AT89LP51ED2 Atmel Corporation, AT89LP51ED2 Datasheet - Page 102

• Manufacturer Part Number: AT89LP51ED2
• Manufacturer: Atmel Corporation

Specifications of AT89LP51ED2

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 20 MHz
• Cpu: 8051-1C
• Max I/o Pins: 42
• Spi: 1
• Twi (i2c): 1
• Uart: 1
• Adc Channels: 7
• Adc Resolution (bits): 10
• Adc Speed (ksps): 153.8
• Sram (kbytes): 2.25
• Eeprom (bytes): 4096
• Self Program Memory: API
• Operating Voltage (vcc): 2.4 to 5.5
• Timers: 4
• Isp: SPI/OCD/UART
• Watchdog: Yes

Note:
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 15-7.
Table 15-8.
102
ECOMn
CCAP0H Address = 0FAH
CCAP1H Address = 0FBH
CCAP2H Address = 0FCH
CCAP3H Address = 0FDH
CCAP4H Address = 0FEH
Not Bit Addressable
Bit
Symbol
CCAPn
CCAP0L Address = 0EAH
CCAP1L Address = 0EBH
CCAP2L Address = 0ECH
CCAP3L Address = 0EDH
CCAP4L Address = 0EEH
Not Bit Addressable
Bit
Symbol
CCAPn
X
X
X
0
1
1
1
1
PCA Module Modes (CCAPMn Registers
15-8
7-0
CCAPn.15
CCAPn.7
AT89LP51RD2/ED2/ID2 Preliminary
CAPPn
7
7
Function
Module n Compare/Capture Register High
Holds the higher order bits of the 16-bit Compare/Capture value for Module n.
Function
Module n Compare/Capture Register Low
Holds the lower order bits of the 16-bit Compare/Capture value for Module n.
0
1
0
1
0
0
0
0
CCAPnH – PCA Module n Compare/Capture Register High (n = 0–4)
CCAPnL – PCA Module n Compare/Capture Register Low (n = 0–4)
CAPNn
CCAPn.14
CCAPn.6
0
0
1
1
0
0
0
0
6
6
MATn
0
0
0
0
1
1
0
1
CCAPn.13
CCAPn.5
5
5
TOGn
X
0
0
0
0
0
1
0
CCAPn.12
CCAPn.4
PWMn
4
4
0
0
0
0
0
1
0
0
ECCFn
CCAPn.11
CCAPn.3
X
X
X
X
X
X
0
0
3
3
Module Function
No Operation
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.
16-bit High Speed Output
8-bit PWM
Watchdog Timer (module 4 only)
CCAPn.10
CCAPn.2
2
2
Table 15-7
Reset Value = 0000 0000B
Reset Value = 0000 0000B
CCAPn.9
CCAPn.1
1
1
&
Table
15-8).
CCAPn.8
CCAPn.0
3714A–MICRO–7/11
0
0