AT89C51ID2-RLRIM Atmel, AT89C51ID2-RLRIM Datasheet - Page 60
![IC MCU FLASH 8051 64K 5V 44-VQFP](/photos/6/92/69202/313-44-vqfp_sml.jpg)
AT89C51ID2-RLRIM
Manufacturer Part Number
AT89C51ID2-RLRIM
Description
IC MCU FLASH 8051 64K 5V 44-VQFP
Manufacturer
Atmel
Series
89Cr
Datasheet
1.AT89C51ID2-RLTUM.pdf
(157 pages)
Specifications of AT89C51ID2-RLRIM
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-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Data Converters
-
Other names
AT89C51ID2RLRIMTR
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4289C–8051–11/05
Table 45. T2CON Register
T2CON - Timer 2 Control Register (C8h)
Reset Value = 0000 0000b
Bit addressable
Number
TF2
Bit
7
7
6
5
4
3
2
1
0
Mnemonic
CP/RL2#
EXF2
EXEN2
C/T2#
RCLK
EXF2
TCLK
TR2
Bit
TF2
6
Timer 2 overflow Flag
Must be cleared by software.
Set by hardware on timer 2 overflow, if RCLK = 0 and TCLK = 0.
Timer 2 External Flag
Set when a capture or a reload is caused by a negative transition on T2EX pin if
EXEN2=1.
When set, causes the CPU to vector to timer 2 interrupt routine when timer 2
interrupt is enabled.
Must be cleared by software. EXF2 doesn’t cause an interrupt in Up/down
counter mode (DCEN = 1)
Receive Clock bit for UART
Cleared to use timer 1 overflow as receive clock for serial port in mode 1 or 3.
Set to use timer 2 overflow as receive clock for serial port in mode 1 or 3.
Transmit Clock bit for UART
Cleared to use timer 1 overflow as transmit clock for serial port in mode 1 or 3.
Set to use timer 2 overflow as transmit clock for serial port in mode 1 or 3.
Timer 2 External Enable bit
Cleared to ignore events on T2EX pin for timer 2 operation.
Set to cause a capture or reload when a negative transition on T2EX pin is
detected, if timer 2 is not used to clock the serial port.
Timer 2 Run control bit
Cleared to turn off timer 2.
Set to turn on timer 2.
Timer/Counter 2 select bit
Cleared for timer operation (input from internal clock system: F
Set for counter operation (input from T2 input pin, falling edge trigger). Must be
0 for clock out mode.
Timer 2 Capture/Reload bit
If RCLK=1 or TCLK=1, CP/RL2# is ignored and timer is forced to auto-reload on
timer 2 overflow.
Cleared to auto-reload on timer 2 overflows or negative transitions on T2EX pin
if EXEN2=1.
Set to capture on negative transitions on T2EX pin if EXEN2=1.
RCLK
5
TCLK
4
EXEN2
3
Description
TR2
2
AT89C51ID2
C/T2#
1
CLK PERIPH
CP/RL2#
).
0
60
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