AT80C51RD2 Atmel Corporation, AT80C51RD2 Datasheet - Page 19

• Manufacturer Part Number: AT80C51RD2
• Manufacturer: Atmel Corporation

Specifications of AT80C51RD2

• Max. Operating Frequency: 60 MHz
• Cpu: 8051-12C
• Max I/o Pins: 32
• Spi: 1
• Uart: 1
• Sram (kbytes): 1.25
• Operating Voltage (vcc): 2.7 to 5.5
• Timers: 4
• Watchdog: Yes

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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