AT89C51RB2-3CSUL Atmel, AT89C51RB2-3CSUL Datasheet - Page 58
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AT89C51RB2-3CSUL
Manufacturer Part Number
AT89C51RB2-3CSUL
Description
MCU 8051 16K FLASH 3V 44-PLCC
Manufacturer
Atmel
Series
89Cr
Datasheet
1.AT89C51RB2-RLTIL.pdf
(127 pages)
Specifications of AT89C51RB2-3CSUL
Core Processor
8051
Core Size
8-Bit
Speed
40MHz
Connectivity
SPI, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
32
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Ram Size
1.25K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
44-PLCC
Processor Series
AT89x
Core
8051
Data Bus Width
8 bit
Data Ram Size
1280 B
Interface Type
UART, SPI
Maximum Clock Frequency
60 MHz
Number Of Programmable I/os
32
Number Of Timers
3
Operating Supply Voltage
2.7 V to 5.5 V
Mounting Style
Through Hole
3rd Party Development Tools
PK51, CA51, A51, ULINK2
For Use With
AT89STK-11 - KIT STARTER FOR AT89C51RX2
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
58
AT89C51RB2/RC2
Table 45. IPL0 Register
IPL0 - Interrupt Priority Register (B8h)
Reset Value = X000 0000b
Bit addressable
Number
Bit
7
-
7
6
5
4
3
2
1
0
Mnemonic Description
PPCL
PPCL
PX1L
PX0L
PT2L
PT1L
PT0L
PSL
Bit
6
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
PCA Interrupt Priority Bit
see PPCH for priority level.
Timer 2 Overflow Interrupt Priority Bit
see PT2H for priority level.
Serial Port Priority Bit
see PSH for priority level.
Timer 1 Overflow Interrupt Priority Bit
see PT1H for priority level.
External Interrupt 1 Priority Bit
see PX1H for priority level.
Timer 0 Overflow Interrupt Priority Bit
see PT0H for priority level.
External Interrupt 0 Priority Bit
see PX0H for priority level.
PT2L
5
PSL
4
PT1L
3
PX1L
2
PT0L
1
4180E–8051–10/06
PX0L
0