AT89LP51ED2-20AU Atmel, AT89LP51ED2-20AU Datasheet - Page 65
AT89LP51ED2-20AU
Manufacturer Part Number
AT89LP51ED2-20AU
Description
8-bit Microcontrollers - MCU 64KB 20MHz 2.4V-5.5V
Manufacturer
Atmel
Datasheet
1.AT89LP51ED2-20AAU.pdf
(254 pages)
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
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9.3
Table 9-3.
Table 9-4.
3714A–MICRO–7/11
Symbol
EA
EC
ET2
ES
ET1
EX1
ET0
EX0
Symbol
EADC
ECMP
ESPI
ETWI
EKBD
IEN0 = A8H
Bit Addressable
Bit
IEN1 = B1H
Bit Addressable
Bit
Interrupt Registers
Function
Global Interrupt Enable
All interrupts are disabled when EA = 0. When EA = 1, each interrupt source is enabled/disabled by setting /clearing its own enable bit.
PCA Interrupt Enable
Clear to disable the PCA interrupt. Set to enable the PCA interrupt when EA = 1.
Timer 2 Interrupt Enable
Clear to disable the Timer 2 interrupt. Set to enable the Timer 2 interrupt when EA = 1.
Serial Port Interrupt Enable
Clear to disable the UART interrupt. Set to enable the UART interrupt when EA = 1.
Timer 1 Interrupt Enable
Clear to disable the Timer 1 interrupt. Set to enable the Timer 1 interrupt when EA = 1.
External Interrupt 1 Enable.
Clear to disable the INT1 interrupt. Set to enable the INT1 interrupt when EA = 1.
Timer 0 Interrupt Enable
Clear to disable the Timer 0 interrupt. Set to enable the Timer 0 interrupt when EA = 1.
External Interrupt 0 Enable
Clear to disable the INT0 interrupt. Set to enable the INT0 interrupt when EA = 1.
Function
ADC Interrupt Enable.
Clear to disable the ADC interrupt. Set to enable the ADC interrupt when EA = 1.
Analog COmparator Interrupt Enable
Clear to disable the Analog Comparator interrupt. Set to enable the Analog Comparator interrupt when EA = 1.
SPI Interrupt Enable
Clear to disable the SPI interrupt. Set to enable the SPI interrupt when EA = 1.
TWI Interrupt Enable
Clear to disable the TWI interrupt. Set to enable the TWI interrupt when EA = 1.
Keyboard Interrupt Enable
Clear to disable the Keyboard interrupt. Set to enable the Keyboard interrupt when EA = 1.
IEN0 – Interrupt Enable Register 0
IEN1 – Interrupt Enable Register 1
EA
7
–
7
EC
6
–
6
EADC
ET2
5
5
AT89LP51RD2/ED2/ID2 Preliminary
ECMP
ES
4
4
ET1
3
–
3
ESPI
EX1
2
2
Reset Value = 0000 0000B
Reset Value = 0000 0000B
ETWI
ET0
1
1
EKBD
EX0
0
0
65
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