AT89C51RC2-RLTUL Atmel, AT89C51RC2-RLTUL Datasheet - Page 37

• Manufacturer Part Number: AT89C51RC2-RLTUL
• Description: IC 8051 MCU FLASH 32K 44VQFP
• Manufacturer: Atmel
• Series: 89Cr

Specifications of AT89C51RC2-RLTUL

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 1.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 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: 1280 B
• 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
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Minimum Operating Temperature: - 40 C
• For Use With: AT89OCD-01 - USB EMULATOR FOR AT8XC51 MCUAT89STK-11 - KIT STARTER FOR AT89C51RX2
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details

4180E–8051–10/06
Table 25. PCA Module Modes (CCAPMn Registers)
There are two additional registers associated with each of the PCA Modules. They are
CCAPnH and CCAPnL and these are the registers that store the 16-bit count when a
capture occurs or a compare should occur. When a Module is used in the PWM mode
these registers are used to control the duty cycle of the output (see Table 26 and
Table 27).
Table 26. CCAPnH Registers (n = 0-4)
CCAP0H – PCA Module 0 Compare/Capture Control Register High (0FAh)
CCAP1H – PCA Module 1 Compare/Capture Control Register High (0FBh)
CCAP2H – PCA Module 2 Compare/Capture Control Register High (0FCh)
CCAP3H – PCA Module 3 Compare/Capture Control Register High (0FDh)
CCAP4H – PCA Module 4 Compare/Capture Control Register High (0FEh)
Reset Value = 0000 0000b
Not bit addressable
ECOMn
Number
X
X
X
0
1
1
1
1
7 - 0
Bit
7
-
CAPPn
0
1
0
1
0
0
0
0
Mnemonic Description
Bit
6
-
-
CAPNn
0
0
1
1
0
0
0
0
PCA Module n Compare/Capture Control
CCAPnH Value
MATn
5
-
0
0
0
0
1
1
0
1
TOGn
X
0
0
0
0
0
1
0
4
-
PWMm
0
0
0
0
0
0
1
0
3
-
ECCFn Module Function
AT89C51RB2/RC2
X
X
X
X
X
X
0
0
16-bit capture by a positive-edge
trigger on CEXn
16-bit capture by a negative trigger
on CEXn
16-bit capture by a transition on
CEXn
16-bit Software Timer/Compare
mode.
No Operation
16-bit High-speed Output
8-bit PWM
Watchdog Timer (Module 4 only)
2
-
1
-
0
-
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