AT89C51ID2-SLRUM Atmel, AT89C51ID2-SLRUM Datasheet - Page 56
![IC 8051 MCU 64K FLASH 44-PLCC](/photos/6/70/67043/453-44-plcc_sml.jpg)
AT89C51ID2-SLRUM
Manufacturer Part Number
AT89C51ID2-SLRUM
Description
IC 8051 MCU 64K FLASH 44-PLCC
Manufacturer
Atmel
Series
89Cr
Datasheet
1.AT89C51ID2-RLTUM.pdf
(157 pages)
Specifications of AT89C51ID2-SLRUM
Core Processor
8051
Core Size
8-Bit
Speed
60MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
34
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Eeprom Size
2K x 8
Ram Size
2K 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
2 KB
Interface Type
UART, SPI, TWI
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
Mounting Style
SMD/SMT
3rd Party Development Tools
PK51, CA51, A51, ULINK2
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Data Converters
-
Lead Free Status / Rohs Status
Details
Other names
AT89C51ID2-SLRUMTR
Available stocks
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Part Number
Manufacturer
Quantity
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Internal Baud Rate Generator
(BRG)
Figure 24. Internal Baud Rate
4289C–8051–11/05
BRR
F
PER
Table 37. Baud Rate Selection Table UART
When the internal Baud Rate Generator is used, the Baud Rates are determined by the
BRG overflow depending on the BRL reload value, the value of SPD bit (Speed Mode)
in BDRCON register and the value of the SMOD1 bit in PCON register.
•
Baud_Rate =
BRL = 256 -
(T2CON)
The baud rate for UART is token by formula:
TCLK
X
X
X
0
1
0
1
0
1
/6
6
6
(1-SPD)
(1-SPD)
2
2
SPD
(T2CON)
SMOD1
SMOD1
0
1
⋅ 32 ⋅ Baud_Rate
⋅ 32 ⋅ (256 -BRL)
RCLK
X
X
X
0
0
1
1
0
1
auto reload counter
⋅ F
⋅ F
PER
PER
BRG
BRL
(BDRCON)
TBCK
0
0
0
0
1
1
0
0
1
overflow
(BDRCON)
RBCK
/2
0
0
0
0
0
0
1
1
1
SMOD1
0
1
Clock Source
UART Tx
INT_BRG
INT_BRG
INT_BRG
Timer 1
Timer 2
Timer 1
Timer 2
Timer 1
Timer 2
AT89C51ID2
INT_BRG
Clock Source
UART Rx
INT_BRG
INT_BRG
INT_BRG
Timer 1
Timer 1
Timer 2
Timer 2
Timer 1
Timer 2
56
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