TS80C51RA2-VIA Atmel, TS80C51RA2-VIA Datasheet - Page 71

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

Specifications of TS80C51RA2-VIA

• 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: -40°C ~ 85°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: -

10.5.11. External Clock Drive Characteristics (XTAL1)
10.5.12. External Clock Drive Waveforms
10.5.13. AC Testing Input/Output Waveforms
AC inputs during testing are driven at V
are made at V
10.5.14. Float Waveforms
Rev. C - 06 March, 2001
T
CHCX
INPUT/OUTPUT
Symbol
T
T
T
T
T
CHCX
CLCX
CLCH
CHCL
CLCL
/T
CLCX
0.45 V
V
IH
CC
-0.5 V
min for a logic “1” and V
Oscillator Period
High Time
Low Time
Rise Time
Fall Time
Cyclic ratio in X2 mode
V
0.2V
CC
0.7V
Figure 31. AC Testing Input/Output Waveforms
0.45 V
-0.5 V
V
V
Parameter
Figure 30. External Clock Drive Waveforms
CC
OH
OL
T
CC
CHCL
-0.1 V
-0.1 V
+0.1 V
CC
Figure 32. Float Waveforms
Table 46. AC Parameters
IL
FLOAT
- 0.5 for a logic “1” and 0.45V for a logic “0”. Timing measurement
V
max for a logic “0”.
LOAD
T
CLCX
0.2V
0.2V
CC
CC
+0.9
-0.1
T
Min
V
CLCL
V
25
40
5
5
LOAD
LOAD
T
CLCH
TS83C51RB2/RC2/RD2
TS87C51RB2/RC2/RD2
+0.1 V
-0.1 V
T
CHCX
TS80C51RA2/RD2
Max
60
5
5
Units
ns
ns
ns
ns
ns
%
71