AT89C51ED2-3CSUM Atmel, AT89C51ED2-3CSUM Datasheet - Page 32

• Manufacturer Part Number: AT89C51ED2-3CSUM
• Description: IC 8051 MCU FLASH 64K 40DIP
• Manufacturer: Atmel
• Series: 89Cr

Specifications of AT89C51ED2-3CSUM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 60MHz
• Connectivity: 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: 40-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Converters: -

12.3
32
Registers
AT89C51RD2/ED2
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 12-2. Clock-out Mode C/T2 = 0
Table 12-1.
T2CON - Timer 2 Control Register (C8h)
TF2
7
T2EX
T2CON Register
FCLK PERIPH
EXF2
6
T2
RCLK
5
:6
TCLK
4
T2CON
EXEN2
Q
Toggle
T2CON
EXEN2
TR2
D
3
T2CON
RCAP2L
TR2
EXF2
(8-bit)
(8-bit)
2
TL2
T2MOD
T2OE
RCAP2H
(8-bit)
(8-bit)
TH
C/T2#
2
1
INTERRUPT
TIMER 2
4235K–8051–05/08
OVER-
FLOW
CP/RL2#
0