TS87C52X2 ATMEL Corporation, TS87C52X2 Datasheet - Page 49

• Manufacturer Part Number: TS87C52X2
• Description: 8-bit Microcontroller 8 Kbytes Otp
• Manufacturer: ATMEL Corporation

External Clock Drive
Characteristics (XTAL1)
External Clock Drive
Waveforms
Figure 23. External Clock Drive Waveforms
AC Testing Input/Output
Waveforms
Figure 24. AC Testing Input/Output Waveforms
Float Waveforms
Figure 25. Float Waveforms
4184E–8051–09/02
INPUT/OUTPUT
0.45V
VCC-0.5V
VCC-0.5V
Table 36. AC Parameters
AC inputs during testing are driven at V
Timing measurement are made at V
For timing purposes a port pin is no longer floating when a 100 mV change from load
voltage occurs and begins to float when a 100 mV change from the loaded V
occurs. I
0.2VCC-0.1 V
T
0.7VCC
CHCX
Symbol
0.45V
VOH-0.1 V
VOL+0.1 V
T
T
T
T
T
TCHCL
CHCX
CLCH
CHCL
CLCL
CLCX
/T
CLCX
OL
/I
OH
Parameter
Oscillator Period
High Time
Low Time
Rise Time
Fall Time
Cyclic ratio in X2 mode
FLOAT
≥ ± 20mA.
VLOAD
TCLCX
0.2VCC+0.9
0.2VCC-0.1
TCLCL
VLOAD+0.1 V
VLOAD-0.1 V
IH
min for a logic “1” and V
CC
TCLCH
TCHCX
- 0.5 for a logic “1” and 0.45V for a logic “0”.
Min
25
40
5
5
IL
max for a logic “0”.
TS8xCx2X2
Max
60
5
5
OH
/V
Units
OL
ns
ns
ns
ns
ns
%
level
49