AT89C51RB2-RLTIL Atmel, AT89C51RB2-RLTIL Datasheet - Page 59
![IC 8051 MCU FLASH 16K 44VQFP](/photos/6/92/69202/313-44-vqfp_sml.jpg)
AT89C51RB2-RLTIL
Manufacturer Part Number
AT89C51RB2-RLTIL
Description
IC 8051 MCU FLASH 16K 44VQFP
Manufacturer
Atmel
Series
89Cr
Datasheet
1.AT89C51RB2-RLTIL.pdf
(127 pages)
Specifications of AT89C51RB2-RLTIL
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-TQFP, 44-VQFP
For Use With
AT89STK-11 - KIT STARTER FOR AT89C51RX2
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Data Converters
-
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4180E–8051–10/06
Table 46. IPH0 Register
IPH0 - Interrupt Priority High Register (B7h)
Reset Value = X000 0000b
Not bit addressable
Number
Bit
7
7
6
5
4
3
2
1
0
-
Mnemonic Description
PPCH
PPCH
PX1H
PX0H
PT2H
PT1H
PT0H
PSH
Bit
6
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
PCA Interrupt Priority High Bit
PPCHPPCL
0
0
1
1
Timer 2 Overflow Interrupt Priority High Bit
PT2HPT2L
0
0
1
1
Serial Port Priority High Bit
PSH PSL
0
0
1
1
Timer 1 Overflow Interrupt Priority High Bit
PT1HPT1L
0
0
1
1
External Interrupt 1 Priority High Bit
PX1HPX1L
0
0
1
1
Timer 0 Overflow Interrupt Priority High Bit
PT0HPT0L
0
0
1
1
External Interrupt 0 Priority High Bit
PX0H PX0L
0
0
1
1
PT2H
5
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Priority Level
Lowest
Highest
Priority Level
Lowest
Highest
Priority Level
Lowest
Highest
Priority Level
Lowest
Highest
Priority Level
Lowest
Highest
Priority Level
Lowest
Highest
Priority Level
Lowest
Highest
PSH
4
PT1H
3
AT89C51RB2/RC2
PX1H
2
PT0H
1
PX0H
0
59
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