AT80C51RD2-RLTIM Atmel, AT80C51RD2-RLTIM Datasheet - Page 19

• Manufacturer Part Number: AT80C51RD2-RLTIM
• Description: IC MCU 8051 5V SPI 20MHZ 44-VQFP
• Manufacturer: Atmel
• Series: 80Cr

Specifications of AT80C51RD2-RLTIM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Type: ROMless
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

4113D–8051–01/09
It is possible to use Timer 2 as a baud rate generator and a clock generator simultaneously. For
this configuration, the baud rates and clock frequencies are not independent since both func-
tions use the values in the RCAP2H and RCAP2L registers.
Figure 9-2.
Table 9-1.
T2CON - Timer 2 Control Register (C8h)
TF2
7
T2EX
Clock-Out Mode C/T2 = 07
T2CON Register
EXF2
F
6
CLK PERIPH
T2
RCLK
5
:6
TCLK
4
T2CON
EXEN2
Q
Toggle
T2CON
EXEN2
TR2
D
3
T2CON
TR2
RCAP2L
2
EXF2
(8-bit)
(8-bit)
TL2
T2MOD
AT80C51RD2
T2OE
RCAP2H
(8-bit)
(8-bit)
C/T2#
TH2
1
INTERRUPT
TIMER 2
OVEFLOW
CP/RL2#
0
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