AT89C51RB2 Atmel Corporation, AT89C51RB2 Datasheet - Page 38

• Manufacturer Part Number: AT89C51RB2
• Manufacturer: Atmel Corporation

Specifications of AT89C51RB2

• Flash (kbytes): 16 Kbytes
• Max. Operating Frequency: 60 MHz
• Cpu: 8051-12C
• Max I/o Pins: 32
• Spi: 1
• Uart: 1
• Sram (kbytes): 1.25
• Self Program Memory: API
• Operating Voltage (vcc): 2.7 to 5.5
• Timers: 4
• Isp: UART
• Watchdog: Yes

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AT89C51RB2/RC2
Table 27. CCAPnL Registers (n = 0-4)
CCAP0L – PCA Module 0 Compare/Capture Control Register Low (0EAh)
CCAP1L – PCA Module 1 Compare/Capture Control Register Low (0EBh)
CCAP2L – PCA Module 2 Compare/Capture Control Register Low (0ECh)
CCAP3L – PCA Module 3 Compare/Capture Control Register Low (0EDh)
CCAP4L – PCA Module 4 Compare/Capture Control Register Low (0EEh)
Reset Value = 0000 0000b
Not bit addressable
Table 28. CH Register
CH – PCA Counter Register High (0F9h)
Reset Value = 0000 0000b
Not bit addressable
Table 29. CL Register
CL – PCA Counter Register Low (0E9h)
Reset Value = 0000 0000b
Not bit addressable
Number
Number
Number
7 - 0
7 - 0
7 - 0
Bit
Bit
Bit
7
7
7
-
-
-
Mnemonic Description
Mnemonic Description
Mnemonic Description
Bit
Bit
Bit
6
6
6
-
-
-
-
-
-
PCA Module n Compare/Capture Control
CCAPnL Value
PCA Counter
CH Value
PCA Counter
CL Value
5
5
5
-
-
-
4
4
4
-
-
-
3
3
3
-
-
-
2
2
2
-
-
-
1
1
1
-
-
-
4180E–8051–10/06
0
0
0
-
-
-