TS80C51RA2-VCA Atmel, TS80C51RA2-VCA Datasheet - Page 71

• Manufacturer Part Number: TS80C51RA2-VCA
• Description: IC MCU 8BIT 256BYTE 40MHZ 40-DIP
• Manufacturer: Atmel
• Series: 80Cr

Specifications of TS80C51RA2-VCA

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 40/30MHz
• Connectivity: UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Type: ROMless
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

11.5.11
11.5.12
Figure 11-11. External Clock Drive Waveforms
11.5.13
Figure 11-12. AC Testing Input/Output Waveforms
11.5.14
Figure 11-13. Float Waveforms
4188F–8051–01/08
T
CHCX
Symbol
T
T
T
T
T
CHCX
CLCX
CLCH
CHCL
CLCL
/T
External Clock Drive Characteristics (XTAL1)
External Clock Drive Waveforms
AC Testing Input/Output Waveforms
Float Waveforms
CLCX
INPUT/OUTPUT
Parameter
Oscillator Period
High Time
Low Time
Rise Time
Fall Time
Cyclic ratio in X2 mode
0.45 V
V
CC
-0.5 V
AC inputs during testing are driven at V
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
≥ ± 20mA.
V
CC
0.2V
0.45 V
-0.5 V
0.7V
V
V
OH
OL
CC
T
-0.1 V
+0.1 V
CC
CHCL
-0.1 V
FLOAT
V
LOAD
IH
min for a logic “1” and V
T
CLCX
0.2V
0.2V
CC
CC
CC
+0.9
-0.1
- 0.5 for a logic “1” and 0.45V for a logic “0”. Timing
T
V
V
CLCL
Min
LOAD
LOAD
25
40
5
5
+0.1 V
T
-0.1 V
CLCH
T
CHCX
IL
max for a logic “0”.
AT/TS8xC51Rx2
Max
60
5
5
OH
/V
OL
level occurs. I
Units
ns
ns
ns
ns
ns
%
OL
/I
71
OH