AT89C51RB2-SLSUM Atmel, AT89C51RB2-SLSUM Datasheet - Page 111
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AT89C51RB2-SLSUM
Manufacturer Part Number
AT89C51RB2-SLSUM
Description
IC 8051 MCU FLASH 16K 44PLCC
Manufacturer
Atmel
Series
89Cr
Datasheet
1.AT89C51RB2-RLTIL.pdf
(127 pages)
Specifications of AT89C51RB2-SLSUM
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
16KB (16K 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
44-PLCC
Processor Series
AT89x
Core
8051
Data Bus Width
8 bit
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
3rd Party Development Tools
PK51, CA51, A51, ULINK2
Minimum Operating Temperature
- 40 C
For Use With
AT89OCD-01 - USB EMULATOR FOR AT8XC51 MCUAT89STK-11 - KIT STARTER FOR AT89C51RX2
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT89C51RB2-SLSUM
Manufacturer:
ATMEL
Quantity:
34 021
Part Number:
AT89C51RB2-SLSUM
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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