AT89LP51ED2-20AU Atmel, AT89LP51ED2-20AU Datasheet - Page 100

• Manufacturer Part Number: AT89LP51ED2-20AU
• Description: 8-bit Microcontrollers - MCU 64KB 20MHz 2.4V-5.5V
• Manufacturer: Atmel

Specifications of AT89LP51ED2-20AU

• Rohs: yes
• Core: 8051
• Processor Series: AT89x
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 20 MHz
• Program Memory Size: 64 KB
• Data Ram Size: 256 B
• On-chip Adc: Yes
• Operating Supply Voltage: 2.4 V to 5.5 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: TQFP-44
• Mounting Style: SMD/SMT
• Data Rom Size: 4 KB
• Interface Type: 2-Wire, SPI, UART
• Number Of Programmable I/os: 36
• Number Of Timers: 3
• Program Memory Type: Flash
• Factory Pack Quantity: 160

Table 15-5.
15.2
100
CL Address = 0E9H
Not Bit Addressable
Bit
Symbol
C
7-0
PCA Modules
AT89LP51RD2/ED2/ID2 Preliminary
C7
7
Function
Module n Compare/Capture Register Low
Holds the lower order bits of the 16-bit PCA Timer/Counter.
CL – PCA Counter Register Low
C6
Figure 15-2. PCA Interrupt System
Each one of the five compare/capture modules has six possible functions. It can perform:
In addition, Module 4 can be used as a Watchdog Timer.
Each module in the PCA has a special function register associated with it. These registers are:
CCAPM0 for Module 0, CCAPM1 for Module 1, etc. (See
bits that control the mode that each module will operate in.
6
• 16-bit Capture, positive-edge triggered
• 16-bit Capture, negative-edge triggered
• 16-bit Capture, both positive and negative-edge triggered
• 16-bit Software Timer
• 16-bit High Speed Output
• 8-bit Pulse Width Modulator
• The ECCF bit (CCAPMn.0 where n = 0, 1, 2, 3, or 4 depending on the module) enables the
• PWM (CCAPMn.1) enables the pulse width modulation mode.
CCF flag in the CCON SFR to generate an interrupt when a match or compare occurs in the
associated module.
Timer/Counter
Module 4
Module 3
Module 2
Module 1
Module 0
C5
5
CCON
7
4
3
2
1
0
C4
CF
CCF0
CCF0
CCF0
CCF0
CCF0
4
CCAPMn.0
ECCF4
ECCF3
ECCF2
ECCF1
ECCF0
CMOD.0
ECF
C3
3
C2
2
Table
IEN0.6
EC
Reset Value = 0000 0000B
15-6). The registers contain the
C1
1
IEN0.7
EA
PCA Interrupt
to priority
decoder
C0
3714A–MICRO–7/11
0