AT89C51ID2-SLRIM Atmel, AT89C51ID2-SLRIM Datasheet - Page 56
![IC MCU FLASH 8051 64K 5V 44-PLCC](/photos/6/70/67043/453-44-plcc_sml.jpg)
AT89C51ID2-SLRIM
Manufacturer Part Number
AT89C51ID2-SLRIM
Description
IC MCU FLASH 8051 64K 5V 44-PLCC
Manufacturer
Atmel
Series
89Cr
Datasheet
1.AT89C51ID2-RLTUM.pdf
(157 pages)
Specifications of AT89C51ID2-SLRIM
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
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Data Converters
-
Other names
AT89C51ID2SLRIMTR
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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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