TS80C51RA2-VCA Atmel, TS80C51RA2-VCA Datasheet - Page 62

• 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
11.5.1
62
AC Parameters
AT/TS8xC51Rx2
Explanation of the AC Symbols
Figure 11-3. I
Figure 11-4. I
Figure 11-5. Clock Signal Waveform for I
Each timing symbol has 5 characters. The first character is always a “T” (stands for time). The
other characters, depending on their positions, stand for the name of a signal or the logical sta-
tus of that signal. The following is a list of all the characters and what they stand for.
Example:T
T
T
ranges.
A
A
= 0 to +70°C (commercial temperature range); V
= -40°C to +85°C (industrial temperature range); V
Reset = Vss after a high pulse
during at least 24 clock cycles
T
LLPL
Reset = Vss after a high pulse
during at least 24 clock cycles
AVLL
= Time for ALE Low to PSEN Low.
V
CC
CC
= Time for Address Valid to ALE Low.
CC
T
-0.5V
CLOCK
SIGNAL
0.45V
CHCL
Test Condition, Idle Mode
Test Condition, Power-Down Mode
(NC)
T
CLCH
(NC)
= T
RST
XTAL2
XTAL1
V
CHCL
SS
RST
XTAL2
XTAL1
V
= 5ns.
SS
V
T
EA
CC
CLCH
I
P0
CC
V
EA
CC
V
P0
I
CC
0.7V
CC
0.2V
V
CC
V
CC
CC
CC
CC
V
CC
Tests in Active and Idle Modes
-0.1
SS
= 0 V; V
SS
All other pins are disconnected.
All other pins are disconnected.
= 0 V; V
CC
= 5 V ± 10%; -M and -V ranges.
CC
= 5 V ± 10%; -M and -V
4188F–8051–01/08