T89C51RD2-SLSIM Atmel, T89C51RD2-SLSIM Datasheet - Page 85
![IC MICRO CTRL 64K FLASH 44PLCC](/photos/6/70/67043/453-44-plcc_sml.jpg)
T89C51RD2-SLSIM
Manufacturer Part Number
T89C51RD2-SLSIM
Description
IC MICRO CTRL 64K FLASH 44PLCC
Manufacturer
Atmel
Series
89Cr
Datasheet
1.T89C51RD2-SMSIM.pdf
(104 pages)
Specifications of T89C51RD2-SLSIM
Core Processor
8051
Core Size
8-Bit
Speed
40MHz
Connectivity
SPI, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
32
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Eeprom Size
2K x 8
Ram Size
1.25K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
44-PLCC
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Data Converters
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AC Parameters
Explanation of the AC
Symbols
4243G–8051–05/03
Figure 35. I
Figure 36. 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 status of that signal. The following is a list of all the characters and what
they stand for.
Example:T
T
T
T
T
AC characteristics of -M parts at 3 volts are similar to -L parts
(Load Capacitance for port 0, ALE and PSEN = 100 pF; Load Capacitance for all other
outputs = 80 pF.)
Table 44, Table 48 and Table 50 give the description of each AC symbols.
Table 46, Table 49 and Table 51 give for each range the AC parameter.
Table 47, Table 50 and Table 52 give the frequency derating formula of the AC parame-
ter 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
A
A
A
A
CCIV
T
= 0 to +70°C; V
= -40°C to +85°C; V
= 0 to +70°C; V
= -40°C to +85°C; V
LLPL
= 4T - x = 165 ns
= Time for ALE Low to PSEN Low.
AVLL
LLIU
(NC)
CC
= Time for Address Valid to ALE Low.
for -M and 20 MHz, Standard clock.
Test Condition, Power-Down Mode
SS
SS
V
= 0 V; V
= 0 V; 2.7 V < V
RST
XTAL2
XTAL1
V
CC
SS
SS
SS
T
-0.5V
0.45V
CHCL
= 0 V; V
= 0 V; 2.7 V < V
T
V
CLCH
EA
CC
I
CC
P0
CC
= T
V
= 5 V ± 10%; M range.
CC
CC
V
CHCL
CC
CC
= 5 V ± 10%; M range.
= 5ns.
CC
T
< 3.3 V; L range.
CLCH
CC
Tests in Active and Idle Modes
< 3.3 V; L range.
0.7V
0.2V
CC
CC
All other pins are disconnected.
-0.1
T89C51RD2
85
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