AT89LP51ED2-20AU Atmel, AT89LP51ED2-20AU Datasheet - Page 67

• 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 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
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