AT80C51RD2-3CSIM Atmel, AT80C51RD2-3CSIM Datasheet - Page 67
![IC MCU 8051 5V SPI 20MHZ 40-DIP](/photos/6/70/67049/453-40-dip_sml.jpg)
AT80C51RD2-3CSIM
Manufacturer Part Number
AT80C51RD2-3CSIM
Description
IC MCU 8051 5V SPI 20MHZ 40-DIP
Manufacturer
Atmel
Series
80Cr
Datasheet
1.AT80C51RD2-RLRUM.pdf
(81 pages)
Specifications of AT80C51RD2-3CSIM
Core Processor
8051
Core Size
8-Bit
Speed
40MHz
Connectivity
UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
32
Program Memory Type
ROMless
Ram Size
1K 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
-
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17.3.2
64
AT80C51RD2
External Program Memory Characteristics
Table 17-2.
Table 17-3.
Symbol Description
AC Parameters for a Fix Clock
Symbol
T
T
T
T
T
T
T
T
T
T
T
PLPH
LHLL
AVLL
LLAX
LLPL
AVIV
PLAZ
PLIV
PXIX
PXIZ
LLIV
T
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 FloatAfter PSEN
Address to Valid Instruction In
PSEN Low to Address Float
Symbol
T
T
T
T
T
T
T
T
T
T
T
PLPH
LHLL
AVLL
LLAX
LLPL
AVIV
PLAZ
PLIV
PXIX
PXIZ
LLIV
T
Min
25
35
50
5
5
5
0
-M
4113D–8051–01/09
Max
65
30
10
80
10
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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