AT87C52X2-3CSUV Atmel, AT87C52X2-3CSUV Datasheet - Page 49

• Manufacturer Part Number: AT87C52X2-3CSUV
• Description: Microcontrollers (MCU) Microcontroller
• Manufacturer: Atmel

Specifications of AT87C52X2-3CSUV

• Data Bus Width: 8 bit
• Program Memory Type: EPROM
• Program Memory Size: 8 KB
• Data Ram Size: 256 B
• Interface Type: UART
• Maximum Clock Frequency: 30 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 3 bit
• Operating Supply Voltage: 5 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: Through Hole
• Package / Case: PDIL-40
• Minimum Operating Temperature: 0 C
• Lead Free Status / Rohs Status: No

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
4184I–8051–02/08
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
- 0.5 for a logic “1” and 0.45V for a logic “0”.
TCHCX
Min
25
40
5
5
IL
max for a logic “0”.
Max
60
5
5
OH
/V
Units
OL
ns
ns
ns
ns
ns
%
level
49