AT89C51RD2-RLRUM Atmel, AT89C51RD2-RLRUM Datasheet - Page 36

• Manufacturer Part Number: AT89C51RD2-RLRUM
• Description: IC MCU FLASH 8051 EEP 64K 44VQFP
• Manufacturer: Atmel
• Series: 89Cr

Specifications of AT89C51RD2-RLRUM

• 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
• 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
• Processor Series: AT89x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 2 KB
• Interface Type: UART, SPI
• 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
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• For Use With: AT89STK-11 - KIT STARTER FOR AT89C51RX2
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details
• Other names: AT89C51RD2-RLRUMTR

Figure 13-1. PCA Timer/Counter
36
AT89C51RD2/ED2
F
F
Idle
CLK PERIPH
CLK PERIPH
T0 OVF
P1.2
/6
/2
• The ECF bit which when set causes an interrupt and the PCA overflow flag CF (in the CCON
SFR) to be set when the PCA timer overflows.
CIDL
CF
WDTE
CR
CCF4 CCF3 CCF2 CCF1 CCF0
CPS1 CPS0
CH
16 Bit Up Counter
ECF
CL
CMOD
0xD9
CCON
0xD8
Overflow
To PCA
Modules
IT
4235K–8051–05/08