AT89C51RD2 Atmel Corporation, AT89C51RD2 Datasheet - Page 42

• Manufacturer Part Number: AT89C51RD2
• Manufacturer: Atmel Corporation

Specifications of AT89C51RD2

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 60 MHz
• Cpu: 8051-12C
• Max I/o Pins: 32
• Spi: 1
• Uart: 1
• Sram (kbytes): 2
• Self Program Memory: API
• Operating Voltage (vcc): 2.7 to 5.5
• Timers: 4
• Isp: UART
• Watchdog: Yes

42
AT89C51RD2/ED2
Table 13-6.
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 13-7.
CH - PCA Counter Register High (0F9h)
Reset Value = 0000 0000b
Not bit addressable
Table 13-8.
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
Mnemonic
Mnemonic
CCAPnL Registers (n = 0 - 4)
CH Register
CL Register
Bit
Bit
Bit
6
6
6
-
-
-
-
-
-
Description
PCA Module n Compare/Capture Control
CCAPnL Value
Description
PCA counter
CH Value
Description
PCA Counter
CL Value
5
5
5
-
-
-
4
4
4
-
-
-
3
3
3
-
-
-
2
2
2
-
-
-
1
1
1
-
-
-
4235K–8051–05/08
0
0
0
-
-
-