AT89C51RC2-3CSIM Atmel, AT89C51RC2-3CSIM Datasheet - Page 111
![IC 8051 MCU FLASH 32K 40DIP](/photos/6/70/67049/453-40-dip_sml.jpg)
AT89C51RC2-3CSIM
Manufacturer Part Number
AT89C51RC2-3CSIM
Description
IC 8051 MCU FLASH 32K 40DIP
Manufacturer
Atmel
Series
89Cr
Datasheet
1.AT89C51RB2-RLTIL.pdf
(127 pages)
Specifications of AT89C51RC2-3CSIM
Core Processor
8051
Core Size
8-Bit
Speed
60MHz
Connectivity
SPI, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
32
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
1.25K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
40-DIP (0.600", 15.24mm)
For Use With
AT89STK-11 - KIT STARTER FOR AT89C51RX2
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Data Converters
-
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AC Parameters
Explanation of the AC
Symbols
External Program Memory
Characteristics
4180E–8051–10/06
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 status of that signal. The following is a list of all the characters and what
they stand for.
Example:T
(Load Capacitance for port 0, ALE and PSEN = 100 pF; Load Capacitance for all other
outputs = 80 pF.)
Table 75 Table 78, and Table 80 give the description of each AC symbols.
Table 77, Table 79 and Table 81 give the AC parameterfor each range.
Table 76, Table 77 and Table 82 gives the frequency derating formula of the AC param-
eter for each speed range description. To calculate each AC symbols, take the x value
in the correponding column (-M or -L) and use this value in the formula.
Example: T
x = 35 ns
T 50 ns
T
Table 75. Symbol Description
CCIV
T
LLPL
= 4T - x = 165 ns
= Time for ALE Low to PSEN Low.
Symbol
T
T
T
T
T
T
T
T
T
T
T
PLPH
LHLL
AVLL
LLAX
LLPL
PLAZ
AVLL
PLIV
PXIX
PXIZ
AVIV
LLIV
T
LLIU
= Time for Address Valid to ALE Low.
for -M and 20 MHz, Standard clock.
Parameter
Oscillator clock period
ALE pulse width
Address Valid to ALE
Address Hold after ALE
ALE to Valid Instruction In
ALE to PSEN
PSEN Pulse Width
PSEN to Valid Instruction In
Input Instruction Hold after PSEN
Input Instruction Float after PSEN
Address to Valid Instruction In
PSEN Low to Address Float
AT89C51RB2/RC2
111
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