AT89LP51RC2 Atmel Corporation, AT89LP51RC2 Datasheet - Page 65
AT89LP51RC2
Manufacturer Part Number
AT89LP51RC2
Description
Manufacturer
Atmel Corporation
Specifications of AT89LP51RC2
Flash (kbytes)
32 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)
1.375
Self Program Memory
API
Operating Voltage (vcc)
2.4 to 5.5
Timers
4
Isp
SPI/OCD/UART
Watchdog
Yes
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Table 9-7.
Table 9-8.
3722A–MICRO–10/11
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
AT89LP51RB2/RC2/IC2 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
65
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