AT80C51RD2-SLSUM Atmel, AT80C51RD2-SLSUM Datasheet - Page 62

• Manufacturer Part Number: AT80C51RD2-SLSUM
• Description: MCU, 8BIT, 8051, 5V, SPI, 20MHZ, 44PLCC
• Manufacturer: Atmel

Specifications of AT80C51RD2-SLSUM

• Controller Family/series: (8051) 8052
• No. Of I/o's: 32
• Ram Memory Size: 1280Byte
• Cpu Speed: 40MHz
• No. Of Timers: 3
• No. Of Pwm Channels: 5
• Core Size: 8bit
• Oscillator Type: External Only
• Processor Series: AT80x
• Core: 8051
• Data Bus Width: 8 bit
• Program Memory Type: ROMLess
• Data Ram Size: 1280 B
• Interface Type: UART, SPI
• Maximum Clock Frequency: 60 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 3
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: PLCC
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Minimum Operating Temperature: - 40 C
• Cpu Family: AT80
• Device Core: 8051
• Device Core Size: 8b
• Frequency (max): 40MHz
• Program Memory Size: Not Required
• Total Internal Ram Size: 1.25KB
• # I/os (max): 32
• Number Of Timers - General Purpose: 3
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 2.7V
• Instruction Set Architecture: CISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 44
• Package Type: PLCC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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