARY
0.65T
0.65T
Max
12.5
62.5
125
125
50
25
10
10
XTAL
XTAL
†
1
1
T
A2120-02
A2119-02
Units
XHXL
MHz
MHz
MHz
ns
ns
ns
ns
ns
ns
ns