AT87C51RC2-RLTUL Atmel, AT87C51RC2-RLTUL Datasheet - Page 21

• Manufacturer Part Number: AT87C51RC2-RLTUL
• Description: IC 8051 MCU 32K OTP 30MHZ 44VQFP
• Manufacturer: Atmel
• Series: 87Cr

Specifications of AT87C51RC2-RLTUL

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 30/20MHz
• Connectivity: UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: OTP
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• Data Bus Width: 8 bit
• Data Ram Size: 512 B
• Interface Type: UART
• Maximum Clock Frequency: 60 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 3
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details

Figure 6-3.
4188F–8051–01/08
Clock-Out Mode C/T2 = 0
T2EX
T2
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.
Table 6-2.
XTAL1
TF2
7
(:1 in X2 mode)
T2CON Register
T2CON - Timer 2 Control Register (C8h)
EXF2
:2
6
T2CON reg
EXEN2
Q
Toggle
RCLK
T2CON reg
5
TR2
D
TCLK
4
T2CON reg
RCAP2L
EXF2
(8-bit)
(8-bit)
TL2
T2MOD reg
T2OE
EXEN2
RCAP2H
(8-bit)
(8-bit)
TH2
3
INTERRUPT
TIMER 2
OVERFLOW
TR2
AT/TS8xC51Rx2
2
C/T2#
1
CP/RL2#
0
21