AT89LP51ED2-20AAU Atmel, AT89LP51ED2-20AAU Datasheet - Page 67
AT89LP51ED2-20AAU
Manufacturer Part Number
AT89LP51ED2-20AAU
Description
8-bit Microcontrollers - MCU 64KB 20MHz 2.4V-5.5V
Manufacturer
Atmel
Datasheet
1.AT89LP51ED2-20AAU.pdf
(254 pages)
Specifications of AT89LP51ED2-20AAU
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
LQFP-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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Table 9-7.
Table 9-8.
3714A–MICRO–7/11
Symbol
IP1DIS
PPCH
PT2H
PSH
PT1H
PX1H
PT0H
PX0H
Symbol
IP3DIS
PADCH
PCMPH
PSPH
PTWH
PKBH
IPH0 = B7H
Not Bit Addressable
Bit
IPH1 = B3H
Not Bit Addressable
Bit
Function
Interrupt Level 1 Disable
Clear to enable all interrupts with priority level 1. Set to disable all interrupts with priority level 1.
PCA Interrupt Priority High
High order bit for PCA interrupt priority level.
Timer 2 Interrupt Priority High
High order bit for Timer 2 interrupt priority level.
Serial Port Interrupt Priority High
High order bit for UART interrupt priority level.
Timer 1 Interrupt Priority High
High order bit for Timer 1 interrupt priority level.
External Interrupt 1 Priority High
High order bit for INT1 interrupt priority level.
Timer 0 Interrupt Priority High
High order bit for Timer 0 interrupt priority level.
External Interrupt 0 Priority High
High order bit for INT0 interrupt priority level.
Function
Interrupt Level 3 Disable
Clear to enable all interrupts with priority level 3. Set to disable all interrupts with priority level 3.
ADC Interrupt Priority High
High order bit for ADC interrupt priority level.
Analog Comparator Interrupt Priority High
High order bit for Analog Comparator interrupt priority level.
SPI Interrupt Priority High
High order bit for SPI interrupt priority level.
TWI Interrupt Priority High
High order bit for TWI interrupt priority level.
Keyboard Interrupt Priority High
High order bit for Keyboard interrupt priority level.
IPH0 – Interrupt Priority High Register 0
IPH1 – Interrupt Priority High Register 1
IP1DIS
IP3DIS
7
7
PPCH
–
6
6
PADCH
PT2H
5
5
PCMPH
AT89LP51RD2/ED2/ID2 Preliminary
PSH
4
4
PT1H
3
–
3
PSPH
PX1H
2
2
Reset Value = 0000 0000B
Reset Value = 0000 0000B
PTWH
PT0H
1
1
PKBH
PX0H
0
0
67
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